In a frequency polygon, the points plotted are: MCQ with Answer and Explanation

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In a frequency polygon, the points plotted are:

A. Lower limits vs frequencies

B. Upper limits vs frequencies

C. Class midpoints vs frequencies

D. Cumulative frequencies vs upper boundaries

Answer: Option C

Solution (By JKSSB Mock Tests)

A frequency polygon connects the midpoints of histogram bars at their respective frequencies.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

A fixed base index uses:

A. A single, constant base period for all comparisons

B. A different base period for each time point

C. The immediately preceding period as the base for each calculation

D. Geometric mean of multiple base periods

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Correct Answer: Option A

Explanation:
Fixed base index selects one period as the base (index=100) and expresses all other periods relative to it, enabling consistent long-term trend analysis without base drift.

This question belongs to: Accountancy and Statistics Statistics

Question #2

A bag contains 3 red and 4 black balls. If two balls are drawn at random without replacement, what is the probability that both are red?

A. 2/7

B. 1/7

C. 9/49

D. 3/14

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Correct Answer: Option B

Explanation:
P(Both Red) = (3/7) × (2/6) = 6/42 = 1/7.

This question belongs to: Accountancy and Statistics Statistics

Question #3

The total fertility rate (TFR) is the sum of age-specific fertility rates multiplied by the width of age interval. If 5-year groups, it is multiplied by:

A. 10

B. 5

C. 1

D. 1000

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Correct Answer: Option B

Explanation:
TFR = 5 × Σ ASFR (per woman) if ASFR are computed per 1000 women per 5-year interval and divided by 1000 appropriately. Actually, if ASFRs are in per 1000, TFR = 5 × Σ ASFR_i / 1000.

This question belongs to: Accountancy and Statistics Statistics

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