Sharp EL9900C EL-9900C - Page 188

Chapter 10: Statistics & Regression Calculations 03 InvNorm( InvNorm(probability [, mean, standard deviation]) Finds the value of x of a given normal distribution probability. A list cannot be used. * When mean (µ) and standard deviation (σ) are omitted, µ = 0 and σ = 1 are applied. Example Find the value of x for the probability of 0.8 in the above sample. 04 pdfT( pdfT(value, degree of freedom) Finds the probability density of a specified value x for the T distribution with n degrees of freedom. A list cannot be used. Limitations: Degree of freedom ≤ 140 • Degrees of freedom is a positive real number. If decimal values are used for the degrees of freedom, the calculator uses the closest integer of the given degree of freedom. • An error may occur when an extremely large number is entered for degree of freedom. Example Find the probability density of the T distribution with 9 degrees of freedom when x = 2.5. 178