Calculate the standard error for a proportion of a group and a sub-group
118871
Testing whether the mean of a group is different from the mean of the entire sample
102653
percentage count by group using dplyr
135276
T-test equal variances, unequal sample sizes
117343
Average of multiple columns
81027
Standard errors for multiple regression coefficients?
59827
Automatic calculation of error in pgfplots
34133
Mann-Whitney-Wilcoxon Test on highly unbalanced groups.
12545
Calculate first difference by group in R
125656
Assessing group differences on multiple outcomes
32647
How to calculate the variance of a partition of variables
94712
Estimator of Variance of Error
106473
Confidence intervals for median
139710
How do I combine standard deviations of two groups?
2060
How do I create group data in a category with more than and less than in R?
11150
Standard error of a ratio
143298
How to test hypothesis of no group differences?
54734
Standard error of the estimate in logistic regression