Which two measures do an analysis of linear dependency use?
a.The mean and median
b.The mean and cumulative distribution function
c.The covariance and coefficient of linear correlation
d.The mean and standard deviation
Question 2
Which of the following statements regarding the correlation is not true?
a.

does not imply independence.
b.For any two random variables,
X and
Y,

c.The correlation coefficient is equal to the covariance.
d.
or
if there is s perfect linear prediction in the population.