Hello, dear friend, you can consult us at any time if you have any questions, add WeChat: daixieit

PSY202 Winter 2024

Practice 3 Worksheet

Please round all work to four decimal points

Please upload your completed work sheet on Quercus (Module 2, Practice 3)

1. Are there any outliers in the following sample data? Check at ±2.5 SDs

{218,207,211,209,214,228,217,208,202,209, 201,200,203,214,205,205,213, 212,216,208}

2. Discus one way to that outlier could affect your ANOVA output (hint: how does it affect SS between, SS within, and F ratio).

3. Natalia investigated whether a drug could improve quality of sleep inpatients with sleep apnea. The drug’s aim was to reduce   interruptions to breathing while    sleeping. Researchers recruited 21 sleep apnea patients. Patients received either the drug, no drug, or a placebo. The amount of times breathing was interrupted was recorded over an eight- hour  sleep period. Is there evidence the  drug works?  Please  include:  1)  hypothesis,  2) assumptions, 3) SSbetwene, SSwithin, F ratio, and 4) a conclusion.