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, showing the trend of the data points.

Front

How do you determine the correlation of a data set?

Back

Correlation can be determined by observing the direction of the data points: positive correlation means as one variable increases, the other also increases; negative correlation means as one variable increases, the other decreases; no correlation means there is no discernible pattern.

Front

What does a positive correlation indicate?

Back

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

Front

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

Back

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Back

Front

Back

The y-intercept is 3.

Front

How can you predict a value using the line of best fit?

Back

To predict a value, substitute the known value of the independent variable into the equation of the line of best fit.

Front

What does it mean if a line of best fit is not accurate?

Back

If a line of best fit is not accurate, it means that the line does not closely follow the trend of the data points, leading to poor predictions.

Front

What is the formula for the line of best fit based on two variables?

Back

Front

What is the significance of the slope in a line of best fit?

Back

The slope indicates the rate of change between the two variables; a steeper slope means a greater change.