OCC Psych A280-Statistics

SELECTING THE CORRECT STATISTICAL TEST

(Tutorial Videos Below)

THINGS TO CONSIDER	STEPS
How many variables do you have? How many Independent Variables (IV) How many Dependent Variables (DV) What types of data do you have? Is the IV(s) Continuous or Categorical Is the DV(s) Continuous or Categorical	Based on the number of variables you have, select the Univariate (1 variable), Bivariate (2 variables), or Multivariate (≥3 variables) section below to find your test. Determine the types of measures (i.e., continuous or categorical) your independent variable(s) and dependent variable(s) are to find the correct tests for your data using the grids within the univariate, bivariate, and multivariate sections below. Once you've found the correct test, click the button to view the instructional videos for conducting your test in SPSS or EXCEL.

THINGS TO CONSIDER

STEPS

How many variables do you have?

How many Independent Variables (IV)
How many Dependent Variables (DV)

What types of data do you have?

Is the IV(s) Continuous or Categorical
Is the DV(s) Continuous or Categorical

Based on the number of variables you have, select the Univariate (1 variable), Bivariate (2 variables), or Multivariate (≥3 variables) section below to find your test.
Determine the types of measures (i.e., continuous or categorical) your independent variable(s) and dependent variable(s) are to find the correct tests for your data using the grids within the univariate, bivariate, and multivariate sections below.
Once you've found the correct test, click the button to view the instructional videos for conducting your test in SPSS or EXCEL.

MEASUREMENT REVIEW

INDEPENDENT & DEPENDENT VARIABLES

INDEPENDENT VARIABLES	DEPENDENT VARIABLES
Independent Variable (IV): In an experiment, it is the variable that is intentionally changed (manipulated) or introduced in order to observe its effect on the Dependent Variable Independent Variables also include Person Variables, such as gender, race, ethnicity, personaly traits, etc.	Dependent Variable (DV): In an experiment, it is the effect or event observed and expected to change as a result of the independent variable being applied or changed.

CONTINUOUS & CATEGORICAL MEASUREMENTS

CONTINUOUS MEASURES	CATEGORICAL MEASURES
Sometimes called quantitative variables. Called Scale data in SPSS. Interval variables that can be measured along a continuum and they have a numerical value. Intelligence Aptitude Temperature Ratio variables are interval variables, but with the added condition that 0 (zero) of the measurement indicates that there is none of that variable. Income Weight Age	Sometimes called qualitative, discrete, or dichotomous variables. Called Ordinal and Nominal data in SPSS. Ordinal data that has a distinct order. There’s a meaning to the order. Two, Three, And Four Star Restaurants Ranking TV Programs By Popularity 1st, 2nd, 3rd Place Winners! Nominal data are distinct groups with no meaning to the order. Gender States Colors

CONTINUOUS MEASURES

CATEGORICAL MEASURES

Sometimes called quantitative variables. Called Scale data in SPSS.

Interval variables that can be measured along a continuum and they have a numerical value.

Intelligence
Aptitude
Temperature

Ratio variables are interval variables, but with the added condition that 0 (zero) of the measurement indicates that there is none of that variable.

Income
Weight
Age

Sometimes called qualitative, discrete, or dichotomous variables. Called Ordinal and Nominal data in SPSS.

Ordinal data that has a distinct order. There’s a meaning to the order.

Two, Three, And Four Star Restaurants
Ranking TV Programs By Popularity
1st, 2nd, 3rd Place Winners!

Nominal data are distinct groups with no meaning to the order.

Gender
States
Colors

TUTORIAL VIDEOS

PREPARING YOUR DATA IN SPSS

Introduction to the SPSS Interface

How to Create Variables in SPSS

Import, Export & Save: Excel, CSV, Text in SPSS

Select Cases in SPSS

Split File in SPSS

Recode Variables in SPSS

Compute Variables in SPSS

APA Formatting Tips for Tables with SPSS

UNIVARIATE ANALYSIS (One Variable)

VARIABLE TYPE	SPSS	EXCEL
Categorical
Categorical
Continuous
Continuous

BIVARIATE ANALYSIS (Two Variables)

IV	DV	SPSS	EXCEL
Continuous	Continuous
Categorical (≥ 2 groups)	Categorical (≥ 2 groups)
Categorical (2 groups)	Continuous
Categorical (1 group 2 conditions)	Continuous
Categorical (≥ 3 groups)	Continuous
1 Group	Continuous (≥ 3 conditions)

MULTIVARIATE ANALYSIS (Three or More Variables)

IV 1	IV 2	DV
Continuous	Continuous	Continuous
Continuous (≥ 2)		Continuous
Continuous (≥ 3)
Continuous	Continuous or Categorical	Continuous
Continuous	Continuous or Categorical	Continuous
Continuous (≥ 1)	Categorical (≥ 1)	Categorical (2 groups)
Continuous (≥ 1)	Categorical (≥ 1)	Categorical (≥ 3 groups)
Categorical	Categorical	Categorical
Categorical	Categorical	Continuous
Categorical	Categorical	Continuous
Categorical	Categorical or Continuous	Continuous
Categorical (≥ 1)	Categorical (optional)	Continuous (≥ 2)
Categorical (≥ 1)	Categorical (optional)	Continuous (≥ 2)

Research Methods in Experimental Psychology

STATISTICS