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Figure 6 | Critical Care

Figure 6

From: Statistics review 2: Samples and populations

Figure 6

The distribution of sample means. The shaded area represents the range of values in which 95% of sample means lie. Confidence interval A is calculated from a sample with a mean that lies within this shaded area, and contains the true population mean. Confidence interval B, however, is calculated from a sample with a mean that falls outside the shaded area, and does not contain the population mean. SE = standard error.

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