If a set of exam scores forms a normal, symmetrical distribution with all measures of central tendency in the center of the distribution, what can you conclude about the students’ scores?

The following data represent the means for each treatment condition in a two factor experiment.  Note that one mean is not given. What value for the missing mean would result in no AxB interaction?                 B1         B2       A1    20    30     A2    10     ?

A set of n = 75 pairs of scores (X and Yvalues) produces a regression equation of Ŷ = 10X + 19. Find the predicted Y value for an X score of -6.

If an analysis of variance is used for the following data, what would be the effect of changing the value of M1 to 20?Sample DataM1 = 15    M2 = 25 SS1 = 90    SS2 = 70

A distribution of scores has a mean of µ = 50.  One new score is added to the distribution and the new mean is found to be µ = 48.  From this result, you can conclude that the new score was ____.

For a negatively skewed distribution with a mean of M = 20, what is the most probable value for the median?

In a correlational study:

One sample has n = 4 scores and M = 10.  A second sample has n = 6 scores and M = 5.  If the two samples are combined, then what is the mean for the combined sample?

What is the value of ΣX2 for the following scores?  Scores: 1, 0, 2, 4

For an experiment comparing two methods for teaching social skill training to children with autism, the independent variable is ____ and the dependent variable is ____.