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StatsToDo : Sample Size for Paired Differences
Explanation Javascript Program R Codes Sample Size Tables
 Data Input Sample Size Estimation is a table of 4 columns   - Each row contains data from a separate study   - Col 1 = probability of Type I error (α)   - Col 2 = power (1-β)   - Col 3 = mean of paired differences   - Col 4 = Standard Deviation of paired differences    Data Input for Power Estimation is a table of 4 columns   - Each row contains data from a separate study   - Col 1 = probability of Type I error (α)   - Col 2 = sample size (Pairs) used   - Col 3 = mean of Paired Differences observed   - Col 4 = Standard Deviation of paired differences    Data Input for Confidence Interval Estimation is a table of 3 columns   - Each row contains data from a separate study   - Col 1 = percent confidence (usually 95)   - Col 2 = sample size used (pairs)   - Col 3 = standard deviation of paired differences observed    Data Input for Pilot Study is for a single plan, a single column with 4 rows   - Row 1 : Percent Confidence required, usually 95 or 99   - Row 2 : Standard Deviation of Paired Mean   - Row 3 : Sample Size Interval   - Row 4 : Maximum sample size