What z-score corresponds to the mode of a normal distribution?
Correct answer B. 0
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Statistics MCQs
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A standardised normal score z tells you how many of which unit a value lies from the mean?
Correct answer A. S.D.
The area to the right of z = 0 corresponds to which values of z?
Correct answer B. Positive
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What kind of distribution is the normal distribution in terms of symmetry?
Correct answer A. Symmetrical
Which quantity’s sign shows whether a distribution is positively or negatively skewed?
Correct answer D. µ3
In a normal distribution β1 = 0. What is the value of β2?
Correct answer C. 3
What is the probability of a sure event?
Correct answer B. One
A normal distribution has µ = 35 and variance 16. What is its mode?
Correct answer D. None of these
When three dice are rolled, how many outcomes are in the sample space?
Correct answer B. 216 outcomes
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What is the value of the maximum ordinate of the standard normal curve at Z = 0?
Correct answer B. 0.3989
When a fair die is rolled, what is the probability of getting an even number (or an odd number)?
Correct answer C. 3/6
Which measure determines how spread out or peaked the normal curve looks?
Correct answer D. Standard Deviation
Which parameter governs how flat or peaked a normal distribution is relative to others?
Correct answer C. Standard Deviation
A list of all possible sample ____ is called the sample space. What fills the blank?
Correct answer C. Points
How much of the area under the normal curve lies on each side of the mean?
Correct answer D. 0.5
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If Y = 5X + 10 and X ~ N(10, 25), what is the mean of Y?
Correct answer D. 60
If X ~ N(16, 49), what is its mean?
Correct answer D. 16
What is the probability of drawing a diamond from a pack of 52 cards?
Correct answer C. 13/52
Which statement holds for a symmetrical distribution?
Correct answer A. Mean = Mode = Median
If two dice are thrown, what is the probability that both show the same number?
Correct answer C. 6/36