scatterplots basics 1

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 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 is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatterplot, showing the general direction of the data points.

Front

What does it mean if there is no correlation in a scatterplot?

Back

No correlation means that there is no apparent relationship between the two variables; changes in one variable do not predict changes in the other.

Front

How can you identify a linear relationship in a scatterplot?

Back

A linear relationship can be identified if the data points roughly form a straight line.

Front

What is the purpose of using a scatterplot?

Back

The purpose of using a scatterplot is to visually display the relationship between two variables and to identify patterns or trends.

Front

What is an example of a positive correlation?

Back

An example of a positive correlation is the relationship between hours studied and test scores; generally, more study hours lead to higher scores.

Front

What is an example of a negative correlation?

Back

An example of a negative correlation is the relationship between temperature and the number of people wearing jackets; as temperature increases, the number of people wearing jackets decreases.

Front

What does the slope of the line of best fit represent?

Back

The slope of the line of best fit represents the rate of change between the two variables.