PSYCH339 Lecture Notes - Lecture 2: Standard Deviation, Job Satisfaction, Job Performance

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH339
• Professor: James Beck

Document Summary

Variance: not everyone is the same (job performance, job satisfaction) Without variance, there is no personnel psychology, or psychology, or science. Prof will often use these terms interchangeably. Both earned 75% of the maximum points available. The distance is the same but there is no true zero (jnterval scales) If student a is plus one sd, then student a is better than 84% of other people. Student b is better than 93% of other people. Without variance, personnel psychology simply doesn"t work, but ample variance is not enough in and of itself. Amount of variance in one variable than can be explained by variance in another variable. Degree to which rank order in one variable corresponds to rank order in another. Correlation: 1 the list is positively sorted, 0. 7 weaker list than 1. A correlated with b does not mean a causes b.