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 predict changes in the other.

Front

What is a trend line in a scatter plot?

Back

A trend line is a straight line that best represents the data points in a scatter plot, showing the general direction of the data.

Front

How can you use a trend line to make predictions?

Back

You can use a trend line to estimate the value of one variable based on the value of another variable by finding the corresponding point on the line.

Front

What is the purpose of analyzing scatter plots?

Back

The purpose is to identify relationships, trends, and patterns between two variables.

Front

What does it mean if a scatter plot shows a nonlinear association?

Back

A nonlinear association means that the relationship between the variables cannot be accurately represented by a straight line.

Front

How do you interpret the slope of a trend line in a scatter plot?

Back

The slope indicates the rate of change between the two variables; a steeper slope means a stronger relationship.

Front

What is the significance of outliers in a scatter plot?

Back

Outliers are data points that differ significantly from other observations; they can affect the overall trend and interpretation of the data.