Class 10 Practice – Level 2 – Set 1 – Statistics

Total questions: 25

The following table shows the distribution of the salaries (in thousands) of employees in a company:

Topic: Mean of Grouped Data

Salary (in thousands)	Number of Employees
10-20	5
20-30	12
30-40	18
40-50	20
50-60	10

What is the mean salary of the employees?

37.5

None

The following data represents the ages of participants in a marathon:

Topic: Median of Grouped Data

Age (Years)	Frequency
10-20	10
20-30	15
30-40	20
40-50	25
50-60	10

What is the median age of the participants?

30.1

35.3

37.5

40.6

None

Given the following data on the number of hours studied by students in a week:

Topic: Mode of Grouped Data

Hours Studied	Frequency
0-10	5
10-20	10
20-30	20
30-40	15
40-50	10

What is the mode of the number of hours studied?

None

The cumulative frequency distribution of the weights (in kg) of 50 students is as follows:

Topic: Cumulative Frequency

Weight (kg)	Cumulative Frequency
40-50	8
50-60	20
60-70	35
70-80	50

What is the frequency of students weighing between 50-60 kg?

None

The following table shows the distribution of marks obtained by 50 students in a test

Topic: Mean of Grouped Data

Marks Obtained	Number of Students
0-10	5
10-20	8
20-30	15
30-40	12
40-50	10

What is the mean of the marks obtained?

22.2

27.8

28.6

None

For the following data, calculate the median:

Topic: Median of Grouped Data

Class Interval	Frequency
0-20	6
20-40	14
40-60	10
60-80	5

35.25

36.42

45.01

26.31

None

Given the following frequency distribution of daily sales (in thousands) at a store:

Topic: Mode of Grouped Data

Sales (in thousands)	Frequency
10-20	5
20-30	8
30-40	12
40-50	10
50-60	5

What is the mode of daily sales?

None

The distribution of the heights of 60 plants is given below:

Topic: Mean of Grouped Data

Height (cm)	Number of Plants
0-20	10
20-40	15
40-60	20
60-80	10
80-100	5

What is the mean height of the plants?

None

The following table represents the cumulative frequency distribution of the weekly income (in Rs.) of 100 workers:

Topic: Cumulative Frequency

Income (Rs.)	Cumulative Frequency
500-1000	20
1000-1500	45
1500-2000	75
2000-2500	100

What is the frequency of workers earning between Rs. 1500 and Rs. 2000?

None

10.

Given the following frequency distribution of the ages of people in a community:

Topic: Median of Grouped Data

Age (Years)	Frequency
20-30	8
30-40	12
40-50	20
50-60	10

What is the median age?

None

11.

The distribution of scores obtained by students in an exam is given below:

Topic: Mode of Grouped Data

Scores	Frequency
20-30	10
30-40	15
40-50	20
50-60	12
60-70	8

42.10

43.84

48.02

50.11

None

12.

The following table shows the distribution of the number of vehicles passing through a toll gate in an hour:

Topic: Mean of Grouped Data

Number of Vehicles	Frequency
0-10	5
10-20	12
20-30	20
30-40	18
40-50	10

What is the mean number of vehicles passing through the toll gate?

None

13.

The cumulative frequency distribution of the marks obtained by 100 students is as follows:

Topic: Cumulative Frequency

Marks Obtained	Cumulative Frequency
0-20	15
20-40	35
40-60	70
60-80	90
80-100	100

What is the frequency of students scoring between 40-60 marks?

None

14.

For the following frequency distribution of weekly expenses (in Rs.):

Topic: Median of Grouped Data

Weekly Expenses (Rs.)	Frequency
200-400	8
400-600	12
600-800	15
800-1000	10
1000-1200	5

What is the median weekly expense?

600

650

700

750

None

15.

The number of children in different families is distributed as follows:

Topic: Mode of Grouped Data

Number of Children	Frequency
0-2	10
2-4	20
4-6	15
6-8	5

What is the mode of the number of children?

2.5

3.3

3.5

None

16.

The following table shows the distribution of the weights (in kg) of 50 people:

Topic: Mean of Grouped Data

Weight (kg)	Number of People
40-50	5
50-60	15
60-70	20
70-80	10

What is the mean weight?

None

17.

The cumulative frequency distribution of the heights of students is as follows:

Topic: Cumulative Frequency

Height (cm)	Cumulative Frequency
140-150	10
150-160	30
160-170	50
170-180	80
180-190	100

What is the frequency of students with height between 160-170 cm?

None

18.

For the following frequency distribution, what is the median?

Topic: Median of Grouped Data

Class Interval	Frequency
0-10	10
10-20	20
20-30	30
30-40	20
40-50	10

None

19.

The following table shows the distribution of the number of hours worked by employees in a week:

Topic: Mean of Grouped Data

Hours Worked	Frequency
0-10	5
10-20	10
20-30	20
30-40	25
40-50	10

What is the mean number of hours worked?

None

20.

The cumulative frequency distribution of the marks obtained by students is as follows:

Topic: Cumulative Frequency

Marks Obtained	Cumulative Frequency
0-20	10
20-40	25
40-60	50
60-80	75
80-100	100

What is the frequency of students scoring between 60-80 marks?

None

21.

For the following frequency distribution of the heights (in cm) of students:

Topic: Median of Grouped Data

Height (cm)	Frequency
140-150	10
150-160	20
160-170	30
170-180	25
180-190	15

What is the median height?

160

165

170

175

None

22.

The distribution of the weights (in kg) of 60 children is given below:

Topic: Mean of Grouped Data

Weight (kg)	Frequency
20-30	10
30-40	15
40-50	20
50-60	10
60-70	5

What is the mean weight?

None

23.

The cumulative frequency distribution of the ages of participants in a competition is as follows:

Topic: Cumulative Frequency

Age (Years)	Cumulative Frequency
10-20	20
20-30	50
30-40	80
40-50	100

What is the frequency of participants aged between 20-30 years?

None

24.

The following table shows the distribution of monthly savings (in Rs.) of 60 people:

Topic: Median of Grouped Data

Monthly Savings (Rs.)	Frequency
500-1000	10
1000-1500	15
1500-2000	20
2000-2500	10
2500-3000	5

What is the median monthly saving?

1500

1750

2000

2250

None

25.

The distribution of the daily income (in Rs.) of 50 workers is given below:

Topic: Mode of Grouped Data

Daily Income (Rs.)	Frequency
200-300	5
300-400	10
400-500	20
500-600	10
600-700	5

What is the mode of the daily income?

400

450

500

550

None

1 out of 25

Time's up

Class 10 Practice – Level 2 – Set 1 – Statistics

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