PSYC 3000 Statistics

Assignment # 2PSYC 3000 Due: Mon.Jan.11(2021)Inferential StatisticsFor this assignment you will be using the following data files:QStudyAssn2a.savand QStudyAssn2b.sav. Thesefilescontains data for 332participants who responded to a number of questionnaires online that included the Attention to Detail subscale of the Autism Spectrum Quotient (e.g., “I notice patterns in things all the time”) and the Social Desirability Scale (e.g., “I’m always willing to admit when I make a mistake”). 1. T-Test for Independent Groups: Do males and females differ?To open the file in SPSS, start the program. Locate thefile in ‘Recent Files’ or click on ‘Open another File’ and browse the computer to find the “QstudyAssn2a.sav” file (then click on it). If the data itself is not visible when this file opens up, you will need to click on ‘Data View’ (located at the bottom left of the SPSS Window).The first set of analyses will involve determining whether the mean scores for these two variables differ for males and females. Step 1. Label the values in the grouping variablesby using the ‘Values’ column in the ‘Variable View’ Window(to get to this Window see bottom left of thescreen).For the variable Genderclick on theValues boxandthen on the .... For eachgender group,enter the ‘Value’ (i.e., 1 or 2), enter the ‘Label’ (i.e., Male for 1 and Female for 2) and then click ‘Add’.Thenclick ‘OK’.Step 2. From the ‘Analyze’ menu, choose the ‘Compare Means’ option then the ‘Independent-Samples T Test...’ option.DesignatebothAQAttDetand SDSTot”as the ‘Test Variable(s)’ and “Gender” as the ‘Grouping Variable’.Next, you will have to tell SPSS how your groups are defined in the Gendervariable. To do so, click on ‘Define Groups’. In the ‘Group 1’ box, put 1 and in the ‘Group 2’ box, put 2. Then click on the‘Continue’ button.Click on ‘OK’.Use the output to answer the questions below. Questions(for Part 1)(i) For each response variable (i.e., Attentionto Detail and Social Desirability), report the number of individuals in each group (which might differ slightly for each variable due to missing values) along with the sample meansand sample standard deviationsfor each group(ii) For each response variable, is it safe to use the “equal variances” version of the t-test andwhy or why not? (iii) For each response variable, report the value of the mean difference between the two groups and its standard error(for the version of the test that is consistent with the previous part ii).(iv) For each response variable, report the results of the t-test (i.e., the value of t, the degrees of freedom, and the P-value).In addition, for each test, show how the value for the degrees of freedom was obtained.(v) Given a 2-tailed significance level of .05, what conclusion can be madefor eachtest(please be completeby referring to the groups and variables themselves here)