Book Image

Data Analysis with IBM SPSS Statistics

By : Ken Stehlik-Barry, Anthony Babinec
Book Image

Data Analysis with IBM SPSS Statistics

By: Ken Stehlik-Barry, Anthony Babinec

Overview of this book

SPSS Statistics is a software package used for logical batched and non-batched statistical analysis. Analytical tools such as SPSS can readily provide even a novice user with an overwhelming amount of information and a broad range of options for analyzing patterns in the data. The journey starts with installing and configuring SPSS Statistics for first use and exploring the data to understand its potential (as well as its limitations). Use the right statistical analysis technique such as regression, classification and more, and analyze your data in the best possible manner. Work with graphs and charts to visualize your findings. With this information in hand, the discovery of patterns within the data can be undertaken. Finally, the high level objective of developing predictive models that can be applied to other situations will be addressed. By the end of this book, you will have a firm understanding of the various statistical analysis techniques offered by SPSS Statistics, and be able to master its use for data analysis with ease.
Table of Contents (17 chapters)
4
Dealing with Missing Data and Outliers
10
Crosstabulation Patterns for Categorical Data

Aggregating and Restructuring Data

There are many instances in which the data provided initially needs to be changed before analysis can begin. Chapter 7, Creating New Data Elements, described a variety of SPSS capabilities to create new variables using the transformations commands and Chapter 8, Adding and Matching files, dealt with the capabilities available to match and add files. This chapter builds on what was covered in these two chapters by introducing the use of aggregation to create summary variables by calculating statistics such as the mean, sum, minimum and maximum across a set of cases in the data. This information can be used to add fields for analytical purposes, and the aggregated file itself can be used to conduct investigations using a different unit of analysis.

The key topics that will be addressed in this chapter are as follows:

  • Adding aggregated fields back...