In a frequency distribution, the cumulative frequency of the last class is equal to: MCQ with Answer and Explanation
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Question #1
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The primary advantage of secondary data is:
Correct Answer: Option A
Explanation:
Secondary data is already available, reducing time and cost of collection.
Secondary data is already available, reducing time and cost of collection.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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In a moderately skewed distribution, if the mean is 45 and the mode is 39, the median is approximately:
Correct Answer: Option B
Explanation:
Using the empirical relationship: Mode ≈ 3×Median - 2×Mean. Rearranging: Median ≈ (Mode + 2×Mean)/3 = (39 + 90)/3 = 129/3 = 43. This approximation holds for moderately skewed unimodal distributions.
Using the empirical relationship: Mode ≈ 3×Median - 2×Mean. Rearranging: Median ≈ (Mode + 2×Mean)/3 = (39 + 90)/3 = 129/3 = 43. This approximation holds for moderately skewed unimodal distributions.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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If (AB)=(A)(B)/N, the attributes are:
Correct Answer: Option A
Explanation:
That equation is the condition for independence of attributes.
That equation is the condition for independence of attributes.
This question belongs to:
Accountancy and Statistics
Statistics
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