Exam 3: Measures of Central Tendency

The mean can be calculated and used on all EXCEPT which of the following levels of measurement?

A distribution of income for a sample of 45 people that included the presidents of the five largest corporations in the United States and 40 assembly line workers would be________.

In a campaign debate over the level of prosperity in the state, the incumbent governor says: "average income is $53,000." His opponent responds "the average citizen earns only $38,000." Both statements are true. This is possible because________.

If the scores on a variable are 11, 14, 18, 19, 20, and 25, the median is________.

Which of the following correctly matches the level of measurement of a variable with the preferred measure of central tendency?

To locate the 6th decile, we would first multiply the number of cases (N) by________.

If one has data measured at the interval-ratio level, they can use which measure of central tendency?

Deciles, quartiles, and percentiles divide a distribution of scores into, respectively,________.

When interval-ratio data are badly skewed, the appropriate measure of central tendency is the________.

Which measure of central tendency is like a fulcrum that exactly balances all of the scores?

If you subtracted the mean from each score in a distribution and added the results, the sum would be________.

A math professor is wondering if students today are better or worse than in the past. He has given the same final to this year's class that he gave ten years ago. Compute mean, median, and mode for both classes and write a paragraph summarizing the differences.

The three commonly used measures of central tendency are________.

For variables measured at the interval-ratio level, the preferred measure of central tendency would be the________.

An instructor is preparing a report showing mid-semester grades and notes that the mean, median, and mode are all exactly 76.00. What can she conclude?

You have come across some statistics regarding the average cost of new housing in your city and a nearby city over the past several decades. Write a paragraph summarizing these statistics.

What measure of central tendency would be most appropriate to summarize data about the color of movie star's eyes?

The symbol X10 identifies________.

In a positively skewed distribution, the mean is________.

The median defines "central tendency" in terms of the________.