answer Covariance is: a. A measure of linear association among at least three variables. b. A...
answer
Covariance is:
a. A measure of linear association among at least three variables. b. A value between -1 and +1. c. Standard deviation squared. d. None of the above.
Homework Answers
Covariance is:
None of the above (d)
[ explanation:-
covariance between two variables X and Y be:-
a). A measure of linear association among at least three variables...the option is false because,
Covariance measures the directional relationship between two variables.
b).A value between -1 and +1,the option is false because,
it can take any value.....the correlation coefficient lies within -1 and +1.
c).standard deviation squared,the option is false because,
because variance is known to be the square of standard deviation.
d). None of the above,
so, THIS ONE IS TRUE. ]
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