Show:
Mean
Median
Mode
Best Measure of Center
Range
100
What is the mean of a data set and how is it calculated?
The average, or all the numbers added up then divided by the amount of numbers.
100
What is the median and how is it calculated?
The middle number. Put the data in order from least to greatest and find middle. If 2 middle numbers, add them and divide by 2.
100

What is the mode as a measure of center?

Most frequently appearing score(s).

100
If you are asked your favorite fast food restaurant, which measure of center should be used?
mode
100

What is the Range? 13,14,1,25,23,14,17,14,35,14

34

200

Find the mean.  12.3, 14.7, 16.8, 10.5

13.575

200
What is the Median? 4,9,13,14,19,27,29
14
200
What is the Mode? 15,20,5,23,14,13,20
20
200
What measure of center should be used with this data set? 3, 5, 2, 4, 87, 3
median because of the outlier
200

What is the Range without the Outliers? 13,14,1,25,23,14,17,14,35,14

12

300
What kind of data do you use mean as the best measure of center?
Data that is close together.
300
What kinds of data do you use the median as the best measure of center?
Data with an outlier!
300

What kind of data is mode the best measure of center for?

Categorical data or data with a score which repeats half or more of the time.

300
What measure of center should be used on this data set? 54, 55, 56, 57, 54, 53
mean because the data is close together
300

What is the Range?  43, 45, 50, 65, 70, 200

157

400
What is the Mean? 18,8,26,5,32
17.8
400
What is the Median? 2,6,15,17,18,25,29
17
400
What is the Mode? 15,13,14,27,32,12,15,15,27,15
15
400
What measure of center should be used on this data set? Running times at a track meet for the 100 dash - some runners are MUCH faster than most of the others
median because those runners are outliers
400

What is the Range without the Outlier?  43, 45, 50, 65, 70, 200

27

500
What is the Mean? 10,14,15,17,18,24
16.333
500
What is the Median? 13,15,16,18,27,29
17
500
What is the Mode? 14,16,13,12,15,24,27,46,37,29,36,15,12,27,12,27,32,12
12
500
What measure of center would be used if a class was asked their favorite color of crayon?
mode
500

How do outliers skew the range?

They make the majority of the scores appear farther apart.