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