# Statistics and methodology - Statistics and Methodology Multiple Choice Questions

76:

The information technology choice is a

 A. Strategic decision B. Co-ordinated decision C. Planned decision D. Directed decision Answer Report Discuss Option: A Explanation : Click on Discuss to view users comments. Write your comments here:
77:

Which of the following statement is/are true?

 A. The basic understanding of the processes is essential even though the technology is a significant factor in a good design of information systems. B. The business management process has changed from function management to process management. C. The development of modern information system is a complex process. D. All of the above. Answer Report Discuss Option: D Explanation : Click on Discuss to view users comments. Write your comments here:
78:

Match the following

List-I (Types of system) List-II (Elements)

(A) Data processing 1. Sales

(B) Transaction processing 2. Process management

(C) Functional system 3. Focus on computing

(D) Integrated 4. Transaction execution

 A. (A) (B) (C) (d) 1    4    3    2 B. (A) (B) (C) (d) 3    4    1    2 C. (A) (B) (C) (d) 1    2    3    4 D. (A) (B) (C) (d) 1    3    2    4 Answer Report Discuss Option: B Explanation : Click on Discuss to view users comments. Write your comments here:
79:

If covariance of X and Y is 12.3, variance of X is 16.4 and variance of Y is 13.8, then r will be

 A. +0.79 B. +0.82 C. +0.80 D. +0.83 Answer Report Discuss Option: B Explanation : Hence the answer is (b). Click on Discuss to view users comments. Write your comments here:
80:

Eight coins are tossed together and the occurrence of a head is termed a success. Write down the Binomial distribution of probabilities for the occurrence of 0, 1, 2....8 heads. What is the arithmetic mean and what is the variance of this distribution?

 A. 2 B. 9 C. 3 D. 5 Answer Report Discuss Option: A Explanation : P = 1/2, q = 1/2, n = 8 Mean = np = 8 x 1/2 = 4 Variance (σ)2 = npq or         8 x 1/2 x 1/2 = 2 Click on Discuss to view users comments. Write your comments here: