Part I
SPSS is a statistical analysis program that allows:
Goals for this section of the course include:
Note: This is not a statistics course such as Math 207. We will only concentrate on basic statistical concepts.
SPSS has a very nice help utility as part of the application. Let's briefly examine this utility before diving into SPSS.
Part I: Let's go to the Tutorial section entitled "Using the Data Editor" and discuss the following:
Data View versus Variable View
Brand | Name | ServingPerPkg | OzPerPkg | Calories | TotalFatInGrams | SatFatInGrams |
M&M/Mars | Snickers Peanut Butter | 1 | 2 | 310 | 20 | 7 |
Hershey | Cookies 'n Mint | 1 | 1.55 | 230 | 12 | 6 |
Hershey | Cadbury Dairy Milk | 3.5 | 5 | 220 | 12 | 8 |
M&M/Mars | Snickers | 3 | 3.7 | 170 | 8 | 3 |
Charms | Sugar Daddy | 1 | 1.7 | 200 | 2.5 | 2.5 |
Note: Variable names must begin with a letter and cannot contain spaces or any illegal characters. Let's use the following convention for variable namnes: 1) the name begins with a letter and 2) the variable can contain letters, numbers, an underscore, or a period.
Next let's go to "Examining Summary Statistics for Individual Variables"
SPSS contains the following data types:
When doing data analysis, we are interested in two types of summaries:
Statistics is sometimes broken up into two different areas:
In the Descriptive Statistics world, we are concerned about each of the following. Just give a general description of the meaning of each of the following terms:
A paint manufacturer tested two experimental brands of paint over a period of months to determine how long they would last without fading. Here are the results:
Brand A | Brand B |
10 | 25 |
20 | 35 |
60 | 40 |
40 | 45 |
50 | 35 |
30 | 30 |
What do the descriptive statistics tell us about the paint with regard to fading?
Method #1: One way has two variable columns where the first is BrandA and the second is BrandB. Enter the above data and find the asked for information. Save this file as BrandMethod1.sav.
Method #2: The second way has two columns where the first column is a variable called Brand and the second column is called Fading. Create value labels where 1="BrandA" and 2="BrandB". Enter the information and find the asked for information. Save this file as BrandMethod2.sav.
When you have completed exercise 10.4 using Method#1 and Method#2, let me take a look at both answers.