Scatter plots and Trend lines

Front

What is a scatter plot?

Back

A graph that shows the relationship of two data sets.

Front

What does a trend line represent in a scatter plot?

Back

A trend line represents the general direction or pattern of the data points in a scatter plot.

Front

How can you use a trend line to make predictions?

Back

You can extend the trend line to estimate values for data points not directly represented in the scatter plot.

Front

What is the purpose of the line of best fit?

Back

To make predictions based on the data represented in the scatter plot.

Front

What does a positive correlation indicate in a scatter plot?

Back

As one variable increases, the other variable also tends to increase.

Front

What does a negative correlation indicate in a scatter plot?

Back

As one variable increases, the other variable tends to decrease.

Front

What does no correlation mean in a scatter plot?

Back

There is no apparent relationship between the two variables.

Front

How do you determine the type of correlation from a scatter plot?

Back

By observing the direction of the trend of the data points.

Front

What is the first step in creating a scatter plot?

Back

Collect and organize the data into two variables.

Front

What is the significance of outliers in a scatter plot?

Back

Outliers can skew the results and affect the accuracy of the trend line.