Ranking Score Explained

Hi there, thanks for your interest in how we calculate an experience's ranking score. It's at the core of Rankers so I'm pleased you're curious.

The ranking score percentage is used to compare and sort experiences in ranking tables. It is not necessarily a direct measurement of the quality of a particular experience as rated by its customers. I've found it a useful tool to allow me to find the best experiences with confidence. But I've also found it important to read the customer reviews before making any final judgements!

We calculate an experience's ranking score using a multi-factor data model instead of a raw data average (mean). This model takes into account several important questions. For instance - is there a trusted body of reviews? What is the age of a review and is the review from a credible source?

Below you'll find details around some of the important factors that went into calculating the ranking score for Gabriels Gully Historic Reserve.

If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz. We don't believe this is perfect or complete so we're always interested in ways we might make improvements.

Nick Morrison's avatar

Nick Morrison

Rankers owner

Gabriels Gully Historic Reserve

Valid Reviews

17 Valid Reviews

The Gabriels Gully Historic Reserve experience has a total of 18 reviews. There are 17 valid reviews that are included when calculating the ranking score and 1 invalid review that are excluded from the calculation. Reviews can be excluded only when a reviewer is not verified or after an investigation by our team determines the reviewer is not genuine.

Within these 17 valid reviews, the experience has 1 face-to-face review collected during interviews by our team.

Below is the distribution of ratings for the 17 valid reviews:

Rating Count Percentage
10/10 7
9/10 6
8/10 2
7/10 1
6/10 0
5/10 0
4/10 1
3/10 0
2/10 0
1/10 0

88.82% Average

The raw data average (mean) for all the Gabriels Gully Historic Reserve valid reviews is 88.82% and is based on 17 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.

Weighted Average


Rankers calculates a weighted mean as a base average on which we can improve. Individual review's ratings are given a weight based on several factors. The weight of a review determines the overall impact it'll have on the final weighted average.

Recent reviews have more weight as they are more relevant and reflect the experience as it currently operates. Over time reviews become less relevant and loose their impact on the ranking score.

Low rating reviews carry slightly less weight. This dampens the effect of very low ratings for every experience across the board. This is especially important when the experience has few reviews overall and a single negative rating can grossly mischaracterise an experience. Consistent poor reviews will still result in the experience receiving a comparitively low ranking score.

Credible sources provide reviews that can be trusted. If we have verified a reviewer is genuine via a face-to-face meeting then the review carries additional weight.

Reviewer Rating Age Relative Weight
Sylvia 9/10 294 days 100%
Tracy Tanner-Doyle 8/10 415 days 80%
Just a guy 9/10 600 days 51%
M&P 10/10 629 days 46%
The Morris’s 10/10 721 days 31%
A&E 10/10 752 days 27%
Grum 10/10 1056 days 6%
Laurie & Kaye, NSW, Australia. 9/10 1086 days 6%
WATERS 10/10 1146 days 5%
J wells 8/10 1146 days 5%
Tom 9/10 1269 days 5%
Bronwen Surgey 10/10 1344 days 5%
Alva Feldmeier 9/10 2348 days 3%
Erica b 9/10 2395 days 3%
R Deano 10/10 2577 days 2%
Helen 4/10 2792 days 1%
Trif 7/10 3551 days 0%


No Adjustment

Several adjustments to the weighted average may be added to improve relevancy and credibility. Gabriels Gully Historic Reserve does not meet the criteria for any of these adjustments to apply.

Final Ranking Score


The final ranking score once rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.

If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.