Range and Variability (Leaving Cert Mathematics): Flashcards

Highest value - Lowest value

Spread/variability of data

Data points are more scattered

Data points closer together, more consistent

Only uses extreme values, ignores data in between

Value one-quarter through the data

Value halfway through the data

Value three-quarters through the data

$Q_3 - Q_1$

Not affected by extreme values

Middle 50%

Arrange data in ascending order