Estimating Measures of Central Tendency

Gary has taken an aptitude test 8 times and his scores are 96, 98, 98, 105, 36, 87, 95, and 93. Which measure of central tendency is most appropriate for his scores?

• Median

• Mode

• Mean

• Range

Which measure of central tendency is most appropriate for a data that describes the heights of grade 5 students?

• Mode

• Outlier

• Mean

• Median

The scores shown below were received by four science teams named A, B, C, and D in an examination. Each team reported an "average" of 90. Which of the following is true for the measure of central tendency that was used by the team?

A: 80, 85, 90, 95, 100

B: 93, 92, 90, 90, 91

C: 80, 86, 95, 92, 90

D: 85, 90, 90, 90, 90

• Team D used mean

• Team C used mode

• Team A used mean

• Team B used median

A survey was conducted by a chocolate manufacturing company, about the likes and dislikes of the flavors they marketed. Which measure of central tendency will help them most to make their choice of the most liked flavor?

• Mean

• Range

• Mode

• Median

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

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

4, 6, 3, 4, 3, 6, 24

• insufficient information to conclude

• increases

• decrease

• does not change

What effect will the outlier have on the median of the data if the outlier is excluded? 2, 4, 1, 2, 8, 4, 22

• does not change

• insufficient information to conclude

• decreases

• increases

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

64, 56, 59, 125, 58, 64, 65

• increases

• can not be determined

• does not change

• decreases