A2 Probability & Statistics Review

A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?

• 3/10
• 3/9
• 1/9
• 1/3

Roberto wants to know the favorite sport of adults in his hometown.  He surveys 50 adults at a baseball game.  Is this random or biased sampling?

• Random
• Biased

In a cup are the numbers 1 - 20. Find the theoretical probability of 
picking an even number. 

• 10/20
• 1/2
• 1/20
• 20/20

A type of probability that describes what should happen for an event.

• experimental probability
• theoretical probability
• odds
• probability

A type of probability that describes what actually happens for an event.

• theoretical probability
• experimental probability
• outcome
• odds

If you spun the spinner 1 time, what is the probability it would land on a black piece?

• 1 / 7
• 2 / 7
• 3 / 7
• 4 / 7

It is the set of all possible outcomes in an experiment.

• Random Variable

• Sample Space

• Mean

• Data

Identify if this is a population or sample:

You obtain a list of all the students at Central High School

• Population

• Sample

Identify if this is a population or sample:

You pick every 5th person who enters the school to answer a survey

• Population

• Sample

Identify if this is a population or sample:

A gym owner surveys the members who come into the gym between 4pm-6pm about the classes offered at the gym.

• Population

• Sample