7. Below are data showing the results of six subjects on a memory test. The thre

Question

7. Below are data showing the results of six subjects on a memory test. The three scores per subject are their scores on three trials (a, b, and c) of a memory task. Are the subjects get-ting better each trial? Test the linear effect of trial for the data. a. Compute L for each subject using the contrast weights -1, 0, and 1. That is, compute (-1)(a) + (0)(b) + (1)(c) for each subject. b. Compute a one-sample t-test on this column (with the L values for each subject) you created. (a) L1 = 3, L2 = 5, L3 = 3, L4 = 6, L5 = 5, L6 = 0 (b) t = 11/3-0/1.284/root 6= 6.995

Explanation / Answer

thus answer is 22.

t value = 6.995 given

df = 6-1 =5

Hence p value = The P-Value is 0.00092. The result is significant at p < 0.05.

Hence L values can be taken as given i.e. L1 = 3, ...L6 =0

as the difference is not statistically significant.

a a*L b L c L 4 -4 6 0 7 7 3 -3 7 0 8 8 2 -2 8 0 5 5 1 -1 4 0 7 7 4 -4 6 0 9 9 2 -2 4 0 2 2 -16 0 38 22

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