#statsbasics — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #statsbasics, aggregated by home.social.
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Standard Deviation (SD): Measures how spread out data points are from the mean.
Ex: High SD = scattered data; low SD = points close to mean. Formula: `sqrt(Variance)`.
Pro-Tip: Small SD is often desired in engineering for consistency & quality!
#StatsBasics #DataAnalysis #STEM #StudyNotes -
Alright, future engineers!
**Skewness:** Measures the asymmetry of a probability distribution.
Ex: Right skew = long tail on the right (mean > median).
Pro-Tip: Reveals if data leans one way, crucial for choosing the right average (mean vs. median)!
#DataAnalysis #StatsBasics #STEM #StudyNotes -
**Normal Distribution:** A bell-shaped curve showing how data clusters around the mean.
Ex: Natural phenomena (heights, errors). Z-score: `(X - mean) / SD`.
Pro-Tip: Key for inferential stats! `+/- 1 SD` contains ~68% of data.
#StatsBasics #Probability #STEM #StudyNotes