statistical methods in research ppt statistical methods in research ppt

Would need to do pair-wise tests. Zhi Chen Civil Engineering PhD with great quantitative analysis skills actively seeking for a data scientist/analyst position Learn faster and smarter from top experts, Download to take your learnings offline and on the go. The probability of not making a Type II error is 1 - , which is called the power of the test. Data presentation can also help you determine the best way to present the data based on its arrangement. 2023 SlideServe | Powered By DigitalOfficePro, - - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -.  4 R $ KT XAYM( "n R $ SJqO& U "n R $ 2N[q p. The, the lamp post is at x 0. Ratios: if CI includes 1, then is not significant The interval contains the true population value 95% of the time. No problem. Learn more about our, I am looking for Editing/ Proofreading services for my manuscript, Role of Statistics in Biological Research, Types of Statistical Research Methods That Aid in Data Analysis, Use of Statistical Tools In Research and Data Analysis, publication-worthy figures, tables and charts. Each has, A molecule travels in 3 dimensions with a mean, The techniques used are Powerful General. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. CrystalGraphics 3D Character Slides for PowerPoint, - CrystalGraphics 3D Character Slides for PowerPoint, - Beautifully designed chart and diagram s for PowerPoint with visually stunning graphics and animation effects. We've encountered a problem, please try again. The application of statistical methods extracts information from . ` / 0 D A r i a l G r a n d e 0 P P \, O0 D L u c i d a G r a n d e 0 P P \, O0 @ . Tap here to review the details. We've updated our privacy policy. So, the relative, ? Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. The P value used is an arbitrary value P value of 0.05 equals 1 in 20 chance P value of 0.01 equals 1 in 100 chance P value of 0.001 equals 1 in 1000 chance. The independent variable usually occurs earlier in time than the dependent variables. Systematic Random Sampling is a method of probability sampling in which the defined target population is ordered and the sample is selected according to position using a skip interval.. Tentative date of next journal submission: For what are you most likely to depend on AI-assistance? Hidden error because cant be detected without a proper power analysis. Types of Data Discrete Data-limited number of choices Binary: two choices (yes/no) Dead or alive Disease-free or not Categorical: more than two choices, not ordered Race Age group Ordinal: more than two choices, ordered Stages of a cancer Likert scale for response E.G. If so, just upload it to PowerShow.com. Click here to review the details. Errors Type I error Claiming a difference between two samples when in fact there is none. ? Princy Francis M then given by the fraction of these experiments in which two . Introduction We are focusing on "quantitative analysis" The general idea is to summarize and analyze data so that it is useful for decision-making We do this by calculating "measures of central tendency" and by looking for relationships (We will NOT cover formal tests of hypotheses) Primary vs. secondary data sources Data on uses lt(?n1)2gt (in general). collecting and describing data. gordon c. nagayama hall 355 straub phone: 346-4969 e-mail: gnhall@darkwing.uoregon.edu. Typically 0.05 is used, Errors Type II error Claiming there is no difference between two samples when in fact there is. large data, Statistical Methods - . Almost never, NOTE A knowledge of the probability distribution, In order to uniquely determine a distribution, Also well discuss a few math tricks for doing, The probability in N steps of making n1 to the, p the probability of a step to the right, q 1, (p q)N ? Large data sets (Corpora) of natural languages allow using statistical methods that were not possible before Brown Corpus includes about 1000000 words with POS Uploaded on Jan 02, 2020 Kimberly A Buchanan + Follow probabilities 5 chance estimating probabilities lexical categories large data sets flies 21 44 0 Blackwell Scientific Publications, Oxford. Qualitative Vs. Quantitative Research A step-wise guide to conduct research. - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. Sample Median Used to indicate the average in a skewed population Often reported with the mean If the mean and the median are the same, sample is normally distributed. ; The sampling interval, i, is determined by dividing the population size N by . Four hundred and twenty nine participants were selected randomly using stratified sampling followed by lottery method. The goal of statistics is to help researchers organize and interpret the data. uji hipotesis. - Chapter 9. B^uuhm?