Scatterplot Review

Front

What is a scatterplot?

Back

A scatterplot 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 trend in a scatterplot indicate?

Back

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

Front

What does a negative trend in a scatterplot indicate?

Back

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

Front

What does no correlation mean in a scatterplot?

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 nonlinear association?

Back

A nonlinear association occurs when the relationship between two variables cannot be accurately represented by a straight line.

Front

How do you identify a positive correlation in a scatterplot?

Back

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

Front

How do you identify a negative correlation in a scatterplot?

Back

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

Front

What is the purpose of a trend line in a scatterplot?

Back

A trend line helps to summarize the relationship between the variables and can be used to make predictions.

Front

What does it mean if a scatterplot has a cluster of points?

Back

A cluster of points indicates that there is a concentration of data points in that area, suggesting a possible relationship.

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.