Interpreting Scatter Plots and Calculating Rate of Change

This video tutorial explains how to interpret scatter plots by calculating the rate of change. It covers the concept of slope, how to choose points on a graph, and common mistakes. The lesson includes examples of scatter plots showing the relationship between homework completion and test scores, as well as the impact of TV watching on test scores. The video concludes with a summary of the key points learned.

What is the formula used to calculate the slope of a line in a scatter plot?

• Run over rise

• Rise over run

• Difference of x and y

• Sum of x and y

When determining the slope of a line of best fit, do the points chosen need to be actual data points?

• Only if the line passes through the origin

• Only if the data points are evenly spaced

• No, any points on the line can be used

• Yes, they must be actual data points

What does a positive slope in a scatter plot indicate about the relationship between two variables?

• As one variable increases, the other decreases

• The variables have a constant difference

• The variables are unrelated

• As one variable increases, the other also increases

In the context of homework and test scores, what does a slope of 10 indicate?

• Test scores decrease by 10 points per homework assignment

• Test scores increase by 10 points per homework assignment

• Homework assignments increase by 10 per test score

• Homework assignments decrease by 10 per test score

What does a negative slope in the context of TV watching and test scores suggest?

• Test scores increase with more TV watching

• Test scores decrease with more TV watching

• TV watching has no effect on test scores

• Test scores remain constant regardless of TV watching