# Stats 3

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question
Which measures of central location are not affected by extremely small or extremely large values?
Mode and median
question
What is the lowest level of measurement that a median can be computed?
ordinal
question
What is a unique characteristic of the mean deviation?
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?
(n + 1)/2
question
What is a disadvantage of the range as a measure of dispersion?
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?
Marital status of college students at a particular university
question
What is the relationship between the variance and the standard deviation?
Variance is the square of the standard deviation.
question
For any data set, which measures of central location have only one value?
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 __________.
Bimodal (having two modes)
question
Which measure of dispersion disregards the algebraic signs (plus and minus) of each difference between X and the mean?