Which of the following statements about reliability of a test are correct?
(i) Reliability is fixed for a given test.
(ii) It is a correlation of the test with itself.
(iii) It varies from sample to sample.
(iv) it is not affected by the size of the sample
(v) High reliability ensures high validity
1
(i), (iii) and (iv)
2
(ii), (iii) and (v)
3
(i) and (iv)
4
(ii) and (iii)