Interpreting and making predictions with Scatter Plots

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does a positive correlation in a scatter plot indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative correlation in a scatter plot indicate?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, showing the overall trend of the data.

Front

How can you determine if there is no correlation in a scatter plot?

Back

No correlation is indicated when the data points do not show any discernible pattern or trend.

Front

What is the purpose of making predictions using a scatter plot?

Back

The purpose is to estimate the value of one variable based on the value of another variable using the trend shown in the scatter plot.

Front

What does it mean if a scatter plot shows a nonlinear association?

Back

A nonlinear association means that the relationship between the two variables cannot be accurately represented by a straight line.

Front

How do you interpret the slope of the line of best fit?

Back

The slope indicates the rate of change between the two variables; a steeper slope means a stronger relationship.

Front

What is an example of a positive relationship in a scatter plot?

Back

An example is the relationship between hours studied and test scores, where more study time generally leads to higher scores.

Front

What is an example of a negative relationship in a scatter plot?

Back

An example is the relationship between the amount of gas in a tank and the distance a car can travel, where less gas means less distance.