In a continuous frequency distribution, what does the term 'class mark' refer to? MCQ with Answer and Explanation

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In a continuous frequency distribution, what does the term 'class mark' refer to?

A. The sum of frequencies up to that class

B. The frequency of the specific class

C. The midpoint of the class interval

D. The difference between upper and lower limits

Answer: Option C

Solution (By JKSSB Mock Tests)

The class mark is calculated as (Upper Limit + Lower Limit) / 2 and represents the entire class in calculations.

This question belongs to: Accountancy and Statistics Statistics

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When data is classified according to time (e.g., years, months, weeks), it is called:

A. Conditional classification

B. Geographical classification

C. Discrete classification

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Correct Answer: Option D

Explanation:
Chronological classification arranges data in order of time, forming a time series.

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Population density is defined as:

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Correct Answer: Option D

Explanation:
Population density is commonly expressed as the number of persons per unit area, usually per sq. km.

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Wholesale Price Index (WPI) in India primarily measures price changes for goods at which stage?

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Correct Answer: Option A

Explanation:
WPI tracks price movements of goods traded in bulk at the wholesale level (first point of mass sale), reflecting producer and wholesale market inflation, distinct from consumer-focused CPI.

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