Understanding Scatterplots and Correlations Practice

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 line of best fit represent in a scatterplot?

Back

A line of best fit is a straight line that best represents the data on a scatterplot, indicating the trend of the data points.

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 are the types of correlation?

Back

There are three types of correlation: positive correlation, negative correlation, and no correlation.

Front

What does a positive correlation indicate?

Back

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

Front

What does a negative correlation indicate?

Back

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

Front

What is the range in a set of data?

Back

The range is the difference between the highest and lowest values in a data set.

Front

What is the domain in a function?

Back

The domain is the set of all possible input values (x-values) for a function.

Front

How do you find the slope of a line in a scatterplot?

Back

The slope of a line is calculated by taking the change in y (rise) divided by the change in x (run) between two points on the line.

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.