I the Basic Question in Testing the Significance of Rho

Multiple Choice

i. The basic question in testing the significance of rho is to see if there is zero correlation in the population from which the sample was selected.
Ii) A z test is used to test the significance of the coefficient of correlation.
Iii) Perfect correlation means that the scatter diagram will appear as a straight line

A) (i) , (ii) and (iii) are all correct statements
B) (i) and (ii) are correct statements, but not (iii) .
C) (i) and (iii) are correct statements but not (ii) .
D) (ii) and (iii) are correct statements but not (i) .
E) All statements are false