StatisticsLesson 54Free preview
Distribution
This lesson is part of A.I. · All levels
Summary
Distribution describes how the values in a data are distributed. The most famous form is the symmetrical normal distribution (bell curve) around the mean, with extreme values rarely appearing. Many statistical techniques and machine learning assume that data is normally distributed, so identifying it is important in data analysis.
Key points
- The normal distribution is symmetrical around the mean (bell shape).
- About 68% of the data is in the mean ± 1 standard cross-sectional range.
- About 95% of the data is in the mean ± 2 standard cross-sectional range.
- A uniform distribution means that every value has the same odds.
- It produces a normal distributed sample in Python.
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