Which method is most suitable when the field of investigation is vast and informants are educated? MCQ with Answer and Explanation

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Which method is most suitable when the field of investigation is vast and informants are educated?

A. Direct interview

B. Schedule method

C. Observation method

D. Mailed questionnaire

Answer: Option D

Solution (By JKSSB Mock Tests)

Mailed questionnaire can reach a large geographic area at low cost, provided respondents are literate.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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If a population has a high proportion of young people, the crude death rate may be low even if age-specific rates are high. This is an example of:

A. Age structure effect

B. Reverse causality

C. Direct standardization

D. Sampling error

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Correct Answer: Option A

Explanation:
A young population has fewer old people where mortality is high, thus CDR can be low.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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In a life table, the column Lx represents:

A. Number of deaths at age x

B. Number of survivors at age x

C. Number of person-years lived between age x and x+n

D. Probability of dying

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Correct Answer: Option C

Explanation:
Lx is the number of person-years lived in the age interval.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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Two events are mutually exclusive if they:

A. Have equal probabilities

B. Cannot occur together

C. Always occur together

D. Can occur together

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Correct Answer: Option B

Explanation:
Mutually exclusive events have no common outcome; P(A∩B) = 0.

This question belongs to: Accountancy and Statistics Statistics

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