Data Interpretation
Timed online tests for practice and assessment
Showing 1–10 of 30 questions
Q.1
Hard
Scatter plot with r=-0.9 shows?
Correct Answer:
D. Strong negative correlation
EXPLANATION
r=-0.9 = strong negative correlation.
Q.2
Easy
Histogram shows frequencies. Y-axis represents?
Correct Answer:
B. Frequency
EXPLANATION
Y-axis in histogram = frequency.
Q.3
Medium
Variance is square of?
Correct Answer:
C. Standard Deviation
EXPLANATION
SD²=Variance.
Q.4
Medium
If B market share increases from 35% to 40%, total?
Correct Answer:
B. Others must decrease
EXPLANATION
Total always 100%, others decrease.
Q.5
Easy
Relative frequency: class=15, total=100?
Correct Answer:
B. 15%
EXPLANATION
15/100=15%.
Q.6
Medium
Bar chart: 2020=100, 2021=120, 2022=144. Growth rate per year?
Correct Answer:
B. 20%
EXPLANATION
120/100=20% each year.
Q.7
Hard
CAGR from 100 to 196 in 2 years?
Correct Answer:
B. 40%
EXPLANATION
(196/100)^0.5-1=0.4=40%.
Q.8
Easy
Pie chart: A=35%,B=25%,C=20%,D=15%,E=5%. Total=200. How many in C?
Correct Answer:
B. 40
EXPLANATION
20% of 200=40.
Q.9
Medium
Coefficient of Variation = ?
Correct Answer:
A. SD/Mean
EXPLANATION
CV=SD/Mean×100%.
Q.10
Easy
If all values increase by 10, what happens to mean?
Correct Answer:
B. Increases by 10
EXPLANATION
Mean shifts by same constant.