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A frequency table shows each value, or each interval, and how often it occurs. It saves time because you do not need to write every result out in a long list.
The frequency is how many times something happens, and the total frequency is the sum of all the frequencies. From a frequency table you can find the mean, median, and mode.
If the table uses exact values, you can calculate the exact mean. If the table uses grouped intervals, you use midpoints, so the mean is only an estimate.
Question 1
3 marksThe table shows information about the number of points scored in a game.
| Points | Frequency |
|---|---|
| 0 | 9 |
| 1 | 11 |
| 2 | 18 |
| 3 | 7 |
| 4 | 4 |
| 5 | 1 |
In a frequency table, what should you add to find the total number of items?
Revision notes for Edexcel GCSE Maths Averages from Frequency Tables. Open the guide for explanations and worked examples. Written against the Edexcel GCSE Maths (1MA1) specification, so the content matches what's examinable rather than general Maths background.
1 of 5
The values 000, 111, 222 and 333 have frequencies 333, 555, 444 and 222. How many values were recorded altogether?
