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- STATS 2 MENU ITEMS
-
- DISTRIBUTIONS
- This set of items calculates probabilities for the given
- distribution based upon values which you input in response to
- questions. No data variables are used.
-
- -T-Tests
- There are three T-tests available. Test 1 calculates the chance
- that a given variable has a certain mean. You are asked to choose
- a variable and to specify a mean to test.
- The second test checks the chance that two variables have the same
- mean. You have to select two variables. The two variables should
- be randomly selected and unrelated.
- The third T test is designed for two variables which are related.
- Once again you simply select two variables.
-
- -Multivariate
- There are two somewhat similar procedures: Factor analysis and
- Discriminant analysis. For factor analysis, you first select the
- variables which you want in the study. You must then select the
- type of rotation desired. If you choose an orthoblique rotation,
- then an orthoblique factor must be entered. The orthoblique factor
- must be from 0 to 0.5. In discriminant analysis, you must first
- select the independent variables. You next choose the dependent
- variable. In both procedures the data entry screen is used to
- display results. No text input can be made, but all menu functions
- and arrows work.
-
- -ANOVA
- The Analysis of Variance section allows for flexibility in data
- structure. The one-way studies all require that the data be set up
- in a traditional ANOVA matrix structure. Questions will not be
- asked for the random, blocked, or latin square designs. For
- nested, you will be asked to specify the number of treatments in a
- block. For the 2- and 3-way ANOVA designs, either the data can be
- set up in a matrix (the default), or separate variables can be
- used to represent the levels of the variables. In a 3-way design
- not using matrices, you would be asked for the variable that held
- the results and then, in turn, for the variable containing the level
- information for factors A, B, and C. For data in matrix form, you
- would need to specify the number of levels in A and B. For the 2-
- factor case the input required is similar.
-
- -Variance Tests
- The 1-factor test asks for a variable name and a value to test.
- The value tested is the standard deviation and the program will
- give back the chance of the variable was chosen from a population
- with the given standard deviation. The 2-factor test compares two
- variables to determine the chance that they are both drawn from a
- population with the same standard deviation.
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