AMS 5 Chapter Notes - Chapter 9: Hiram Johnson, Longitudinal Study, Dependent And Independent Variables

• School: UCSC
• Department: Applied Math and Statistics
• Course: AMS 5
• Professor: Yonatan Katznelson

Document Summary

Chapter 9, #2, 3, 4, 7, 8, 10, 11. If the correlation coefficient is -0. 80, below-average values of the dependent variable are associated with below-average values of the independent variable. (b) If y is usually less than x, the correlation coefficient between x and y will be negative. True; the negative simply means a correlation with a negative slope, not that there isn"t a correlation at all. False; x > y gets you a positive sloped line, which also gives you a positive correlation coefficient. In each case, say which correlation is higher, and explain briefly. (data is from a longitudinal study of growth. ) (a) (b) (c) Height at age 4 and height at age 18, height at age 16 and height at age 18. Height at age 4 and height at age 18, weight at age 4 and weight at age 18. Height and weight at age 4, height and weight at age 18.