PPT-Confirmatory factor analysis

Hans Baumgartner Penn State University x 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 Whats the structure underlying 28 distinct covariances between 8 observed variables The exploratory factor model. 4Life Center are independent 4Life distributors of 4Life Transfer Factor and other 4Life supplements. At 4Life Center, we offer 4Life Transfer Factor at wholesale prices, so you don’t have to break the bank in order to make great improvements to your health. SPSS. Karl L. Wuensch. Dept. . of Psychology. East Carolina University. What is a Common Factor?. It is an abstraction, a hypothetical construct . that . relates . to at least two of our measurement variables.. STA431: Spring 2013. See last slide for copyright information. Factor Analysis: The Measurement Model. D. 1. D. 8. D. 7. D. 6. D. 5. D. 4. D. 3. D. 2. F. 1. F. 2. Example with 2 factors and 8 observed variables. AnnMaria De Mars, PhD.. The Julia Group & 7 Generation Games . WHY?. Imagine this. What exactly were you planning on doing with that?. Let’s say you have a massive pile of data …. . You Could:. Lua Augustin, Savannah Guo, and Blair Marquardt. Learning Outcomes. To understand. :. What . is factor analysis.. What is its model.. Latent vs. observable variables; examples of each. .. Potential applications of factor analysis. STA431: Spring 2013. See last slide for copyright information. THE TRUTH. (Well, closer to the truth, anyway). Regression-like models are close enough to the truth. Latent variables have unknown expected values and variances.. Strengthening the link between entrepreneurial proclivities and entrepreneurial outcomes. John Pisapia. Florida Atlantic University, USA. Keith Feit. Florida Atlantic University. John Morris. Florida Atlantic University. First, . let’s. . check. . the. . reliability. of . the. . scale. Go. . to. . Analyze. , . Scale. . and. . Reliability. . analysis. Select . the. . items. . and. transfer . them. . into. STA431: Spring . 2015. See last slide for copyright information. Factor Analysis: The Measurement Model. D. 1. D. 8. D. 7. D. 6. D. 5. D. 4. D. 3. D. 2. F. 1. F. 2. Example with 2 factors and 8 observed variables. for the . Tryton. Bifurcation Trial Investigators. Columbia University Medical Center. Cardiovascular Research Foundation. New York City. The TRYTON PIVOTAL: . R. andomized Trial & Confirmatory Study. Dept. of PHS, Division of . Biostats. & . Bioinf. Biostatistics Shares Resource, Hollings Cancer Center. Cancer Control Journal Club. March 3, 2016. Motivating Example. Goals of paper. 1. See if previously defined measurement model of hopelessness in advanced cancer fits this sample. Confirmatory Factor Analysis.. SPSS/AMOS. The WISC, Verbal IQ. INFOrmation. – general knowledge questions. COMPrehension. – of social situations and common concepts. ARITHmetic. SIMILarities. – how are two words similar. VOCABulary. Sex-linked inheritance; almost all patients male. Female carriers may have mild symptoms. Most bleeding into joints, muscles; mucosal and CNS bleeding uncommon. Severity inversely proportional to factor level. variables. Factor Analysis. Form of multiple correlations. Checking for construct validity. Do questions measure the same dimension?. For use between or within a test. Identify items which cluster together.