PSY10B-W21-Week-1-Practice-20210106-KEY

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University of California, Santa Barbara **We aren't endorsed by this school
Course
PSY 10B
Subject
Statistics
Date
Sep 1, 2023
Pages
15
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PSY10B Week 1 Practice Sheet Instructions The questions on this sheet are intended to help you practice your calculation skills for important concepts discussed in lecture. You can expect these to be similar to, but not identical to, the kinds of calculations you will be asked to do on the quizzes. Please note: these questions are generated automatically and randomly by R. They are not all hand checked and may contain errors. If you notice any errors, please let Dr. Conroy- Beam know. Challenge question : Consider the following sample of data with one missing value: 7 8 10 10 X 11 12 13 14 15 If the median of this sample is 10.5, what is the mean? Note : this is an intentionally difficult question and will require some creativity to solve. Mean = 11.0
Use the following population of scores for the following questions: 1. What is the mode of this data? 9, 10, 12, 13 2. What is the median of this data? 10 3. What is the mean of this data? 10.5 4. What is the range of this data? 7, 13 5. What is the variance ( σ 2 ) of this data? 3.6785714 6. What is the standard deviation ( σ ) of this data? 1.9179602 Use the following population of scores for the following questions: 1. What is the mode of this data? 9 2. What is the median of this data? 9
3. What is the mean of this data? 9.2857143 4. What is the range of this data? 8, 11 5. What is the variance ( σ 2 ) of this data? 0.7755102 6. What is the standard deviation ( σ ) of this data? 0.8806306 Use the following population of scores for the following questions: 1. What is the mode of this data? 8, 9, 16 2. What is the median of this data? 10 3. What is the mean of this data? 10.6666667 4. What is the range of this data? 4, 17 5. What is the variance ( σ 2 ) of this data? 16.7222222 6. What is the standard deviation ( σ ) of this data? 4.0892814
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