Presentation of quantitative data

Question 1

What are bar charts?

Answer 1

Represents data visually.
Display difference in mean values so it’s easily seen.
Used when data is is divided into categories, otherwise known discrete data.
Separate on a bar chart to denote that we are dealing with separate conditions.

Question 2

What are histograms?

Answer 2

The bars touch each other, which shows that x-axis data is continuous.
x-axis - made up of equal-sized intervals of single category eg, percentage scores.
y-axis - represents the frequency within each interval.

Question 3

What are scattergrams?

Answer 3

Don’t depict differences but association between co-variables.