Total Fertility Rate (TFR) is obtained by summing ASFRs for all age groups and multiplying by 5 if 5-year age groups are used. This is because: MCQ with Answer and Explanation

Question

Total Fertility Rate (TFR) is obtained by summing ASFRs for all age groups and multiplying by 5 if 5-year age groups are used. This is because:

A. To adjust for mortality

B. To convert rate per 1000 to children per woman

C. Each ASFR represents a 5-year period

D. To standardize for age

Answer: Option C

Solution (By JKSSB Mock Tests)

Summing ASFRs for 5-year groups gives average children per woman for the 5-year span, so multiply by 5.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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Data on attributes is said to be inconsistent if:

A. The sum of positive frequencies equals N

B. Any class frequency is greater than N

C. Both A and B

D. Any class frequency is negative

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Correct Answer: Option C

Explanation:
Frequencies represent counts, so they cannot be negative, nor can any subset exceed the total population (N).

This question belongs to: Accountancy and Statistics Statistics

Question #2

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The harmonic mean of 1, 2, and 4 is:

A. 7/3

B. 3/7

C. 7/12

D. 12/7

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Correct Answer: Option D

Explanation:
HM = 3 / (1 + 1/2 + 1/4) = 3 / 1.75 = 12/7.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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A data set has a mean of 50 and a standard deviation of 5. If 3 is added to each value, the new coefficient of variation is:

A. 9.43%

B. Unchanged

C. 12%

D. 10%

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Correct Answer: Option A

Explanation:
New mean = 53, SD unchanged=5. CV = (5/53)×100 ≈ 9.43%.

This question belongs to: Accountancy and Statistics Statistics

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