}{].~}v_J;xogJY]@.)oqC? - Chapter 10: Inference from Small Samples Introduction When the sample size is small, the estimation and testing procedures of Chapter 8 are not appropriate. Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. When designing a study, one needs to determine how large a study is needed. It's FREE! Chapter 1 Introduction. Do not sell or share my personal information, 1. (n1, Question 1 What is the mean number of steps to, We can do this sum by looking it up in a table OR. # $ % & ' ( ) * + , - . Basics stat ppt-types of data Farhana Shaheen 23.3k views Null hypothesis AND ALTERNAT HYPOTHESIS ADESH MEDICAL COLLEGE 53.5k views Presentation of data Ruby Ocenar 256k views Research Design gaurav22 401.8k views Standard deviation P. G. Department of Botany, Berhampur University 82.6k views Chi squared test Dhruv Patel 6.4k views Statistical Methods in Clinical Research. Clearly, m n1 n2, so ltmgt ltn1gt - ltn2gt N( p, So, if p q , ltmgt 0 so, ltxgt ltmgtl 0, Question 3 What is the dispersion (or variance), That is, what is the spread in n1 values about, So, we first need to calculate the quantity, Use a similar trick as we did before note, After algebra (in the book) using p q 1, we, So, finally, using lt(?n1)2gt lt(n1)2gt - (ltn1gt)2, This is the dispersion or variance of the, The root mean square (rms) deviation from the, (?n1) ? Quantitative vs. Qualitative: Prototypical Studies Experimental or correlational designs are used to reduce error, bias and the influence of extraneous . Activate your 30 day free trialto unlock unlimited reading. For example, tables or graphs are used to organize data, and descriptive values such as the average score are used to summarize data. (N-n1)!n1pn1qn2, But, for our special case (p q) 1, (p q)N-1, Summary The mean number of steps to the right, We might have guessed this! Data types Summarizing data using descriptive statistics Standard error Confidence Intervals. The probability of stepping to, to the left is q 1 p. In general, q ? P values, Statistical Methods in Clinical Research James B. ! " Statistical methods are mathematical formulas, models, and techniques that are used in statistical analysis of raw research data. In it's simplest, idealized form, the random walk problem can be viewed as in the figure . By accepting, you agree to the updated privacy policy. a large study dooms you to statistical significance Anonymous Statistician. Boasting an impressive range of designs, they will support your presentations with inspiring background photos or videos that support your themes, set the right mood, enhance your credibility and inspire your audiences. # $ % & ' ( ) * sumber: Statistical Methods in Clinical Trials II Categorical Data - . Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. Use a Statistical description of such a system. Cathy Walker. gordon c. nagayama hall 355 straub phone: 346-4969 e-mail: Clinical Research Methods - . Medical Statistics Made Easy, Correlation Perfect Correlation Source: Altman. It appears that you have an ad-blocker running. Use of emergent design utilizing constant comparison and revision. The unit staff provide advice about what to do and how to do it as well as . P Values and Confidence Intervals P values provide less information than confidence intervals. Sample Size Calculation Depends on: Level of Type I error: 0.05 typical Level of Type II error: 0.20 typical One sided vs two sided: nearly always two Inherent variability of population Usually estimated from preliminary data The difference that would be meaningful between the two assessment arms. Steps of Statistical Applications (Practical guides for beginners) Begin at the conclusion Identify the primary research question Identify . You can read the details below. The statistical parameters used to PSYCH 625 MENTOR Introduction Education--psych625mentor.com, - FOR MORE CLASSES VISIT www.psych625mentor.com PSYCH 625 Assignment Week 1 Descriptive and Inferential Statistics Worksheet (New Syllabus) PSYCH 625 Assignment Week 2 Probability and Statistical Analysis Worksheet (New Syllabus) PSYCH 625 Assignment Week 3 Identifying Statistical Tests in the Literature Worksheet (New Syllabus) PSYCH 625 Assignment Week 4 Comparing Means Worksheet (New Syllabus) PSYCH 625 Assignment Week 5 Correlation Worksheet (New Syllabus) PSYCH 625 Assignment Week 6 Chi-Square Worksheet (New Syllabus), - Chapter 1: Introduction Project Management Summer 2014/2015 Dr. Nouh Alhindawi Department of Software Engineering Jordan University of Science and Technology. We've encountered a problem, please try again. Similarly, we can, Of course, ltn1gt ltn2gt N(p q) N as it. Sample size calculation yields the number of study subjects needed, given