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 quantitative 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 in the data, showing the general direction that the data points follow.

Front

How do you determine the line of best fit?

Back

The line of best fit can be determined using statistical methods such as least squares regression, which minimizes the distance between the data points and the line.

Front

What is the y-intercept of a line?

Back

The y-intercept is the point where the line crosses the y-axis, indicating the value of y when x is zero.

Front

What does a positive slope indicate in a line of best fit?

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 in a line of best fit?

Back

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

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How can you use a 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

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 is the significance of the slope in the context of a scatter plot?

Back

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

Front

How do you identify the best fitting line visually?

Back

The best fitting line visually minimizes the distance from all data points to the line, balancing the points above and below the line.