Reconsider the data collected in the memory experiment in Activity 5-5.

a. Calculate the mean and median of the scores for the JFK and JFKC treatment groups.

b. Are these parameters or statistics? Explain.

c. Comment on how these measures of center compare between the two groups. Does the difference in values appear to be substantial?

d. Comment on what your analysis reveals about the question of whether or not the grouping of letters affects memory performance.