Frequency Distributions (Leaving Cert Mathematics): Quizzes

How often each value appears

The variable (different values)

Value appearing most frequently

The value itself, not 9

The middle value in order

$\frac{1}{2}(n + 1)$

$\frac{\Sigma fx}{\Sigma f}$

Sum of (frequency × variable)

Sum of all frequencies

5.5

Forgetting to multiply by frequency

4