12.3- Line of Best Fit - Day 1

Front

What is a positive correlation?

Back

A positive correlation is a relationship between two variables where, as one variable increases, the other variable also increases.

Front

What is a negative correlation?

Back

A negative correlation is a relationship between two variables where, as one variable increases, the other variable decreases.

Front

What does no correlation mean?

Back

No correlation means there is no relationship between two variables; changes in one variable do not affect the other.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points.

Front

What is a line of best fit?

Back

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

Front

How do you determine the line of best fit?

Back

The line of best fit is determined by minimizing the distance between the data points and the line itself, often using the least squares method.

Front

What does it mean if a scatter plot is linear?

Back

A linear scatter plot indicates that the relationship between the two variables can be represented by a straight line.

Front

What does it mean if a scatter plot is nonlinear?

Back

A nonlinear scatter plot indicates that the relationship between the two variables cannot be represented by a straight line.

Front

How can you use a trend line to make predictions?

Back

You can use a trend line to make predictions by extending the line to estimate values for variables not directly measured.

Front

What is the purpose of estimating values from a scatter plot?

Back

Estimating values from a scatter plot helps to predict outcomes based on observed data trends.