Everything Maths Grade 10

12.A group of 20 learners count the number of playing cards they each have. This is the data they collect:

12 1 5 4 17

14 7 5 1 3

9 4 12 17 5

19 1 19 7 15

Count the number of learners who have from 0 up to 3 playing cards. In other words, how many learners

have playing cards in the following range: 0number of playing cards3? It may be helpful for you

to draw a histogram in order to answer the question.

13.A group of 20 learners count the number of coins they each have. This is the data they collect:

17 11 1 15 14

3 4 18 5 14

18 19 4 18 15

16 13 20 8 18

Count the number of learners who have from 4 up to 7 coins. In other words, how many learners have

coins in the following range: 4number of coins7? It may be helpful for you to draw a histogram in

order to answer the question.

14.A group of 20 learners count the number of playing cards they each have. The learners draw a histogram
describing the data they collected. However, they have made a mistake in drawing the histogram.

1

2

3

4

5

6

7

8

0-3

A

4-7

B

8-11

C

12-15

D

16-19

E

number of playing cards

y

The data set below shows the correct information for the number of playing cards the learners have. Each

value represents the number of playing cards for one learner.

f18; 10; 3; 2; 19; 15; 2; 13; 11; 14; 10; 3; 5; 9; 4; 18; 11; 18; 16; 5g

Help them figure out whichcolumnin the histogram isincorrect.

15.A group of 10 learners count the number of sweets they each have. The learners draw a histogram
describing the data they collected. However, they have made a mistake in drawing the histogram.

Chapter 10. Statistics 383