Mean, Mode and Median of a Frequency Distribution (Leaving Cert Mathematics): Quizzes

$50$%

Value with highest frequency

Midpoint of each class

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

Lower boundary of median class

Cumulative frequency before median class

Where cumulative freq reaches $\frac{N}{2}$

Class with highest frequency

Frequency of class before modal class

Class width

$\frac{\sum (f \times x)}{\sum f}$

Frequency of median class