next up previous contents index
Next: FTEST Up: A Function Reference Previous: FRAC

FREQUENCY

 

Syntax: @FREQUENCY(R, B)

R = a range of values on which frequencies will be counted
B = a range of intervals used to group values in R

@FREQUENCY returns a frequency distribution for a set of values R with a set of intervals B. The array returned is defined as follows:

Let x := x[1] ... x[m]
Let y := y[1] ... y[n]

@FREQUENCY(x, y) := number of elements of x s.t. x[i] < y[1]
number of elements of x s.t. y[1] <= x[i] < y[2]
...
number of elements of x s.t. y[n-1] <= x[i] < y[n]
number of elements of x s.t. y[n] <= x[i]

Example:

@FREQUENCY(A1..A8, B1..B2) = 3, 3, 2 where A1..A8 = 70, 79, 80, 61, 83, 93, 88, 97 and B1..B2 = 80, 90


next up previous contents index
Next: FTEST Up: A Function Reference Previous: FRAC

NExS User's Guide, Version 1.4.5
Grey Trout Software
11 April 1999