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 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 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 overall trend.

Front

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

Back

A positive relationship is identified when the data points slope upwards from left to right.

Front

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

Back

A negative relationship is identified when the data points slope downwards from left to right.

Front

What is an example of a positive correlation?

Back

An example of a positive correlation is the relationship between hours studied and test scores; generally, more study hours lead to higher scores.

Front

What is an example of a negative correlation?

Back

An example of a negative correlation is the relationship between the amount of time spent watching TV and grades; more TV time often leads to lower grades.

Front

What is an example of no correlation?

Back

An example of no correlation is the relationship between shoe size and intelligence; there is no relationship between these two variables.