A 'life table' provides estimates of: MCQ with Answer and Explanation

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A 'life table' provides estimates of:

A. Population density

B. Migration rates

C. Fertility rates only

D. Probability of dying at each age and life expectancy

Answer: Option D

Solution (By JKSSB Mock Tests)

Life tables summarize age-specific mortality and survival.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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In a frequency distribution, the modal class is the class with:

A. Highest frequency

B. Highest class mark

C. Median value

D. Largest class interval

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Correct Answer: Option A

Explanation:
The mode is the most frequent value; the modal class is the interval with the maximum frequency.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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In a frequency distribution, the class width is computed as:

A. Lower limit + upper limit

B. Upper limit - lower limit (for exclusive classes)

C. Midpoint × 2

D. Frequency / total

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Correct Answer: Option B

Explanation:
Class width = difference between boundaries for exclusive classes.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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In a well-designed questionnaire, questions on income should be:

A. At the beginning to motivate

B. In the middle, with no introduction

C. Towards the end, as they are sensitive

D. Randomly placed

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Correct Answer: Option C

Explanation:
Sensitive questions are placed later to build trust and reduce dropout.

This question belongs to: Accountancy and Statistics Statistics

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