# Free CBSE Class 9 Mathematics Unit 6-Statistics and Probability Statistics Worksheets

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## Sample CBSE Class 9 Mathematics Unit 6-Statistics and Probability Statistics Worksheet Questions

1.
Fill in the blanks: Tally marks are used to find _____________
1. Class limit 2. Frequency 3. Class mark 4. None of these
2.
Fill in the blanks: In a histogram, each class rectangle is constructed with base as ____________
1. Class interval 2. Frequency 3. Class limit 4. None of these
3.
Fill in the blanks: Median of first 10 odd natural number is ______
1. 3 2. 7 3. 9 4. 5
4.
Choose the correct option: The maximum frequency 10 is for the observation 4. The mode of the data is _________.
1. 10 2. 4 3. 3 4. None of these
5.
Choose the correct option: The median of observations 17, 18, 20, 22, x+2, x+4, 31, 35, 37 is found to be 24. If the observations have been arranged in ascending order, the value of x will be ________.
1. 22 2. 30 3. 20 4. 25
6.
The data has been arranged in ascending order: 14, 19, 25, 29, x, 39, 41, 48, 54. If the median of the data is 35. Find x.
1. 34 2. 39 3. 33 4. 35
7.
The mean of 200 observations is 60. If one of the observation which was 100 is replaced by 300 then what will be the resulting mean?
8.
The width of each of five continuous classes in a frequency distribution is 5 and the lower class limit of the lowest class is 10. What is the upper class limit of the highest class?
9.
The mean of 20, 25, x, 35, 40 is 30. What is the value of x?
10.
What is the median of the data 78, 56, 22, 34, 45, 54, 39, 68, 54, 84?

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