1 2 315676. Which of the following 15. The correlation coefficient for the data

Question

1 2 315676. Which of the following 15. The correlation coefficient for the data set data sets have exactly the same correlation coefficient as the above data set? x 50 60 70 80 90 y 102 103 101 105 106 yl-1 0 i 23 x 2 3 1 5 6 (d) Both (a) and (c) (e) Both (b) and (c) (f) None of the above data sets have exactly the same correlation coefficient 16. Several different regression ines are used to predict the price of a stock (from different independent variables). Histograms for the residuals from each line are given below. Which of the statements below are true? Kii) 650 -450 25 (a) something's wrong with graph i) (b) the r.m.s. error $5 applies to graph ii) (c) the r..s. error-$15 applies to graph (iii) (d) both (b) and (c) (e) all of the above

Explanation / Answer

15 ) d ) Both ( a) and ( c ) .

The correct option is ( d ) .

16 ) ( d ) Both ( b ) and ( c ) .

The correct option is ( d ) .

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