A frequency distribution with classes 10-20, 20-30, 30-40 … is called: MCQ with Answer and Explanation

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A frequency distribution with classes 10-20, 20-30, 30-40 … is called:

A. Cumulative series

B. Inclusive series

C. Exclusive series

D. Open-end series

Answer: Option C

Solution (By JKSSB Mock Tests)

The upper limit of a class is the lower limit of the next; an observation equal to the upper limit goes to the next class.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

The sum of absolute deviations of values is minimum when measured from the:

A. Mode

B. Geometric Mean

C. Mean

D. Median

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Correct Answer: Option D

Explanation:
A mathematical property of the Median is that the sum of the absolute deviations (ignoring signs) from it is minimized.

This question belongs to: Accountancy and Statistics Statistics

Question #2

In a set of 10 values, the sum of deviations from 5 is 20 and from 6 is 10. The mean is:

A. 6

B. 8

C. 7

D. 5.5

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Correct Answer: Option C

Explanation:
Σ(x-5)=Σx -50=20 → Σx=70. Mean=7. Check: Σ(x-6)=70-60=10, correct.

This question belongs to: Accountancy and Statistics Statistics

Question #3

According to Census 2011, the population density of India (persons per sq km) is:

A. 455

B. 282

C. 324

D. 382

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Correct Answer: Option D

Explanation:
The population density of India in 2011 was 382 persons per square kilometer.

This question belongs to: Accountancy and Statistics Statistics

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