Topic 1 Grouping Data

Question 1

What is important to remember when grouping data

Answer 1

Classes don’t overlap and there are no gaps between classes if data is continuous- use inequalities

Question 2

Pros of grouping data

Answer 2

Easy to read and process
Can see patterns and and compare different classes

Question 3

Cons of grouping data

Answer 3

Lose some of the accuracy because you don’t know the exact data values anymore
This means that calculations such as mean are on,y estimates and diagrams can be misleading