Question

Below are monthly rents paid by 30 students who live off campus.

730	730	730	930	700	570
690	1,030	740	620	720	670
560	740	650	660	850	930
600	620	760	690	710	500
730	800	820	840	720	700

(a)	Using Excel, find the mean, median, mode, and standard deviation. (Round your answers to 2 decimal places.)

Descriptive Statistics	Data
Mean
Median
Mode
Standard Deviation

b. Which measure or measures of central tendency are most appropriate for this data set?
	The mode because the data is integer valued with a very small range. The median because the data set is strongly skewed. The mean or the median, because these measures are close in value, which suggests the data set is fairly symmetric.

c.

Do the measures of central tendency agree?
	Yes No

e. Use Excel or MegaStat to sort and standardize the data. What is the z score for the following rent value? (Round your answer to 2 decimal places.)

Rent value	z-score
800

f.

Are there unusual data values?
	Yes No

g.

Using the Empirical Rule, do you think the data could be from a normal population?
	Yes No

Answer 1