Measures of Central Tendency and Spread Calculate

Unit 10 Test Scores: 32, 54, 87, 84, 95, 72, 91, 75, 80, 72

Find the mean.

(a)  

Unit 10 Test Scores: 32, 54, 87, 84, 95, 72, 91, 75, 80, 72

Find the median (Q2).

(a)  

Unit 10 Test Scores: 32, 54, 87, 84, 95, 72, 91, 75, 80, 72

Find the mode.

(a)  

Unit 10 Test Scores: 32, 54, 87, 84, 95, 72, 91, 75, 80, 72

Find the range.

(a)  

Unit 10 Test Scores: 32, 54, 87, 84, 95, 72, 91, 75, 80, 72

Find Q1.

(a)  

Unit 10 Test Scores: 32, 54, 87, 84, 95, 72, 91, 75, 80, 72

Find Q3.

(a)  

Unit 10 Test Scores: 32, 54, 87, 84, 95, 72, 91, 75, 80, 72

Find IQR.

(a)  

Unit 10 Test Scores: 32, 54, 87, 84, 95, 72, 91, 75, 80, 72

Which number appears to be an outlier?

(a)  

Unit 10 Test Scores: 32, 54, 87, 84, 95, 72, 91, 75, 80, 72

Using the outlier from the previous question, 32, if the outlier were removed, what would happen to the mean?

• The mean would decrease.

• The mean would increase.

• The mean would stay the same.

• There would be no mean.