Effect Size: Expected difference (d): Digits:12345678910 Step by step The paired t-test calculator calculates the paired t-test p-value. When you enter raw data, the paired t-test calculator also calculates the Shapiro-Wilk normality test and calculates the outliers. ...
Preleminary test to check paired t-test assumptions Assumption 1: Are the two samples paired? Yes, since the data have been collected from measuring twice the weight of the same mice. Assumption 2: Is this a large sample? No, because n < 30. Since the sample size is not large enough ...
2.8. Sample size The sample size required to detect a comparable improvement was calculated using an online calculator from (http://hedwig.mgh.harvard.edu/sample_size/js/js_crossover_quant.html). Based on previous studies of paired neurostimulation for chronic pain [45], which reported a mean...
A single-factor analysis of variance (ANOVA) with two-sample t-tests was conducted (Treated, n = 143; Untreated, n = 146) to evaluate the differences in percent foliar cover, litter cover, bare ground and the relative cover of each functional group throughout the watersheds. The difference...