Measures of Central Tendency

Find the mode of the data set, Identify the outlier, and find the mode excluding outliers:

100, 100, 100, 20, 120, 90.

• 110, 120, 100

• 100,100, 100

• 20, 100, 20

• 100, 20, 100

The temperature received till Friday was 34, 38, 36, 30 and 31. If the temperature on Saturday drops to 11^oC, how does the inclusion of Saturday's temperature affect the weekly mean temperature?

• increase

• decreases

• does not change

• can not be determined

By how much will the mean vary if the outlier is included?

79, 69, 81, 73, 38, 86, 68

• 70.6

• 5.9

• 76

• 5.4

By how much will the mean vary if the outlier is included?

88, 78, 90, 82, 46, 95, 77

• 5.6

• 6.1

• 85

• 79.4

By how much will the mean vary if the outlier is included?

75, 65, 77, 69, 34, 82, 64

• 5.4

• 72

• 66.6

• 5.9

By how much will the mean weights vary if the outlier is included?

84, 74, 86, 78, 40, 91, 73

• 6.4

• 75.1

• 5.9

• 81

Mathew sold 78 apples on Monday, 58 apples on Tuesday, 80 apples on Wednesday, and 64 apples on Thursday. Find the average number of apples sold by Mathew.

• 60

• 50

• 70

• 140

The stem-and-leaf plot shows the age of all the U.S. Olympic Soccer Team players. Find the median age of the players.

• 26.5

• 26

• 25

• 25.5

What effect will the outlier have on the median of the data if the outlier is excluded?

66, 58, 61, 127, 60, 66, 67

• increases

• decreases

• can not be deterimed

• does not change

When you are trying to find the MEDIAN of a set of data and 2 numbers are left in the middle after putting them in order from least to greatest, what do you do?

• List both of the numbers as the Median.

• Add the two numbers together and divide by 2.

• Pick the one that you want.

• Subtract the two numbers.