What is microblading or microstroking? How is microblade different to hair stroke cosmetic tattoo? Microblading, also known as microstroking, is an advanced brow embroidery technique whereby a superfine row of needles is used to create thin, hair like marks on the skin, which last up to 18 months.
Find the standard deviation of 4, 9, 11, 12, 17, 5, 8, 12, 14. First work out the mean: 10.222. Now, subtract the mean individually from each of the numbers given and square the result. This is equivalent to the (x - )Â² step. x refers to the values given in the question.
The deviations are 3, 2, 1 and zero, which have a sum of 6. If you divide 6 by the number of data points, 4, you get an average deviation of 1.5. Percent Deviation from Mean and Average. The mean and average deviation are used to find the percent deviation. Divide the average deviation by the mean, then multiply by 100.