Understanding Clinical Trial Design - Research Advocacy Network
Understanding Clinical Trial Design - Research Advocacy Network
Understanding Clinical Trial Design - Research Advocacy Network
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UNDERSTANDING CLINICAL TRIAL DESIGN: A TUTORIAL FOR RESEARCH ADVOCATES<br />
Variability The degree to which a set of outcomes is dispersed or<br />
scattered. Two sets of outcomes with identical means<br />
(averages) may have widely different variances. The usual<br />
measures of variability are the variance and standard<br />
deviation.<br />
Variance Measure of dispersion calculated in samples and used to<br />
estimate population variances. Computationally, the<br />
variance is equal to the average squared deviation from<br />
the mean.<br />
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