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 indicate in a scatter plot?

Back

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

Front

What does a negative correlation indicate in a scatter plot?

Back

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

Front

What does no correlation mean in a scatter plot?

Back

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

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 general direction of the data.

Front

How can you identify a positive correlation in a scatter plot?

Back

A positive correlation can be identified when the data points slope upwards from left to right.

Front

How can you identify a negative correlation in a scatter plot?

Back

A negative correlation can be identified when the data points slope downwards from left to right.

Front

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

Back

If the line of best fit is horizontal, it indicates no correlation between the variables.

Front

What is an example of a negative correlation?

Back

An example of a negative correlation is the relationship between the age of a car and its value; as the car gets older, its value decreases.

Front

What is an example of a positive correlation?

Back

An example of a positive correlation is the relationship between the number of books read and final grades; generally, more books read leads to higher grades.