Chapter 2 Review #2

Front

What is a negative correlation?

Back

A negative correlation is a relationship between two variables in which one variable increases as the other decreases.

Front

What is a positive correlation?

Back

A positive correlation is a relationship between two variables in which both variables increase or decrease together.

Front

What is a scatter plot?

Back

A scatter plot is a graph that displays values for typically two variables for a set of data, showing the relationship between them.

Front

What does a line of best fit represent?

Back

A line of best fit is a straight line that best represents the data on a scatter plot, used to make predictions.

Front

How do you interpret a scatter plot with a positive correlation?

Back

In a scatter plot with a positive correlation, as one variable increases, the other variable also tends to increase.

Front

How do you interpret a scatter plot with a negative correlation?

Back

In a scatter plot with a negative correlation, as one variable increases, the other variable tends to decrease.

Front

What is relative frequency?

Back

Relative frequency is the ratio of the number of times an event occurs to the total number of trials or observations.

Front

What is the purpose of using a scatter plot?

Back

The purpose of using a scatter plot is to visually display the relationship between two quantitative variables.

Front

What is the significance of the slope in a line of best fit?

Back

The slope of a line of best fit indicates the direction and steepness of the relationship between the two variables.

Front

What does it mean if there is no correlation between two variables?

Back

If there is no correlation, it means that changes in one variable do not predict changes in the other variable.