Scatterplots and Line of Best Fit (Graded)

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two variables by displaying data points on a two-dimensional axis.

Front

What does the line of best fit represent in a scatterplot?

Back

The line of best fit represents the trend of the data points in a scatterplot, indicating the general direction of the relationship between the two 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-value divided by the change in the x-value 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.

Front

What does a negative slope indicate in a scatterplot?

Back

A negative slope indicates an inverse relationship between the two variables, meaning as one variable increases, the other decreases.

Front

What does a positive slope indicate in a scatterplot?

Back

A positive slope indicates a direct relationship between the two variables, meaning as one variable increases, the other also increases.

Front

What is correlation in statistics?

Back

Correlation is a statistical measure that describes the extent to which two variables change together.

Front

What are the types of correlation?

Back

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

Front

What does 'no correlation' mean?

Back

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

Front

How can you predict values using the line of best fit?

Back

You can predict values by substituting the x-value into the equation of the line of best fit to find the corresponding y-value.