Stats 3

9 September 2022
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13 test answers

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question
Which measures of central location are not affected by extremely small or extremely large values?
answer
Mode and median
question
What is the lowest level of measurement that a median can be computed?
answer
ordinal
question
What is a unique characteristic of the mean deviation?
answer
It uses absolute values.
question
For a data set with an odd number of observations that have been sorted from smallest to largest values, where is the median located?
answer
(n + 1)/2
question
What is a disadvantage of the range as a measure of dispersion?
answer
It is based on only two observations.
question
The mean, as a measure of central location, would be inappropriate for which one of the following?
answer
Marital status of college students at a particular university
question
What is the relationship between the variance and the standard deviation?
answer
Variance is the square of the standard deviation.
question
For any data set, which measures of central location have only one value?
answer
Mean and median
question
Sometimes, a data set has two values that have the highest and equal frequencies. In this case, the distribution of the data can best be described as __________.
answer
Bimodal (having two modes)
question
Which measure of dispersion disregards the algebraic signs (plus and minus) of each difference between X and the mean?
answer
Mean deviation
question
Which of the following measures of dispersion are based on deviations from the mean?
answer
Correct All apply
question
Which one of the following is referred to as the population mean?
answer
Β΅
question
From the easiest to the hardest "ease of interpretation," rank the measures of dispersion.
answer
Correct Range, mean deviation, variance