Online Test — Statistics
10 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 10
medium
The mean of 5, 7, 9, 11, 13 is:
7
8
9
10
Explanation: Sum=45, 45÷5=9
Question 2 of 10
medium
The median of 3, 5, 7, 9, 11 is:
5
7
9
8
Explanation: Middle value of sorted data is 7
Question 3 of 10
medium
The mode of 2, 4, 4, 6, 6, 6, 8 is:
4
6
8
2
Explanation: 6 appears most frequently (3 times)
Question 4 of 10
medium
Which graph has gaps between bars?
Histogram
Bar Graph
Frequency Polygon
Pie Chart
Explanation: Bar graphs have gaps; histograms do not
Question 5 of 10
medium
For grouped continuous data, the best graph is:
Bar Graph
Histogram
Line Graph
Pie Chart
Explanation: Histogram is for continuous grouped data
Question 6 of 10
medium
The median of 12, 15, 18, 21, 24, 27 is:
18
19.5
21
22.5
Explanation: Even n=6, median=(18+21)/2=19.5
Question 7 of 10
medium
A frequency polygon is drawn by connecting:
Top of bars
Midpoints of bars
Bottom of bars
Corners of bars
Explanation: Frequency polygon connects class midpoints
Question 8 of 10
medium
If the mean of 4 numbers is 12, their sum is:
3
16
48
36
Explanation: Sum = Mean × n = 12 × 4 = 48
Question 9 of 10
medium
Which measure is most affected by outliers?
Mean
Median
Mode
Range
Explanation: Mean changes significantly with outliers
Question 10 of 10
medium
A data set with two modes is called:
Unimodal
Bimodal
Trimodal
Multimodal
Explanation: "Bi" means two