Cluster sampling is especially useful when the sampling units are?
Correct answer A. Far apart
Subject / 721 questions
Statistics MCQs
Page 24 of Statistics multiple-choice questions with answers. Tap an option to check yourself.
Page 24 of 37
Which sampling method is preferred when the population is heterogeneous?
Correct answer A. Stratified sampling
In which method of data collection can sampling error not occur?
Correct answer C. Census
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What is the collection of data from every member of a population called?
Correct answer D. Both A and B
In stratified sampling, deciding how large a sample to take from each stratum is known as the problem of?
Correct answer B. Allocation
What is the total area under a probability density function curve?
Correct answer D. 1
E(aX + b) = a E(X) + what?
Correct answer D. b
What is E(aX)?
Correct answer B. a E(X)
Of what kind is the time an athlete takes to run a 400-metre race at the SAF Games?
Correct answer A. Continuous data
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For a random variable X, Var(X) = E² = E. What fills the blank?
Correct answer B. (X − μ)²
What are the basic random numbers?
Correct answer B. 0, 1, 2, ..., 9
What is the mathematical expectation of X + Y equal to?
Correct answer D. E(X) + E(Y)
What is an experiment whose outcomes vary from trial to trial called?
Correct answer B. Random experiment
For what selection are random numbers used?
Correct answer A. Random sample
The value of a random variable is determined by the outcome of what?
Correct answer C. Random experiment
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What are random numbers also called?
Correct answer B. Random digits
A continuous random variable can take all possible values on a scale within a given what?
Correct answer B. Interval
In a binomial distribution, how does the probability of success behave from trial to trial?
Correct answer A. Constant
Of what is the hourly temperature recorded by a weather bureau an example?
Correct answer C. Continuous variable
What is Var(kY)?
Correct answer D. k² Var(Y)