# How the Analysis works

We are often asked....How does the analysis work?

Are there assumptions as to distance?

What do the numbers mean?

There are no assumptions on distance at all.

Here is a Step by step explanation of the analysis:

Each Race:

1. The analysis uses the individual boats TOT (time on time correction) to calculate the Corrected time for each boat in each race.

2. Each race is then looked at to find the median of all the corrected times to give a "Yardstick" to be used.

3. The Yardstick is used to determine the "Calculated TOD" (Time on Distance) for each of the boats in that particular race.

Each Boat:

1. Once all the Corrected TOD times for each race have been determined. The analysis uses the median for each boat individually.

2. It also determines the Standard Deviation of those Corrected TOD values to identify the consistency (or spread) of all those values.

A sample boat:

Looking at the report that is sent to each club for each fleet.

My boat 1:

PHRF ASP = 165, Submitted ASP = 165 - simply recording what we were sent vs what we have on file.

Median of Calc' TOD = is as Each Boat 1. above. If you take all the Calc TOD values
128, 124, 172. The median is 128.

Average of Calc TOD = is for reference only, not used in analysis.

PHRF vs Median = 165 - 128 = -37 (he raced 37 sec/nm faster than his rating)

St/Dev = The standard dev of his Calc TOD
128,124,172. The St Dev is 26.6

3. These numbers are individual results and can be found in our Race Analysis Detail reports (available to Handicappers only):

Race Analysis NFS Detail by Class/Club

4. Lake Wide Analysis

Once the above information has been compiled, the race analysis then does a complete analysis by Class.

All individual results are then grouped together by class and a weighted average (based on the number of races) is taken and results in the Race Analysis Summary FS & NFS.