Probability and Random Sampling Quiz

A letter(s) is selected from the word COMPUTER. Find each probability. P(consonant)

A consonant are letters that are not 'a, e, i, o and u')

• 1/10

• 5/8

• 3/5

• 1/30

Jimmy rolls a number cube. Which outcome is certain? (Hint: A number cube has 6 sides and it is number from 1 - 6.)

• Rolling a number greater than 0

• Rolling an even number

• Rolling a number less than 2

• Rolling a 5

If an event is equally likely, then its probability is

• 1

• 0.5

• 0.75

• 0

Jonathon spins a spinner that has the numbers 1 to 12 Which outcome is impossible?

• landing on a 5

• landing on an even number

• landing on a number that is 8 or less

• landing on a number greater than 13

The probability of an event occurring is 25%. Which likelihood would BEST represent this situation?

• certain

• unlikely

• impossible

• very likely

Jasmine wanted to know who would be interested in having talent show at after school. She asked students that were sitting at her lunch table.

• Convenience Sample

• Random Sample

• Voluntary Response Sample

• Systematic Sample

What type of sampling involves participants choosing to respond voluntarily?

• Random Sampling

• Voluntary Response Sampling

• Systematic Sampling

• Stratified Sampling

Which probability is closest to 0, indicating the least likelihood of occurrence? (Hint: Convert each one into a decimal to find out.)

• 3/13

• 3/5

• 1/10

• 4/9

Which sampling method is likely to represent the entire population equally?

• Random Sampling

• Voluntary Response Sampling

• Systematic Sampling

• Stratified Sampling

If a probability is expressed as 50% what does it indicate about the likelihood of the event?

• The event is very likely to occur.

• The event is unlikely to occur.

• The event is equally likely to occur or not occur. (This means equally likely as well)

• The event is certain to occur.