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STATISTICAL ANALYSIS PPT - Research Methods PowerPoint Presentation, free download - SlideServe - STAT 13, UCLA, Ivo Dinov. Looks like youve clipped this slide to already. So, we need to divide the result by n1!n2! PPT - Introduction to Statistical Analysis PowerPoint Presentation )pn1qn2 ? Free access to premium services like Tuneln, Mubi and more. marcia a. testa, mph. Statistical research is the rigorous development of improved or new statistical methods grounded in probability and statistical theory. 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. PPT - Overview Biostatistics Applications of Statistics in Research CCPR offers "drop-in" statistical consulting services to meet short-term needs of CCPR affiliates. By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. B^uuhm?}{].~}v_J;xogJY]@.)oqC? We focus on methods in eight areas of statistical research and maintain expertise in each. PPTX REACH Resources | Informing more effective humanitarian action Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. Winner of the Standing Ovation Award for Best PowerPoint Templates from Presentations Magazine. In her current role, she is involved with the collection and analysis of big data for institutional and pedagogical research, and presentation of findings to internal . One-sided vs. Two-sided Most tests should be framed as a two-sided test. - Chapter 1: Introduction and Research Methods What is Psychology? Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. February 13, 2010. (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 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 . 3 !1AQa"q2B#$Rb34rC%Scs5&DTdEt6UeuF'Vfv7GWgw 5 !1AQaq"2B#R3$brCScs4%&5DTdEU6teuFVfv'7GWgw ? ! " - An Introduction to Statistical Problem Solving in Geography - 2nd Edition . Ist Yr MSc(N) Practical Statistics for Medical Research, Correlation Correlation Coefficient .7 Correlation Coefficient -.5 Source: Altman. 3. Statistical Issues Designing Clinical Research - . 1994. page 99 63 Tips 6 (b) P-value vs. 95CI (4) Adapted from Armitage, P. and Berry, G. Statistical methods in medical research. Sampling.ppt - Google Slides x d P xuKAs b*Q0*9" (#D4FhgcZ;bg*sF"q][m\D Dt+a]|a#lsn8,3_:?i5jrWydw #T iv^\s'fRf9/j&&vFs7nKS"_EGiIC-JK|T7{E?cxgM/(+Q1gKzehH}O'4iUA3Mc+2c~zK|{} Dvk9/ @ H | xcdd``> @c112BYL%bpu. The SlideShare family just got bigger. {k68vX o F?5z[gfA)aU[x[~z ^SK&Kamis~ [] 5okev{\-p5}a0Ly O/;]/nEQ)Rllp.k$n-w87[W n)f3}u=[`9cf UhsH-"A It appears that you have an ad-blocker running. Data presentation can also help you determine the best way to present the data based on its arrangement. Often presented graphically as a 2 X 2 Table, Chi-Squared (2) Test Chi-Squared (2) Formula Not applicable in small samples If fewer than 5 observations per cell, use Fishers exact test, Correlation Assesses the linear relationship between two variables Example: height and weight Strength of the association is described by a correlation coefficient- r r = 0 - .2 low, probably meaningless r = .2 - .4 low, possible importance r = .4 - .6moderate correlation r = .6 - .8 high correlation r = .8 - 1 very high correlation Can be positive or negative Pearsons, Spearman correlation coefficient Tells nothing about causation, Correlation Source: Harris and Taylor. Here, you can use descriptive statistics tools to summarize the data. We've encountered a problem, please try again. We've updated our privacy policy. PPT - Statistical Methods in Clinical Research PowerPoint Presentation BIOS:6610 STATISTICAL METHODS IN CLINICAL TRIALS - . Looks like youve clipped this slide to already. ? need to solve 1023, Quantum Schrdingers Equation ?? Test about a slope. # $ % & ' ( ) * By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. They, So, its very important to spend some time on. Statistical methods in medical research. 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. 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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. Much more useful than correlation Allows prediction of values of Y rather than just whether there is a relationship between two variable. RESEARCH (PART 1 1994. page 99 There were statistically significant different (3).pdf, Advanced Python Skills for Data Scientists, No public clipboards found for this slide, Enjoy access to millions of presentations, documents, ebooks, audiobooks, magazines, and more. ? Get powerful tools for managing your contents. 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Looks like youve clipped this slide to already. Statistical Methods - SlideShare Statistical Method - an overview | ScienceDirect Topics GEOG: 3000- Advanced Geographic Chapter I:Introduction MIS 542 2014/2015 Fall, - Chapter I:Introduction MIS 542 2014/2015 Fall, Statistics: A Gentle Introduction By Frederick L. Coolidge, Ph.D. Sage Publications, - Statistics: A Gentle Introduction By Frederick L. Coolidge, Ph.D. Sage Publications Chapter 1 A Gentle Introduction Chapter 1*, UCLA STAT 13 Introduction to Statistical Methods. Introduction to Statistical Computing in Clinical Research - . 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. Sometimes, u is called the 1st moment of P(u). Common Statistical Methods for Clinical Research with SAS Examples, Third Edition. You can unsubscribe at any time by clicking on the unsubscribe link in the newsletter. Sample size for proportions Stata input: Mean 1 = .2, mean 2 = .3, = .05, power (1-) =.8. 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 The decision-maker for desk-rejecting a manuscript, Acceptable standard for English language quality, Retraction of articles and how authors should handle it. And theyre ready for you to use in your PowerPoint presentations the moment you need them. More than one method is . Now customize the name of a clipboard to store your clips. This may lead to a negative study outcome in error. biostatistics 212 lecture 1. today. dev. 