Question: Correlation Application And Interpretation

Data Set Instructions

The grades.sav file is a sample SPSS data set. The fictional data represent a teacher’s recording of student demographics and performance on quizzes and a final exam across three sections of the course. Each section consists of about 35 students (N = 105).

Software Installation

Make sure that IBM SPSS Statistics Standard GradPack is fully licensed, installed on your computer, and running properly. It is important that you have either the Standard or Premium version of SPSS that includes the full range of statistics. Proper software installation is required in order to complete your first SPSS data assignment in Assessment 1.

Next, click grades.sav in the Assessment 1 Resources to download the file to your computer.

  • You will use grades.sav throughout the course.

The definition of variables in the grades.sav data set are found in the Assessment 1 Context. Understanding these variable definitions is necessary for interpreting SPSS output.

In Assessment 1, you will define values and scales of measurement for all variables in your grades.sav file.

Verify the values and scales of measurement assigned in the grades.sav file using information in the Data Set on page 2 of this document.

Data Set

There are 21 variables in grades.sav,. Open your grades.sav file and go to the Variable View tab. Make sure you have the following values and scales of measurement assigned.

SPSS variableDefinitionValuesScale of measurement
idStudent identification number Nominal
lastnameStudent last name Nominal
firstnameStudent first name Nominal
genderStudent gender1 = female; 2 = maleNominal
ethnicityStudent ethnicity1 = Native; 2 = Asian; 3 = Black; 4 = White; 5 = HispanicNominal
yearClass rank1 = freshman; 2 = sophomore; 3 = junior; 4 = seniorScale
lowupLower or upper division1 = lower; 2 = upperOrdinal
sectionClass section Nominal
gpaPrevious grade point average Scale
extcrDid extra credit project?1 = no; 2 = yesNominal
reviewAttended review sessions?1 = no; 2 = yesNominal
quiz1Quiz 1: number of correct answers Scale
quiz2Quiz 2: number of correct answers Scale
quiz3Quiz 3: number of correct answers Scale
quiz4Quiz 4: number of correct answers Scale
quiz5Quiz 5: number of correct answers Scale
finalFinal exam: number of correct answers Scale
totalTotal number of points earned Scale
percentFinal percent Scale
gradeFinal grade Nominal
passfailPassed or failed the course? Nominal

Solution:

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