Fisher FERITSCOPE FMP30 - Page 134

Operator‘s Manual FERITSCOPE
®
FMP30 Page 129
Evaluation
8.2.3 Histogram
A histogram ( Fig. 8-7) will be printed after the final result only if the re-
spective histogram mode has been set up in the service functions
( 10.5.5 ‘Histogram’, beginning on Page 164) and there are least 30
readings stored in the Application ( 10.8 ‘Storage Mode’, beginning on
Page 184).
To determine whether the evaluated readings have normal distribution, the
instrument performs a Kolmogorov-Smirnov test (if up to 40 readings are
evaluated) or a 
2
test (if more than 40 readings are evaluated) during the
final evaluation. The test result is printed out under the histogram and shows
if a normal distribution of the readings was determined [Normal distribu-
tion] ( Fig. 8-7) or not [No normal distribution] ( Fig. 8-8).
Fig. 8-7 Printout of a histogram with normal distribution (example)
H I S T O G R A M
n
10.1|
7 |*
12 |*
10.2|
10.3|
7 |*
10.4|
2 |*
10.5|
Upper limit Norm. Prop. Chart
10.2 23.33%
10.2 63.33%
10.3 70.00%
10.4 93.33%
10.5 100.00%
Normal distribution
NORMAL PROBABILITY CHART