Which type of classification is used when data is grouped according to time periods such as years, months, or quarters? MCQ with Answer and Explanation

Which type of classification is used when data is grouped according to time periods such as years, months, or quarters?
A. Quantitative classification
B. Qualitative classification
C. Chronological classification
D. Spatial classification
Answer: Option C
Solution (By JKSSB Mock Tests)
Chronological classification organizes data based on time sequences, enabling analysis of trends, patterns, and changes over specific periods like years or months.

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Question #1
General Fertility Rate (GFR) improves upon CBR by:
A. Restricting the denominator to women aged 15-49 years
B. Including stillbirths in the numerator
C. Using mid-year population of both sexes
D. Adjusting for infant mortality

Correct Answer: Option A


Explanation:
GFR = (Live births / Women aged 15-49) × 1,000, focusing on the biologically relevant population for childbearing, making it a more refined fertility measure than CBR.

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Question #2
For a symmetric distribution, which statement is correct?
A. Mean = Median = Mode
B. Mean - Mode = 3(Mean - Median)
C. Median = (Mean + Mode)/2
D. Mode = 3Median - 2Mean

Correct Answer: Option A


Explanation:
In a perfectly symmetric distribution, all three central measures coincide.

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Question #3
If attributes A and B are independent, the expected frequency of (αβ) is:
A. (A)×(B)/N
B. Observed (αβ)
C. (α)×(β)/N
D. (α)×(β)/N²

Correct Answer: Option C


Explanation:
Under independence, each cell frequency equals product of margins divided by N.

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