Scatterplots and Trend Lines 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 plane.

Front

What does a positive correlation indicate in a scatterplot?

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 scatterplot?

Back

A negative correlation 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 that there is no discernible relationship between the two variables; changes in one variable do not predict changes in the other.

Front

How can you identify a positive correlation in a scatterplot?

Back

A positive correlation can be identified by a pattern where data points slope upwards from left to right.

Front

How can you identify a negative correlation in a scatterplot?

Back

A negative correlation can be identified by a pattern where data points slope downwards from left to right.

Front

What is the slope of a line in a scatterplot?

Back

The slope of a line in a scatterplot represents the rate of change between the two variables; it indicates how much one variable changes for a unit change in the other variable.

Front

What does it mean if the slope of a line is positive?

Back

If the slope of a line is positive, it means that as one variable increases, the other variable also increases.

Front

What does it mean if the slope of a line is negative?

Back

If the slope of a line is negative, it means that as one variable increases, the other variable decreases.

Front

What is the line of best fit in a scatterplot?

Back

The line of best fit is a straight line that best represents the data on a scatterplot, showing the overall trend of the data points.