Normal Distribution and z-scores. mean: the average obtained by dividing the sum of the data by the number of data in the set. Given a set of data, {x 1, x 2, x 3, ..., x n }, you can find the mean, , using the following formula: standard deviation: the extent to which data differs from the mean.
Quick Answer. Kool-Aid hair dye hair dye can last for eight to 12 weeks. The intensity of the color depends on several factors such as the natural hair color, the amount of time the hair is soaked with the dye, the amount of dye used and the dyeing method used. Continue Reading.
Unsweetened Kool Aid is a cheap, temporary hair dye that is easy to apply. It doesnât flake off like some spray on hair applications, and it leaves the hair smelling like candy. Darker hair will tend to look more tinted than truly dyed while blonds will have a more vivid color.