Central Tendency Unit Test

Find the median, mode and range:

3, 5, 7, 9, 11, 8, 3

• median:7 mode:3 range:10

• median:6 mode:3 range:7

• median:7 mode:3 range:8

You and your friend have a friendly competition going on about the scores on your math quizzes. Both of your scores for the first five quizzes are given below. Find the mean, median and mode of both sets of data.

Your scores: 18, 16, 19, 15, 17 Mean: ____ Med: ____ Mode: _____

Friend’s scores: 20, 20, 13, 12, 17 Mean: ____ Med: ____ Mode: ____

Do you or your friend have the higher mean? __________

Who has the highest median? __________

Evaluate responses using AI:

OFF

What was the lowest score?

• 20

• 30

• 39

• 40

What was the median score?

• 39

• 50

• 55

• 16

What is the lower quartile?

• 39

• 40

• 35

• 50

What is the upper quartile?

• 39

• 50

• 55

• 68

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

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

The price of a cheese pizza in five different pizza delivery shops are 5, 5, 4, 6, 6, 8, and $7. Find the mean price of a cheese pizza.

• $7

• $4

• $5

• $6