1. Write a one-word adjective that best describes the following:
Measures of Central Tendency
Write a one-word adjective that best describes the following:
(1)Mean (2) Median
(3)Mode (4)Range
Mean, Median, and Mode

2. Measures of Central Tendency
(1)Mean - AVERAGE
(2) Median - MIDDLE
(3)Mode - MOST
(4)Range - DIFFERENCE
Mean, Median, and Mode

3. COMMON CORE #43
Interpret differences in shape, center, and spread in the context of data sets, accounting for extreme data points.

4. Central Measures of Tendency
Test scores in an Algebra class: 99, 85, 80, 25, 99, 100
What is the mean, median, mode and range?
Mean, Median, and Mode
Mean Median 92
Mode 99 Range 75

5. Central Measures of Tendency
Test scores in an Algebra class: 99, 85, 80, 25, 99, 100
Mean Median 92
Mode 99 Range 75
Which measure of tendency best describes this data set?
Explain your answer.
I would say the median because 25 is an outlier that brings the mean way down.
Mean, Median, and Mode

6. Central Measures of Tendency
Test scores in an Algebra class: 99, 85, 80, 25, 99, 100
Mean Median 92
Mode 99 Range 75
(2) If the mean changed to 78 because one more test was added to the data set, what would the 7th grade be?
The answer is 58, x = 546
Mean, Median, and Mode

7. Central Measures of Tendency
Test scores in an Algebra class: 99, 85, 80, 25, 99, 100
Mean Median 92
Mode 99 Range 75
(3) If there were four more tests, what would the student need to average to get an A(90 or better)
The answer is not possible as would be 888/1000.
Mean, Median, and Mode

8. Practice Problem Page 707, #42 We will check shortly Mean is 73
Median is 73
Mode is 71
Range is 11
Mean would drop by 0.25, Median would drop by 0.5, and the Mode and Range would not be affected

9. ANALYING CENTRAL MEASURES OF TENDENCY
An employer states that “The mean salary for all employees at my software company is $300,000. I’ll hire you right out of high school, no college is needed. I’ll also give you a 5% cost of living pay increase each year. Would you like to come to work for my company?”
What would you do?

10. ANALYING CENTRAL MEASURES OF TENDENCY
She’s the CEO and design engineer with an annual salary of $1,000,000. Her mother is the CFO and salesperson making $740,000 annually. The company has a receptionist, secretary, maintenance engineer, and a packing specialist. Each earns $15,000 a year. Ask the class if the employer was dishonest with them.

11. ANALYING CENTRAL MEASURES OF TENDENCY
ANALYZE THESE PROBLEMS
(1) A student has six test grades in algebra. Her average is the median of her test grades.
Create a set of data that is favorable to the student, and then create a set of data that is unfavorable to the student.

12. ANALYING CENTRAL MEASURES OF TENDENCY
ANALYZE THESE PROBLEMS
(2) At professional skating competitions, skaters are given scores ranging from 1 to 10 by ten judges. The high and the low scores are thrown out, and the skater then receives the mean of the other eight scores.
Create a set of data that is favorable to the skater, and then create a set of data that is unfavorable to the skater.

13. ANALYING CENTRAL MEASURES OF TENDENCY
ANALYZE THESE PROBLEMS
(3) You own a small company with eleven employees. You entice new employees by telling them that most of the people in your company make $100,000 a year. Create a set of data where using the mode is favorable to entry level employees.
Create a set of data where using the mode is unfavorable to an entry level employee.

14. Which measure of central tendency best describes this data?