HSCI 410 Study Guide - Quiz Guide: Confidence Interval, Regression Analysis, Lumbar Vertebrae

• School: Simon Fraser University
• Department: Health Sciences
• Course: HSCI 410

Document Summary

Activity sheet #6: high cholesterol is a level greater than 240mg/dl. Error z value pr(>|z|) (intercept) -2. 511519948 0. 350086957 -7. 173989 7. 284352e-13. Now dichotomize cholesterol (high/low), and summarize the relationship between high cholesterol and odds of heart disease. Error z value pr(>|z|) (intercept) -1. 3783262 0. 08139002 -16. 934831 2. 490734e-64 highcholtrue 0. 3524733 0. 11456125 3. 076723 2. 092895e-03. Answer: _______________________: complete the following using the boneden data. The boneden data consists of 21 pairs of monozygotic twins, and 20 pairs of dizogotic twins. 2a) demonstrate that the heights of monozygotic twins are more highly correlated (more similar) among monozygotic twins than among dizygotic twins. > cor. test(wt1[zyg==1], wt2[zyg==1]) data: wt1[zyg == 1] and wt2[zyg == 1] t = 3. 4703, df = 19, p-value = 0. 002562 alternative hypothesis: true correlation is not equal to 0. > cor. test(wt1[zyg==2], wt2[zyg==2]) data: wt1[zyg == 2] and wt2[zyg == 2] t = 0. 58686, df = 18, p-value = 0. 5646 alternative hypothesis: true correlation is not equal to 0.