Averages Flashcards
1
Q
What is mean (x-bar)?
A
the sum of all the values divided by the number of values (n)
2
Q
Example of Mean
Data Set 1: 16, 22, 14, 20, 19, 17, 22
n = 8
Calculate the Mean
A
x-bar = 16 + 22 + 14 + 22 + 20 + 19 + 17 + 22 = 152 / 8 = 19 mean
3
Q
What is median?
A
the middle value when the data is ranked by value
4
Q
Example of Median
14, 16, 17, 19, 20, 22, 22, 22
What is the median?
A
the median is halfway between the values - 19.5
5
Q
What is range?
A
the difference between the maximum and minimum value
6
Q
Example of Range
Data Set 1: 22 - 14 =
Data Set 2: 13 - 6 =
A
22 - 14 = 8
13 - 6 = 7
