Confidence votes 260K. Toni Morrison has written 21 books. This includes novels, non-fiction, children's books and regular books. She co-wrote the children's books with her son, Slade Morrison.
That is, RAND() generates random probabilities. Therefore, you can use the NORM.INV function to calculate a random number from a normal distribution, using this formula in Excel 2007 and above... =NORM.INV(RAND(), mean, standard_dev). ...and this formula in Excel 2003...he standard deviation of a sample is a measure of the spread of the sample from its mean. (We're taking about many items in a sample, of course, not just a single item.) In a normal distribution, about 68% of a sample is within one standard deviation of the mean.
Uniform distribution (from http://www.math.wm.edu/Ëleemis/chart/UDR/UDR.html) The shorthand X â¼U(a,b)is used to indicate that the random variable X has the uniform distri-bution with minimum a and maximum b. A uniform random variable X has probability density function f(x)= 1 bâa a <x <b, for ââ<a <b <â. The uniform distribution is used to model a random variable that is equally. likely to occur between a and b. The uniform distribution is central to random variate generation. The uniform distribution would be an appropriate model for the position of the puncture on a ï¬at. tire.