Before calculating which average must the data be arranged in order?
Correct answer B. Median
Subject / 721 questions
Statistics MCQs
Page 22 of Statistics multiple-choice questions with answers. Tap an option to check yourself.
Page 22 of 37
If 10 is added to every value, what happens to the arithmetic mean?
Correct answer D. Increase
The arithmetic mean is ____ by change of origin and scale. Which word fills the blank?
Correct answer B. Affected
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What is the value that divides a class into two equal parts called?
Correct answer D. Mid point
What is the difference between the two limits of a class called?
Correct answer C. Class interval
What is the systematic arrangement of data in rows and columns called?
Correct answer C. Tabulation
What is commonly used to represent data classified on a qualitative basis?
Correct answer B. Horizontal bars
What is the midpoint of the class 30–44?
Correct answer B. 37
If the population is normally distributed, when is the sampling distribution of the sample mean also normal?
Correct answer A. Always
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In sampling without replacement, how many times can a sampling unit be selected?
Correct answer A. Only once
What are the smallest individual elements that make up the entire population called?
Correct answer B. Sampling units
How many basic types of probability sampling are there?
Correct answer A. Four
In probability sampling, each sampling unit has a ____ chance of selection. Which word fills the blank?
Correct answer A. Known
What name is given to the standard deviation of the sampling distribution of a statistic?
Correct answer A. Standard error
What is the difference between a statistic and the corresponding parameter called?
Correct answer B. Sampling error
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Random samples of size 17 are taken from a population of 200 elements with mean 36 and standard deviation 8. Which statement best describes the shape of the sampling distribution of the sample mean?
Correct answer D. None of these alternatives is correct
A sample of 24 is drawn from a population of 150 elements. The sampling distribution of x̄ is?
Correct answer A. Normal if the population is normally distributed
What does a sample estimate describe a characteristic of?
Correct answer D. Population
What is meant by the sampling error?
Correct answer A. Difference between the value of the sample mean and the value of the population mean
Which of the following cannot be done by sampling?
Correct answer C. To make voters lists