Description:
Describes all the Introscope Report display properties as shown in a metric table.
Solution:
The default display properties in an Introscope Report are as follows:
Average Min
The unweighted average of the minimum values for all periods.
(In previous Introscope versions, this was the Min value.)
Average Max
The unweighted average of the maximum values for all periods.
(In previous Introscope versions, this was the Max value.)
Mean
A weighted average, calculated as follows:
(tv1*dp1 + tv2*dp2 + tvn*dpn...) / dp1+dp2....+dpn
where tv(n) is the total of all values for a period, and dp(n) is the total count of data points for same period.
This metric gives greater weight to periods with more data points.
Absolute Max
The actual largest or highest single value across all periods.
(In previous Introscope versions, this was the MMax value.)
Absolute Min
The actual smallest or lowest single value across all periods.
(In previous Introscope versions, this was the MMin value.)
Example
Consider a table with two periods, one hour each.
The first hour has one datapoint with a value 20. The second hour has ten data points, with values of 40.
The mean would be (20*1+10*40)/(10+1)=(400 + 20) / 11 = 38.2. This is weighted. (If it were unweighted it would be 30, which is the average of the averages.)
The Absolute Max would be 40, and the Absolute Min would be 20.
The Average Max would be 30, and the Average Min would be 30. These are unweighted. They are the average of the max and min values for each period, which in this example is 20 and 40.