Class ED-500 Introduction to Statisties Testl 2: Name Direclon: Pleme cinele the
ID: 3044043 • Letter: C
Question
Class ED-500 Introduction to Statisties Testl 2: Name Direclon: Pleme cinele the alphabet tat describe your fosial courwer to the quarstkons beloe Page 14 24) A researeher notes that the correlation in the group she studies is so large that if there were n relation among people in general, there iI"than s 5% chance of getting her combina " Her correlation is thus: B) statidically insignificant D) curvilincar A) statistically significant C) nonline 25) In the social sciences, a strategy to rule out at least ene direetion of causality is to conduet studies where peeple are measured A) on two diferent variables B) on three different variables C) at their peak level of performanceD) in two different settiags 26) Which of the following is a way for researehers to rale out alternative directions of causality? B) coeduct a cross-sectional sbaly D) both A and C A) conduct a longitadinal stadty C) condact a trae experiment 27) In a true experiment, participants area particular level of a variable and then ane measured en another variable B) randomly assigned to D) measused on A) asled to comment about C) cossidered significant on 28) If researchers were to measure a couples' level of exciting aetivities at one time and then esamine the quality of their marriages several years later (as done by Tsapelas, Arom, & Orbuch, 2009), they would be carrying out a B) longitudinal study D) single case design A) regression analysis C) true experiment 29) Suppose that you want to be able to predict college grades from information about high school grades. In this case, the college grades would be called the B) criterion variable D) causal variable A) predictor variable C) independent variable 30) Suppose that you would like to predict a person's college GPA from the person's SAT score. In this situation, the SAT score is called the: A) predictor variable C) criterion variable B) dependent variable D) positive variable 31) A person's predicted Zscore on the criterion variable is found by multiplying that person's Z score on the predictor variable by a particular number called a A) coefficient of redundancy C) pepportionate reduction in erro B) regression constant D) standardized regression coefficient 32) In prediction with one predictor variable, the optimal number to use for beta (the standardized regression coefficient) is the: A) proportiogate reduction in error C) sum of squared roots B) correlation coefficient D) regression constant suppose you are making predictions about people's poetry ability based on scores on a general writing-ability lest. However, you also happen to have information about their creativity scores when making your predictioas. What is it ealled whea you make a prediction using both pioces of information? A) Ridge regression C) Bivariste regression B) Multiple regression D) Proportion of variance 34) With statistical prediction, the variable being predicled from is called theand the variable being predicted to is called theExplanation / Answer
As you have not asked for an explanation. I am not going for that. Thus, I am providing the answer key of this question paper.
24. A
25. D
26. C
27. B
28. B
29. B
30. A
31. D
32. B
33. C