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### Course: High school statistics>Unit 4

Lesson 2: Analyzing trend lines in scatterplots

# Interpreting slope of regression line

We look at an example scatter plot showing the relationship between hours studying and test scores. We interpret scatter plots, investigate the relationship between variables, interpret the slope of a trend line, and make predictions based on the trend line's slope and intercept.

## Want to join the conversation?

• how do you find the slope if they do not give it to you?
• How do you interpret the slope when it's a fraction??
• So, first things first we need to know what slope is. Slope is the change in y/change in x; the same thing as rise/run.
Here is an example:
Lets say you have a equation that says y=1/4x+2. Its pretty simple from there. So, we know in the slope intercept formula (y=mx+b) we know that m=slope and b=y intercept. So for the equation I gave you m=1/4 and b=2. So, from the y-intercept (which is 2) you move 4 spaces to the right and 1 space up.

Hope that helps!:)
• What does slope mean?