Generate Criterion Validity Evidence For A Survey Instrument

Criterion validity evidence shows that a survey instrument can predict for outcomes. http://www.scalelive.com/criterion-validity.html 
#statistics #psychometrics #validity #survey #research #science #education #tutorial

Interrupted Time Series Design Can Establish Longitudinal Effects

Use an interrupted time series design to answer your research question. http://www.scalelive.com/interrupted-time-series-design.html
#research#science #education #tutorial #medicine

Use FINER and PICO to Write Valid and Answerable Research Questions

Write research questions using the FINER and PICO frameworks. http://www.scalelive.com/research-questions.html #research #science #education #medicine #evidence #tutorial #finer #pico #statistics #psychometrics #epidemiology #database

Calculate Cronbach's alpha in SPSS

Cronbach's alpha is a measure of internal consistency reliability. http://www.scalelive.com/cronbachs-alpha.html #statistics #psychometrics #reliability #science #research #education #tutorial

Bootstrap Validation of Statistical Findings in SPSS

Validate statistical findings using the bootstrap methodology in SPSS. http://www.scalelive.com/bootstrap-validation.html
#statistics #research #science #education #tutorial #spss

Generate Several Types of Validity Evidence Using SPSS

Generate validity evidence for a construct or measure of interest. http://www.scalelive.com/validity.html
#statistics #research #validity#science #education #measurement #tutorial

Within-Subjects Designs Always Increase Statistical Power

Within-subjects designs increase statistical power because participants serve as their own controls. http://www.scalelive.com/statistical-power-and-within-subjects-designs.html

#statistics #research #science #education #tutorial

Categorical Outcomes Greatly Affect Statistical Power in Applied Research

Categorical outcomes decrease statistical power due to a lack of precision and accuracy in measurement. http://www.scalelive.com/statistical-power-and-categorical-outcomes.html
#statistics #research #science #measurement #education #tutorial

Use and Interpret Phi-Coefficient in SPSS

Phi-coefficient is the statistical test used when correlating two categorical variables. http://www.scalelive.com/phi-coefficient.html #statistics #correlation #research #science #education #tutorial #spss

Observational Research Designs Have Utility and Relevance

Observational research designs are very feasible for busy clinicians. http://www.scalelive.com/observational-research-designs.html
#research #science #education #medicine #tutorial

Generate Known-Groups Validity Evidence For Your Survey

Known-groups validity evidence is found when a survey can differentiate between independent groups. http://www.scalelive.com/known-groups-validity.html
#statistics #psychometrics #research #science #validity #education #tutorial

Experimental Research Designs Yield Causal Effects

Experimental research designs can yield causal effects. http://www.scalelive.com/experimental-research-designs.html #research #science #medicine #tutorial #education

Increase the Validity of Statistical Findings Using Bootstrap, Split-Group, or Jack-Knife Methods

Strengthen statistical findings using validation methods like bootstrap, split-group, and jack-knife. http://www.scalelive.com/validation-of-statistical-findings.html
#statistics #research #science #education #tutorial

How is stratified randomization used in experimental research?

Use stratified randomization with an experimental research design. http://www.scalelive.com/stratified-randomization.html #research #science #tutorial

Measures for Predictor Variables in Applied Research

Predictor variables are used to test associations with outcomes. http://www.scalelive.com/predictor-variables.html #statistics #variable #science #research #tutorial #measurement

How does a Type I error occur in statistics?

What is a Type I error in statistics? http://www.scalelive.com/type-i-error.html #statistics #research #science #tutorial