12 Essentials Probability revision

Probability is...

• The chance something will happen

• How often an event occurs

• Only something we can theorise about

• Can only be calculated after an experiment

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.6

If someone said to you "there's an outside chance it will rain today" this means that:

• It is certain to rain

• It is impossible for it to rain

• It is unlikely that it is going to rain

• It is likely that it is going to rain

Tags

CCSS.L.1.6

CCSS.L.3.6

CCSS.L.4.6

CCSS.RL.1.4

The probability of an event occurring is a number between 0 - 1

• True

• False

Tags

CCSS.7.SP.C.5

The picture represents the way to record:

• Experimental probability

• Theoretical probability

The colour of the cars in a school car park is recorded and shown in the table pictured. Based on this sample what is the probability that a randomly chosen car is purple?

• 1.5/50

• 3

• 3/100

• 10/100

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.RP.A.2

CCSS.7.SP.A.1

CCSS.7.SP.A.2

A letter is selected at random from the expression: Wow Jordan is actually at school today". What is the probability that the letter is a vowel?

• 12/32

• 20/32

• 3/8

• 12/30

Tags

CCSS.7.SP.C.5

What is the correct way to write down the probability of landing on a red segment?

• 3/8

• Pr (red): 3/8

• Probability = 3/8

• 3/7

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

Isoa is going to select a card at random from a normal pack of 52 cards. Which of the following events is the more likely?

• An ace

• A heart

• A black 8

• A red card

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

Luke is playing a game in a casino. Each time he plays he has a 3/20 chance of winning. Approximately how many times can Luke expect to win if the plays the game 14 times?

• 1

• 2

• 3

• 4

What is the complement for passing a test?

• Not passing

• Failing

• Succeeding

• Doing well

Tags

CCSS.L.1.6

CCSS.L.3.6