MCQ on Biometrical Genetics / Quantitative Genetics Part -25 For ARS NET / SRF Exams

 

**1.** Partial correlation coefficient can be tested by

(i)  F test

(ii)  Z test

(iii)  T test

(iv)  χ² test

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**2.** Choose the incorrect statement

(i)  Association between two variables which is entirely due to environmental effects is called as environmental correlation

(ii)  The correlation does not exist in univariate distribution

(iii)  Covariance includes a measure of the sum of products of two variables

(iv)  Correlation is depend upon the unit of measurement

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**3.** Simple, partial and multiple correlations can be estimated from

(i)  Replicated data only

(ii)  Unreplicated data only

(iii)  Both (i) and (ii)

(iv)  None of these

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**4.** All possible combinations of correlation among n variables is equal to

(i)  n(n - 1) / 2

(ii)  n(n + 1) / 2

(iii)  n(n - 1)

(iv)  n(n + 1)

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**5.** Number of covariance between ‘n’ characters is equal to

(i)  n(n - 1) / 2

(ii)  n(n + 1) / 2

(iii)  n(n - 1)

(iv)  n(n + 1)

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**6.** Degree of freedom for testing correlation is

(i)  n - 1

(ii)  n - 2

(iii)  n - 3

(iv)  n - 4

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**7.** If covariance between two variables is zero, then

(i)  Both correlation and regression will be zero

(ii)  Only correlation will be zero but regression will be one

(iii)  Both correlation and regression will be positive

(iv)  None of these