Measures of Centre (Junior Cert Mathematics): Flashcards

Total amount shared equally among all numbers

Add all numbers, then divide by how many numbers there are

$\text{Mean} = \frac{\text{Total of all numbers}}{\text{Number of numbers}}$

The middle number when arranged from smallest to largest

Average the two middle numbers

Hey diddle diddle, the median's the middle

The number that appears most often

Yes, or it can have no mode at all

Uses all the data

Easily affected by outliers

Not affected by outliers

Might not exist if no number repeats

To avoid outliers and find the middle value