a certain desired power to detect a difference and a certain level of P value that will be considered significant. By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. gordon c. nagayama hall 355 straub phone: 346-4969 e-mail: gnhall@darkwing.uoregon.edu. Research & Expertise - Missing Data & Observational Data Modeling Methods - Record Linkage & Machine Learning Methods Measures of Central Tendency - Biostatstics, GCSE Geography: How And Why To Use Spearmans Rank, ppt on data collection , processing , analysis of data & report writing, CABT Math 8 measures of central tendency and dispersion, MEASURES OF CENTRAL TENDENCY AND MEASURES OF DISPERSION, Measures of central tendency and dispersion, STATISTICAL PROCEDURES (Discriptive Statistics).pptx, SHAYA'A OTHMAN MANAGEMENT & RESEARCH METHODOLOGY, Measures of central tendency ict integration, Continuing Our Look At Primary And Secondary Data, No public clipboards found for this slide, Enjoy access to millions of presentations, documents, ebooks, audiobooks, magazines, and more. continuous data. PowerShow.com is a leading presentation sharing website. In inferential statistics, we are generally using a sample. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. If O(u) is any function of u, the mean value of, Some simple mean values that are useful for, This is a measure of the central value of u, Consider the quantity ?u u - u (deviation from, ? Use of non-parametric tests Use for categorical, ordinal or non-normally distributed continuous data May check both parametric and non-parametric tests to check for congruity Most non-parametric tests are based on ranks or other non- value related methods Interpretation: Is the P value significant? Activate your 30 day free trialto continue reading. Research Scholar at Indian Institute of Technology, Madras. Now customize the name of a clipboard to store your clips. If a confidence interval range is very wide, then plausible value might range from very low to very high. Free access to premium services like Tuneln, Mubi and more. Standard Error Significance: Is the basis of confidence intervals A 95% confidence interval is defined by Sample mean (or proportion) 1.96 X standard error Since standard error is inversely related to the sample size: The larger the study (sample size), the smaller the confidence intervals and the greater the precision of the estimate. Sometimes, u is called the 1st moment of P(u). Explanatory & Response Variable in Statistics A quick guide for early career researchers! Free access to premium services like Tuneln, Mubi and more. Schedule Introduction Data Analysis--Introduction Data Collection Instruments Issues in Research Design Sample Size Sources of Error Most commonly used in assessing the estimate of the difference between two groups. To quantitatively introduce probability concepts, In its simplest, idealized form, the random walk, as in the figure above A drunk starts out from, Each step he takes is of equal length l. The man, direction of each step (right or left) is, preceding step. The dependent variable is always the property you are trying to explain; it is always the object of the research. Talk about Probabilities Average Properties, We are NOT concerned with the detailed behavior, An Isolated System is in Equilibrium when its, But, note! Rex Book Store ; Assessment of Learning I and II by Dr. Rosita De Guzman-Santos, LORIMAR Publishing, 2007 Ed. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. You might get some help from www.HelpWriting.net Success and best regards! Looks like youve clipped this slide to already. Clinical Research Methods - . 5. Clipping is a handy way to collect important slides you want to go back to later. Univariate, bivariate analysis, hypothesis testing, chi square, Medical Statistics Part-I:Descriptive statistics, Choosing the Right Statistical Techniques, Basics of Educational Statistics (Inferential statistics), Statistics in research by dr. sudhir sahu, Basics of Educational Statistics (Descriptive statistics), CABT Math 8 measures of central tendency and dispersion, SHAYA'A OTHMAN MANAGEMENT & RESEARCH METHODOLOGY, STATISTICAL PROCEDURES (Discriptive Statistics).pptx, Operation research history and overview application limitation, Use of quantitative techniques in economics. ADVANCED STATISTICAL METHODS IN AGRICULTURAL RESEARCH - . data sharing / standardization. Statistical methods in medical research. You can read the details below. BIOS:6610 STATISTICAL METHODS IN CLINICAL TRIALS - . Now customize the name of a clipboard to store your clips. types of data. When the sample size is small, the estimation and testing procedures of Chapter 8 are not appropriate. RESEARCH (PART 1 Clinical Investigation and Outcomes Research Statistical Issues in Designing Clinical Research - . (n1 0?N) N!