Page 55 - Year 9

Collecting and analysing data Sets 1 and 2 Maths: 3 of 7 Collecting and analysing data Sets 1 and 2 Maths: 4 of 7

Keyword Definition

Population The whole group being studied

Sample A selection taken from the
population
Bias A built in error that makes values
incorrect

Cumulative The total of frequencies so far in a
frequency distribution

Quartiles Divides the data into quarters

Frequency Frequency ÷ class width
density