If β1 = 0, what can be said about the distribution?
Correct answer A. Symmetrical
Subject / 721 questions
Statistics MCQs
Page 9 of Statistics multiple-choice questions with answers. Tap an option to check yourself.
Page 9 of 37
What is the lack of uniformity in the sizes of items called?
Correct answer B. Variation
What does P95, the 95th percentile, represent?
Correct answer A. The point below which 95% of the area lies
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The second moment about the mean is always equal to the?
Correct answer C. Variance
For a normal distribution, what is the quartile deviation (Q.D.) equal to?
Correct answer A. 0.6745σ
Which of the following is a measure of relative dispersion?
Correct answer D. Coefficient of quartile deviation
How is the normal distribution classified in terms of kurtosis?
Correct answer B. Mesokurtic
Quartile deviation is not capable of further ____ treatment. Which word fills the blank?
Correct answer A. Algebraic
In a symmetrical distribution, what is the coefficient of skewness?
Correct answer C. 0
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Approximately what is the mean deviation of a normal distribution?
Correct answer A. (4/5)σ
The degree of ____ of a distribution, measured relative to the normal distribution, is known as kurtosis. Which word fills the blank?
Correct answer A. Flatness
What value of Z corresponds to the median of a normal distribution?
Correct answer D. 0
Which measure is used to check consistency?
Correct answer C. Coefficient of variation
If X ~ N(55, 49), what is σ?
Correct answer D. 7
The value of the standard deviation is influenced by every single?
Correct answer C. Observation
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The first moment about the mean is always equal to?
Correct answer A. Zero
What are the lower and upper quartiles of the standard normal variate?
Correct answer C. -0.6745 and 0.6745
What is the total area under the normal curve?
Correct answer C. 1
What is the simplest measure of dispersion?
Correct answer A. Range
When is the normal distribution typically used as an approximation, in terms of the sample size n?
Correct answer D. Large