Introduction to the SPSS Interface

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Browse the codebook - to see the list of variables on which you can do statistics select the “Browse codebook in this window” option and then click “Start”
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Presentation transcript:

Introduction to the SPSS Interface Dr. Mohammed Alahmed Ph.D. in Biostatistics alahmed@ksu.edu.sa (011) 4674108

Contents SPSS interface: How to enter data in SPSS Data view and Variable view How to enter data in SPSS How to import external data into SPSS How to clean and edit data How to get descriptive statistics

SPSS interface Data view Variable view The place to enter data Columns: variables Rows: records Variable view The place to enter variables List of all variables Characteristics of all variables

Enter data in SPSS directly

Example: Hospital-stay data

Columns: variables Rows: cases Under Data View

4. Description of variable 3. Type: numeric or string Enter Variables Click Variable View Type variable name under Name column (AGE). NOTE: Variable name can be 64 bytes long, and the first character must be a letter or one of the characters @, #, or $. Type: Numeric, string, etc. Label: description of variables. 2. Type variable name 4. Description of variable 3. Type: numeric or string 1. Click this Window

Enter variables Based on your code book!

Enter cases

Import data from Excel Select File Open Data Choose Excel as file type Select the file you want to import Then click Open

Open Excel files in SPSS

Save this file as SPSS data Continue Save this file as SPSS data

Clean data after import data files Run cases summaries for all variables Run frequency for qualitative variables and Descriptives for quantitative variables Check outputs to see if you have variables with wrong values. Check missing values and physical surveys if you use paper surveys, and make sure they are real missing. Sometimes, you need to recode string variables into numeric variables

cases summaries

Basic Statistical Analysis Descriptive statistics: Find wrong entries Have basic knowledge about the sample and targeted variables in a study Summarize data.

Qualitative Variables Analyze Descriptive statistics Frequency

Quantitative Variables Analyze Descriptive statistics Descriptives

AGE Box-Plot Histogram

Duration of Stay Histogram Box-Plot