Scatter Plot & Line of Best Fit Practice

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two variables by displaying data points on a two-dimensional grid.

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What does the line of best fit represent in a scatter plot?

Back

The line of best fit represents the trend of the data points, showing the overall direction of the relationship between the two variables.

Front

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

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the slope (m) indicate in the context of a line of best fit?

Back

The slope (m) indicates the rate of change of the dependent variable (y) with respect to the independent variable (x).

Front

What does a positive slope indicate about the relationship between two variables?

Back

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

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What does a negative slope indicate about the relationship between two variables?

Back

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

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What is the y-intercept (b) in the equation of a line?

Back

The y-intercept (b) is the value of y when x is 0, representing where the line crosses the y-axis.

Front

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

Back

The line of best fit is determined by visually assessing the data points and drawing a line that minimizes the distance to all points.

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What does it mean if there are many data points above the line of best fit?

Back

If there are many data points above the line of best fit, it suggests that the model may not accurately represent the data, indicating potential underestimation.

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What does it mean if there are many data points below the line of best fit?

Back

If there are many data points below the line of best fit, it suggests that the model may not accurately represent the data, indicating potential overestimation.