Sharp EL-5230 - Manual (Page 68)

66
Normal Probability Calculations
• P( t ), Q( t ), and R( t ) will always take positive values, even when t <0,
because these functions follow the same principle used when solving for
an area.
• Values for P( t ), Q( t ), and R( t ) are given to six decimal places.
–
x – x
x σ
t = Standardization conversion formula
Chapter 4: Statistical Calculations