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.
The Standard Normal Distribution. A standard normal distribution is a normal distribution with mean 0 and standard deviation 1. Areas under this curve can be found using a standard normal table (Table A in the Moore and Moore & McCabe textbooks). All introductory statistics texts include this table.Some do format it differently.he Standard Normal Distribution. A standard normal distribution is a normal distribution with mean 0 and standard deviation 1. Areas under this curve can be found using a standard normal table (Table A in the Moore and Moore & McCabe textbooks). All introductory statistics texts include this table.