Measures of Center and Shapes of Distribution

Front

What is the shape of a distribution that has a longer tail on the right side?

Back

Skewed right.

Front

What is the shape of a distribution that has a longer tail on the left side?

Back

Skewed left.

Front

Which measure of center is less affected by outliers, mean or median?

Back

Median.

Front

What is the median in a data set?

Back

The median is the middle value when the data set is ordered.

Front

What is the mean in a data set?

Back

The mean is the average of all values in the data set.

Front

When is the median a better measure of center than the mean?

Back

When the data set is skewed.

Front

If a data set is skewed right, which measure of center is typically higher?

Back

Mean.

Front

If a data set is skewed left, which measure of center is typically lower?

Back

Mean.

Front

What does it mean if a distribution is symmetric?

Back

The left and right sides of the distribution are mirror images.

Front

How do you find the median in an even-numbered data set?

Back

Average the two middle values.