Scatterplots and Linear Regression

Front

What is a scatterplot?

Back

A scatterplot is a type of graph that shows the relationship between two sets of data by displaying points on a grid.

Front

What does the line of best fit represent?

Back

The line of best fit shows the general direction or trend of the data points in a scatterplot.

Front

What is linear regression?

Back

Linear regression is a method used to find the line of best fit for a set of data points.

Front

What does it mean if a scatterplot has no relationship?

Back

It means that there is no clear pattern or trend between the two sets of data.

Front

What is the equation of a line?

Back

The equation of a line is a mathematical statement that describes the relationship between x and y coordinates, usually in the form y = mx + b.

Front

What does 'm' represent in the line equation y = mx + b?

Back

In the equation, 'm' represents the slope of the line, which shows how steep the line is.

Front

What does 'b' represent in the line equation y = mx + b?

Back

In the equation, 'b' represents the y-intercept, which is the point where the line crosses the y-axis.

Front

How can you predict height from foot length using a scatterplot?

Back

You can use the line of best fit to estimate a person's height based on their foot length.

Front

What is a data point in a scatterplot?

Back

A data point is a single value that represents an observation in the scatterplot, shown as a dot.

Front

What does a positive slope indicate in a scatterplot?

Back

A positive slope indicates that as one variable increases, the other variable also increases.