Online Test — Measures of Central Tendency
10 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 10
Find the mean of: 10, 20, 30, 40, 50
25
30
35
40
Explanation: Sum=150, n=5, mean=30
Question 2 of 10
Find the median of: 12, 15, 11, 18, 20
12
15
18
20
Explanation: Sorted: 11,12,15,18,20 → middle is 15
Question 3 of 10
Find the mode of: 3, 5, 3, 7, 9, 3, 5
3
5
7
9
Explanation: 3 appears 3 times (most frequent)
Question 4 of 10
Find the range of: 25, 30, 35, 40, 45, 50
15
20
25
30
Explanation: Range=50-25=25
Question 5 of 10
The mean of five numbers is 18. Find their sum.
72
80
90
100
Explanation: Sum = mean × n = 18 × 5 = 90
Question 6 of 10
Find the median of: 5, 8, 12, 15, 20, 25
12.5
13
13.5
14
Explanation: Even n=6, middle=12 and 15, avg=13.5
Question 7 of 10
Which measure is most affected by outliers?
Mean
Median
Mode
Range
Explanation: Mean is pulled by extreme values
Question 8 of 10
A data set has two modes. It is called:
Unimodal
Bimodal
Trimodal
Multimodal
Explanation: Two modes = bimodal
Question 9 of 10
For categorical data (like colors), which measure is appropriate?
Mean
Median
Mode
Range
Explanation: Mode works for non-numeric data
Question 10 of 10
Test scores: 60, 65, 70, 75, 80, 85, 90. Find the median.
70
75
80
85
Explanation: 7 values, 4th position = 75