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Ballot Tabulation Methods
Ballot Tabulation Methods

An overview of the different tabulation methods available via Eventive Balloting.

Written by Theo Patt
Updated over a week ago

## Eventive formula

We recommend using the Eventive formula for fair & easy voting tabulation!

The Eventive formula effectively computes a weighted Bayesian average for each film, where the minimum number of votes to receive an award is based on the lower bound of a confidence interval for the mean number of votes received across all films. This ensures that a film with low attendance & perfect votes won't automatically win over a film with a much larger number of high votes that may have a few low scores in there, too.

score = (v ÷ (v+m)) × R + (m ÷ (v+m)) × C

R = average for the movie (mean) = (rating)
m = lower bound of the 90% confidence interval for the mean number of votes received
C = the mean vote across the whole report

## IMDb formula

Similar to the Eventive formula, the IMDb formula computes a weighted Bayesian average for each film. However, unlike the Eventive formula, you can manually specify a custom "minimum number of votes" that a film must receive in order to be considered for an award.

score = (v ÷ (v+m)) × R + (m ÷ (v+m)) × C

R = average for the movie (mean) = (rating)
m = CUSTOM FESTIVAL-SET MINIMUM # OF VOTES FOR INCLUSION
C = the mean vote across the whole report

## Simple average

The simple average computes a simple average score for each film based on all the votes received. It does not consider attendance as a factor. For instance, a film with ten attendees who all rated it 5 stars would win over a film with ninety-nine 5 star ratings and one 4 star rating.

score = R

R = average for the movie (mean) = (rating)

In order to account for this, you can manually specify a custom "minimum number of votes" that a film must receive in order to be considered for an award.