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Module 4: SPSS Statistics Assignment

Instructions: Please do this assignment in Microsoft Word. Unless specified (i.e. for tables), your answers do not need to be in APA format. Make sure it is clear which question you are addressing and that the formatting is neat and organized.. In order to do this assignment, you will need to access the ECLSK Abridged Course Dataset. It is located in the “Dataset” module. Please open the dataset, create a new syntax file where you can save your work or add to the syntax file you created for the Module 2/Module 3 assignment. You will want to save the syntax for the analyses you run so you can make changes and build upon this work in future assignments.

For this assignment we will be using a set of 17 questions that were asked of child’s teacher at the end of kindergarten about the child’s skills. We will use these to run factor analysis and reliability in order to create one or more scales. Each individual variable is a teacher’s rating in the areas of literacy, or math. Teachers rated students as 1=Not yet, 2=Beginning, 3=In Progress, 4=Intermediate, 5=Proficient. Students who were rated as 6=non-applicable were recoded to have a score of 1. I already did the recoding in this dataset. These are ordinal variables that we will treat as continuous.

Factor Analysis

For this assignment we will be using the 17 variables below: Take a look at these items in the questionnaire Links to an external site.to see how they were asked. Examine these variables in SPSS. Take a look in variable view. Run the appropriate descriptive statistics (frequenices/percents, or mean and SD) on them. Note: These variables have a T2 at the beginning indicating they are teacher report from wave 2 of data collection (spring of kindergarten). Make sure you use this version and NOT T1.

T2CMPSEN

T2STORY

T2LETTER

T2PRDCT

T2READS

T2USEST

T2WRITE

T2CMPST

T2PRINT

T2SORTS

T2ORDER

T2RELAT

T2SOLVE

T2GRAPH

T2MEASU

T2STRAT

T2FRACTN

First, conduct an open factor analysis using principal components analysis and a varimax rotation. Paste the output below. How many factors did SPSS extract? How do you know how many factors were extracted?

Next, paste your rotated component matrix here or make your own table. Highlight or use some other method to show which variables load on to each factor. Do you think they make sense? What would you call each factor?

Next, force a 1 factor solution. What are the results? Do all variables load “high” enough on to one factor? How do you know? Paste the output and explain below.

Reliability

Now measure internal reliability for the new scale if you included all 17 variables together. What is the chronbach’s alpha? Is it low, moderate or high? What does it tell us about this new scale?

Scale Creation

Create the new scale as a mean score by creating a new variable that adds up all of the scores and divides them by 17. Make sure you name your variable in a way that makes sense that you could remember. What did you name your variable? Run descriptive statistics on this variable. What is the mean and standard deviation. Create a histogram. Is the variable normally distributed or skewed?

Using the Scale

Now that you have a new scale that is a continuous measure of teacher reported skills at the end of kindergarten, use this variable to run a regression analysis examining whether the number of books a child has in their home is predictive of teacher reported academic skills at the end of kindergarten (your new variable).

Independent Variable: P1CHLDBK (continuous variable)

Dependent Variable: new variable you created (continuous variable)

What type of regression should you use and why? Paste the relevant output tables below.

What are the results? What can you say about the model and the relationship between the independent and dependent variable?

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