Chapter 3 Central Tendency

Which measure of central tendency is most appropriate for skewed distributions?

Median

What is the median for these data? 5, 1, 1, 3, 2

2

When a histogram or polygon chart for a quantitative variable has two distinct peaks, then the distribution is referred to as _____.

bimodal

Which measure of central tendency is MOST influenced by outliers?

mean

The three most common measures of central tendency are:

mean, median, mode

Which of these measures is LEAST affected by outliers? mean standard deviation geometric mean median

median

In a negatively skewed distribution, which measure will generally have the highest value?

mode

Which measure of central tendency is LEAST efficient? all are the same mode mean median

mode

Which measure of central tendency works for nominal variables?

mode

What is the minimum level of measurement needed to calculate the mode?

nominal

What is the minimum level of measurement needed to calculate the median?

ordinal

Which of the following is NOT a measure of central tendency? mean median standard deviation mode

standard deviation