Probability Facts
If there is a 10/20 chance of something occurring, how would we describe this using probability terminology.
Even Chance or 50/50 chance
True or false... A dependent event is... dependent if the outcome of the first event affects the outcome of the second.
TRUE
Rolling an even number on a 6 sided dice. Calculate the theoretical probability.
1/2 or 3/6
What letter does Ms. Byrnes' middle name start with?
L
(... do not ask what her middle name is!)
Does Ms. Altaf have a boyfriend?
Yes, and it's complicated.
If a bag contains 5 gumballs and 3 marbles. you randomly pick a marble and then pick a second marble without returning the first marble back. What kind of event is this?
Dependent
Ms. Altaf puts 27 names of the students in our class into a hat... create two scenarios that could occur with this hat and names, one that describes an independent event and a dependent event.
answers will vary, Ms. Altaf will determine if you were correct or not
Picking an ace in a deck of cards. Calculate the theoretical probability.
4/52 or 1/13
Name 3 places Ms. Byrnes has travelled to for vacation
Any of the following answers are acceptable:
New York City
Florida
Thailand
England
Italy
Denmark
Vancouver, British Columbia
Halifax, Nova Scotia
Did Ms. Altaf fall down the escalators at a mall when she was little?
Yes, but don't worry, she survived.
Explain the purpose of a tree diagram.
answers will vary.
A tree diagram allows users to visualize possible outcomes and probabilities for a given situation. Tree diagrams, also called decision trees, are particularly useful in charting the outcomes of dependent events, where if one element changes, it impacts the entire outcome.
Ali is giving away 2 of his Pokemon cards to his friends. He puts the names of 3 friends (Hasan, Masun and Arhum) into a hat. He picks out two names one after another.
a) How many possible outcomes could occur?
b) What is the probability that Masun will not be chosen?
a) 6 possible outcomes.
b) 2/6 or 1/3 that Masun will not be chosen.
Yellow:12
Red:15
Purple: 13
Blue: 5
12/45 or 4/15
Ms. Byrnes works three jobs and trains in competitive cheerleading, what is the probability of her having an evening off after school? (not including weekends)
Unlikely, 40% chance
Is Ms. Altaf a published author of a fiction book?
LOL no.
List the 5 probability terms we use to describe the likelihood of something happening.
Impossible
Unlikely
Even Chance
Likely
Certain
Grace was the first student to choose a student to be part of her team. Then, Gia chose another student to be part of her team.
Are these independent or dependent events, explain how you know.
these are dependent events because once Grace chooses a teammate, Gia has less people to choose from. Gia's choice is dependent on Grace's choice.
5/30 = ?/150
? = 25
therefore, 25 students would be expected to have pets out of 150.
How many pets does Ms. Byrnes have?
Bonus points if you can name them (10 pts each) and what they are!
5 pets
Cat, Casey
Cat, Holly
Cat, Reece
Dog, Ella
Fish, Pepsi
Name a weird obsession Ms. Altaf has that she mentions pretty often.
Spongebob, memes, fish, saying "mmkay"
Probability is Ms. Altaf's favourite math unit!
FALSE
Explain the difference between dependent and independent probability outcomes
Independent: first outcome does not change following outcome
Dependent: second outcome can change based off of first outcome
You roll a die 30 times to see how many times you can get a 4 or higher. Is this experimental or theoretical probability?
Experimental
What is Ms. Byrnes' favourite animal?
Elephants
Fishkeeping