Mathematics
Grade 7
45 min
Identify representative, random, and biased samples
Tutorial Preview
1
A school wants to know the favorite lunch. They survey 10 students from each grade. Is this sample representative?
2
To find the town's favorite hobby, a reporter surveys people at a skate park. Is this sample biased?
3
A principal puts all 500 student names in a hat and draws 50 names for a survey. Is this a random sample?
Sample Practice Questions
Easy
A pet store surveys 10 dog owners, 10 cat owners, and 10 fish owners about their favorite pet food. What type of sample is this?
0.Representative
1.Biased
2.Random
3.Unrelated
Easy
To find the best movie genre, a survey asks people leaving a sci-fi movie. What type of sample is this?
0.Representative
1.Biased
2.Random
3.Unrelated
Easy
A computer program selects 50 student ID numbers from the entire school list of 1,000 students. What type of sample is this?
0.Representative
1.Biased
2.Random
3.Unrelated
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