ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 441 - 444 of 472

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Question 441

Question

MCQ▾

What is the relation between the mean deviation (M. D.) from the mean and the standard deviation (S. D.) of the A. P.

Choices

Choice (4)Response

a.

S D = M D

b.

S D < M D

c.

S D > M D

d.

No relationship exist between S D and M D

Question 442

Question

MCQ▾

In a study to test the effectiveness of a new variety of wheat, an experiment was performed with 50 experimental fields and the following results were obtained:

Experiment Was Performed with 50 Experimental Fields
Yield per Hectare (in quintals)Number of Fields
31 - 352
36 - 403
41 - 458
46 - 5012
51 - 5516
56 - 605
61 - 652
66 - 702

The mean yield per hectare is 50 quintals. Determine the standard deviation of the above distribution.

Choices

Choice (4)Response

a.

7.93

b.

7.61

c.

63

d.

58

Question 443

Question

MCQ▾

Which of the following statement is/are correct regarding Statistical Presentation of data?

Choices

Choice (4)Response

a.

Mean is a partition value which divides the series into two nearly equal parts and remains the centre of gravity.

b.

Mode of a data remains unaffected in presence of outliers.

c.

Mean is more robust statistics than median.

d.

All of the above

Question 444

Question

MCQ▾

What is the use of CPU in multitasking operating system?

Choices

Choice (4)Response

a.

Multiple programs to be loaded into memory

b.

Execute the programs concurrently

c.

Switching one program to another program

d.

Corrupting address space