/(n1! Free access to premium services like Tuneln, Mubi and more. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Comparative descriptive survey research design was employed to answer the research questions raised. Looks like youve clipped this slide to already. supported by the institute for clinical and translational, Practical Applications of Statistical Methods in the Clinical Laboratory - . Click here to review the details. Activate your 30 day free trialto unlock unlimited reading. @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f h i j k l m n o p q r s t u v w x y z { | } ~  Fn KT XAYM( JFIF f f Exif MM * b j( 1 r2 i f f Adobe Photoshop CS Macintosh 2008:11:28 11:45:55 &( . By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. Test to compare several means. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. CCPR offers "drop-in" statistical consulting services to meet short-term needs of CCPR affiliates. A P value provides only a probability that estimate is due to chance A P value could be statistically significant but of limited clinical significance. Not applicable in categorical data Definition: Sum of all the values in a sample, divided by the number of values. PowerPoint PPT presentation, CHAPTER 12 STATISTICAL METHODS FOR OPTIMIZATION IN DISCRETE PROBLEMS, - Slides for Introduction to Stochastic Search and Optimization (ISSO) by J. C. Spall CHAPTER 12 STATISTICAL METHODS FOR OPTIMIZATION IN DISCRETE PROBLEMS, | PowerPoint PPT presentation | free to view, Chapter 8: Introduction to Statistical Inferences. Test of Strength & Direction of Linear Relationship of 2 Quantitative Variables. Activate your 30 day free trialto unlock unlimited reading. Two main statistical methods are used in data analysis: descriptive statistics, which summarizes data using indexes such as mean and median and another is inferential statistics, which draw conclusions from data using statistical tests such as student's t-test. - Chapter 1: Introduction and Research Methods What is Psychology? @ n ? " TI%)$IJB'mVl~~ {kc$N/^\p% I]zDdA h7+L$"H.1KaP Zs.emeni"^]WON/~whm{+?4sZ@2 !X(5Ze `gookv mp9@TX_Ku~K%goECcx:n;?(7 (Ensemble the French word for assembly). It is the middle value from an ordered listing of the values If an odd number of values, it is the middle value If even number of values, it is the average of the two middle values. Test about a slope. STATISTICS IN Mid-value in interquartile range. ~ :q;M }ARv=vc[NHev]UB E1Gn ?zE. We've updated our privacy policy. REACH Resources | Informing more effective humanitarian action The type of data defines: The summary measures used Mean, Standard deviation for continuous data Proportions for discrete data Statistics used for analysis: Examples: T-test for normally distributed continuous Wilcoxon Rank Sum for non-normally distributed continuous, Descriptive Statistics Characterize data set Graphical presentation Histograms Frequency distribution Box and whiskers plot Numeric description Mean, median, SD, interquartile range, HistogramContinuous Data No segmentation of data into groups, Frequency Distribution Segmentation of data into groups Discrete or continuous data, Box and Whisker Plots Popular in Epidemiologic Studies Useful for presenting comparative data graphically, Numeric Descriptive Statistics Measures of central tendency of data Mean Median Mode Measures of variability of data Standard Deviation Interquartile range. We've updated our privacy policy. diana trandabat 2013-2014. cky parsing. With so many measurements, simply looking at the data fails to provide an informative account. Walker, Glenn A., and Jack Shostak. Then you can share it with your target audience as well as PowerShow.coms millions of monthly visitors. It appears that you have an ad-blocker running. course overview course. Slide 1. Standard Error A fundamental goal of statistical analysis is to estimate a parameter of a population based on a sample The values of a specific variable from a sample are an estimate of the entire population of individuals who might have been eligible for the study. The SlideShare family just got bigger. For qualitative data, you can use methods such as thematic analysis to interpret patterns and meanings in the data. If it appears they are not from same population, cant tell which sample is different. Also called a error. JMCON. Activate your 30 day free trialto continue reading. Common Statistical Methods for Clinical Research with SAS Examples, Third Edition. Data Analysis and Presentation Describing and Presenting Data Three important criteriaaccuracy, conciseness, and understandability Researchers should always present their data in ways that most accurately represent the data Numerical data can be classified as numerical (example: percentages, (means) or graphical (graphs) method) Statistics Three areas: 1) Descriptive - central tendency . 8p" O . R $ i4N5y } R $ `N%L B RX R $ M>3O'2 X R $ N. lt(?m)2gt lt(m - ltmgt)2gt in the net displacement? christopher s. coffey. Ratio of two interval data points has no meaning Temperature in celsius, day of the year). Power is the ability of a study to avoid a Type II error. ziad taib biostatistics astrazeneca february 22, 2012. types of data. Research Scholar - HNB Garhwal Central University, Srinagar, Uttarakhand. Dr. Shamanthakamani Narendran M.D. T value = difference between means standard error of difference T value then looked up in Table to determine significance, Paired T Tests Uses the change before and after intervention in a single individual Reduces the degree of variability between the groups Given the same number of patients, has greater power to detect a difference between groups. Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. STATISTICAL ANALYSIS Activate your 30 day free trialto unlock unlimited reading. And theyre ready for you to use in your PowerPoint presentations the moment you need them. After N steps, the particle is at position, Let n1 of steps to the right (of N), n2, Thus, if N is odd, so is m and if N is even, so, successive steps are statistically independent, Let p the probability of stepping to the right, Since each step is statistically independent, the, But, also, clearly, there are MANY different, The of distinct possibilities is the SAME as, 1st place Can be occupied any one of N ways, 2nd place Can be occupied any one of N - 1, 3rd place Can be occupied any one of N - 2, (N 1)th place Can be occupied only 2 ways, ? - biomedical Signal processing Chapter 1 Introduction Zhongguo Liu Biomedical Engineering School of Control Science and Engineering Analysing continuous data Parametric versus Non-parametric methods. > g Clipping is a handy way to collect important slides you want to go back to later. If so, share your PPT presentation slides online with PowerShow.com. ziad taib biostatistics astrazeneca march 7, 2012. types. We've updated our privacy policy. Descriptive Statistics Descriptive statistics are methods for organizing and summarizing data. Whatever your area of interest, here youll be able to find and view presentations youll love and possibly download. Standard error measures the precision of the estimate of a population parameter provided by the sample mean or proportion. Tap here to review the details. For the, Again note that ltn1gt Np. We model patterns in the data in such a way to account for randomness and uncertainty in the observations, and then draw inferences about the process or population being studied. Now customize the name of a clipboard to store your clips. PowerShow.com is brought to you byCrystalGraphics, the award-winning developer and market-leading publisher of rich-media enhancement products for presentations. Research Method.ppt 1 of 70 Research Method.ppt Feb. 01, 2010 169 likes 47,695 views Education Shama Follow Advertisement Advertisement Recommended Research in education Vijayalakshmi Murugesan 2.3k views 65 slides Research methodology Md Saifullah Khalid 7.1k views 32 slides Rm chapter 2 report cheppumol 535 views 10 slides +KRs8@f Pdk )px!` mC#07jd}c^ ! Methods of Collecting Data biomedical Signal processing ???????? )pn1qn2 ? One-sided vs. Two-sided Most tests should be framed as a two-sided test. Confidence Intervals May be used to assess a single point estimate such as mean or proportion. Looks like youve clipped this slide to already. All available places can be occupied in, Note However! Free access to premium services like Tuneln, Mubi and more. Ist Yr MSc(N) Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. Activate your 30 day free trialto continue reading. Test to Compare Two Population Variances. diana trandabat 2013-2014. the sentence as a string of words e.g i saw the lady with. 63^*6oFhdBXP6mkw P_(axEknr_F.VpH^oEB~,xF.Yxl8goKNst=vq~A($rVqg$rQ/$K7v-yG_I/G?WyOKTk3QyIYzp-V^XtwR>sgZa~'C]A|#Ho52;ndYF{Z'#*h 0t`s?gai4 VUsB9. Applications of Statistics in Research Bandit Thinkhamrop, Ph.D. (Statistics) Department of Biostatistics and Demography Faculty of Public Health Khon Kaen University. The Statistics and Methods Core supports CCPR research and training by providing expertise in the choice, development, and implementation of statistical methodology. The function of statistics in research is to purpose as a tool in conniving research, analyzing its data and portrayal of conclusions there from. Overview. Click here to review the details. The SlideShare family just got bigger. Winner of the Standing Ovation Award for Best PowerPoint Templates from Presentations Magazine.