PSY 07202: Statistics in Psychology Assignment 11: SPSS Assignment 2 This assignment is designed to give you practice choosing the appropriate test statistic based on experimental design. You will gain practice calculating the test statistics using SPSS for different research questions that involve comparing means using t-tests. You will need to run the appropriate analysis to test each hypothesis, answer the questions posed, and write a conclusion in APA format stating whether or not the samples were significantly different. For APA format, please make sure to include the M & SD of the group(s), and the statistical string associated with it [e.g. t(df)=t statistic, p<.05 or p>.05]. You can find examples of APA format sentences at the end of each t-test chapter (Chapters 8 & 9). To run all t-tests, click ANALYZE, COMPARE MEANS, and then choose the type you would like to run (please see \"t-Test in SPSS Instruction\" PPT for detailed instructions located in the Modules section). Make sure to answer every part of the questions, typing your answers directly into this file. Additionally, paste the appropriate tables from the SPSS output into your assignment. Please submit the completed assignment to Assignment 11 labeled as lastname_Assignment11 as a .doc, .docx, or .pdf file. For all questions, you will use the existing data filed labeled HSdata.sav located in the Modules section. This data file contains 200 observations from a sample of high school students from NY State with demographic information and a number of scores on standardized tests. Look in the variable view at the description of each variable to get yourself familiar with what the variables are measuring. Study #1: It is a commonly held belief that males perform better in math compared to females. You are interested in determining whether there is a significant difference between males and females in their standardized math test scores. Answer the following questions: What is the proper t-test statistic for this design? Identify the (quasi)independent variable. Identify the dependent variable. State the null hypothesis. State the alternative hypothesis. Perform the proper t-test using SPSS and print the output. On your output, circle or highlight the t-value, mean difference, est. standard error, and use these to type out the appropriate t formula (that you learned in class). Make sure to substitute all of the parts of the t formula for the numbers given in the output. Can we assume the variances are equal based on Levene's test? Why or why not? Write a sentence or two below describing the results of this study in APA style. Make sure to include the sample means and standard deviations. 1 Study #2: You would like to see whether students' test grades change between freshman and senior year. Test whether or not there is a significant difference in science scores between these two time points. What is the proper t-test statistic for this design? Identify the (quasi)independent variable Identify the dependent variable State the null hypothesis State the alternative hypothesis Perform the proper t-test using SPSS and print the output. Circle or highlight the t-value, mean difference, and standard error and use these to type out the appropriate t equation (that you learned in class). Make sure to substitute all of the parts of the t formula for the numbers given in the output. Write a sentence or two about your results using APA style. Make sure to include the mean and standard deviation of the difference scores. Study 3: You are interested in seeing if your sample of students performed better on the standardized reading test compared to the population of students from the entire state. The state population mean on this exam is 53. What is the proper t-test statistic for this design? Identify the dependent variable State the null hypothesis State the alternative hypothesis Perform the proper t-test using SPSS. Circle or highlight mean difference, t-score, and estimated standard error and use this information to type out the appropriate t formula (that you learned in class). Make sure to substitute all of the parts of the t formula for the numbers given in the output. Write a sentence or two describing the results of the statistical test using APA format. Make sure to include the sample mean and standard deviation. 2 $FL2@(#) IBM SPSS STATISTICS DATA FILE MS Windows 19.0.0 #### ####################Y@28 Jun 1215:32:06 #################### ### ##ID ################# ####Gender ################# ### ##GENDER ### ##RACE ###Ethinicy/Race ################# ### ##SES ####Social Economic Status ################# ### ##SCHTYP ####type of school ################# ### ##PROG ####type of program ################# ### ##READ ###reading score ################# ### ##WRITE ###writing score ################# ### ##MATH ###math score ################# ### ##SOCST ####social studies score################# ### ##SCIENCEF####freshman yr science score ########################SCIENCES####senior yr science score #################male ######?#female ##########################?#hispanic #######@#asian #######@ african-amer #######@#white ##########################?#low #######@#middle #######@#high ##########################?#public #######@#private##########################?#general#######@#academic #######@#vocation ########################################################################## ############$################################################# ################################################################################ ################################ID=id GENDER=gender RACE=race SES=ses SCHTYP=schtyp PROG=prog READ=read WRITE=write MATH=math SOCST=socst SCIENCEF=sciencefresh SCIENCES=sciencesen##############################################id: $@Role('0' )/gender:$@Role('0' )/race:$@Role('0' )/ses:$@Role('0' )/schtyp:$@Role('0' )/prog:$@Role('0' )/read:$@Role('0' )/write:$@Role('0' )/math:$@Role('0' )/socst:$@Role('0' )/sciencefresh:$@Role('0' )/sciencesen:$@Role('0' )############ ###windows1252#######dheeedgeefdheeedfeeetdeeegdgeee dheee##### e@dheegdheeedheeg~dheefideeefdheeg##### d@gdeeefdheeedhf#####e@efdhfefdgfeeodefef dhfeedgfefdhfegdhfefdhfeedhfee##### d@dhfegdgfefpdefegdgfegdhfeedhfegd hf##### c@egdhfef######e@dhfefkdefefdffefydefeed hfefzdefegmdefegdhfeedhfeg~dhfef#####`e@vd efegdhfee#####`c@dhfefdhfee#####c@dhfegdhfeg #####d@dhfegdhfeg| dffefdhffe#####`h@dhf#####@f@fgdhfff######i@dhf##### #f@ffdhfff##### f@dhf#####g@ffdhfff#####f@dhf##### g@ffdhfff#####f@dhf#####e@ffdhgeedhgegdhgef dhgefdhgefdhgefxdegefdhg#####@c@efdhgef dhgeedhgefdhgeedggegdhgefsdegeg~d hg#####@e@efdhgefdhg#####c@efdhgeerdegefdhgef dhgefdhgefdhgegdhgefdhg#####h@ffdhgff ######h@dhg#####h@ffdhgff#####h@leeeefeheeee he#####e@eeeeeeegegeef  eheeg heeeefeheefe he#####`d@efegeegegeegegeeg~| efeefeheefweeeeejeeeefegeefegeefeheef eheef##### d@eheegeheeeeheegeheeeegeeeeheefe heee{efeefegeefeheegegefeeeefeehfeg ehfefehf#####d@efehfefehf#####@d@egehfege hfeeehfefehfegehfefeffeeehfefehfeg ehfegegfegfeefegehfegueefefehfefehfeg ehfegneefeeehfeeehfefehfegehfege hfeeehfefehfefehfef#####c@qeefegehfefe hfefehfefehf######d@efehfee#####c@}effeeehfeg ehfeeehfff#####g@egfffehfff#####f@ehf#####@ g@ffehfff##### h@ehf######g@fgehfff#####`f@efffeehffe#####`g@e hgefehgefehgefehgeeehgefehgefehgef ehgeeehgefehgef######c@ehgegehgefehgef ehgefeggefeggee| ~efgefehgegehgeeefgegefgef~ehgefehg#### #@h@ffehgff#####f@eegffehgff#####g@ehg#####h@ff ehgff#####g@ehg#####e@fe