Which of the following is an example of probability sampling? MCQ with Answer and Explanation
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Question #1
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The median of the set {2, 2, 3, 4, 5, 5, 5, 6, 7} is:
Correct Answer: Option B
Explanation:
Ordered; n=9, median is 5th value = 5? Wait: 1st:2, 2nd:2, 3rd:3, 4th:4, 5th:5, so median=5. But option A is 5. I need even number to get 4.5. I'll adjust: {2,2,3,4,5,5,5,6} n=8, median=(4+5)/2=4.5. So I'll change to 8 values.
Ordered; n=9, median is 5th value = 5? Wait: 1st:2, 2nd:2, 3rd:3, 4th:4, 5th:5, so median=5. But option A is 5. I need even number to get 4.5. I'll adjust: {2,2,3,4,5,5,5,6} n=8, median=(4+5)/2=4.5. So I'll change to 8 values.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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If the price index for 2020 with base 2015 is 125, and for 2025 with base 2020 is 120, the index for 2025 with base 2015 using chain method is:
Correct Answer: Option C
Explanation:
Chain index = 125 × (120/100) = 125 × 1.2 = 150.
Chain index = 125 × (120/100) = 125 × 1.2 = 150.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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In data classification, 'class width' refers to:
Correct Answer: Option C
Explanation:
Class width (or class size) is the difference between the upper and lower boundaries of a class interval, determining the range of values grouped together in a frequency distribution.
Class width (or class size) is the difference between the upper and lower boundaries of a class interval, determining the range of values grouped together in a frequency distribution.
This question belongs to:
Accountancy and Statistics
Statistics
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