INTRODUCTION
Your first SPSS data assignment uses the SPSS grades.sav data file created in Unit 2. You will conduct a
visual inspection of histograms. You will also analyze and interpret important measures of central tendency
and dispersion.
OBJECTIVES
To successfully complete this learning unit, you will be expected to:
Unit 3 Study 1- Readings
Use your IBM SPSS Statistics Step by Step text to complete the following:
• Review “An Introduction to the Example” in Chapter 1. This section provides definitions of SPSS
variables used in your Unit 3 assignment.
• Read Chapter 6, “Frequencies.” This reading addresses the following topics:
◦ Frequencies.
◦ Bar charts.
◦ Histograms.
◦ Percentiles.
• Read Chapter 7, “Descriptive Statistics.” This reading addresses the following topics:
◦ Statistical significance.
◦ The normal distribution.
◦ Mean, median, and mode.
◦ Variance and standard deviation, skewness, and kurtosis.
◦ Maximum, minimum, range, and sum.
◦ Standard error.
Unit 3 Discussion 1 – Data Screening
For this discussion, identify the goals of data screening. Then discuss how you can identify and remedy
the following:
• Errors in data entry.
• Outliers.
• Missing data.