Line of Best Fit Flashcard

Front

What is a line of best fit used for?

Back

To make predictions.

Front

What is the equation of the line of best fit for the given data?

Back

y = -2x + 10

Front

Identify the coordinates of the outlier in a scatter plot.

Back

(9,1)

Front

Which line represents the line of best fit for the scatter plot?

Back

Line C.

Front

What is the equation of the line of best fit?

Back

y = \frac{1}{2}x + 3

Front

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

Back

The rate of change between the variables.

Front

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

Back

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

Front

What is the purpose of using a line of best fit in data analysis?

Back

To summarize the relationship between two variables and make predictions.

Front

What does an outlier indicate in a data set?

Back

A data point that differs significantly from other observations.

Front

How can you calculate the slope of a line of best fit?

Back

By using the formula \( m = \frac{y_2 - y_1}{x_2 - x_1} \) for two points on the line.