# What's in Compare Performance Reports?

372

Chapter 12 - Reporting Performance Testing Results

The following figure shows the last few lines of a Weighted Absolute report:

**Relative Reports**

Relative reports list the base response time as 1.00 and the other response times

relative to that base.

To define a Relative report:

s

Click

**Reports > New > Compare Performance**

, and then select the

**Value relative to **

**base report **

and the

**Individual sample data **

options.

The final line of the report gives the geometric mean of the relative response times for

each report. To determine the geometric mean, TestManager multiplies the response

times and then takes a root of the product equal to the number of response times.

For example, if there are five response times, TestManager multiplies them together

and takes the fifth root of the product.

Mathematically, the geometric mean of a set of values

*x*

1

,

*x*

2

, ...,

*x*

k

is expressed as:

x

1

x

2

...x

k

(

)

1 k

/