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May reduce common statistical errors via SPSS normality guidance; leaves open impact on cardiology research validity.
Statistical errors are common in scientific literature and about 50% of the published articles have at least one error. The assumption of normality needs to be checked for many statistical procedures, namely parametric tests, because their validity depends on it. The aim of this commentary is to overview checking for normality in statistical analysis using SPSS.
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Ghasemi et al. (2012) studied this question.
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