Scatterplots and Line of Best Fit B6 Review

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does a positive correlation indicate in a scatterplot?

Back

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

Front

What does a negative correlation indicate in a scatterplot?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

What does 'no correlation' mean in the context of scatterplots?

Back

No correlation means there is no apparent relationship between the two variables; changes in one variable do not predict changes in the other.

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 scatterplot, showing the general direction of the data points.

Front

How can you identify gaps in a scatterplot?

Back

Gaps in a scatterplot can be identified by looking for areas where there are no data points, indicating a lack of observations in that range.

Front

What does a negative linear relationship look like on a scatterplot?

Back

A negative linear relationship on a scatterplot appears as a downward sloping line, indicating that as one variable increases, the other decreases.

Front

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

Back

The slope of the line of best fit indicates the rate of change between the two variables; a steeper slope means a stronger relationship.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visually assess the relationship between two variables, helping to identify trends, correlations, and outliers.

Front

What is an example of a situation where you might use a scatterplot?

Back

You might use a scatterplot to analyze the relationship between hours studied and test scores among students.