Which of the following statements are correct?
(A) The difference between sample variance and population variance computation is μ replaced by x̅.
(B) Cronbach alpha value less than 0.30 indicates reliability of research instrument.
(C) The value of R2 = 1 may imply that regression is spurious.
(D) The identical observation of sample and population parameters shows that every sample can be substituted as population.
(E) Randomise control trial is a qualitative approach to research.
Choose the correct answer from the options given below:
1
(C), (D), (E) only
2
(A), (B), (C), (D) only
3
(A), (C), (D), (E) only
4
(B), (C), (D) only