Independent/Dependenr
two or more events that can happen simultaneously without one affecting the outcome of the other(s)
independent event
a way to record and count all combinations of events, using lines to form branches.
tree diagram
a calculation of the chances that an event will happen in theory
theoretical probability
Calculate the theoretical probability of:
picking a diamond in a deck of cards
4/52 or 1/13
a number from 0 to 1 that shows how likely it is that an event will happen
probability
two events are dependent if the outcome of the first affects the outcome of the second
dependent event
Sandra is at a local bubble tea store. She has the option of 2 types of tea: green tea or black tea. Then she can choose from the following toppings: tapioca, jelly, or aloe. How many total possible bubble tea combinations are there?
6
the measurement of the likelihood of an event happening, based on performing an experiment; also called empirical probability
experimental probability
Anthony tosses a coin 2 times. What is the probability he will toss 2 heads?
1/4
a comparison of the probability that an event will occur with the probability that the event will not occur (complementary events).
odds in favour
rolling a 6 on a die AND drawing a red card from a deck
independent event
You are ordering a pizza. You can choose from regular, thin or deep dish crust. You can add pepperoni or veggies as your toppings. How many outcomes are possible?
6
What do you calculate when you divide the number of favourable outcomes by the total possible outcomes?
theoretical probability
Diana is going to roll a 6-sided die. What's the probability she will role a 4 or a 5?
2/6 or 1/3
James planted 50 seeds and only 10 grew into flowers. Using this information, how many seeds would be expected to NOT sprout if he planted 100 seeds?
40/50 or 80/100
each time a card is drawn from a deck and NOT replaced, the probability of selecting a “2” of spades changes
dependent event
Your teacher has red, green and blue marbles (one of each). On your first draw, you pick a red, green and blue. You do not put the marbles back in the bag. Show a tree diagram to show your first and second draws.
1st draw should show red, green and blue, second draw should only show the colours that would be left in the bag
what do you calculate when you divide the number of times the event occurs by the total number of trials?
experimental probability
The numbers 1 to 6 are put into a bag. A number is picked and then put back into the bag. Another number is picked. What is the probability of getting the same number twice?
1/6
What is the name of Mrs. Antilope's phobia?
trypophobia
You spin a spinner 5 times and record each spin
independent event
Nicole is giving away 2 bracelets to her friends. She puts the names of 3 friends (Jane, Lily and Bri) in a hat. She picks out the names one after the other without returning them to the hat. What is the probability that Jane is NOT chosen?
2/6 or 1/3
Lizzie has a die and throws it ten times. She wants to know what’s the probability that she will roll a 5 or 6. Is this theoretical or experimental probability?
experimental probability
Olivia rolls a 10-sided die. What is the probability she rolls a 3 or a 4?
1/5
What year did Mrs. Antilope start working for HCDSB?
2019