stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
AP Stat- Unit 4: Probability Flashcards | StudBud
Explore
/
AP Stat- Unit 4: Probability
AP Stat- Unit 4: Probability
18 terms
·
StudBud Administration
·
226 plays
Probability vocabulary
Flashcards
18 cards
F
Practice quiz
P
Host live
L
Questions
18
Answers
1
The Greek letter "rho" is used to show the _________ between two dependent random variables
variance
correlation
probability
average
2
What type of diagram do we use to represent continuous random variables?
Two-way Tables
Density Curves
Probability Histograms
Normal Distribution Curves
3
Define: Mutually exclusive(disjointed) events
Two events that aren't real
Two events have no outcomes in common
Two events that depend on each other
Two events that always occur together
4
What are the two critical parts of a probability model?
1. Title/Label; 2. Scale
1. Sample Space; 2. The probability of each outcome
1. Sample space; 2. Two-Way Table
1. The start; 2. The end
5
This is an example of what type of diagram?
Stem and Leaf Plot
Two-Way Table
Normal Distribution Curve
Tree Diagram
6
Define: Discrete Random Variable
a random variable who conducts business on the down low
a random number between 0 and 1
a random variable that takes on all values in an interval
a random variable that takes on countable values
7
How do you find the mean of a discrete random variable? (Expected Value)
µx = µx = ∑(xipi)2 / xi
µx = σx2 + σy2 +2pσxσy
µx = ∑(xipi) / xi
µx = ∑xipi
8
Can events be both mutually exclusive and independent?
What is an event?
No
Yes
Maybe
9
As the number of trials increase, the proportion of outcomes approaches theoretical probability
The law of large numbers
The law of repetition
The first law of Thermodynamics
The law of Predictability
10
Define: Probability
The mathematics of change
The mathematics of Love
The mathematics of graphing
The mathematics of chance
11
The probability that an event occurs given that another event has already occurred
Probability model
Probability distribution
Conditional Probability
Independent Events
12
What is the purpose of drawing a Venn diagram for probability?
To illustrate Sample Space, union, and intersection
To only illustrate dependent events
To illustrate mutually exclusive events
Because Ms. Hood told me to
13
Which of these ways is a correct way to check if two events are independent?
P(A∩B) = P(A) P(B)
P(A|B) = P(A)
P(A|B) = P(A∩B)/ P(B)
P(B|A) = P(B)P(A)
14
What type of diagram do we use to represent discrete random variables?
Bar Graphs
Probability histograms
Density curves
Normal Distribution Curves
15
Define: Continuous Random Variable
a random variable that has countable values
Independent events
a random variable that takes on all values in an interval
Title, Label, Scale
16
P(A∪B) = P(A) + P(B) - P(A∩B) This is...
A formula of no significance
General Addition Rule for mutually exclusive events
General Addition Rule
General Multiplication rule
17
The complement of A is...
B
1 + P(A)
1 - P(A)
P(A) - 1
18
How do you find the standard deviation of a random variable? (√variance)
σx = σx2 + σy2 +2pσxσy
σx = ∑xipi
σx= √∑(xi - µx)2pi
σx = ∑(xipi)2 / xi
