# DESCRIPTIVE STATISTICS

### DESCRIPTIVE STATISTICS

Your first statistical software assignment includes two sections in which you will do the following:

• Create two histograms.
• Calculate measures of central tendency and dispersion.

This will give you some experience with the data set.

#### Key Details and Instructions

As you work on this assignment, refer to the 7864 Data Set Instructions [PDF] document for information on variables used in this course.

Download the 7864 data set, grades.jasp, which is a sample data set, and save it to your computer. This data file is used in all four papers (Week 2, Week 4, Week 6, & Week 8).

Part 1

Create two histograms for visual interpretation using the following variables:

Create two histograms and paste them into your Word document:

• A histogram for lower division students.
• A histogram for upper division students.

Briefly describe what a visual inspection of this output tells you about the shape of the distributions.

Part 2

Create a descriptives table to assess measures of central tendency and dispersion using the following variables:

Create a descriptives table and paste it into your Word document.

Under the table:

• Report the mean, standard deviation, skewness, and kurtosis for GPA and quiz3.
• Briefly describe what skewness and kurtosis tell you about these data with regard to normality.

Submit both sections of your assignment as an attached Word document.

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