Continuous Outcomes Increase Statistical Power and Decrease The Needed Sample Size

Maximize statistical power by using continuous level outcomes. http://www.scalelive.com/statistical-power-and-continuous-outcomes.html … #statistics #science #research #tutorial

Use Transformations or Non-Parametric Statistics When Normality is Violated

Transform variables or use non-parametric statistics when the normality assumption is violated for independent samples t-test. http://www.scalelive.com/transformations-for-independent-sa…
#statistics

Use and Interpret Multiple Regression in SPSS

Multiple regression is used to predict for continuous outcomes in SPSS. http://www.scalelive.com/multiple-regression.html
#statistics #spss #tutorial

Use and Interpret Chi-square Goodness-of-fit in SPSS

Test observed versus expected proportions using Chi-square Goodness-of-fit in SPSS. http://www.scalelive.com/chi-square-goodness-of-fit.html

#statistics #spss #research #tutorial

Create A Survey In Eight Steps

Create a reliable and valid survey for your research question. http://www.scalelive.com/surveys.html
#survey #research #tutorial

Measure For Outcomes Using Ratio Level Variables in Applied Research

Ratio variables provide measures of both distance and magnitude due to the "true zero." http://www.scalelive.com/ratio-variables.html
#variable#measurement #tutorial #research #science

The Definition of Incidence

Incidence is the number of new cases in a population, moving forward in time. http://www.scalelive.com/incidence.html
#research #epidemiology#incidence #science #tutorial