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exam1C08 - Exam 1 Summer C 2008 1 U number Psych Stats...

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Exam 1 Summer C 2008 U number_________________________ Psych Stats Summer C 2008 Brannick Exam 1 Instructions: Write your name, U number, and section number on the scantron; bubble them in. Answer any 75 of 80 questions on the exam by bubbling in the best of the four alternatives given. For those questions you wish to omit, bubble in “e.” If you answer all 80, I will choose the last 5 for you, so it is in your interest to pick 5 and bubble in “e”. You keep the questions (test booklet); turn in the scantron. Handy formulas: SD X X z - = A=(z*100)+500 T=(z*10)+50 z=(A-500)/100 z=(T-50)/10 A=10T N X X = N X = μ N X - = 2 ) ( μ σ N X - = 2 2 ) ( μ σ N X X S X - = 2 2 ) ( ; N X X S X - = 2 ) ( 1 ) ( 2 2 - - = N X X s X ; 1 ) ( 2 - - = N X X s X N X X σ σ = ; X X z σ μ - = X s t X CI 05 . % 95 ± = ; X s z X CI 05 . % 95 ± = Tabled values of z, the unit normal. Z Between mean and z Beyond z Z Between mean and z Beyond z 0.00 0.0 50.00 0.90 31.5 18.41 0.10 3.98 46.02 1.00 34.13 15.87 0.20 7.93 42.07 1.10 36.43 13.57 0.30 11.79 38.21 1.20 38.49 11.51 0.40 15.54 34.46 1.30 40.32 09.68 0.50 19.15 30.85 1.40 41.92 08.08 0.60 22.57 27.43 1.50 43.32 06.68 0.70 25.80 24.20 1.60 44.52 05.48 0.80 28.81 21.19 1.70 45.54 04.46 1
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Exam 1 Summer C 2008 Chapter 1 Introduction to Statistics and Research 1. The purpose of most research is to study the _______ between variables. a. conditions b. interactions c. relationships d. statistics 2. We use a statistic to summarize a variable for what group? 3. An example of a discrete variables is 4. The difference between statistics and parameters is that 5. Suppose we want to know whether people prefer Moose Tracks to Chunky Monkey ice cream. We grab 40 lucky people and have them taste one ice cream or the other in a blind tasting (20 people per group) and have them rate the flavor on a scale from 1 to 10 where 1 is bad and 10 is good. What is the independent variable in this study? a. Kind of ice cream b. Liking for the food c. Manufacturer d. Rating scale 2
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Exam 1 Summer C 2008 6. For the ice cream study above, what is the dependent variable? 7. For the ice cream study above, who were the participants?
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