STATS 250 Lecture Notes - Lecture 13: Confidence Interval, Scatter Plot, Dependent And Independent Variables
49
STATS 250 Full Course Notes
Verified Note
49 documents
Document Summary
Stats 250: introduction to statistics - lecture 13: analysis of variance continued & Details leading to the f statistic are presented in six steps, ending with an anova table. Calculate the mean and variance for each sample : x i and si. Calculate the overall sample mean (using all n = n1 + n2 + + nk observations): x . We wish to compare three drugs for treating a disease. A quantitative response (time to cure in days) is measured such that a smaller value indicates a more favorable response. A total of n = 19 patients are randomly assigned to one of the three drug (treatment) groups. Drug 1: 7. 3, 8. 2, 10. 1, 6. 0, 9. 5. Drug 2: 7. 2, 10. 6, 11. 2, 9. 0, 8. 5, 10. 9, 7. 8. Drug 3: 5. 8, 6. 5, 8. 8, 4. 9, 7. 9, 8. 5, 5. 2. Ha: at least one population mean time to cure ( i) is different. Calculate the mean and variance for each sample.
