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Q.2301
Medium
Data Interpretation
Coefficient of Variation = ?
Correct Answer:
A. SD/Mean
EXPLANATION
CV=SD/Mean×100%.
Q.2302
Easy
Data Interpretation
If all values increase by 10, what happens to mean?
Correct Answer:
B. Increases by 10
EXPLANATION
Mean shifts by same constant.
Q.2303
Medium
Data Interpretation
Standard deviation measures?
Correct Answer:
C. Spread of data
EXPLANATION
SD = spread/dispersion.
Q.2304
Easy
Data Interpretation
Correlation: points go bottom-left to top-right?
Correct Answer:
C. Positive
EXPLANATION
Positive correlation.
Q.2305
Medium
Data Interpretation
Frequency density: frequency=20, class width=5?
Correct Answer:
A. 4
EXPLANATION
20/5=4.
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Q.2306
Easy
Data Interpretation
Range of: 25,28,22,30,27?
Correct Answer:
C. 8
EXPLANATION
Max-Min=30-22=8.
Q.2307
Easy
Data Interpretation
Mode of: 3,5,3,7,5,3,8,5,3?
Correct Answer:
A. 3
EXPLANATION
3 appears 4 times, most frequent.
Q.2308
Medium
Data Interpretation
Total=100, 40% passed Math, 60% English, 20% both. Passed at least one?
Correct Answer:
B. 80
EXPLANATION
40+60-20=80.
Q.2309
Hard
Data Interpretation
Median income=40000, mean=45000. Distribution?
Correct Answer:
C. Right skewed
EXPLANATION
Mean>Median = right skewed.
Q.2310
Medium
Data Interpretation
Sales growth from 100 to 160?
Correct Answer:
C. 60%
EXPLANATION
(160-100)/100×100=60%