Grouped Frequency Distributions (Leaving Cert Mathematics): Quizzes

Organizing data into intervals

Non-overlapping ranges

Number of data points in an interval

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

Running total of frequencies

$\frac{\text{Frequency}}{\text{Total}}$

Between 5 and 10

$\frac{\text{Range}}{\text{No. of Intervals}}$

18

0.30