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Figure 6 | BMC Medical Research Methodology

Figure 6

From: Estimating the sample mean and standard deviation from the sample size, median, range and/or interquartile range

Figure 6

Relative errors of the sample standard deviation estimation for non-normal data (log-normal, beta, exponential and Weibull), where the black lines with solid circles represent the method under scenario C 1 , the red lines with solid triangles represent the method under scenario C 2 , and the green lines with empty circles represent the method under scenario C 3 .

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