In a 2×2 table, if (AB)=100, (Aβ)=150, (αB)=200, (αβ)=250, the total N is: MCQ with Answer and Explanation

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In a 2×2 table, if (AB)=100, (Aβ)=150, (αB)=200, (αβ)=250, the total N is:

A. 700

B. 800

C. 600

D. 900

Answer: Option A

Solution (By JKSSB Mock Tests)

N = sum of all ultimate class frequencies = 100 + 150 + 200 + 250 = 700. This is the total population classified by the two attributes.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

In a life table, the column Lx represents:

A. Number of person-years lived between age x and x+n

B. Number of survivors at age x

C. Probability of dying

D. Number of deaths at age x

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Correct Answer: Option A

Explanation:
Lx is the number of person-years lived in the age interval.

This question belongs to: Accountancy and Statistics Statistics

Question #2

A cumulative frequency distribution shows the number of observations:

A. Only in the first class

B. In the modal class

C. Less than or more than certain values

D. Exactly equal to a value

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Correct Answer: Option C

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

Which measure of central tendency is most appropriate for finding the typical salary in a company with a few very high earners?

A. Mean

B. Mode

C. Harmonic mean

D. Median

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Correct Answer: Option D

Explanation:
Median is robust to outliers and better represents the typical salary.

This question belongs to: Accountancy and Statistics Statistics

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