avr (alias: avg)

The arithmetic mean function is implemented in two versions.

---

Usage 1

avr(x)

x

a scalar, vector or matrix

Result 1

The result is the arithmetic mean of all elements of x

---

Usage 2

avr(x, flag)

x

a matrix

flag

selects if the average of the column vectors (flag==0) or the row vectors (flag!=0) is requsted; flag must be a scalar

Result 2

• if flag equals 0: the result r is the vector of the column averages

r[i] = eval avr( x[*,i]) // i = 0 .. ncol(x)-1

• otherwise: the result r is the vector of the row averages

r[i] = eval avr( x[i,*]) // i = 0 .. nrow(x)-1

---

See also

median, var, dev, corr, sum, hist,

<function list>