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Home › Subjects › Data Interpretation

Data Interpretation

Timed online tests for practice and assessment

Practice Data Interpretation MCQ questions with detailed answers and step-by-step explanations. 30+ free questions available with instant solutions — perfect for competitive exam preparation.
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Difficulty: All Easy Medium Hard 1–10 of 30
Q.1 Hard
Scatter plot with r=-0.9 shows?
A Strong positive correlation
B No correlation
C Weak negative correlation
D Strong negative correlation
Correct Answer:  D. Strong negative correlation
EXPLANATION

r=-0.9 = strong negative correlation.

Test
Q.2 Easy
Histogram shows frequencies. Y-axis represents?
A Class intervals
B Frequency
C Cumulative frequency
D Relative frequency
Correct Answer:  B. Frequency
EXPLANATION

Y-axis in histogram = frequency.

Test
Q.3 Medium
Variance is square of?
A Mean
B Median
C Standard Deviation
D Range
Correct Answer:  C. Standard Deviation
EXPLANATION

SD²=Variance.

Test
Q.4 Medium
If B market share increases from 35% to 40%, total?
A Becomes 105%
B Others must decrease
C Stays 100%
D Increases
Correct Answer:  B. Others must decrease
EXPLANATION

Total always 100%, others decrease.

Test
Q.5 Easy
Relative frequency: class=15, total=100?
A 10%
B 15%
C 20%
D 25%
Correct Answer:  B. 15%
EXPLANATION

15/100=15%.

Test
Q.6 Medium
Bar chart: 2020=100, 2021=120, 2022=144. Growth rate per year?
A 15%
B 20%
C 25%
D 10%
Correct Answer:  B. 20%
EXPLANATION

120/100=20% each year.

Test
Q.7 Hard
CAGR from 100 to 196 in 2 years?
A 30%
B 40%
C 35%
D 45%
Correct Answer:  B. 40%
EXPLANATION

(196/100)^0.5-1=0.4=40%.

Test
Q.8 Easy
Pie chart: A=35%,B=25%,C=20%,D=15%,E=5%. Total=200. How many in C?
A 35
B 40
C 45
D 50
Correct Answer:  B. 40
EXPLANATION

20% of 200=40.

Test
Q.9 Medium
Coefficient of Variation = ?
A SD/Mean
B Mean/SD
C SD×Mean
D SD+Mean
Correct Answer:  A. SD/Mean
EXPLANATION

CV=SD/Mean×100%.

Test
Q.10 Easy
If all values increase by 10, what happens to mean?
A Stays same
B Increases by 10
C Decreases by 10
D Doubles
Correct Answer:  B. Increases by 10
EXPLANATION

Mean shifts by same constant.

Test

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