Scatter Plots Review

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.

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 is the purpose of a line of best fit in a scatter plot?

Back

The line of best fit is used to summarize the relationship between the variables and to make predictions based on the data.

Front

How can you determine the line of best fit visually?

Back

The line of best fit can be determined by drawing a straight line that best represents the trend of the data points.

Front

What does it mean if a scatter plot has no correlation?

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 first step in analyzing a scatter plot?

Back

The first step is to observe the overall pattern of the data points to identify any trends or relationships.

Front

How do you interpret the slope of the line of best fit?

Back

The slope indicates the rate of change between the two variables; a positive slope means both variables increase together, while a negative slope means one variable increases as the other decreases.

Front

What is the significance of outliers in a scatter plot?

Back

Outliers are data points that differ significantly from other observations; they can affect the line of best fit and the overall analysis.

Front

How can you use a scatter plot to make predictions?

Back

You can use the line of best fit to estimate the value of one variable based on the value of the other variable.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.