What is the sum of deviations about the mean always equal to?
Correct answer A. Zero
Subject / 721 questions
Statistics MCQs
Page 32 of Statistics multiple-choice questions with answers. Tap an option to check yourself.
Page 32 of 37
A distribution has a mean of 23, median 24 and mode 25.5. What is its most likely shape?
Correct answer D. Negatively Skewed
What is the arithmetic mean of two positive numbers a and b?
Correct answer B. (a + b)/2
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What describes the central part of a set of numbers?
Correct answer A. Measure of Central Tendency
For a distribution where Σ(x − 24) = 0 and Σ(x − 28) = −24, what is the arithmetic mean?
Correct answer B. 24
A distribution has a mean of 14 and a standard deviation of 5. What is its coefficient of variation?
Correct answer C. 35.7%
If the mean of 10 numbers is 9, what is their sum?
Correct answer C. 90
Which of these is not based on all the observations?
Correct answer C. Mode
From which measure is the sum of deviations equal to zero?
Correct answer D. Mean
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Based on the heights of five classmates, you claim that the average height of all students in your college is 67 inches. What kind of statistics is this?
Correct answer C. Inferential Statistics
What is the mean of a constant b?
Correct answer B. b
Making an entry slip at a service hospital is which method of collecting data?
Correct answer A. Registration
What is the average of the first n natural numbers?
Correct answer A. (n + 1)/2
What kind of results are obtained by counting?
Correct answer C. Discrete
From which measure is the sum of squared deviations smallest?
Correct answer C. Mean
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Of what is the eye colour of employees an example?
Correct answer D. Attribute
For a series of N values, what is the geometric mean?
Correct answer A. The Nth root of the product of N values
In a frequency distribution where the last cumulative frequency is 300, where does the median lie?
Correct answer A. 150th item
What is the median of 160, 180, 200, 280, 300, 320 and 400?
Correct answer D. 280
Data on consumer opinions about a product, gathered through lady field workers, are what type of data?
Correct answer B. Primary