Scatter Plots and Data (Unit 9 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 first step in calculating the Mean Absolute Deviation (MAD)?

Back

The first step is to find the mean of the data.

Front

How do you determine the best trend line for a scatter plot?

Back

You choose the trend line that minimizes the distance between the line and the data points.

Front

What type of correlation exists between the number of siblings and weight?

Back

There is no correlation between the number of siblings and weight.

Front

What does a positive correlation in a scatter plot indicate?

Back

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

Front

What is the Mean Absolute Deviation (MAD)?

Back

MAD is a measure of the average distance between each data point and the mean of the data set.

Front

What is a trend line?

Back

A trend line is a straight line that best represents the data on a scatter plot.

Front

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

Back

It means there is no discernible relationship between the two variables being analyzed.

Front

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

Back

You can identify a negative correlation by observing that the data points slope downward from left to right.