Statistical Questions and Measures of Center

A  number that is either MUCH larger or MUCH smaller than the rest of the numbers is a(n)

• outlier

• inlier

• lier

• I'm lying

The data set below has an outlier of 42.
2, 5, 12, 15, 19, 4, 6, 11, 16, 18, 12, 12, 42
What effect does removing the outlier have on the distribution of the data?

• The mean will decrease

• The median will decrease

• The mean will increase

• The median will increase

What is the mode of this data set represented by the dot plot?

• 17

• 23

• 25

• 20

Determine the median of the data set below: age of students in a high school math class: 15, 16, 17, 17, 16, 15, 16, 17, 16, 15, 17

• 15

• 16

• 17

Find the mode of this data set.

(a)  

What are the three measures of center?

(check ALL 3 correct answers)

• median

• measure

• mean

• mode

What is the first step to find the mean of a data set?

• multiply all the numbers in the data set to find the product

• add all the numbers in the data set to find the sum

• divide all the numbers in the data set to find the quotient

• subtract all the numbers in the data set

What is the operation in the second step to find the mean?

• add

• subtract

• divide

• multiply

Another word for mean is (a)   .

The mode is the number in the data set that appears...

• most

• least

• never

• sometimes