Life expectancy at birth is denoted in a life table by: MCQ with Answer and Explanation

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Life expectancy at birth is denoted in a life table by:

A. e°_0

B. q_0

C. T_0

D. l_0

Answer: Option A

Solution (By JKSSB Mock Tests)

e°_x represents complete expectation of life at age x. At birth (age 0), it is e°_0.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

The 'bias' in Laspeyres and Paasche price indices is that:

A. Laspeyres tends to overstate price increase, Paasche understates

B. Laspeyres understates, Paasche overstates

C. Both understate

D. Both overstate

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Correct Answer: Option A

Explanation:
Laspeyres uses base period basket, ignoring substitution, so it overstates; Paasche uses current basket, often understating.

This question belongs to: Accountancy and Statistics Statistics

Question #2

A questionnaire should generally begin with:

A. Leading questions

B. Sensitive and personal questions

C. Ambiguous questions

D. Simple and general questions

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Correct Answer: Option D

Explanation:
Starting with simple, non‑threatening questions builds rapport and encourages the respondent to continue.

This question belongs to: Accountancy and Statistics Statistics

Question #3

The complement of the event 'at least one head' in two coin tosses is:

A. No heads (both tails)

B. Two heads

C. At least one tail

D. Exactly one head

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Correct Answer: Option A

Explanation:
Complement of 'at least one head' is 'no heads'.

This question belongs to: Accountancy and Statistics Statistics

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