Everything Maths Grade 10

1

2

3

4

5

6

0-2 3-5 6-8 9-11 12-15

number of stones

y

Count the number of stones in the following range: 0number of stones 2

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

14 9 11 8 13 2 3 4 16 17

9 19 10 14 4 16 16 11 2 17

Count the number of learners who have from 12 up to 15 playing cards. In other words, how many

learners have playing cards in the following range: 12number of playing cards15? It may be

helpful for you to draw a histogram in order to answer the question.

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

16 6 11 19 20 17 13 1 5 12

5 2 16 11 16 6 10 13 6 17

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

stones in the following range: 4number of stones7? It may be helpful for you to draw a histogram

in order to answer the question.

5.A group of 20 learners count the number of stones 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

0-3

A

4-7

B

8-11

C

12-15

D

16-19

E

number of stones

y

The data set below shows the correct information for the number of stones the learners have. Each value

represents the number of stones for one learner.

f4; 12; 15; 14; 18; 12; 17; 15; 1; 6; 6; 12; 6; 8; 6; 8; 17; 19; 16; 8g

Help them figure out whichcolumnin the histogram isincorrect.

Chapter 10. Statistics 367