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.
Wrong, KoolAid hairdye should last up to about a couple months depending on how long u leave in the koolaid, conditioner, and â¦water mixture in for... i have heard a wide variety of times such as 5, 20, 30 minutes and from there up 2 ten hours... it depends on how bright and vibrant u want ur colours to be.