# 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:

 Yield per Hectare (in quintals) Number of Fields 31 - 35 2 36 - 40 3 41 - 45 8 46 - 50 12 51 - 55 16 56 - 60 5 61 - 65 2 66 - 70 2

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.