A psychologist conducts a survey of job satisfaction among laborers and white-collar workers using a rating scale on which 1 indicates low satisfaction and 10 indicates high satisfaction.The findings are that laborers have a mean job satisfaction score of 4 and a variance of 1; white-collar workers have a mean job satisfaction score of 7 and a variance of 10.Which statement most completely describes the meaning of these numbers?
A)White-collar workers are more satisfied than laborers.
B)White-collar workers and laborers are about equally satisfied.
C)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.
D)Laborers are less satisfied than white-collar workers,and most laborers are about equally dissatisfied,while there is more variation in the satisfaction of white-collar workers.

Question

Quizplus · Accepted Answer

The mean job satisfaction score of laborers is lower than that of white-collar workers,and the variance of laborers' job satisfaction scores is smaller than that of white-collar workers.This indicates that there is less variation in the job satisfaction of laborers, and most laborers are about equally dissatisfied with their jobs.White-collar workers, on the other hand, show greater variation in job satisfaction scores.

A Psychologist Conducts a Survey of Job Satisfaction Among Laborers