In a frequency distribution with unequal class intervals, the heights of rectangles in a histogram are proportional to: MCQ with Answer and Explanation

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In a frequency distribution with unequal class intervals, the heights of rectangles in a histogram are proportional to:

A. Relative frequency

B. Cumulative frequency

C. Frequency

D. Frequency density

Answer: Option D

Solution (By JKSSB Mock Tests)

When class widths differ, area represents frequency, so height = frequency / width.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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In a distribution, the mode is 30, median 32, mean 34. The distribution is:

A. Negatively skewed

B. Symmetric

C. Leptokurtic

D. Positively skewed

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Correct Answer: Option D

Explanation:
Mean > Median > Mode indicates positive skewness.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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Consider the following pairs: (1) CBR - Per 1000 population, (2) GFR - Per 1000 women aged 15-49, (3) IMR - Per 1000 live births. Which pair is correctly matched?

A. 2 and 3 only

B. 1 and 3 only

C. 1, 2 and 3

D. 1 and 2 only

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Correct Answer: Option C

Explanation:
All three definitions are correct.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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If A and B are two attributes, the symbol (α) denotes:

A. Number possessing both A and B

B. Number possessing neither A nor B

C. Number not possessing attribute A

D. Number possessing attribute A

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Correct Answer: Option C

Explanation:
α (alpha) is the negation of A; (α) is the number of items that do not possess attribute A.

This question belongs to: Accountancy and Statistics Statistics

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