The 10% myth study discussed in this chapter measured the beliefs of both psychology majors and non–psychology majors. The 39 non–psychology majors in this study provided the following values for the estimated brain power variable:

a. Calculate the number of scores (N) and the sum of scores (ΣX).

b. Calculate the mode, median, and the mean.

c. Looking at the mode, median, and mean, how would you summarize the beliefs of the non–psychology majors? How would you compare their beliefs to those of the psychology majors discussed earlier in this chapter?

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Non-Psychology Major Estimated Brain Non-Psychology Power Major Estimated Brain Power Non-Psychology Major Estimated Brain Power 1 15 14 10 27 15 2 45 15 20 3 10 16 50 22 25 10 40 17 25 30 20 5 5 18 45 31 10 60 10 19 40 32 5 7 50 20 25 33 15 8 45 21 10 34 10 9 10 22 5 35 5 10 10 23 23 15 36 60 11 35 24 5 37 10 12 5 25 40 38 15 13 15 26 30 39 15