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 axis.

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What does an outlier in a scatter plot indicate?

Back

An outlier is a data point that differs significantly from other observations. It can indicate variability in the data or an error in measurement.

Front

What is the line of best fit?

Back

The 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 slope of the line of best fit?

Back

The slope is determined by the change in the y-values divided by the change in the x-values between two points on the line.

Front

What does a positive association in a scatter plot mean?

Back

A positive association means that as one variable increases, the other variable also tends to increase.

Front

What does a negative association in a scatter plot mean?

Back

A negative association means that as one variable increases, the other variable tends to decrease.

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, indicating the value of y when x is zero.

Front

What does it mean if a scatter plot shows no association?

Back

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

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How can you identify an outlier in a scatter plot?

Back

An outlier can be identified as a point that is significantly distant from the cluster of other data points.

Front

What is the purpose of using a line of best fit?

Back

The line of best fit helps to summarize the relationship between variables and can be used for making predictions.