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Haile - Probability Distribution Flashcards | StudBud
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Haile - Probability Distribution
Haile - Probability Distribution
20 terms
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StudBud Administration
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Statistics Probability Distributions
Flashcards
20 cards
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Questions
20
Answers
1
δ=√npq can be used to find the standard deviation of...
a Binomial distribution only
Only 50/50 distributions
Any probability distribution
Any data set
2
If you want to find the binomial probability of getting at most 3 use
binompdf(n,p,3)
binomcdf(n,p,3)
1-binomcdf(n,p,3)
1-binomcdf(n,p,2)
3
Which is a binomial experiment?
Flipping a coin
Picking a card
Rolling a dice
4
Which is NOT criteria of a binomial distribution?
Yes or No Questions only
Two outcomes only
Fixed number of trials
Probability of Success is Constant
5
The expected value or the "balance point" of a probability distribution is really just the ...
Mean
Standard Deviation
IQR
Lowest Number
6
If you are finding a binomial probability of exactly equal use
binomcdf
binompdf
7
Calculating the expected value of a probability distribution is like calculating the ...
Weighted Average
Mode
5 Number Summary
Trimmed Mean
8
Creating a probability distribution is exactly like creating a ...
box plot
correlation graph
density curve
relative frequency table
9
If you want to find the binomial probability of getting more than 3 use
1-binomcdf(n,p,3)
binomcdf(n,p,3)
1-binomcdf(n,p,2)
binompdf(n,p,3)
10
Is the following variable discrete or continuous? The cost a your last Starbucks purchase
Continuous
Discrete
11
Is the following variable discrete or continuous? The time it takes you to answer this question
Discrete
Continuous
12
What are the requirement for a probability distribution?
numbers can be negative
numbers must sum to 1
All numbers must be between 0 and 1
All numbers must be the same.
13
This formula can be used to find the mean of a binomial distribution
μ=Σx/n
μ=np
14
Given a random variable X between 0 and 3, if P(0) = .15, P(1) = .2, P(2)= .3, P(3) =?
.45
.35
.65
.25
15
Is the following variable discrete or continuous? Amount of gasoline needed to go to the beach
Discrete
Continuous
16
If I want to find the probability of getting at least 2 cars, what formula would I use?
P(x>2)
P(x≥2)
P(x<2)
P(x=2)
17
Expected value is the same as the
Mean
None of the above
Standard Deviation
Varience
18
If you want to find the binomial probability of getting at least 3 use
1-binomcdf(n,p,3)
binomcdf(n,p,3)
binompdf(n,p,3)
1-binomcdf(n,p,2)
19
If I want to find the probability of getting at most 2 cars, what formula would I use?
P(x≥2)
P(x>2)
P(x<2)
P(x≤2)
20
If I want to find the probability of getting exactly 2 cars, what formula do I use?
P(x < 2)
P(x > 2)
P(x = 2)
