EL Association & Line of Best Fit Quick Check

Front

What is a line of best fit?

Back

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

Front

How do you determine if a line is a good line of best fit?

Back

A good line of best fit minimizes the distance between the line and all the data points, showing the overall trend.

Front

What does a positive association in a graph indicate?

Back

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

Front

What does a negative association in a graph indicate?

Back

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

Front

What does 'no association' mean in a graph?

Back

No association means there is no clear relationship between the two variables; changes in one do not affect the other.

Front

What is an outlier in a data set?

Back

An outlier is a data point that is significantly different from other data points, often lying far away from the trend.

Front

How can you identify an outlier on a scatter plot?

Back

An outlier can be identified as a point that is distant from the cluster of other points on the scatter plot.

Front

What is the purpose of using a line of best fit?

Back

The purpose is to make predictions about one variable based on the value of another variable.

Front

What does it mean if the line of best fit has a steep slope?

Back

A steep slope indicates a strong relationship between the variables, meaning a small change in one variable results in a large change in the other.

Front

What does it mean if the line of best fit is horizontal?

Back

A horizontal line of best fit indicates no relationship between the variables; changes in one variable do not affect the other.