Unit 3: Scatter Plot Review

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 axis.

Front

What does a trend line represent in a scatter plot?

Back

A trend line represents the general direction or pattern of the data points in a scatter plot, indicating the relationship between the two variables.

Front

How can you use a trend line to make predictions?

Back

You can use a trend line to predict values by extending the line and finding where it intersects with the value of interest on the axis.

Front

What is correlation in statistics?

Back

Correlation is a statistical measure that describes the strength and direction of a relationship between two variables.

Front

What is a positive correlation?

Back

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

Front

What is a negative correlation?

Back

A negative correlation means that as one variable increases, the other variable tends to decrease.

Front

What does a correlation coefficient of 1 indicate?

Back

A correlation coefficient of 1 indicates a perfect positive correlation between two variables.

Front

What does a correlation coefficient of -1 indicate?

Back

A correlation coefficient of -1 indicates a perfect negative correlation between two variables.

Front

What does a correlation coefficient of 0 indicate?

Back

A correlation coefficient of 0 indicates no correlation between the two variables.

Front

How do you determine the line of best fit?

Back

The line of best fit is determined by minimizing the distance between the data points and the line itself, often using methods like least squares.