Q1(i) Slide 14 in Module 1 Section 1 lecture slides contains 5 lots of "???". Some suitable choices for words to replace each "???" are (in order): (a) correlation, correlation, higher, are positive, mean difference. (b) slope, slope, lower, are negative, mean difference. (c) mean difference, mean, correlated, are correlated, correlation. (d) proportion, proportion, vary, varies, proportion. (e) Both A and B are appropriate. Q1(ii) Slide 29 in Module 1 Section 1 lecture slides asks to calculate values for P(R > 0, eps > 0), P(R > 0), P(eps > 0). (a) First, calculate P(R > 0, eps > 0) from the cross-tab table, giving your answer to 3 dec. places. (b) Calculate P(R > 0). (c) Calculate P(eps > 0). (d) Assuming R > 0 and eps > 0 are independent events, P(R > 0, eps > 0) = P(R > 0) x P(xeps > 0). Q1(iii) The expected value for the (R > 0, eps > 0) = (1, 1) slot is given by the calculation (where N = 66837): (a N x 7196+26347 66837 . X 13016+20278 66837 (b) N X : 13016+20278 X 26347+20278 66837 56837 (c) N X 7196+26347 x 26347+20278 66837 66837 (d) N x 13016+20278 13016+7196 66837 66837