![]() On the other hand, drill holes can’t be smaller than the drill bit. For example, purity can’t be greater than 100%, which might cause the data to cluster near the upper limit and skew left towards lower values. If a process has a natural limit, data tend to skew away from the limit. For instance, income data are typically right skewed. However, in some areas, you should actually expect nonnormal distributions. You might think of nonnormal data as abnormal. In this post, I show you how to identify the probability distribution of your data. You can picture the symmetric normal distribution, but what about the Weibull or Gamma distributions? This uncertainty might leave you feeling unsettled. Unfortunately, not all data are normally distributed or as intuitive to understand. The normal distribution is that nice, familiar bell-shaped curve. You’re probably familiar with data that follow the normal distribution.
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