The Utility of Face Validity Evidence in Psychometrics

Face validity is the weakest form of empirical evidence for surveys. http://www.scalelive.com/face-validity.html #psychometrics #validity #survey

Random Selection Is Necessary When Conducting An Experimental Design in Applied Research

Random selection is a necessary component of conducting an experimental design. http://www.scalelive.com/random-selection.html
‪#‎randomization‬ ‪#‎experiment‬ ‪#‎research‬ ‪#‎science‬ ‪#‎medicine‬

Use Principal Components Analysis to Reduce Survey Data Into Content Areas and Account for The Most Possible Variance

Principal Components Analysis (PCA) reduces survey data into pertinent content areas and accounts for the most variance possible. http://www.scalelive.com/principal-components-analysis.html #statistics #psychometrics #research #survey #science

Calculate Sample Size for ANOVA in G*Power

Calculate the needed sample size for ANOVA in G*Power. http://www.scalelive.com/sample-size-for-anova.html … #statistics #research #samplesize

Check the Assumption of Normality When Using ANOVA in SPSS

Normality is a necessary assumption when using ANOVA in SPSS. http://www.scalelive.com/normality-and-anova.html #statistics #spss #anova #normality #research #analysis #analytics #science

Multivariate Designs Are Needed in the Empirical Literature: Be Ready for Larger Sample Sizes and Decreased Statistical Power

Multivariate designs decrease statistical power and increase sample size. http://scalelive.com/statistical-power-and-multivariate-designs.html … #statistics

Research Engineer is the World's First Online Decision Tree for Applied Research and Statistics

Research Engineer helps researchers choose the correct statistics to answer their research questions. http://www.scalelive.com  #statistics

Split-group Validation Increase the Generalizability and Interpretability of Statistical Results

Use split-group validation to strengthen statistical inferences in @IBMSPSS. http://www.scalelive.com/split-group-validation.html … #statistics

Calculate Concurrent Validity Coefficients in SPSS

Concurrent validity is found when a survey correlates with a validated survey given at the same time. http://scalelive.com/concurrent-validity.html … #psychometrics

Measure for Large Effect Sizes to Increase Statistical Power and Decrease the Needed Sample Size

Large effect sizes increase statistical power and decrease sample size. http://scalelive.com/statistical-power-and-large-effect-sizes.html … #statistics

Free Access to a Research and Statistics Dictionary, Maslow's Hierarchy of Needs, and Bloom's Taxonomy

Access a dictionary for research and statistics, Maslow's Hierarchy of Needs, and Bloom's Taxonomy. http://www.scalelive.com/education.html  #education

Check For The Assumption of Normality of Difference Scores When Using Repeated-Measures t-tests in SPSS

Test the assumption of normality of difference scores in @IBMSPSS when using repeated-measures t-test. http://www.scalelive.com/normality-of-difference-scores.html … #statistics

Generate Convergent Validity Evidence For Your Survey Using SPSS

Correlate your survey scores with similar validated surveys to generate convergent validity evidence using @IBMSPSS. http://www.scalelive.com/convergent-validity.html …

Assess Model Fit in Regression Analyses by Plotting Raw Residuals and Expected Outcomes

Residual analysis is used to assess model fit in multivariate regression models. http://www.scalelive.com/residual-analysis.html … #statistics #regression #analytics

Only Researchers Can Make Sure The Statistical Assumption of Independence of Observations is Met

Independence of observations is an important assumption in applied statistics. http://scalelive.com/independence-of-observations.html … #statistics #research #analytics

Test the Robustness of Theoretical Models Using Hierarchical Regression in SPSS

Test theoretical models using hierarchical regression in @IBMSPSS. http://www.scalelive.com/hierarchical-regression.html … #spss #statistics #regression #analytics

Fisher's Exact Test is used rather than Chi-square with Sample Sizes Less Than 20

Conduct and interpret Fisher's Exact Test in @IBMSPSS. http://www.scalelive.com/fishers-exact-test.html … #statistics #spss #analytics #research

Write Instructional Goals and Objectives Using 54 Action Verbs Derived From Bloom's Taxonomy

Use 54 action verbs from Bloom's Taxonomy to write goals and objectives. http://www.scalelive.com/writing-instructional-goals-and-objectives.html … #education #pedagogy #research

Avoid Type III Errors By Running Only Statistical Tests That Answer The Research Question

Type III errors occur when statistics are used to answer the wrong questions. http://scalelive.com/type-iii-error.html … #statistics #analytics #research

Compare Associations Across Different Treatment Conditions Using Cochran-Mantel-Haenszel Tests

Test for conditional independence using Cochran-Mantel-Haenszel analysis in @IBMSPSS. http://www.scalelive.com/cochran-mantel-haenszel.html … #spss #statistics #analytics

Critically Appraise and Apply Systematic Review Evidence Into Clinical Practice

Appraise and apply systematic review evidence in clinical practice. http://www.scalelive.com/appraising-systematic-review-evidence.html … #evidence #evidencebased #EBM #research

Critically Appraise Screening Evidence Using Evidence-Based Medicine Principles

Critically appraise screening evidence before applying it in clinical practice. http://www.scalelive.com/appraising-screening-evidence.html … #evidencebased #research #EBM

Confounding Variables Are Analyzed Using Multivariate Regression Models

Account for confounding variables using multivariate regression models. http://www.scalelive.com/confounding-variables.html … #confounding #research #regression #variable

Conduct Inter-rater Reliability Analysis in SPSS

Inter-rater reliability measures the level of agreement among raters of a performance or behavior. http://scalelive.com/inter-rater-reliability.html … #psychometrics

Use The Correct Types of Variables to Answer Your Research Question

Use different types of variables to answer your research questions. http://www.scalelive.com/types-of-variables.html … #research #variables #outcome #analytics

Always Test the Assumption of Sphericity When Conducting Repeated-measures ANOVA in SPSS

Test the assumption of sphericity when conducting repeated-measures ANOVA in @IBMSPSS. #statistics #spss #analytics #research #anova

Researchers Employ Multivariate Statistics Like MANOVA and MANCOVA to Answer Complex Research Questions

Conduct and interpret multivariate statistics like MANOVA and MANCOVA in @IBMSPSS. http://scalelive.com/multivariate-statistics-for-multiple-outcomes.html … #statistics #spss #analytics