Line of Best Fit Flashcard

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. It shows the trend of the data points.

Front

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

Back

You can determine the line of best fit by visually inspecting the scatter plot and drawing a line that minimizes the distance between the line and all the data points.

Front

What does a positive correlation in a scatter plot indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Front

What does a negative correlation in a scatter plot indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What does it mean if there is no correlation in a scatter plot?

Back

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

Front

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

Back

The purpose of using a trend line is to summarize the relationship between variables and to make predictions based on the data.

Front

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

Back

You can use the line of best fit to predict the value of one variable based on the value of another by substituting the known value into the equation of the line.

Front

What is the equation of a line in slope-intercept form?

Back

Front

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

Back

The slope of the line of best fit represents the rate of change between the two variables.

Front

What is the y-intercept in the context of a line of best fit?

Back

The y-intercept is the point where the line crosses the y-axis, representing the value of the dependent variable when the independent variable is zero.