Intro to the Probability of what you might know!!!

When would you use a sample to collect data?

• Always
• Never
• When a small portion of the population can represent the whole

When would you use a census to collect data?

• when you only want info from a small group
• never
• when looking for info from all people in a population

Experimental Probability is:

• What Will happen 
• What actually happens
• What should happen
• What I think Happens

A dice (numbered 1-6) is rolled 20 times.  How many times will a number less than 4 show?

• 5
• 10
• 15
• Never

What is the Favorable Outcome

• All of the Outcomes
• What Will Happen
• What Can Happen
• What I want to Happen

What is the probability of flipping a coin and getting heads?

• 1/2
• 1/3
• 1/4
• Never, Tails never fails.

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

A compound event is..

• an event that directly causes another
• the probability of all the outcomes
• 1 event that creates 2 results
• when 2 or independent more events work together

Unequally likely is

• different possible outcomes
• outcomes that have the same chance of occuring
• outcomes that don't have the same chance of occuring
•  the favorable outcome

What are the odds against rolling a 4 when rolling one fair die?

• 6:1
• 5:1
• 1:6
• 1:5