OBGYN MSc Stat Module (2016-2018) :
Exercises 3 : Statistics for Two Groups Page
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 Please note : the data presented in all course material for the statistical module are generated by computers to demonstrate the methodologies, and should not be confused with actual clinical information Introduction Exercises Exercise 3 contains exercises for statistics for comparing two groups, most commonly used in epidemiological studies, experiments, and clinical trials. The theoretical basis for normal distribution, 95% confidence interval, and sample size are discussed in Contents_1. Probability. Discussions on comparing two groups can be found in Contents_3. Comparing Two Groups The programs for calculating probabilities can be found in StatPgm 1. Probability of z and t, The programs for calculating sample size and comparing two groups can be found in StatPgm 3a. Compare Two Measurementsfor parametric and nonparametric measurements, StatPgm 3b. Compare Two Proportions for proportions, and StatPgm 3c. Compare Two Regressions for comparing two regressions. The program StatPgm 7. Supportive Utilities is also available for assistance to convert raw data to means and Standard Deviation, or to percentages The Microsft Office package of Word, Excel, and Powerpoint, or similar software, should be activated during the exercise. Excel is a useful tool to manipulate data, Powerpoint is useful to edit graphics, and the results should be copied to and edited in a Word file.