Class 9 Practice – Level 2 – Set 1 - Statistics

Total questions: 25

The mean of 7 numbers is 28. If one of the numbers, 35, is excluded, what will be the new mean of the remaining 6 numbers?

Topic: Mean

24.5

26.5

None

The median of the data set 18, 21, 19, 25, 23, 24, 22 is:

Topic: Median

None

Find the mode of the following data set: 45, 36, 42, 36, 39, 45, 36.

Topic: Mode

None

In a frequency distribution, the class width is the difference between:

Topic: Frequency Distribution

The upper and lower limits of a class

The cumulative frequencies

The frequencies of adjacent classes

The mode and median

None

If the mean of five numbers is 18 and the sum of foIf the numbers is 70, what is the fifth number?

Topic: Mean

None

The median of the data set 33, 27, 29, 35, 31, 32, 30 is:

Topic: Median

None

What is the mode of the data set: 20, 22, 20, 24, 26, 20, 28?

Topic: Mode

None

The range of the data set 5, 15, 10, 20, 25 is:

Topic: Range

None

In a grouped frequency distribution, the class mark is calculated as:

Topic: Frequency Distribution

The average of the upper and lower class limits

The difference between the upper and lower class limits

The product of the class limits

The sum of all frequencies

None

10.

If the mean of 8 numbers is 12, and one number is replaced by 16, the new mean becomes 13. What is the replaced number?

Topic: Mean

None

11.

The median of the data set 45, 50, 60, 55, 65, 70, 75 is:

Topic: Median

None

12.

Identify the mode of the data set: 32, 33, 34, 35, 32, 33, 34, 32.

Topic: Mode

None

13.

In a frequency distribution, the lower class boundary is:

Topic: Frequency Distribution

The smallest value that can belong to the class

The difference between the upper and lower class limits

The midpoint of the class

The average of all frequencies

None

14.

The range of the data set 42, 56, 35, 48, 62 is:

Topic: Range

None

15.

The mean of a set of numbers is 15. If the sum of the numbers is 90, how many numbers are there in the set?

Topic: Mean

None

16.

The median of the data set 28, 24, 30, 26, 32, 34, 29 is:

Topic: Median

None

17.

What is the mode of the data set: 18, 20, 22, 20, 24, 20, 26?

Topic: Mode

None

18.

In a frequency distribution, the upper class boundary is:

Topic: Frequency Distribution

The largest value that can belong to the class

The difference between the class marks

The average of the class limits

The sum of the frequencies

None

19.

Calculate the range for the data set 16, 22, 18, 24, 28.

Topic: Range

None

20.

The mean of a data set is 35. If each value in the data set is increased by 5, what will be the new mean?

Topic: Mean

None

21.

The median of the data set 9, 14, 18, 21, 24, 28, 30, 35 is:

Topic: Median

18.5

21.5

24.5

22.5

None

22.

Find the mode of the following data set: 11, 13, 15, 17, 11, 13, 11.

Topic: Mode

None

23.

The range of the data set 85, 90, 95, 100, 105 is:

Topic: Range

None

24.

In a frequency distribution, if the class intervals are 10-20, 20-30, and 30-40, what is the class width?

Topic: Frequency Distribution

None

25.

If the mean of a set of numbers is 45, and the total sum of the numbers is 450, how many numbers are there in the set?

Topic: Mean

None

1 out of 25

Time's up

Class 9 Practice – Level 2 – Set 1 - Statistics

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