Mean
Median
Mode
Range
Vocabulary
100
6, 12, 9
What is 9
100
1, 2, 3
What is 2
100
1, 5, 3, 2, 5
What is 5
100
4, 8, 21, 84
What is 80
100

A small part that is representative of a whole.

Sample

200
5,2,12,28
What is 10
200
7, 17, 19, 33, 45
What is 19
200
21, 13, 17, 8, 21, 17, 13, 21
What is 21
200
42, 36, 23, 12
What is 30
200

A sample that is formed by selecting individuals from the population at random.

Random Sample

300
4, 19, 24, 13, 10
What is 14
300
23, 8, 56, 13, 14
What is 14
300
4, 13, 98, 41, 13, 23, 14
What is 13
300
72, 519, 392, 412
What is 447
300

The whole group that you are interested in learning about.

Population

400
7, 13, 1, 15, 21, 33
What is 15
400
1, 3, 5, 8
What is 4
400
33, 75, 38, 17, 33, 13, 33
What is 33
400
63, 7, 92, 2, 61, 15
What is 61
400

A study where data is collected from everyone in the whole population.

Census

500
16, 23, 41, 23, 8, 37, 6
What is 22
500
23, 6, 123, 13, 11
What is 8.5
500
1, 23, 31, 12, 23, 36, 21, 18, 23, 68
What is 23
500
25, 82, 40, 70, 126, 723, 23
What is 700
500

The value of your sample statistic will vary depending on the sample that you happen to select, because different samples may include different individuals from the population.

Variability

M
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