# Statistics and methodology - Statistics and Methodology Multiple Choice Questions

91:

Match the following

List-I (Degree of correlation)     List-II (Measurement)

(A) Absence of correlation         1. +0.90 or More

(B) Moderate                               2. +1

(C) Perfect                                   3. +0.60 to +0.75

(D) Very high                               4. 0

 A. (A) (B) (C) (d) 1    2    3    4 B. (A) (B) (C) (d) 4    3    2    1 C. (A) (B) (C) (d) 3    1    4    2 D. (A) (B) (C) (d) 3    2    1    4 Answer Report Discuss Option: B Explanation : Click on Discuss to view users comments. Write your comments here:
92:

Given

Σdxdy = 186, Σdx = 11, Σdy = 7, N = 10, Σd2x = 215, Σd2y = 163.

Find out correlation

 A. + 0.72 B. + 0.99 C. + 0.96 D. Answer Report Discuss Option: B Explanation : Hence the answers (b). Click on Discuss to view users comments. Write your comments here:
93:

A machine on the average produces 5% defective articles. What are the mean and standard deviation in sets of 100 articles?

 A. 5.3 B. 3.4 C. 2.2 D. 3.3 Answer Report Discuss Option: C Explanation : Mean = np = 100 x 0.05 = 5 σ = √(npq) = √(0.05 x 0.95 x 100) = 2.2 Hence the answer is (c). Click on Discuss to view users comments. Write your comments here:
94:

If the proportion of defective in a bulk is 4%, find the probability of not more than 2 defectives in a sample of 10, it is known that e-4 = 6703

 A. 99.2% B. 3.06% C. 9.36% D. 4.02% Answer Report Discuss Option: A Explanation : Probability of not more than 2 defectives = 0.6703 + 0.26812 + 0.053624 = 0.992044 x 100 = 99.2% Hence the answer is (a). Click on Discuss to view users comments. Write your comments here:
95:

Management science model consists

 A. Return on investment analysis B. Break-even analysis model C. Budgeting models D. All of the above Answer Report Discuss Option: D Explanation : Click on Discuss to view users comments. Write your comments here:

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