Probability so far

Probability So Far

By Eliza Lans

​We learnt several new words, such as event/outcome, experiment, favoured outcome, outcome, sample space.

​​Glossary

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Have a nice day. Happy teaching!

Calculating Probability

Drag and Drop

The sample space of a dice roll would be: (​

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Placeholder

​

Placeholder

​

Placeholder

​

Placeholder

& 6)

Drag these tiles and drop them in the correct blank above

1,

2,

3,

4,

5,

7

9

2.5

-2

Match

Match the following words with their definition:

• Sample Space

• Probability

• Trial

• Favoured Outcome

• Experiment

All of the possible outcomes

How likely something is to happen

Completing an experiment once

The thing we want to happen

The steps needed to try out the event

• All of the possible outcomes

• How likely something is to happen

• Completing an experiment once

• The thing we want to happen

• The steps needed to try out the event

Once we have determined how likely something is to happen as a percentage, we use key words to describe the where they sit on the scale of impossible to certain.

​

Describing Likelihood

Match

Match the following events with their likelihood

• A pig flying

• You will get a tails on a coin flip

• Gravity will keep you planted on the ground

• You will win the lottery

• School will be on tomorrow

impossible

Even

Certain

Unlikely

Likely

• impossible

• Even

• Certain

• Unlikely

• Likely

Labelling

Put the likelihood descriptors on the appropriate part of the scale:

Drag labels to their correct position on the image

Even

Likely

Certain

Unlikely

Impossible

Theoretical Probability

Multiple Select

What is the probability of spinning a 2 on the spinner?

• 1/2

• 1/3

• 1/8

• 1/4

Multiple Choice

A die is rolled. What is the probability that the result is less than 3 ?

• 1/2
• 1/3
• 1/4
• 1/6

Multiple Choice

Probability can be written as a 

• fraction
• decimal
• percent
• all of the above

Multiple Choice

The tree diagram shows the outcomes of rolling a die and flipping a coin.  
How many total outcomes are there?  

• 6
• 12
• 24
• 36

Multiple Choice

You have a 3 tops, 2 pants and 2 shoes. How many total outfit options are represented?

• 12 outfits

• 22 outfits

• 3 outfits

• 7 outfits

Multiple Choice

What type of probability is a way of estimating the probability of an event happening based on repeated trials?

• Experimental Probabillity

• Theoretical Probability

​Experimental probability

Multiple Choice

Dylan made 15 out of 35 free throws.

What's his experimental probability as a simplified fraction?

• 3/7

• 15/35

• 1/2

• 5/7

Multiple Choice

A coin is tossed 18 times. It lands on heads 12 times. What is the experimental probability of the coin landing on tails? simplify the fraction!

Multiple Choice

The bar graph shows the results of spinning the spinner 200 times. What is the experimental probability of landing on a 3?

Multiple Choice

What type of probability is used to find the probability of an event when all outcomes are equally as likely. "What COULD happen"

• Experimental Probability

• Theoretical Probability

Multiple Choice

Theoretical Probability is?

• What Should happen
• What does happen
• What Will Happen
• What I want to Happen

Multiple Choice

Experimental Probability is:

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

Multiple Choice

What is the probability of rolling 15 with a pair of dice?

• impossible
• unlikely
• equally likely
• likely

Multiple Choice

To calculate the probabilities of the outcomes from a tree diagram you:

• add the probabilities on the branches

• Count how many outcomes there are and make them equal

• Throw your hands up in the air and quit!

• multiply the probabilities on the branches

​Mutually Exclusive and Independent Events

Multiple Choice

How many senior boys play football and wrestle?

• 9
• 12
• 18
• 39

Multiple Choice

How many students do not snowboard?

• 21
• 22
• 28
• 29

Multiple Choice

If a spinner is numbered 1 – 8, when you spin it the events of spinning an even number and a number less than 4 are ...

• Mutually Exclusive

• Overlapping

Multiple Choice

When rolling a single die, the events of rolling an even and an odd number are ...

• Mutually Exclusive

• Overlapping

Multiple Choice

When rolling a single die, the events of rolling an even number and rolling a ‘5’ are ...

• Mutually Exclusive

• Overlapping

Multiple Choice

If you are picking a card randomly from a deck of cards, the events of picking a jack and picking a heart are ...

• Mutually Exclusive

• Overlapping

Independent or Dependent

Multiple Choice

A bag contains 5 striped cubes, 3 dotted cubes, 4 white cubes and 3 red cubes. What is the probability of drawing a red cube, replacing it, and then drawing a white cube?

• independent

• dependent

Multiple Choice

Clinton has a bag of Skittles™. Inside the bag are 6 red, 4 orange, 7 yellow, 3 purple and 4 green Skittles™. What is the probability of drawing a green Skittle™, replacing it, and then drawing another green Skittle™?

• independent

• dependent

Multiple Choice

A bag contains 2 striped cubes, 3 dotted cubes, 4 white cubes and 3 red cubes. What is the probability of drawing a white cube, not replacing it, and then drawing a dotted cube?

• dependent

• independent

Multiple Choice

You spin the spinner two times. The first time it lands on 3, and the second time it lands on 5. These two events are

• Independent Events

• Dependent Events