Vocab
Two Way Tables
With/without replacement
Independent &
Dependent
Dependent
Intersections & Unions
Conditional Probability
100
Fill in the blanks:
OR means _______, AND means ____________.
What is ADD and MULTIPLY?
100
This number should go in the bottom right corner
What is 247?
100
You pick a marble from a bag that contains 5 red, 7 green, and 13 blue marbles. This is the probability you pick a red marble, REPLACE IT, and then pick another red marble
What is
25/625 or 1/25 or 0.04?
100
True or False: rolling a dice and flipping a coin are DEPENDENT. Must explain why!
What is FALSE, because the probability of the 2 events don't affect each other, so they are INDEPENDENT
100
You have 2 bowls with starbursts inside:
Bowl 1: pink, green, yellow, orange, red
Bowl 2: pink, yellow orange
The UNION (aka sample space) of bowls 1 and 2
What is pink, green, yellow, orange, red?
100
This is the way to SAY P(A|B).
The probability of A GIVEN B
200
Or doesn't just mean add, you also have to...
What is SUBTRACT THE INTERSECTION?
200
This number of 8th graders said they spend MORE than an hour on social media per day.
What is 22?
200
You have a regular 52-card deck of cards. This is the probability of picking a diamond, NOT REPLACING IT, and then picking a spade?
What is
169/2652 or 13/204 or 0.0637?
200
You have a bag that contains, 4 snickers, 3 milky ways, 5 kit kats, and 7 Hershey kisses. You pick a snickers, eat it, then pick a kit kat. These events are independent or dependent.
What is dependent? (The probability of the second DEPENDS on what you got the first time)
200
You're playing BS with Ms. Nims and you have 2 aces, a 4, a 5, a 7, 2 jacks, and a queen. Ms. Nims has an ace, a 3, a 5, a 9, a 10, and a king. This the intersection of our 2 hands.
What is Ace and 5?
200
True or False: When finding conditional probability, instead of dividing by the total number, you divide by what you are given.
What is TRUE?
300
2 events are THIS (2 words) if they can't happen at the same time, there is no overlap.
What is MUTUALLY EXCLUSIVE?
300
True or false: Basketball and football are mutually exclusive (must say why)
What is true, because they don't intersect (will also take because they can't happen at the same time)?
300
You have a basket of 6 bananas, 4 apples, 5 pears, and 7 oranges. This is probability of picking an apple, changing your mind and putting it back, and then picking a banana.
What is
24/484 or 6/121 or 0.0496?
300
Grocery shopping online and women are independent or dependent events
What is DEPENDENT?
P(O) = 25/82, P(W) = 50/82, P(O ∩ W) = 16/82
25/82*50/82 ≠ 16/82
Different means Dependent!
300
If P(Blue) = 0.35, P(Chicken) = 0.23, and P(Blue ∩ Chicken) = 0.14, this is the P(Blue U Chicken)
What is 0.44?
300
This is probability someone likes skateboards GIVEN they don't like snowboards.
What is
23/41?
400
The following formula represents... (will take more than one answer)
P(A|B)
What is given, OR conditional probability, OR the probability of A given B has already happened?
400
The probability a person chosen is a youth OR likes electronic books
What is 75/107?
P(Y) + P(E) - P(Y∩E) = 51 + 53 - 29 = 75/107
400
You have 5 nickels, 7 dimes, and 3 quarters in your pocket. This is the probability of picking a quarter, giving it to your friend, and picking another quarter for yourself
What is
6/210 or 1/35 or 0.0286?
400
P(Red | Salad) = 0.52
P(Red) = 0.57
Independent or Dependent
What is DEPENDENT? (same = independent, different = dependent, for both AND as well as GIVEN)
400
This is the probability of getting tails when flipping a coin AND landing on 3 when rolling a regular dice.
What is
1/12 or 0.083?
400
P(B|7th) = ?
Hint: You don't have the total column/row here! So find that first!
What is
14/61?
500
This happens when you don't put the marble back in the bag, or don't return the card to the deck, etc. before picking another one. (2 word answer)
What is WITHOUT REPLACEMENT?
500
This is the probability that a student has no pets, GIVEN they are in 7th grade?
What is 10/38? (will also take 5/19, or approx. 0.263)
500
Given a regular deck of cards, this is the probability of picking a 9, returning it to the deck, and picking a diamond
What is
52/2704 or 1/52 or 0.0192?
500
P(A) = 0.25
P(B) = 0.3
P(A ∩ B) = 0.075
Independent or Dependent
What is Independent?
(2 events are independent if P(A) * P(B) = P(A ∩ B), and 0.25 * 0.3 = 0.075)
500
Two events, A and B , are independent.
P(A)=0.5
P(A ∩ B)=0.35
Find P(B)
What is P(B) = 0.7?
500
P(6th|7th) =
What is 0%? These are mutually exclusive!