Question Pool Statistics

Statistics - SAMAGRA Question Pool & Answers | Class 9 English Medium

Kerala Syllabus SAMAGRA SCERT SAMAGRA Question Pool for Class 9 English Medium Maths Statistics

BrainsPrep Logo


Qn 1.

The table shows the height of students in a class. The mean height is 145. How many students have height in between 150 and 160?

Height (cm)

No of Students

120-130

130-140

140-150

150-160

160-170

4

10

12

-

4



Download BrainsPrep

Get Free Study Materials + 1 Week Free Trial of BrainsPrep Class 9 English Medium Tuition


BrainsPrep Logo
Qn 2.

The mean of five quantities is 40 and two of them are 26 and 24.

a) find the sum of the others three quantities.

b) Find three numbers which can be the three quantities.



Download BrainsPrep

Get Free Study Materials + 1 Week Free Trial of BrainsPrep Class 9 English Medium Tuition


BrainsPrep Logo
Qn 3.

The energy club members of a school conducted a survey about the consumption of electricity in the houses of a locality. The details are shown in the following table.

Consumption (Unit)

No of Students

100-120

120-140

140-160

160-180

180-200

200-220

2

3

5

5

4

1

a) Find the total no: of Children?

b) Find the mean consumption of electricity.



Download BrainsPrep

Get Free Study Materials + 1 Week Free Trial of BrainsPrep Class 9 English Medium Tuition


BrainsPrep Logo
Qn 4.

Rajani copied a question for finding the mean of the marks of students in a class.

Marks

No of Students

0-10

10-20

20-30

30-40

40-50

4

6

7

10

3

She calculated the mean as 19. But later she identified that she had wrongly written 6 instead of 16 in second row.

a) What would be the total marks she obtained?

b) What is the actual no. of students in the class?

c) Calculate the actual mean



Download BrainsPrep

Get Free Study Materials + 1 Week Free Trial of BrainsPrep Class 9 English Medium Tuition


BrainsPrep Logo
Qn 5.

The following table shows the no. of patients registered in a govt. Hospital during the month of June

No. of Patients

No of days

100-150

150 – 200

200- 250

250 – 300

300- 350

350- 400

3

5

3

11

6

2

a) Find the no. of days having patients between 200 and 250.

b) Find the mean no: of patients in a day?



Download BrainsPrep

Get Free Study Materials + 1 Week Free Trial of BrainsPrep Class 9 English Medium Tuition


BrainsPrep Logo
Qn 6.

The following table shows the daily income of 25 families in a locality. Find the daily average income/

Daily Income (Rs)

No of families

200

250

300

425

500

550

625

2

6

7

3

4

2

1

 



Download BrainsPrep

Get Free Study Materials + 1 Week Free Trial of BrainsPrep Class 9 English Medium Tuition


BrainsPrep Logo
Qn 7.

The following table shows the quantity of milk sold by a farmer in a month.

Quantity of Milk

(Liters)

No of Days

10

11

12

13

14

7

3

10

6

4

a) Find the total quantity of milk sold?

b) Find the average quantity of milk sold in a day?



Download BrainsPrep

Get Free Study Materials + 1 Week Free Trial of BrainsPrep Class 9 English Medium Tuition


BrainsPrep Logo
Qn 8.

The members of a club are classified according to their age

Age

No of Members

19-23

23-27

27-31

31-35

35-39

39-43

6

11

8

12

7

6

a) How many members are there in the club?

b) Find the mid value of each class?

c) calculate the mean Age?



Download BrainsPrep

Get Free Study Materials + 1 Week Free Trial of BrainsPrep Class 9 English Medium Tuition


BrainsPrep Logo
Class 10 English Medium SAMAGRA Question Pool Click here
Class 10 - Malayalam Medium SAMAGRA Question Pool Click here
Class 9 English Medium SAMAGRA Question Pool Click here
Class 11 SAMAGRA Question Pool Click here
Class 12 SAMAGRA Question Pool Click here