The term 'Demography' was first used by: MCQ with Answer and Explanation

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The term 'Demography' was first used by:

A. Thomas Malthus

B. John Graunt

C. Karl Pearson

D. Achille Guillard

Answer: Option D

Solution (By JKSSB Mock Tests)

Achille Guillard coined the term 'Demography' in 1855 in his book 'Elements de Statistique Humaine'.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

Which measure of central tendency minimizes the sum of absolute deviations?

A. Mode

B. Geometric mean

C. Median

D. Arithmetic mean

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Correct Answer: Option C

Explanation:
Median minimizes Σ|x - M|, while mean minimizes Σ(x - μ)².

This question belongs to: Accountancy and Statistics Statistics

Question #2

A cumulative frequency distribution shows the number of observations:

A. Exactly equal to a value

B. Less than or more than certain values

C. Only in the first class

D. In the modal class

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Correct Answer: Option B

Explanation:
Cumulative frequencies sum frequencies up to a certain point (less than type) or from a point (more than type).

This question belongs to: Accountancy and Statistics Statistics

Question #3

The geometric mean of a set of 5 positive observations is 6. Four of them are 3, 6, 4, and 9. The fifth observation is:

A. 12

B. 10

C. 18

D. 8

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Correct Answer: Option A

Explanation:
G.M.^5 = 6^5 = 7776. Product of known four = 3*6*4*9 = 648. Fifth = 7776/648 = 12.

This question belongs to: Accountancy and Statistics Statistics

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