Cumulative frequency and box plot practice questions click here for questions. The corbettmaths practice questions on cumulative frequency graphs. Use the graph to estimate the number of oak trees that are more than 600 feet tall.
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A high value for the interquartile range shows that the data is spread out. It shows you how to find the median, lower quartile, upper quartile and interquartile range, iqr. Cumulative frequency graphs can then be used to estimate the median of a set of data.
In this section we also look at the idea of quartiles, the interquartile range and the semiinterquartile range.
It shows you how to find the median, lower quartile, upper quartile and interquartile range, iqr.more A low value for the interquartile range means the data is closer together or more consistent. Check that pupils understand the difference between measure of. Here we will learn about cumulative frequency, including how to draw a cumulative frequency graph, and how to read and interpret a cumulative frequency graph including box plots.
Cumulative frequency graph below shows the marks, out of 100, that a class scored in a maths test. Give pupils the opportunity to verbalise what the median and interquartile range tell us, ensuring that the context is carefully referred to.
