Two Variable Statistics Practice

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional grid.

Front

What does the line of best fit represent in a scatter plot?

Back

The line of best fit represents the trend of the data points in a scatter plot, indicating the general direction of the relationship between the two variables.

Front

Define positive correlation.

Back

Positive correlation occurs when an increase in one variable leads to an increase in another variable.

Front

Define negative correlation.

Back

Negative correlation occurs when an increase in one variable leads to a decrease in another variable.

Front

What does 'no correlation' mean?

Back

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

Front

What is a linear relationship?

Back

A linear relationship is a relationship between two variables that can be represented by a straight line on a graph.

Front

What is a nonlinear relationship?

Back

A nonlinear relationship is a relationship between two variables that does not form a straight line when graphed.

Front

How can you identify a positive linear association in a scatter plot?

Back

A positive linear association is identified when the data points slope upwards from left to right.

Front

How can you identify a negative linear association in a scatter plot?

Back

A negative linear association is identified when the data points slope downwards from left to right.

Front

What is the purpose of analyzing two-variable statistics?

Back

The purpose is to understand the relationship between two variables and how they influence each other.