# Statistics FilterΒΆ

The *foglamp-filter-statistics* filter is designed to accept data from one or more asset and produces statistics over specified time intervals, for example produce the mean, standard deviation and variance for 100 milliseconds samples of the data. The statistics that can be produced are;

mean - the average of all the values in the time period calculated by adding up all the values and dividing by the number of values.

mode - the number that appears most often in the time period.

median - the median is found by sorting all the values in the time period and then choosing the middle number in this sorted set

minimum - the minimum value that appears within the time period

maximum - the maximum value that appears within the time period

standard deviation - the standard deviation measures the spread of the numbers above and below the mean value

variance - the variance is the average of the squared differences from the mean value calculated over the time period

Statistics filters are added in the same way as any other filters.

Click on the Applications add icon for your service or task.

Select the

statisticsplugin from the list of available plugins.Name your statistics filter.

Click

Nextand you will be presented with the following configuration page

Configure your statistics filter

Mean: A toggle that controls inclusion of the mean value

Mode: A toggle that controls inclusion of the mode value

Median: A toggle that controls inclusion of the median value

Minimum: A toggle that controls inclusion of the minimum value

Maximum: A toggle that controls inclusion of the maximum value

Standard Deviation: A toggle that controls inclusion of the standard deviation value

Variance: A toggle that controls inclusion of the variance valueEnable your filter and click

Done