Summary Statistics Practice

Describe the distribution:

• Symmetric

• Skewed left

• Skewed right

The mean of this distribution would be ______ the median.

• approximately equal to

• less than

• greater than

What is the median commute time?

What is the range?

What is the IQR

Describe the distribution.

• Symmetric

• Skewed left

• Skewed right

The mean of this distribution will be ____________ the median.

• approximately equal to

• less than

• greater than

Which company has a greater median?

• Company A

• Company B

Which company has a greater standard deviation?

• Company A

• Company B

What percent of values are within two standard deviations of an approximately normal distribution?

• 50%

• 68%

• 95%

• 99.7%