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ANALYSIS OF CONTINUOUS VARIABLES COMPARING MEANS

ANALYSIS OF CONTINUOUS VARIABLES / 31. CHAPTER SIX. ANALYSIS OF CONTINUOUS VARIABLES : COMPARING MEANS . In the last chapter, we addressed the ANALYSIS of discrete VARIABLES . Much of the statistical ANALYSIS in medical research, however, involves the ANALYSIS of CONTINUOUS VARIABLES (such as cardiac output, blood pressure, and heart rate) which can assume an infinite range of values. As with discrete VARIABLES , the statistical ANALYSIS of CONTINUOUS VARIABLES requires the application of specialized tests. In general, these tests compare the MEANS of two (or more) data sets to determine whether the data sets differ significantly from one another.

Multiple patient groups ANOVA ANOVA Figure 6-1: Analysis of Continuous Variables COMPARING MEANS There are three factors which determine whether an observed sample mean is different from another mean or normal value. First, the larger the difference between the means, the more likely the difference has not occurred by chance.

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