If a population has a crude birth rate of 30 and crude death rate of 10 per 1000, the natural increase rate (per 1000) is: MCQ with Answer and Explanation

Question

If a population has a crude birth rate of 30 and crude death rate of 10 per 1000, the natural increase rate (per 1000) is:

A. 40

B. 20

C. 2

D. 3

Answer: Option B

Solution (By JKSSB Mock Tests)

Rate of natural increase = CBR - CDR = 30 - 10 = 20 per 1000.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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The main advantage of using secondary data is that it:

A. Saves time and cost compared to primary data collection

B. Guarantees higher accuracy than primary data

C. Is always tailored to the researcher's specific needs

D. Eliminates the need for data validation

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Correct Answer: Option A

Explanation:
Secondary data is readily available from existing sources, significantly reducing the time, effort, and financial resources required for data collection compared to gathering primary data.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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The mid-value of a class interval is 25 and the class width is 10. The class limits (exclusive) are:

A. 25-35

B. 20-30 inclusive

C. 20-30

D. 15-25

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Correct Answer: Option C

Explanation:
Lower limit = mid-value - width/2 = 25 - 5 = 20; upper limit = 25 + 5 = 30.

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Question #3

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Which of the following pairs of events are mutually exclusive?

A. Getting a 3 and an odd number on a die

B. Drawing a heart and a queen in one card draw

C. Getting an even number and a prime number on a die

D. Getting a head and a tail on a single coin toss

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Correct Answer: Option D

Explanation:
A single toss cannot result in both head and tail; they are mutually exclusive.

This question belongs to: Accountancy and Statistics Statistics

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