Calculates mean, median, mode, and standard deviation for a data set.
The basic statistics calculator computes the mean, median, mode, range, variance, and standard deviation for a set of numbers.
Mean = Σx / n Median = middle value (sorted list) Mode = most frequent value Range = max − min Variance = Σ(x − mean)² / n (population) Standard deviation = √Variance
Data: 4, 7, 7, 10, 12. Mean = 40/5 = 8. Median = 7. Mode = 7. Range = 8. Variance = ((16+1+1+4+16)/5) = 7.6. SD ≈ 2.76.
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