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Togus Bash
STATISTICS
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Probability Distributions
In an exponential distribution, what does the parameter ? represent?
A. Mean.
B. Variance.
C. Standard deviation.
D. Rate parameter.
Togus Bash
STATISTICS
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Probability Distributions
What is the relationship between the normal and binomial distributions?
A. Binomial distribution approaches normal distribution as n increases and p is close to 0.5.
B. Binomial distribution is always normal.
C. Normal distribution is always binomial.
D. There is no relationship between the two distributions.
Togus Bash
STATISTICS
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Probability Distributions
In a geometric distribution, what is the expected number of trials until the first success?
A. 1/p.
B. p.
C. 1-p.
D. p/(1-p).
Togus Bash
STATISTICS
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Probability Distributions
What is the main assumption of the Poisson distribution?
A. Events occur independently.
B. Events occur at a constant rate.
C. Events occur in continuous time.
D. Events occur in discrete time.
Togus Bash
STATISTICS
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Probability Distributions
In a normal distribution, what does the 68-95-99
A. 68% of data lies within 1 standard deviation, 95% within 2 standard deviations, and 99.7% within 3 standard deviations.
B. 95% of data lies within 1 standard deviation, 99.7% within 2 standard deviations, and 99.9% within 3 standard deviations.
C. 68% of data lies within 1 standard deviation, 95% within 3 standard deviations, and 99.7% within 5 standard deviations.
D. 95% of data lies within 1 standard deviation, 99.7% within 2 standard deviations, and 99.9% within 4 standard deviations.
Togus Bash
STATISTICS
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Probability Distributions
Which of the following is a continuous probability distribution?
A. Binomial distribution.
B. Poisson distribution.
C. Exponential distribution.
D. Hypergeometric distribution.
Togus Bash
STATISTICS
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Probability Distributions
What is the purpose of the Central Limit Theorem?
A. To describe the shape of a distribution.
B. To make inferences about population parameters.
C. To determine the sampling distribution of the mean.
D. To calculate probabilities.
Togus Bash
STATISTICS
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Probability Distributions
In a geometric distribution, what does the parameter p represent?
A. Probability of success in a single trial.
B. Probability of success in multiple trials.
C. Number of trials.
D. Number of failures.
Togus Bash
STATISTICS
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Probability Distributions
What is the relationship between the mean and standard deviation in a normal distribution?
A. Mean is always greater than standard deviation.
B. Mean is always less than standard deviation.
C. Mean and standard deviation are always equal.
D. Mean and standard deviation are not necessarily equal.
Togus Bash
STATISTICS
-
Probability Distributions
Which of the following is a property of the Poisson distribution?
A. Mean is always greater than variance.
B. Variance is always greater than mean.
C. Mean and variance are always equal.
D. Mean and variance are not necessarily equal.
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STATISTICS
Inferential Statistics
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Probability Distributions
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