Overview Applying what you learned from the readings, discussions, and Aspects of Reliability and Validity [PDF], in this assignment, you will: Calculate the Cronbach’s alpha using JASP. Explain if the calculated Cronbach’s alpha is an acceptable value. By successfully completing this assignment, you will demonstrate your proficiency in the following course competencies: Evaluate the reliability and validity of a measurement instrument for a given set of research questions or hypotheses. Communicate quantitative methodologies, results, analysis, and conclusions effectively. Step 1: Compute the Cronbach’s Alpha in JASP Open the .sav file you created for the Unit 1 assignment from the 23-item questionnaire. Assume it is an instrument to measure a latent construct, statistics anxiety. Conducting the Reliability Analysis. View the JASP Tutorial: Reliability Analysis [Video]. Open JASP. Select the “Show Module Menu” button. Select the “Reliability” module. Select “Reliability and “Unidimensional reliability.” Select your survey items and move them over into the “Variables” box. Under “Analysis,” select the following options: Under “Scale Statistic,” select: Confidence Interval (95%). Cronbach’s alpha. Average interitem correlation. Mean (of participants’’ mean scores). SD (of participants’ mean scores). Under “Individual Item Statistics,” select: Item-rest correlation. Mean. Standard deviation. Step 2: Analyze and Report the Reliability Results Analyze the Cronbach’s alpha that you computed and determine if it is an acceptable value for business and technology research. Provide your rationale for your decision and support your analysis and decision with solid references (such as Field, 2018, pages 601–608). Create a Word document including a cover page with your name, your analysis, and a references page. Step 3: Assess Validity Using the journal article that you analyzed for the Unit 2 discussion, identify and assess the confirmatory factor analysis “goodness of fit” results for the instrument. Based on the populations used in the previous studies where the instrument was used and validated, determine whether you would need a pilot to test the instrument with your potential applied business research population. Justify your decision and provide supporting references as appropriate. Step 4: Submit Both Parts of the Assignment Review the assignment scoring guide to ensure that you have met all criteria. Save your report as YourLastName_U2.doc and submit it along with YourLastName_U2.jasp to the Unit 2 assignment.
