# Interpreting column graphs

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### Probability and Chance in Mathematics - Interpreting column graphs

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### Probability and Chance in Mathematics - Interpreting column graphs

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Interpreting column graphs

* Column graphs created from frequency tables can show us many things.

* 'Reading a graph' involves looking at its values and its shape to
interpret its meaning.

* Look at the title.

* Look at the labels and values on the axes.

* Be careful if things are not clear or simple.

* Let us review again the family data from Heather and her friends.

FAMILY SIZE
FREQUENCY
NUMBER OF PEOPLE

1
0
1

2
2
4

3
5
15

4
8
32

5
4
20

6
0
0

7
1
7

total = 20
total = 78

Do you agree with the following statements?

STATEMENTS
CORRECT RESPONSE

Q1. There are no one-person families.
T

Q2. The smallest family size is 3.
F

Q3. The largest family is six persons.
F

Q4. The most common family size is 4.
T

Q5. A quarter of the families have more than 4 people.
T

Q6. There are 7 families with less than 4 people.
T

Q7. There are 16 families with less than 5 people.
F

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