A frequency polygon is a graph of: MCQ with Answer and Explanation

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A frequency polygon is a graph of:

A. Cumulative frequencies

B. Class limits against frequencies

C. Class frequencies against class midpoints

D. Class boundaries against frequencies

Answer: Option C

Solution (By JKSSB Mock Tests)

A frequency polygon plots class midpoints on the x‑axis and class frequencies on the y‑axis and joins them by straight lines.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

A 'life table' provides estimates of:

A. Migration rates

B. Probability of dying at each age and life expectancy

C. Population density

D. Fertility rates only

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Correct Answer: Option B

Explanation:
Life tables summarize age-specific mortality and survival.

This question belongs to: Accountancy and Statistics Statistics

Question #2

The sum of frequencies of all classes in a distribution equals:

A. Total number of observations

B. 100

C. Number of classes

D. Mean

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Correct Answer: Option A

Explanation:
Total frequency = N, the number of observations.

This question belongs to: Accountancy and Statistics Statistics

Question #3

Which of the following best defines primary data?

A. Data collected through secondary sources like journals and reports

B. Data collected by an investigator for the first time for a specific purpose

C. Data that has been analyzed and interpreted by another researcher

D. Data obtained from previously published sources

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Correct Answer: Option B

Explanation:
Primary data is original data collected firsthand by the investigator specifically for the current research purpose, distinguishing it from secondary data which is pre-existing.

This question belongs to: Accountancy and Statistics Statistics

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