Geometric distributions require...

Repeated trials until success occurs

What does an expected value measure?

The expected value of an experiment over an infinite number of trials

What is a discrete variable?

A variable with a finite number of outcomes.

What is a continuous variable?

A variable that has has an uncountable number of values

Which condition listed below satisfies a binomial experiment?

There are 2 possible outcomes, either success or failure

Poisson distributions require...

The probability of an event repeating itself being independent.

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Ch 4 review

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Answer these questions about math.

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Questions 13

Answers

1
Geometric distributions require...
Dependent trials
The probability of success changes for each trial
Repeated trials until success occurs
A random variable that represents the probability of success.
2
For fun: What does poisson mean in French?
Statistics
Party
Fish
Dog
3
Binomial distributions require sampling without replacement
False
True
4
What's the excel formula for calculating binomial probability?
=BINOM()
=BINOM.DIST()
=BINOM.FORM()
=BINOM.PROB()
5
Hypergeometric distributions require...
Sampling without replacement
Counting successes.
Independent variables.
Sampling with replacement
6
What's the equation for the standard deviation of a binomial distribution?
δ = \sqrt{xpq}
δ = \sqrt{npq}
δ = \sqrt{nxpq}
δ = npq
7
What does an expected value measure?
The expected value of the first success of an experiment.
The probability of an event at a specific value.
The cumulative probability of n experiments.
The expected value of an experiment over an infinite number of trials
8
What is a discrete variable?
A variable with a finite number of outcomes.
A variable that falls in the middle of the data.
A variable with an uncountable number of outcomes.
A randomly selected data point.
9
What is a continuous variable?
A variable that represents a success
A variable that has has an uncountable number of values
A variable that represents a failure
A variable that has a finite number of values.
10
What's the formula for calculating the variance of a discrete random variable?
δ^2 = Σ (p-μ)^2*(x)
δ^2 = Σ (x-μ)^2*(P(X))
δ^2 = Σ (q-μ)^2*(P(X))
δ^2 = Σ (x-μ)^2*(x)
11
Which condition listed below satisfies a binomial experiment?
There are a finite number of trials.
There are an uncountable number of outcomes for each experiment.
There are 2 possible outcomes, either success or failure
The outcome falls on a scale from 1-10
12
How do you calculate the value of q?
1- probability of success
Probability of success
Probability of success / n
Probability of success / (n-1)
13
Poisson distributions require...
A fish and the ability to speak French
Dependent variables
Repeating the trial until success occur.
The probability of an event repeating itself being independent.

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