Scatterplots & MAD

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an observation in the dataset.

Front

What does M.A.D stand for?

Back

Mean Absolute Deviation.

Front

How do you calculate the Mean of a data set?

Back

Add all the numbers together and divide by the total count of numbers.

Front

What is the formula for Mean Absolute Deviation (MAD)?

Back

MAD = (Sum of |each data point - mean|) / number of data points.

Front

What is the purpose of a line of best fit in a scatterplot?

Back

To show the general direction of the data points and to make predictions.

Front

What does a positive correlation in a scatterplot indicate?

Back

As one variable increases, the other variable also tends to increase.

Front

What does a negative correlation in a scatterplot indicate?

Back

As one variable increases, the other variable tends to decrease.

Front

What is the first step in calculating the Mean Absolute Deviation?

Back

Find the mean of the given data set.

Front

If the mean of a data set is 5, what is the absolute deviation of the number 3?

Back

|3 - 5| = 2.

Front

What is the last step to solving for the Mean Absolute Deviation?

Back

Find the mean of the new set of absolute deviations.