Statistics for Psychology

Statistics for PsychologyTest4

Pleaseanswer allthe followingquestionsusingSPSS.After analyzingyourdata,you areto present(i)yourSPSSresultsand(ii)a typedstatementexplainingyour answer to eachquestion.You are reminded to exit SPSS after entering and analyzing the data for each problem. Restart the software nd enter the data for the next problem on a fresh worksheet. Before you upload each of the documents corresponding to the questions, please make sure you name each document appropriately, for example Q1, Q2,… etc.This test must be completed individually by each enrolled student. Please post your responses to the test before the deadline expires.

1)            A researcherdidanexperiment inwhich, shepresented50 wordstoonegroupof subjectsat therateof2-secsper word;4-secs perwordtoanother group;fora thirdgrouptherate of6-secs perword,and10-secper wordtothelast group. The researcher wasinterested instudyingwhether therateofpresentationsignificantlyinfluencedtherecall of thesewords.Theresearcher recordedthefollowingmeannumber of wordsrecalled:

2sec intervals:

14, 11,13,12,12,10,8, 9,11, 10,13,11,28,22, 15,21,22,14,21, 14, 24,12,21,22,24,23, 23,34,22,

4sec intervals:

22, 14,15,16,16,17,16, 12,22,20,21,13,23, 33,43,12,22,24,33, 22,21,34,44,21,43, 22,21,19, 13

6sec intervals:

22, 21,21,10,11,13,11, 14,12,13,10,10,45, 33,44,45,43,42,23, 45,21,34,22,34,41, 23,22,32, 34

10 sec intervals:

50, 45,49,44,45,43,34, 44,44,45,33,43,43, 32,21,24,25,34,32, 43,34,31,22,32,32, 44,50,45, 47

Determinefrom thesedatawhether therewas astatisticallysignificanteffectofpresentationrateson recall of thewords presented,andifso,what wastheeffect?

2)            A researcherhypothesizedthat imageryinstructionswouldimprovetherecall ofwords.In herexperiment,sherandomlyassignedsomeparticipantstolearn a listof wordswiththeinstructiontouseimagery.Participants in thesecondgroup wereinstructedtolearnthewordswithrotememorization,whereasthethirdgroupuseda combinationof roteandimagerymemorizationstrategies.Thefollowingrepresent thenumber ofwordsrecalledby each of thegroups.

Imagery:

34, 32,11,34,32,29,29, 28,25,27,28,39,35, 32,22,21,22,33,29, 24,32,33,33,22,29, 33, 21

Rote:

12, 12,18,19,20,20,19,18,21,11,13,12,10, 10,11, 11,12,11,12,12, 11,10,12,22,14, 21, 11

Combination

32, 26,17,12,13,16,12, 12,11,10,12,22,14, 21,11,11,10,12,13, 14,23,18,12,11,9, 18, 19

Determine from the data whether imagery instructions were superior as compared to the other strategies.