Scatterplots Correlation and Lines of Best Fit

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Front

What does correlation in a scatterplot indicate?

Back

Correlation indicates the strength and direction of a linear relationship between two variables.

Front

What are the types of correlation that can be observed in scatterplots?

Back

The types of correlation are positive correlation, negative correlation, and no correlation.

Front

What does a positive correlation look like in a scatterplot?

Back

In a positive correlation, as one variable increases, the other variable also increases, resulting in an upward trend.

Front

What does a negative correlation look like in a scatterplot?

Back

In a negative correlation, as one variable increases, the other variable decreases, resulting in a downward trend.

Front

What does no correlation mean in a scatterplot?

Back

No correlation means there is no discernible relationship between the two variables, and the points are scattered randomly.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatterplot, showing the general direction of the relationship between the variables.

Front

How do you determine the slope of a line of best fit?

Back

The slope of a line of best fit is determined by the change in the y-values divided by the change in the x-values between two points on the line.

Front

What does a steep slope indicate in a line of best fit?

Back

A steep slope indicates a strong relationship between the variables, meaning a small change in one variable results in a large change in the other.

Front

What does a shallow slope indicate in a line of best fit?

Back

A shallow slope indicates a weak relationship between the variables, meaning changes in one variable result in smaller changes in the other.