Calculating the mean
I can calculate the mean from data presented in a frequency table and different graphs.
Calculating the mean
I can calculate the mean from data presented in a frequency table and different graphs.
Lesson details
Key learning points
- The mean can be calculated from a line graph.
- The mean can be calculated from an ungrouped frequency table.
- The mean can be calculated from a bar chart.
Common misconception
Pupils may divide by how many groups/bars there are, instead of the total frequency.
By reminding students frequently that averages need to give a 'typical' value of the data set, ask them to sense check their mean value.
Keywords
Frequency - The frequency is the number of times an event occurs; or the number of individuals (people, animals etc.) with some specific property.
Data - Data are a collection of information.
Mean - The sum of the values divided by the number of values. It is a measure of central tendency representing the average of the values.
Measure of central tendency - A summary measure that attempts to describe a whole set of data with a single value that represents the middle of the distribution.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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