Scatterplots and Trendlines

Front

What is a line of best fit used for?

Back

To make predictions.

Front

Is this relation a function?

Back

Function.

Front

How do you determine if a scatter plot shows a positive correlation?

Back

If the points tend to rise from left to right.

Front

What does a negative correlation in a scatter plot indicate?

Back

As one variable increases, the other variable decreases.

Front

What is the purpose of a scatter plot?

Back

To display the relationship between two quantitative variables.

Front

What does it mean if a scatter plot has no correlation?

Back

There is no apparent relationship between the two variables.

Front

How can you estimate values using a line of best fit?

Back

By finding the corresponding y-value for a given x-value on the line.

Front

What is the first step in creating a scatter plot?

Back

Collect and organize the data.

Front

What does the slope of the line of best fit represent?

Back

The rate of change between the two variables.

Front

What is an outlier in a scatter plot?

Back

A data point that is significantly different from the others.