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 strong positive correlation indicate in a scatterplot?

Back

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

Front

What does a weak negative correlation indicate in a scatterplot?

Back

A weak negative correlation indicates that as one variable increases, the other variable tends to decrease, but the relationship is not strong.

Front

What is the correlation coefficient?

Back

The correlation coefficient is a numerical measure of the strength and direction of a relationship between two variables, ranging from -1 to 1.

Front

What does r=1 signify?

Back

r=1 signifies a perfect positive correlation, meaning that the two variables move in the same direction perfectly.

Front

What does r=-1 signify?

Back

r=-1 signifies a perfect negative correlation, meaning that the two variables move in opposite directions perfectly.

Front

What does r=0 signify?

Back

r=0 signifies no correlation, meaning there is no relationship between the two variables.

Front

What is a dependent variable?

Back

A dependent variable is the variable that is being tested and measured in an experiment, often represented on the y-axis of a graph.

Front

What is an independent variable?

Back

An independent variable is the variable that is changed or controlled in an experiment to test its effects on the dependent variable, often represented on the x-axis of a graph.

Front

What is an example of no correlation?

Back

An example of no correlation is the relationship between the number of siblings a person has and their weight.