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PSYCH/625 Version 2 Week Five University of Phoenix Material - Document preview page 1

PSYCH/625 Version 2 Week Five University of Phoenix Material - Page 1

Document preview content for PSYCH/625 Version 2 Week Five University of Phoenix Material

PSYCH/625 Version 2 Week Five University of Phoenix Material

Advanced psychological assessment and research methods

Benjamin Fisher
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PSYCH/625 Version 2 Week Five University of Phoenix Material - Page 1 preview imageTime to Practice–Week FivePSYCH/625 Version21Copyright ©2014by University of Phoenix. All rights reserved.7PSYCH/625 Version 2Week FiveUniversity of Phoenix MaterialTime to Practice–Week FiveCompleteParts A, B, and C below.Part ASome questions in Part A require that you access data fromStatistics for PeopleWho (ThinkThey) Hate Statistics.This data is available on the student websiteunder the Student Text Resources link.1.Use the following data to answer Questions 1a and 1b.Total no. ofproblems correct(out of a possible20)Attitude toward testtaking (out of apossible 100)1794137312591580169314851666167918771991
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PSYCH/625 Version 2 Week Five University of Phoenix Material - Page 2 preview image
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PSYCH/625 Version 2 Week Five University of Phoenix Material - Page 3 preview imageTime to Practice–Week FivePSYCH/625 Version22Copyright ©2014by University of Phoenix. All rights reserved.a.Compute the Pearson product-moment correlation coefficient by hand andshow all your work.XY(Xi-Xbar)(Yi-Ybar)(Xi-Xbar)^2(Yi-Ybar)^2(Xi-Xbar)*(Yi-Ybar)17941.414.31.96204.4920.021373-2.6-6.76.7644.8917.421259-3.6-20.712.96428.4974.521580-0.60.30.360.09-0.1816930.413.30.16176.895.321485-1.65.32.5628.09-8.4816660.4-13.70.16187.69-5.4816790.4-0.70.160.49-0.2818772.4-2.75.767.29-6.4819913.411.311.56127.6938.42Sum1567973.55271E-15-2.84217E-1442.41206.1134.8Average15.679.73.55271E-16-2.84217E-154.24120.6113.48=134.8/SQRT(42.4*1206.1)= 0.596
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PSYCH/625 Version 2 Week Five University of Phoenix Material - Page 4 preview imageTime to Practice–Week FivePSYCH/625 Version23Copyright ©2014by University of Phoenix. All rights reserved.b.Constructascatterplotforthese10valuesbyhand.Basedonthescatterplot, would you predict the correlation to be direct or indirect?Why?Clearly an upward trend is observed between X and Y implying that there isa positive linear relationship between X and Y. that is as the value of Xincreases, the value of Y also increases. Thus there is adirect correlationbetween X and Y.
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PSYCH/625 Version 2 Week Five University of Phoenix Material - Page 5 preview imageTime to Practice–Week FivePSYCH/625 Version24Copyright ©2014by University of Phoenix. All rights reserved.2.Rank the following correlation coefficients on strength of their relationship (listthe weakest first):+.71+.36–.45.47–.62Rankedcorrelation coefficients on strength of their relationshipis shownbelow.-0.62,-0.45, +0.36, +0.47. +0.713.Use IBM®SPSS®software to determine the correlation between hours ofstudying and grade point average for these honor students. Why is thecorrelation so low?Hours ofstudyingGPA233.95123.90154.00143.76163.97213.89143.66113.91
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PSYCH/625 Version 2 Week Five University of Phoenix Material - Page 6 preview imageTime to Practice–Week FivePSYCH/625 Version25Copyright ©2014by University of Phoenix. All rights reserved.183.8093.89Correlationshours_studyinggpahours_studyingPearsonCorrelation1.144Sig. (2-tailed).691N1010gpaPearsonCorrelation.1441Sig. (2-tailed).691N1010Correlation coefficient = 0.144. This implies there is no correlation betweenhours of studying and GPA. That is number of hours does not depend onGPA.
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Document Details

University
University of Phoenix
Course
PSYCH 625
Subject
Psychology

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