Revision (Grade 11 NSC Matric Mathematics): Flashcards

Centre or typical value of a dataset

Sum of all values ÷ number of values

$\bar{x} = \frac{\sum_{i=1}^{n} x_i}{n}$

Middle value when data is ordered smallest to largest

Average of the two middle values

Maximum value - Minimum value

Spread of the middle 50% of the data

$Q_3 - Q_1$

Minimum, $Q_1$, Median, $Q_3$, Maximum

Inter-quartile range (from $Q_1$ to $Q_3$)