Presentation Summary : Sample size and study design Brian Healy, PhD Comments from last time We did not cover confounding Too much in one class/Not enough examples/Superficial level I ...
Source : http://hedwig.mgh.harvard.edu/biostatistics/sites/default/files/public/bhealy_tutorials/Session4b.ppt
Presentation Summary : ... smallest unit from which sample can be selected Sampling frame List of all the sampling units from which sample is drawn Sampling scheme ... sample size required ...
Source : http://www.pitt.edu/~super4/33011-34001/33841.ppt
Presentation Summary : Sample Size How many replications, n, do I need? What size effects do you want to detect? We will focus on detecting effects of a pre-specified magnitude
Source : http://www.stat.sc.edu/~grego/courses/stat506/Lecture.notes/SampleSize.ppt
Presentation Summary : Chapter 13 Determining the Size of a Sample Sample Size AXIOMS There is only one method of determining sample size that allows the researcher to PREDETERMINE the ...
Source : http://homepages.wmich.edu/~lindquis/marketing%20research%20ppt/bbch13.ppt.ppt
Presentation Summary : Chapter 10 Audit Sampling Introduction Sampling Risk: Substantive Testing Substantive Sampling Considerations Specify the Audit Objective Define Misstatements Define ...
Source : http://www.swlearning.com/accounting/rittenberg/fourth_edition/powerpoint/ch10.ppt
Presentation Summary : Determine what K is equal to by dividing the size of the population by the desired sample size. 1. Identify and define the population. 6.
Source : http://www83.homepage.villanova.edu/richard.jacobs/EDU%208603/lessons/sampling.ppt
Presentation Summary : Title: Hypothesis Testing and Sample Size Calculation Author: elliottj Last modified by: brickwek Created Date: 1/7/2002 3:33:32 PM Document presentation format
Source : http://www3.marshfieldclinic.org/proxy/MCRF-Admin-OSWP-RM-Biostat_Basics_Hyp_and_SS.1.ppt
Presentation Summary : Experimental design, basic statistics, and sample size determination Karl W Broman Department of Biostatistics Johns Hopkins Bloomberg School of Public Health
Source : http://www.pitt.edu/~super7/32011-33001/32881-32901.ppt
Presentation Summary : PPS focuses on overstatements. PPS Sampling Determination of Sample Size PBV = population book value RF = reliability factor (Table 9-14) ...
Source : http://www.buec.udel.edu/jenkinsd/Powerpoint/Chp09.ppt
Presentation Summary : Experimental design and sample size determination Karl W Broman Department of Biostatistics Johns Hopkins University http://www.biostat.jhsph.edu/~kbroman
Source : http://www.biostat.wisc.edu/%7Ekbroman/presentations/acuc.ppt
Presentation Summary : Introduction to sample size and power calculations How much chance do we have to reject the null hypothesis when the alternative is in fact true?
Source : http://web.stanford.edu/~kcobb/hrp259/lecture11.ppt
Presentation Summary : Title: Sample Size Determination Author: Tom Reiland Last modified by: reiland Created Date: 12/2/1996 11:58:40 AM Document presentation format: On-screen Show (4:3)
Source : http://www.stat.ncsu.edu/people/reiland/courses/st350/SAMPSIZE_p_sp08.ppt
Presentation Summary : Full population. Samplepopulation = The sample population . IS. the full population; this is . ideal. Full population. Sample population. The sample population is
Source : http://www.colby-sawyer.edu/assets/ppt/samplesize_Ql_1.ppt
Presentation Summary : Sample Size to Compare Percentages A study to compare percentages of outcomes from different groups (incidence, conversion rate, cure rate, mortality rate, ...
Source : http://web.kku.ac.th/animal/files/Sample_Size_Calculation.ppt
Presentation Summary : Bias in Survey Sampling Bias Due to Unrepresentative Samples A good sample is representative. This means that each sample point represents the attributes of a known ...
Source : http://www.personal.psu.edu/mcr223/oldstuff/Bias.ppt
Presentation Summary : How Big a SampleDo You Need? Small sample size (less than the optimum sample size) – May fail to detect a clinically important difference, – or
Source : http://pglibrary-publichealth.wikispaces.com/file/view/sample+size+estimation.pptx
Presentation Summary : Title: Sample Size and Power Calculations Author: Sergio Bautista Last modified by: Mead Created Date: 1/19/2010 12:30:56 PM Document presentation format
Source : http://cega.berkeley.edu/assets/cega_events/34/Sample_Size_Power.ppt
Presentation Summary : Title: Sample Size Determination Author: Tom Reiland Last modified by: Tom Reiland Created Date: 12/2/1996 11:58:40 AM Document presentation format
Source : http://www.stat.ncsu.edu/people/reiland/courses/st350/SAMPSIZE_mu_f09.ppt
Presentation Summary : More General Comments. A well-written sample size estimation section in a grant can convince the reviewers that you know what you’re doing. A poorly-written sample ...
Source : http://people.musc.edu/~elg26/teaching/statcomputing.2013/Lectures/Lecture25.Samplesize/Sample%20Size%20&%20Power%20Estimation.pptx
Presentation Summary : Statistical planning and Sample size determination Planning Which variables will I collect and how will they be measured? What types of data do they represent?
Source : http://web.up.ac.za/sitefiles/15_samplesize.ppt
Presentation Summary : Sample Size Determination ... Investigator wants to compare total cholesterol at the end of the six week study Planned statistical analysis: two sample t-test ...
Source : http://www.bumc.bu.edu/facdev-medicine/files/2012/03/Sample-Size-Determination-03202012.ppt
Presentation Summary : Title: Audit Sampling: Concepts and Techniques Author: Ray Whittington Last modified by: crowej Created Date: 6/17/1995 11:31:02 PM Document presentation format
Source : http://www.wou.edu/~beebej/BA%20451/Chap009.ppt
Presentation Summary : Is Your Study Statistically Sound? Michelle Secic, M.S. President Secic Statistical Consulting, Inc. www.secicstats.com Is Your Study Statistically Sound?
Source : http://www.secicstats.com/Secic%20-%20Is%20your%20study%20statistically%20sound.ppt
Presentation Summary : Sample Size –sigma known Note: We can use the following formula to determine the sample size necessary to discover the “true” mean value from a population.
Source : http://myweb.cebridge.net/kimblum/sample%20size.ppt