Luhmann, Schimmack, and Eid (2011) were interested in the relationship between income and subjective well-being. The researchers measured participants' income across time between 1991 and 2006 and observed that both the central tendency and variability of income tended to increase across time. The following annual income scores (in thousands of dollars) are similar to the data observed by Luhmann et al.

1991	2006
8	15
18	13
3	11
8	27
8	5
3	21
13	3
3	23
8	17

	Answer	Possible points
Compute the mean and standard deviation for 1991.	SD=200 mean=8	0.50
Compute the mean and standard deviation for 2006	SD=512 mean=15	0.50
Report these descriptive statistics in APA 7th edition format.		1.00