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Basic statistics
Class 9 · Mathematics · 6 questions
Name: ____________________ Date: ____________
What is the mean of 4, 6, 8, 10, 12?
- A 7
- B 40
- C 9
- D 8
What is the median of 3, 7, 5, 9, 1?
- A 7
- B 3
- C 5
- D 9
What is the mode of 2, 3, 3, 4, 5, 3, 6?
- A 2
- B 4
- C 5
- D 3
The range of the data 5, 12, 8, 20, 3 is:
- A 15
- B 3
- C 20
- D 17
A pie chart shows data as:
- A Dots
- B Sectors of a circle
- C Bars
- D Lines
The mean of 5 numbers is 12. What is their sum?
- A 60
- B 7
- C 2.4
- D 17
Answer key
1. D, 2. C, 3. D, 4. D, 5. B, 6. A
Sum = 40, divided by 5 gives 8.
In order: 1, 3, 5, 7, 9. The middle value is 5.
3 appears most often.
Range = largest minus smallest = 20 - 3 = 17.
A pie chart divides a circle into sectors proportional to the data.
Sum = mean x number of values = 12 x 5 = 60.