Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

If cov (x, y) = 0.6, 𝝈𝒙 ൌ 𝟐, 𝝈𝒚 ൌ 𝟏, then rxy is

A. 0.1
B. 0.3
C. 0.2
Answer» B. 0.3
Discussion
2.

If 𝝈𝒙 ൌ 𝟏𝟎, 𝝈𝒚 ൌ 𝟏𝟐, and bxy = - 0.8, then the value of correlation coefficient (r) is

A. - 0.84
B. - 0.96
C. - 0.75
D. 0.86
Answer» C. - 0.75
Discussion
3.

If 𝝈𝒚 ൌ 𝟒, byx = 0.48, r = 0.6, then is 𝝈𝒙

A. 5
B. 7
C. 9
D. 6.5
Answer» B. 7
Discussion
4.

If y + 2x = 10; 𝒙ഥ = 3 and Var (y) = 25, then C.V. of y is

A. 100%
B. 150%
C. 125%
D. 50%
Answer» D. 50%
Discussion
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