Line of Best Fit

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, showing the trend of the data points.

Front

What type of correlation exists when one variable increases and the other variable also increases?

Back

Positive correlation.

Front

What type of correlation exists when one variable increases and the other variable decreases?

Back

Negative correlation.

Front

What does a correlation coefficient of 1 indicate?

Back

A perfect positive correlation.

Front

What does a correlation coefficient of -1 indicate?

Back

A perfect negative correlation.

Front

What does a correlation coefficient of 0 indicate?

Back

No correlation between the variables.

Front

How can you determine if a correlation is weak, moderate, or strong?

Back

By looking at the absolute value of the correlation coefficient: 0.0-0.3 is weak, 0.3-0.7 is moderate, and 0.7-1.0 is strong.

Front

If the correlation coefficient is -0.26, how would you classify it?

Back

Weak negative correlation.

Front

What is the formula for the line of best fit in slope-intercept form?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

What is the slope in the equation y = 5/3x + 375?

Back

5/3.