Line of Best Fit Review

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 overall trend of the data.

Front

What does it mean if a line does not go through the middle of the data set?

Back

If a line does not go through the middle of the data set, it may not accurately represent the trend of the data, indicating it is not a line of best fit.

Front

How can you identify a linear relationship in a scatter plot?

Back

A linear relationship can be identified in a scatter plot if the points roughly form a straight line.

Front

What is the equation of a line of best fit?

Back

The equation of a line of best fit can be expressed in the form y = mx + b, where m is the slope and b is the y-intercept.

Front

What does a negative association in a graph indicate?

Back

A negative association indicates that as one variable increases, the other variable tends to decrease.

Front

What is the slope in the equation y = -2x + 10?

Back

The slope is -2, which means for every 1 unit increase in x, y decreases by 2 units.

Front

What is the y-intercept in the equation y = -2x + 10?

Back

The y-intercept is 10, which is the value of y when x is 0.

Front

If Joe worked 30 hours and earned $600, what is his hourly wage?

Back

His hourly wage is $20 per hour, calculated by dividing $600 by 30 hours.

Front

What does it mean for a graph to have no association?

Back

No association means there is no discernible pattern or relationship between the two variables in the graph.

Front

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

Back

The line of best fit can be determined by visually estimating the line that minimizes the distance of all points from the line.