Line of Best Fit

Front

What is the line of best fit?

Back

A line that best represents the data on a scatter plot, showing the trend of the data points.

Front

What does a scatter plot show?

Back

A scatter plot displays the relationship between two quantitative variables.

Front

What does a strong negative correlation (r = -0.89) indicate?

Back

It indicates that as one variable increases, the other variable tends to decrease.

Front

What is correlation?

Back

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

Front

How do you determine the line of best fit on a scatter plot?

Back

By visually assessing the data points and drawing a line that minimizes the distance to all points.

Front

What does a positive correlation mean?

Back

It means that as one variable increases, the other variable also tends to increase.

Front

What is the purpose of the line of best fit?

Back

To predict values and understand the relationship between variables.

Front

What does a weak positive correlation look like?

Back

A scatter plot where points are loosely clustered around an upward sloping line.

Front

What is the range of correlation coefficients?

Back

The range is from -1 to 1, where -1 indicates a perfect negative correlation, 1 indicates a perfect positive correlation, and 0 indicates no correlation.

Front

What does the slope of the line of best fit represent?

Back

The slope indicates the rate of change between the two variables.