Logtag-recorders LogTag Analyzer Temperature Recorder Manuel d'utilisateur télécharger pdf (Page 71)

Chapter 5 Results from LogTag 71

Automatically calculated

statistics

When a file is displayed either from downloading or from calling up a stored data file, the

software will automatically calculate and display some statistics of the recorded data.

These statistics are shown on the corresponding Summary tab and are also calculated for

each sequence of data points between the inspection marks.

If any readings within the time interval are beyond the limits of the sensor, the values for

Average Reading, Standard Deviation, and Mean Kinetic Temperature will not displayed

for the relevant time interval.

Average Reading

The Average Reading is the arithmetic mean of the sequence of data points. It is

calculated by adding all the data point values together and then dividing the total by the

number of data points. Mathematically this formula can expressed as illustrated in the

following picture:

Where:

av the calculated arithmetic mean

n the number of data points to include in the calculation

a data point to include in the calculation

For example, if there were 5 data points to calculate the arithmetic mean of and they

were, 12.3, 15.9, 16.2, 14.7, 14.9, then the arithmetic mean would be 14.8.

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 171 172

Pas de commentaire

Logtag-recorders LogTag Analyzer Temperature Recorder Manuel d'utilisateur Page 71