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 correlation mean in a scatter plot?

Back

Correlation refers to the degree to which two variables are related. It can be positive, negative, or no correlation.

Front

What is positive correlation?

Back

Positive correlation occurs when an increase in one variable leads to an increase in another variable.

Front

What is negative correlation?

Back

Negative correlation occurs when an increase in one variable leads to a decrease in another variable.

Front

What does no correlation mean?

Back

No correlation means there is no discernible relationship between the two variables.

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.

Front

How do you determine the slope of a line of best fit?

Back

The slope of a line of best fit indicates the rate of change between the two variables. It is calculated by the change in the y-values divided by the change in the x-values.

Front

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

Back

A negative slope indicates that as one variable increases, the other variable decreases.

Front

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

Back

A positive slope indicates that as one variable increases, the other variable also increases.

Front

How can you interpret a scatter plot with no correlation?

Back

A scatter plot with no correlation shows data points that are randomly scattered, indicating that changes in one variable do not affect the other.