H7864-2 Descriptive Statistics

TOPIC: Descriptive Statistics

Your first IBM SPSS assignment includes two sections in which you will do the following:

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

The grades.sav file is a sample SPSS data set. The data represent a teacher’s recording of student demographics and performance on quizzes and a final exam. you will create and describe two histograms and a descriptives table using these data.

Part 1

Create two histograms for visual interpretation using the following variables:

 
SPSS Variable Definition
Lowup Lower division =1; Upper division =2
Final Final exam: number of correct answers

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 nature of the curves.

Part 2

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

 
SPSS Variable Definition
GPA Previous grade point average
Quiz3 Quiz 3: number of correct answers

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.

Competencies Measured

By successfully completing this assignment, you will demonstrate your proficiency in the following course competencies and assignment criteria:

  • Competency 1Analyze the computation, application, strengths, and limitations of various statistical tests.
    • Below the output, provide an accurate interpretation of histograms for lower division and upper division.
    • Below the output, report descriptive statistics and interpret skew and kurtosis values.
  • Competency 5: Apply a statistical program’s procedure to data.
    • Provide histograms for lower division and upper division.
    • Provide a descriptive statistics table.
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