Exam-Style Question on Statistics
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 530. This question is similar to one that appeared on a GCSE Higher paper in 2019. The use of a calculator is allowed.
The table shows information about the heights of 85 stalagmites.
|Height (\(h\) cm)||Frequency|
|\(10\lt h \le 15\)||9|
|\(15\lt h \le 20\)||13|
|\(20\lt h \le 25\)||18|
|\(25\lt h \le 30\)||22|
|\(30\lt h \le 35\)||15|
|\(35\lt h \le 40\)||8|
(a) Find the class interval that contains the median.
(b) On the grid below, draw a frequency polygon for the information in the table.
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