What is NOT true about standard deviations?

What is the main advantage of repeated measures ANOVA?

A Factorial ANOVA has 9 levels for factor A and 6 levels for factor B and uses 9 participants in each treatment condition. What is the total number of participants needed for the study?

The sample consists of n = 6 scores. The mean of the scores is M = 20. When a new score is added to the sample, the new mean is M = 21.  What was the new score that was added?

Calculate standard deviation for the following sample of exam scores: 6, 7, 4, 5, 8, 9.

What is the difference between a positively and negatively skewed graph?

The values in the following matrix are treatment means from a two-factor study. One of the means is missing. What value for the missing mean would most likely result in no interaction?     B1 B2 A1 2 12 A2 16 ?

An 80% confidence interval for the population mean ranges from 14 to 22. Based on this information:

A Factorial ANOVA has 9 levels for factor A and 6 levels for factor B and uses 9 participants in each treatment condition. What is the total number of participants needed for the study?

The sample consists of n = 6 scores. The mean of the scores is M = 20. When a new score is added to the sample, the new mean is M = 21.  What was the new score that was added?