12.3- Line of Best Fit - Day 1

Front

What is a line of best fit?

Back

A line drawn in a scatter plot that best represents the data points, showing the relationship between two variables.

Front

What is the purpose of a line of best fit?

Back

To make predictions about one variable based on the value of another variable.

Front

How do you determine if a line is a good line of best fit?

Back

By checking if the line closely follows the trend of the data points and minimizes the distance from the points to the line.

Front

What does a scatter plot show?

Back

A scatter plot displays the relationship between two quantitative variables, with points representing individual data values.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.

Front

What does it mean if the line of best fit has a positive slope?

Back

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

Front

What does it mean if the line of best fit has a negative slope?

Back

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

Front

How can you use a line of best fit to make predictions?

Back

By extending the line to estimate values of the dependent variable for given values of the independent variable.

Front

What is linear regression?

Back

A statistical method used to find the line of best fit by minimizing the sum of the squares of the vertical distances of the points from the line.

Front

What is an outlier in a scatter plot?

Back

An outlier is a data point that is significantly different from other points, often lying far away from the line of best fit.