The number of observations falling in a particular class is called: MCQ with Answer and Explanation

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The number of observations falling in a particular class is called:

A. Relative frequency

B. Cumulative frequency

C. Class mark

D. Class frequency

Answer: Option D

Solution (By JKExamLibrary)

Class frequency is the count of data points within a class interval.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1 Report Error

If a die is rolled, the sample space is:

A. {0,1,2,3,4,5,6}

B. {1,2,3,4,5,6}

C. {2,4,6}

D. {1,2,3,4,5}

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Correct Answer: Option B

Explanation:
A fair die has six possible outcomes: 1,2,3,4,5,6.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

If the arithmetic mean of 5 numbers is 20, and the arithmetic mean of another 3 numbers is 28, the combined mean of all 8 numbers is:

A. 22

B. 24

C. 25

D. 23

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Correct Answer: Option D

Explanation:
Combined mean = (5×20 + 3×28) / (5+3) = (100 + 84) / 8 = 184 / 8 = 23. This formula weights each group's mean by its size.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

The geometric mean is preferred for averaging:

A. Heights of students

B. Temperatures

C. Test scores

D. Percentage growth rates

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Correct Answer: Option D

Explanation:
Geometric mean is suitable for averaging ratios and rates of change over time.

This question belongs to: Accountancy and Statistics Statistics

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