Cumulative Frequency Diagram Median. 70 Cumulative frequency 5 13 72 90 117 120 a On the grid below draw a cumulative frequency diagram to show these results. Videos worksheets 5-a-day and much more.
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When dealing with a cumulative frequency curve n. For example there are 7 numbers in the example above so replace n by 7 and the median is the 7 12 th value 4th value. Cumulative frequency graphs can then be used to estimate the median of a set of data.
The following cumulative frequency graph shows the distribution of marks scored by a class of 40 students in a test.
To find the median value draw a line across from the. This can be achieved by first finding the median and. Finding the median from a frequency table. Find the median values.
