graphs

Question 1

bar chart

Answer 1

Used for category/ nominal data.
A diagram of columns, the heights of which indicate frequencies, so data on the x axis is discrete meaning it falls into categories.
There should be a gap between each bar, showing that the data is discrete or nominal data.

Question 2

histograms

Answer 2

Used for continuous data.
No gaps between bars.

Question 3

scattergrams

Answer 3

Used for correlations.
Show a relationship.