Scatter plots

Like a line graph Has x and y axis Plot individual points

Different from a line graph Don’t connect the points

Scatter plots can show: 1. A positive correlation (relationship) between variables As x increases y increases. Example: As armspan increases, height increases.

The correlation can be strong or weak Weak: points further apart Strong: points close together

Scatter plots can show: 2. A negative correlation As x increases, y decreases Example: GPA increases as hours spent watching TV decreases.

Negative correlation can also be strong or weak

Scatter plots can show: 3. No correlation There is no relationship between x and y. Example: The number of hot dogs eaten in a week is not related to the amount of rainfall.

Line of best fit Shows the trend of the data Falls in middle of the plotted points Does not have to include 0! May ignore outliers