Gentec-EO MACH 6 - Manual (Page 31)

Mach 6 User’s Manual Revision 2.1 31
The maximum pulse energy in the data set.
Mean
The mean pulse energy in the data set.
Spread
Spread is defined as:
(max - min) / (max + min)
Median
Finds the median value of the pulse energy data by sorting the values of pulse energy and
selecting the middle element(s) of the sorted array.
Standard Deviation
The standard deviation of the pulse energy in the data set. This can be interpreted as the
RMS noise. Standard Deviation and Variance Details:
The VI calculates the output values using the following equations.
n - 1
µ = SUM [Xi / n]
i = 0
Where µ is mean and n is the number of elements in X.
Standard deviation = Q
2
n - 1
Q^2 = SUM [(Xi - µ)^2 /( n - 1) ]
i = 0
Where Q is variance, µ is mean.
Mode
Mode is the most frequently occurring value in a sequence of numbers. For example, if
the input sequence is
X = {0, 1, 3, 3, 4, 4, 4, 5, 5, 7},