If P(A) = 2/3 and P(B) = 1/2 and A, B are independent, then P(A∩B) is: MCQ with Answer and Explanation

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If P(A) = 2/3 and P(B) = 1/2 and A, B are independent, then P(A∩B) is:

A. 1/2

B. 1/6

C. 2/3

D. 1/3

Answer: Option D

Solution (By JKSSB Mock Tests)

2/3 × 1/2 = 1/3.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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Perinatal mortality rate includes:

A. Stillbirths and deaths in the first week of life

B. Deaths under one year

C. All infant deaths

D. Maternal deaths

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Correct Answer: Option A

Explanation:
Perinatal mortality covers late fetal deaths (stillbirths) and early neonatal deaths (first 7 days).

This question belongs to: Accountancy and Statistics Statistics

Question #2

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For the above frequencies, Yule's coefficient of association Q is:

A. 0.714

B. 0.5

C. 0.33

D. 0.8

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Correct Answer: Option A

Explanation:
ad = 30×40 = 1200, bc = 20×10 = 200. Q = (1200-200)/(1200+200) = 1000/1400 = 0.714.

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Question #3

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The difference between a histogram and a bar chart is:

A. Histogram uses frequency, bar chart uses cumulative frequency

B. No difference

C. Histogram is for continuous data, bar chart for discrete/categorical

D. Bar chart uses bars, histogram uses lines

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Correct Answer: Option C

Explanation:
Histogram represents frequency distribution of continuous variables, while bar chart is for categorical data with gaps between bars.

This question belongs to: Accountancy and Statistics Statistics

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