Standard Error Calculators
for confidence intervals and hypothesis tests       
                                                                                      

Direct URLs:

  See calculators for theoretical sampling distributions

ANOVA for Difference of Means when given summarized data. http://www.tlok.org/visualize/elem-stat/anova_difference_of_means.php

With example http://www.tlok.org/visualize/elem-stat/anova_difference_of_means.php?file=anova_example.txt