Under what condition is the binomial distribution symmetrical?
Correct answer B. p = q
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Statistics MCQs
Page 27 of Statistics multiple-choice questions with answers. Tap an option to check yourself.
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How does the variance of a binomial distribution always compare with its mean?
Correct answer D. Less than mean
How many parameters does a binomial distribution have?
Correct answer D. Two
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When is the binomial distribution negatively skewed?
Correct answer D. p > 1/2
When are the mean, median and mode of a binomial distribution equal?
Correct answer A. p = 0.5
In a binomial distribution with n = 1, what is E(X)?
Correct answer C. p
A random variable X is binomial with n = 10 and p = 0.3. What is the variance of X?
Correct answer B. 2.1
In a binomial distribution with n = 6 and p = 0.9, what is the value of P(X = 7)?
Correct answer B. Zero
What is true of successive trials in a binomial distribution?
Correct answer A. Independent
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How many parameters does the binomial distribution have?
Correct answer B. 2
The binomial distribution is symmetrical when p equals what?
Correct answer B. q
How does the mean of a binomial distribution always compare with its variance?
Correct answer A. Greater than variance
What is the mean of the binomial distribution?
Correct answer A. np
How do the mean and variance of a binomial distribution compare?
Correct answer D. Unequal
In a binomial distribution with what kind of trials are the mean np and the variance npq?
Correct answer D. Independent
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In a binomial experiment, how many times is the experiment repeated?
Correct answer C. n, a fixed number of times
When is the binomial distribution positively skewed?
Correct answer C. p < q
How are the mean and variance of a binomial distribution related?
Correct answer C. Variance ≠ mean
Over what range of values does a binomial variable lie?
Correct answer A. 0 to n
If p = 0.1 and n = 400, what is the binomial mean?
Correct answer D. 40