Agricultural Statistics - Study Mode

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[#201] If standard deviation of x is 5, then the standard deviation of (4x + 8) will be

(A) 25

(B) 28

(C) 20

(D) 24

Correct Answer

(C) 20

[#202] When r is zero, the regression lines cut each other making an angle of

(A) 30°

(B) 60°

(C) 90°

(D) None of these

Correct Answer

(D) None of these

[#203] Student's t-test is used when sample size is . . . . . . . . and population standard deviation is not known.

(A) Large

(B) Small

(C) Both A and B

(D) None of these

Correct Answer

(B) Small

[#204] The df of error in LSD with 6 treatments will be

(A) 10

(B) 5

(C) 6

(D) 20

Correct Answer

(D) 20

[#205] The mean and coefficient of variation of a distribution is 100 and 35% standard deviation will be

(A) 3.5

(B) 0.35

(C) 2.86

(D) 35

Correct Answer

(D) 35