Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an observation in the dataset.

Front

What does a positive association in a scatterplot indicate?

Back

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

Front

What does a negative association in a scatterplot indicate?

Back

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

Front

What does no association mean in a scatterplot?

Back

No association means that there is no discernible pattern between the two variables; changes in one variable do not predict changes in the other.

Front

What is the response variable in a scatterplot?

Back

The response variable is the variable that is being measured or observed in response to changes in another variable.

Front

What is the explanatory variable in a scatterplot?

Back

The explanatory variable is the variable that is manipulated or changed to observe its effect on the response variable.

Front

How do you identify the slope of a line in a scatterplot?

Back

The slope of a line in a scatterplot indicates the rate of change of the response variable with respect to the explanatory variable.

Front

What is slope-intercept form of a linear equation?

Back

The slope-intercept form is given by the equation y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the y-intercept from a scatterplot?

Back

The y-intercept is the point where the line crosses the y-axis, indicating the value of y when x is zero.

Front

What does a slope of 1/2 indicate in a scatterplot?

Back

A slope of 1/2 indicates that for every 1 unit increase in the x variable, the y variable increases by 1/2 unit.