In a continuous frequency distribution, what does the term 'class mark' refer to? MCQ with Answer and Explanation

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In a continuous frequency distribution, what does the term 'class mark' refer to?
A. The midpoint of the class interval
B. The difference between upper and lower limits
C. The sum of frequencies up to that class
D. The frequency of the specific class
Answer: Option A
Solution (By JKExamLibrary)
The class mark is calculated as (Upper Limit + Lower Limit) / 2 and represents the entire class in calculations.
This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error
For a continuous variable, which graph is most suitable?
A. Bar chart
B. Pie chart
C. Ogive only
D. Histogram
Discuss

Correct Answer: Option D

Explanation:
Histogram represents continuous grouped data.
This question belongs to: Accountancy and Statistics Statistics
Question #2 Report Error
Weighted index numbers are preferred over simple indices because they:
A. Always satisfy the circular test
B. Do not require quantity data
C. Account for the relative importance of different items in the basket
D. Are easier to calculate
Discuss

Correct Answer: Option C

Explanation:
Weighted indices assign weights (e.g., expenditure shares) to reflect the economic significance of items, providing a more realistic measure of overall change than simple indices that treat all items equally.
This question belongs to: Accountancy and Statistics Statistics
Question #3 Report Error
The term 'demographic transition' refers to:
A. Migration from rural to urban areas
B. Shift from high birth and death rates to low birth and death rates
C. Increase in population density
D. Change in age structure only
Discuss

Correct Answer: Option B

Explanation:
Demographic transition is the historical shift from high fertility/mortality to low fertility/mortality.
This question belongs to: Accountancy and Statistics Statistics
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