I have a dataset and I want to check if the data is normally distributed or not. How can I determine if my data follows a normal distribution or if there are deviations from normality?
Identifying non-normal data is crucial in statistical analysis. A simple histogram can often provide insights into the distribution of a given variable.
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GeishaWhisperTue Dec 24 2024
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SilviaTue Dec 24 2024
By visually inspecting a histogram, one can determine if a variable follows a normal distribution, which resembles a bell curve. This shape indicates that the data is evenly distributed around the mean.
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SilviaTue Dec 24 2024
On the other hand, if the histogram shows a skew, it means that the data is not normally distributed. A skew can be identified by the presence of a longer tail on either the left or right side of the histogram.
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ValentinaTue Dec 24 2024
Besides skewness, a variable may also deviate from a bell shape in other ways. For instance, it might be flat, indicating that the data points are spread out more evenly without a clear peak.