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Figure 1: Gaussian distribution of data: Data (x) is distributed uniformly around a central value where mean, median and mode coincide. The green arrow reflects one standard deviation (68% data), red arrow reflects two standard deviations (95.4% data) and purple arrow reflects three standard deviations (99.7% data)

Figure 1: Gaussian distribution of data: Data (x) is distributed uniformly around a central value where mean, median and mode coincide. The green arrow reflects one standard deviation (68% data), red arrow reflects two standard deviations (95.4% data) and purple arrow reflects three standard deviations (99.7% data)