ASU The Frequency Distributions for Categorical & Continuous Variables Analysis

Any statistical software provides you the opportunity to create graphs and visually depict the data and the results of your analyses. This week, you will create several different types of graphs and provide examples of different graphs.

NCU SOE faculty have created two helpful videos to guide you through this assignment. Please see this week’s resources to view the videos.

In this SPSS assignment, you will increase your understanding of graphs and frequency distributions as well as their value when interpreting data. Complete the following steps and include your responses to submit to your professor:

Using the data in Table 1, where the grade is your factor and the score is your outcome variable, open a new SPSS file and enter the data. Then using the graph tab, then legacy dialogs, create the following graphs and include them in your submission.

line graph

1. bar chart

pie chart

1. Table 1
2. Data for Step 1 of Assignment
3. Grade

Score

1

45

2

56

3

49

4

57

5

61

6

72

Discuss which of these graphs (line, bar, pie) present these data better.

Frequency Distributions

The file SPSSExam.sav contains data regarding students’ performance on an SPSS exam. Four variables were measured: exam (first year SPSS exam score as a percentage), computer (measure of computer literacy in percent), lecture (percentage of SPSS lectures attended), and numeracy (a measure of numerical ability out of 15). There is a variable called uni indicating whether the students attended World University, Universe University, Planet University, and Cosmos University.

Create two bar charts: one bar chart with sex (biological sex) in the x-axis and one bar chart with the university on the x-axis. Include these charts in your submission.

Create two frequency distribution tables for sex and university attended. Include these tables in your submission and answer the following questions.

What percentage of the sample is male and female?

What percentage of the sample attended World U, Universe U, Planet U, and Cosmos U?

For computer literacy, numerical ability, and lectures attended create three frequency distribution tables with their respective histograms. Include these tables with your submission and provide the following information.

Computer Literacy

Numeracy

Lectures Attended

Describe the shape of the frequency distributions.

Differentiate between the frequency, percent, valid percent, and cumulative percent columns.

Please discuss when it is appropriate to use a bar chart and when it is appropriate to use a histogram to display data (keep in mind the level of measurement of the variables).