Non-probability Sampling Techniques Are Used in Observational Research Designs

Non-probability sampling techniques do not use randomization and are used in observational research designs. http://www.scalelive.com/non-probability-sampling.html #sampling #research #science

Kaplan-Meier is A Form of Survival Analysis

Compare independent groups on the time it takes to have an outcome. http://www.scalelive.com/kaplan-meier.html
#statistics #biostatistics #survival #analysis #data #science #medicine #clinical

Absolute Risk Increase is The Number of People That Have to Be Treated to Cause a Bad Outcome in The Future

Absolute risk increase (ARI) is the negative impact of treatment in a given population. http://www.scalelive.com/absolute-risk-increase.html 
#treatment #medicine #research #clinical #science #epidemiology

Repeated-Measures t-test is Easily Conducted in SPSS

Compare two observations of a continuous outcome across time or within-subjects. http://www.scalelive.com/repeated-measures-t-test.html
#statistics #biostatistics #data #analysis #research #science

A Free Online Dictionary For Research And Statistical Terminology

Access the definitions for a wide spectrum of research and statistical terminology. http://www.scalelive.com/research-and-statistics-dictionary…
#statistics #biostatistics #research #dictionary #science #diagnosis #database #epidemiology #variable #psychometrics #survey

Bonferroni Corrections Are Necessary In Many Research Journals

Bonferroni corrections are used to control for experimentwise error rates when testing multiple hypotheses currently.http://www.scalelive.com/bonferroni.html

#statistics #biostatistics#analysis #data #hypothesis #research #science

Researchers Can Use A Pilot Study To Establish Effect Sizes and Generate Hypotheses

A pilot study is used by researchers to generate hypotheses and when no measure of effect size exists. http://scalelive.com/pilot-study.html … #research

Within-Subjects Statistics Are Powerful Because Each Participant Serves As Their Own Control

Within-subjects statistics are used to assess change across time. http://www.scalelive.com/within-subjects-statistics.html #statistics #biostatistics #data #analysis #research #science

Equivalent Time Sample Design is A Powerful Quasi-Experimental Method

The equivalent time sample design is useful for assessing the efficacy of treatment across multiple "washout" periods.http://www.scalelive.com/equivalent-time-sample-design.html
‪#‎research‬‪#‎science‬ ‪#‎evidence‬ ‪#‎medicine‬ ‪#‎treatment

Construct Validity is The Primary Form of Validity Evidence

All forms of validity evidence fall under construct validity.http://www.scalelive.com/construct-validity.html
‪#‎psychometrics‬ ‪#‎validity‬‪#‎survey‬ ‪#‎research‬ ‪#‎science‬ ‪#‎measurement‬

Kruskal-Wallis is Used When Statistical Assumptions Are Violated for ANOVA

Kruskal-Wallis tests are used when the assumption of homogeneity of variance is violated for ANOVA. http://www.scalelive.com/kruskal-wallis-and-homogeneity-of-…
‪#‎statistics‬ ‪#‎biostatistics‬ ‪#‎spss‬ ‪#‎research‬‪ #‎science‬ ‪#‎data

The Research Hypothesis is A Researcher's Proclamation of Potential Significance

In hypothesis testing, the research hypothesis states that there will be a difference or association between variables of interest. http://www.scalelive.com/research-hypothesis.html
#hypothesis #statistics #research #science #evidencebased

Randomized Controlled Trials Are Considered The "Gold Standard" in Applied Research

Randomized controlled trials are experimental designs that can generate causal effects and evidence of clinical efficacy. http://www.scalelive.com/randomized-controlled-trial.html
 ‪#‎research‬‪ #‎science‬ ‪#‎rct‬ ‪#‎evidence‬ ‪#‎clinical‬ ‪#‎medicine‬

Type II Errors Occur in Hypothesis Testing Due to Small Sample Sizes and Poor Measurement

Type II errors, or false negatives, occur in hypothesis testing due to small sample sizes and limited precision and accuracy in measurement. http://www.scalelive.com/type-ii-error.html
#hypothesis #statistics #research #science #sample