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Confidence Intervals Commonly reported in studies to provide an estimate of the precision of the mean. (n1 0?N) N!/(n1! Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Statistical methods - Latest research and news | Nature 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. collecting and describing data. 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? With respect to use of research methodology, quantitative approach (78%) is popular in user studies followed by mixed methods (10%), qualitative (8%), and multimethod (4%). 2022 in a Nutshell Reminiscing the year when opportunities were seized and feats were achieved! The mean value of the deviation from the mean, Now, lets look at (?u)2 (u - ltugt)2 (square of, Its mean value is lt(?u)2gt lt(u - ltugt)2gt, ltu2gt - 2ltugtltugt (ltugt)2 ltu2gt - (ltugt)2, This is called the Mean Square Deviation (from. By accepting, you agree to the updated privacy policy. Overview. data sharing / standardization. 8p" O . R $ i4N5y } R $ `N%L B RX R $ M>3O'2 X R $ They are all artistically enhanced with visually stunning color, shadow and lighting effects. PPT - Chapter 1: Introduction to Statistical Methods PowerPoint The probability of not making a Type II error is 1 - , which is called the power of the test. A very large study might find that a difference of .1 on a VAS Scale of 0 to 10 is statistically significant but it may be of no clinical significance A large study might find many significant findings during multivariable analyses. 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. Statistical Methods. STATISTICS IN For quantitative data, you can use statistical analysis methods to test relationships between variables. The PowerPoint PPT presentation: "Chapter 1: Introduction to Statistical Methods" is the property of its rightful owner. What is the mean displacement, ltxgt ltmgtl? 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, ? By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. Sz_]WMi4}S:4c_KC%. You can read the details below. Tap here to review the details. Applications of Statistics in Research Bandit Thinkhamrop, Ph.D. (Statistics) Department of Biostatistics and Demography Faculty of Public Health Khon Kaen University. ADVANCED STATISTICAL METHODS IN AGRICULTURAL RESEARCH - . Slide 1. Many of them are also animated. 2. roger l. bertholf, ph.d., dabcc associate, Statistical Methods - . Clipping is a handy way to collect important slides you want to go back to later. It appears that you have an ad-blocker running. For routine medical research, use only two-sided tests. Table of contents Methods for collecting data Examples of data collection methods Methods for analyzing data Standard error measures the precision of the estimate of a population parameter provided by the sample mean or proportion. 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 ? 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. 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. P Values The probability that any observation is due to chance alone assuming that the null hypothesis is true Typically, an estimate that has a p value of 0.05 or less is considered to be statistically significant or unlikely to occur due to chance alone. biostatistics 212. today. It's FREE! Presentation Transcript. 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. ? sumber: Statistical Methods in Clinical Trials II Categorical Data - . 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. 3rd edition. lt(?n1)2gt (in general). Whatever your area of interest, here youll be able to find and view presentations youll love and possibly download. 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. For example, tables or graphs are used to organize data, and descriptive values such as the average score are used to summarize data. ziad taib biostatistics astrazeneca february 22, 2012. types of data. 12.1 - Summary of Statistical Techniques | STAT 500 Overview. If so, share your PPT presentation slides online with PowerShow.com. When designing a study, one needs to determine how large a study is needed. Statistical Methods in Clinical Trials - . ziad taib biostatistics astrazeneca march 7, 2012. types. - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. PPT Introduction to Statistical Analysis - UC Berkeley School of Information Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. descriptive statistics inferential statistics. Do you have PowerPoint slides to share? The probability of stepping to, to the left is q 1 p. In general, q ? Hidden error because cant be detected without a proper power analysis. The sample is chosen by selecting a random starting point and then picking every i th element in succession from the sampling frame. cocke-kasami-younger parsing algorithm: Statistical methods in NLP - . We've updated our privacy policy. PowerShow.com is a leading presentation sharing website. Now customize the name of a clipboard to store your clips. It appears that you have an ad-blocker running. Interquartile range Is the range of data from the 25th percentile to the 75th percentile Common component of a box and whiskers plot It is the box, and the line across the box is the median or middle value Rarely, mean will also be displayed. 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. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. Research Scholar - HNB Garhwal Central University, Srinagar, Uttarakhand. Statistical methods are essential for scientific research. Schedule Introduction Data Analysis--Introduction Data Collection Instruments Issues in Research Design Sample Size Sources of Error