Measures of Center

Mean

100

Find the average of 19.5, 23, 10, 2.5 and 6

What is 12.15

200

The basketball team captains as NE High school were debating who the highest scorer was. They have played four games so far. Based on the first four games, who averages the most points? Captain 1: 12, 8, 16, 9 Captain 2: 20, 3, 15, 12

Captain 1: Average score 11.25 Captain 2: Average score 12.5

300

Sara's math grade is determined by four major tests. Each counts for 25% of her final grade. Sara knows that she earned an 83, 90 and 77 on the first three tests. She also knows that her final average was an 84. What did she earn on her 4th major test?

What is 86.

Median

100

Find the median of 25, 98, 34, 16 and 12

The median is 25.

200

There is a small company in Eugene, OR that consists of 1 CEO, 1 manager, and 4 employees. What is the median salary at the company if the salaries are as follows: 24,000, 36,000 12,000 98,000 65,000 34,000

What is $35,000

300

Find the median: 12, 30, 2, 56, 63, 15, 45

What is 30?

Mode

100

Find the mode of 15, 96, 19, 12, 9, 1, 29, 19, 96, 2, 5

What is 19 and 96

200

The mode of a set of data is 12. What is the most likely value of the missing piece of data? 1, 12, 20, 15, 12, 20, ______

What is 12.

300

The mode of a set of data is 29. Given the following set of data, what values can x (the missing data point) be? 9, 29, 18, 28, 29, 14, 1, 0, 4, x

What is Any number except 9, 18, 24, 14, 1, 0, or 4

Mystery

100

Which measure (mean, median or mode) can have no value, one value, or more than one value?

What is mode?

200

Which measure (mean, median or mode) is most affected by extreme values (outliers)?

What is Mean?

300

Super saver wants to show its customers that they can save the most money at their store. They have collected the following data from 15 customers. The data represents the amount that customers saved. Which measure (mean, median or mode) will make the store look the best? $4, $2, $5, $1, $6, $9, $2, $3, $6, $8, $7, $3, $1, $6, $7

Mean: $4.67 savings Mode: $6.00 Median $5.00 Mode will make the store appear the best.