Analysis of normality. A picture is worth a thousand words.
DOI:
https://doi.org/10.30445/rear.v14i12.1093Keywords:
normal distribution, Shapiro-Wilk, Kolmogorov-Smirnov, histogram, box plot, quantiles graphAbstract
Before using a parametric contrast test, we must verify that the variable follows a normal distribution. For this check we have three possible strategies: methods based on hypothesis testing, those based on graphical representations and the so-called analytical methods.
References
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