Sample of Population
Probability 0 to 1
100
No this is not a random sample. It is biased.
Is this a random sample? John asks his friends what their favorite color is?
100
Likely.
The theoretical probability of picking numbers 1,2,3,4,5 on a fair number cube is 5/6. Is the probability likely, unlikely, or neither?
200
Random
Is this a random sample? A survey of every 5th person who arrive at school.
300
Not a random sample.
Is this a random sample? A survey of the first 100 students that come to school.
400
Not random. Biased
Is this a random sample? A survey of the students who take music class.
500
Not random. Biased.
Is the sample random? A survey of one homeroom
M
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