Collecting and Organising Data

A graph that compares values across different categories using separate bars.

A systematic influence that causes results to be unfair or unrepresentative.

A range of values used in a grouped frequency table.

A variable that can take any value within a range and is usually measured.

A factor kept constant during an experiment.

Selecting individuals who are easiest to reach.

The running total of frequencies up to and including a given value or class.

A table showing frequencies and their running totals.

Facts, observations, or measurements collected for analysis.

The process of gathering information for analysis.