LogTag Recorders LogTag Analyzer Temperature Recorder - Manual (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
t
i
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.