If the covariance of two random variables X and Y is positive, ...

[bobbie]

If the covariance of two random variables X and Y is positive, then Var(X - Y) will be larger than Var(X + Y).
 
  Indicate whether the statement is true or false

Question 2

Which of the following will never be a required condition of a nonparametric test?
 
  A) Data used for the test are ordinal data.
  B) Data used for the test are interval data.
  C) The samples are drawn from normally distributed populations.
  D) The populations being compared are identical in spread and shape.

[Ksh22]

Answer to Question 1

FALSE

Answer to Question 2

C