Mean from a Bar Chart

Statistics

A survey was carried out to find the average number of children per family living in a village. The results are shown in the bar chart. Use this diagram to make up a frequency table and hence workout the averagenumber of childrenper family.

Mean from a bar chart (via a frequency table)

0 1 2 3 4 5 6

3 4 5 6 7 8 9

The marks obtained by pupils in a class test are shown in the bar chart. Make a frequency table and use it to find the average mark

Mean from a bar chart (via a frequency table)

The rainfall over a period of time was observed and the

results are shown in the bar chart.

Use the diagram to work out the average

rainfall over the time period.

0 0.25 0.5 0.75 1.0 1.25

Mean from a bar chart (via a frequency table)

Pupils were asked to count the number of hours they spent watching television in a weekend. The results are recorded in the bar chart. Work out the mean number of hours spent watching television.

Mean from a bar chart (via a frequency table)

3 4 5 6 7 8 9