Calculating Probability
Language
Venn Diagrams
Two-Way Tables
100
BRAIN BREAK! Where's Wally
Send one person from each group to the front.
The first to find Wally in the picture will get the points:
100
What word would you use to describe the probability of rolling a regular 6-sided die and it landing on 7?
100
How many people drink at least one beverage?
15 + 5 + 12 = 32
100
Some students were surveyed about whether they study History or Geography. How many students were surveyed?
31
200
The table shows the results of rolling a die 90 times:
What is the experimental probability of rolling a 2?
Note: 100 points for simplifying the fraction.
12/90 = 2/15
200
What is the complementary event of "it will rain today"?
It will not rain today.
200
A standard 6-sided die is rolled once. What is the probability that the number rolled is even or a 5 or both?
Note: 100 points is for drawing a Venn diagram.
4/6
200
BRAIN BREAK! Logic Puzzle
A man has 53 of the same socks but in different colours: 12 white, 6 black and 8 red. He closes his eyes and pulls out the socks at random. How many socks must he take out to be 100% certain he has at least one pair of black socks?
22 - all of the white, all of the red, then two more
300
Lucy rolled a dice 60 times. How many times would she expect a five to appear?
10
300
BRAIN BREAK! Word puzzle
Make the longest word possible from the following letters:
H C P R A A T E U
PARACHUTE
300
A survey of 30 people found that 21 like AFL and 12 like soccer. Also, 7 people like both AFL and soccer.
Draw a Venn diagram for this information and find the probability that someone likes neither AFL nor soccer.
4/30=2/15
300
Copy and complete this two-way table:
400
If I select one of these five points at random, what is the probability that the x-value of the point is 1?
2/5
400
What does it mean for a coin to be biased?
The probability of landing on heads and tails are not equally likely; it is weighted towards one side.
400
BRAIN BREAK! Complete the drawing:
200 points for best accurate drawing, 200 points for best funny drawing
400
One hundred citizens were surveyed regarding their use of water in their garden. Of these, 23 said that they used tank water, 48 said that they used tap water and 41 said that they did not use water on their garden at all.
Copy and complete this table:
What is the probability that someone uses both tank and tap water?
12/100=3/25
500
If I select one of these 7 points at random, what is the probability that the point lies on the line y=x ?
4/7
500
Give a definition of mutually exclusive events.
TRUE OR FALSE- Watching TikToks and studying are mutually exclusive events.
Events that don't have any overlap - you can't be both at the same time
TRUE
500
The Venn diagram shows how many numbers between 1 and 100 are odd and how many are prime. If an odd number is chosen, what is the probability that it is prime?
24/50=12/25
500
There are 120 students in Year 11. Each student studies either French, Spanish, German, or Welsh.
21 of the 40 studen