How should we check the normality of data? and if our sample is normally distributed in scientific medical research
I think you need to read some of the following
Article Normality Tests for Statistical Analysis: A Guide for Non-St...
Article Understanding data for medical statistics
Article An introduction to medical statistics for health care profes...
best luck
Article Univariate description and bivariate statistical inference: ...
Article Descriptive Statistics and Normality Tests for Statistical Data
Article Power Comparisons of Shapiro-Wilk, Kolmogorov-Smirnov, Lilli...
Article Nonparametric statistical tests for the continuous data: The...
Article Comparing the performance of normality tests with ROC analys...
Article Testing experimental data for univariate normality
http://www.uomisan.edu.iq/library/admin/book/16870983829.pdf
http://nusmedicine.nus.edu.sg/mpsu/wp-content/uploads/2016/11/biostat102_resources.pdf
1. Draw a histogram to inspect distribution visually.
2. Perform statistical tests such as Shapiro-Wilk
3. Plot your data against theoretical normally distributed data
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