Flashcards

Flashcards 44 Flashcards
Students 1 Students
Language English
Level University
Created / Updated 08.10.2017 / 29.10.2017
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3 Exact answers 27 Text answers 14 Multiple-choice answers
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If data are spread out, the range, variance and standard deviation will decrease (T/F)?

F
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If the data values are all the same, the range, vairance and standard deviation will be zero?(T/F)

T
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All the range, variance, and standard deviation cannot be negative? (T/F)

T
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Which of the following statistics is not a measure of central tendency?

Mean

Median

Mode

Variance

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Which of the following statements about the median is NOT true?

It is less affected by extreme values than the mean

It is a measure of central tendency

It is equal to variance

it is the same to mode in bell-shaped distribution

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In a perfectly shaped symmetrical distribution

the range equals the variance

the range equals the mean

the mean equals the median

the variance equals the standard deviation

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Which one is a categorical variable?

Temperature

Salary

Shoe brand

Weight

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Does a high correlation imply there is a 
causality between two variables? (T/F)

True

False