Introduce Probability

What is the probability of spinning a shade of blue?

• 1/5

• 2/5

• 3/5

• 4/6

Theoretical Probability is?

• What Should happen

• What does happen

• What Will Happen

• What I want to Happen

If I flip a coin 10 times how many times should I get heads?

• 1

• 10

• 3

• 5

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

• 1/2

• 1/3

• 1/4

• Never, Tails never fails.

Experimental probability is: number of times the event occurs/total number of trials 

• True

• False

Theoretical Probability is: number of outcomes favorable to that event/number of possible outcomes 

• False

• True

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

What is the probability of spinning an even number? 

• 16 2/3%

• 33 1/3%

• 50%

• 75%

What is the probability of spinning a number less than 5? 

• 16 2/3%

• 33 1/3 %

• 66 2/3%

• 83 1/3%

What is the probability of selecting an orange candy?

• 0%

• 25%

• 50%

• 100%