Scatterplots Review Flashcard

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 the 'Line of Best Fit' represent in a scatter plot?

Back

The 'Line of Best Fit' is a straight line that best represents the data points in a scatter plot, indicating the general direction of the relationship between the variables.

Front

What does a positive correlation indicate?

Back

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

Front

What does a negative correlation indicate?

Back

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

Front

What does 'no correlation' mean?

Back

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

Front

How can you identify a positive correlation in a scatter plot?

Back

A positive correlation is identified when the data points slope upwards from left to right.

Front

How can you identify a negative correlation in a scatter plot?

Back

A negative correlation is identified when the data points slope downwards from left to right.

Front

What is the significance of outliers in a scatter plot?

Back

Outliers are data points that fall far from the trend of the rest of the data; they can affect the slope of the line of best fit.

Front

What is the relationship between the number of books read and final grades in Mrs. Hall's class?

Back

The more books students read, the higher their English grade.

Front

What type of correlation exists between the amount of gas left in a car and the number of miles driven?

Back

Negative correlation.