Grouped Frequency Tables (Edexcel GCSE Maths): Quizzes

Ranges or classes of values

Continuous data or large datasets

No value in more than one class

$5 < h \leq 10$

$\frac{\text{Lower + Upper}}{2}$

$7.5$

Class with highest frequency

No, only the modal class

$\frac{n+1}{2}$ position

Class containing middle value(s)

$\frac{\sum(f \times \text{mid-interval})}{\sum f}$

Using mid-interval for all data points