Question

QUESTION 5

The average amount by which scores in a sample differ from the mean is given (approximately) by:

		range
		variance
		mode
		standard deviation

QUESTION 6

Researchers conduct a survey of job satisfaction among laborers and white-collar workers using a rating scale on which 1 indicates lowest satisfaction and 10 indicates highest satisfaction. Laborers have a mean job satisfaction score of 4 and a variance of 1; white-collar workers have a mean job satisfaction rating of 7 and a variance of 10. Which statement most completely describes the meaning of these numbers?

		White-collar workers and laborers are about equally satisfied
		White-collar workers are more satisfied than laborers
		Laborers generally are less satisfied than white-collar workers, but laborers are just as likely to be highly satisfied as white-collar workers are to be highly dissatisfied
		Laborers are less satisfied than white-collar workers, and most laborers report about the same level of satisfaction, while there is more variability in the satisfaction of white-collar workers

Answer 1

Standard deviation

===================================

6) Laborers generally are less satisfied than white-collar workers, but laborers are just as likely to be highly satisfied as white- collar workers are to be highly dissatisfied.

___________________

Laborers have a mean job satisfaction score of 4 and a variance of 1

less variation than white collar

white-collar workers have a mean job satisfaction rating of 7 and a variance of 10.

but mean of white-collar is greater than Laborers