PSYC 1010 Lecture 4: PSYC lecture 4

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Jill Bee Rich

Document Summary

Correlation coef cient: a numerical value that expresses the size and direction of the relationship between two variables. The number tells you the strength of the relationship, the sign tells you if they move together (positive) or away from one another (negative) Ie. negative correlation between age and hair on head. Ie. positive correlation between avg grade on tests and avg on nal (+. 9) No relationship = corr of 0 (ie. weight and grade in psych) Negative cor has downward slant on graph, and pos. has an upward slant. The stronger the relationship, the closer the points are to each other on the graph. Exam ie. which correlation is stronger a) . 8 b)3. 2 c) -. 7) answer: . 8. Hypothesis: life change will be corellated with illness. Study design: survery method at 3 hospotals over 2 mnths with short term patients. Analyze and interpret data: scores on life change scale are corr with scores on illness scale.