Question 1

In an interview for a job, the interviewer says that the average annual income of the company's 16 employees is $73,610. The actual annual incomes of the 16 employees are shown below.

$12,500	$12,500	$16,430	$17,305
$17,408	$18,980	$20,432	$24,540
$25,676	$28,906	$28,956	$32,654
$94,024	$98,213	$250,921	$478,320

Which measure of central tendency would be most informative to the potential employee?

Answer:

1. Range

2. Median

3. Mean

4. Mode

Question 2

A dentist is conducting a survey into the number of teeth she has filled for her patients. She recorded the number of fillings for the last seven patients.

Patient	Fillings
Patient One	1
Patient Two	0
Patient Three	3
Patient Four	4
Patient Five	3
Patient Six	0
Patient Seven	2

Which measure of central tendency would best represent his patients' overall dental health?

Answer:

1. Mean

2. Mode

3. Median

4. Range

Question 3

A sample of 5 students were asked how much money they were carrying. These were their answers:

$75, $2, $5, $0, $5.

Why is the median more informative than the mean?

Answer:

1. The mean is higher than the median.

2. The mean is skewed by the outlier of $75.

3. The mean is skewed by the outlier of $0.

4. The median is higher than the mean.