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 Dart Stables.

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

Dart Stables

Valid Reviews

46 Valid Reviews

The Dart Stables experience has a total of 47 reviews. There are 46 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.

Below is the distribution of ratings for the 46 valid reviews:

Rating Count Percentage
10/10 15
9/10 14
8/10 11
7/10 1
6/10 1
5/10 2
4/10 0
3/10 0
2/10 1
1/10 1

84.78% Average

The raw data average (mean) for all the Dart Stables valid reviews is 84.78% and is based on 46 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.

Face-to-Face Reviews

32 Face-to-Face Reviews

The Rankers team meets with travellers while they’re in New Zealand and conducts face-to-face surveys. These reviews, in our opinion, are the most trusted in the industry and represent a critical control sample. To our knowledge, we are the only travel review website in the world that has gone to this extent.

More about face-to-face reviews

Within the 46 valid reviews, the experience has 32 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 32 face-to-face reviews:

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

87.50% Average

The raw data average (mean) for all the Dart Stables face-to-face reviews is 87.50% and is based on 32 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

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
Quentin Vercamer 7/10 1598 days 93%
Jan Kerkhof 9/10 1642 days 100%
Kaitlyn 5/10 1704 days 78%
Jasmine Rogers 8/10 1707 days 92%
Chris 1/10 1765 days 68%
Eileen Klinkmuller 10/10 1990 days 82%
Tabea 10/10 2021 days 81%
Barbara 9/10 2419 days 60%
Shona MacDonald 9/10 2677 days 47%
Iris Anette Berger 10/10 2677 days 47%
Claudia Hillebrand 9/10 2684 days 47%
Wouter Vanmoz 9/10 2695 days 46%
Laure Cops 10/10 2695 days 46%
Philipp Haass 8/10 2779 days 39%
Lee Kum NGO 10/10 2892 days 36%
Sofia Anderson 8/10 3075 days 25%
James Darren Tennant 10/10 3178 days 21%
Abee and Suess 10/10 3183 days 21%
Marcel & Kim Meichtry 10/10 3447 days 7%
Balonno 8/10 3501 days 4%
nathan_carr 10/10 3593 days 0%
Ellie Thompson 10/10 3799 days 23%
taniadeanryanbrittany 9/10 3807 days 23%
LandJ 9/10 3807 days 23%
Leontine van Laar 8/10 3830 days 22%
Jane Hancock 9/10 3830 days 23%
Nicky and Andy Prescott 9/10 4174 days 23%
Jackie 9/10 4191 days 23%
Anna 8/10 4200 days 22%
Samantha Williams 10/10 4292 days 23%
DustyLaptop 9/10 4415 days 23%
Lauren_D 10/10 4506 days 23%
rosil 6/10 4506 days 19%
Martina Bumiller 5/10 4511 days 18%
Robert 8/10 4536 days 22%
Thomas 10/10 4574 days 23%
Jon 8/10 4577 days 22%
Wilco 9/10 4578 days 23%
Anelia 2/10 4654 days 17%
Kate 9/10 4692 days 23%
Mike 9/10 4701 days 23%
Christopher 8/10 4716 days 22%
Zoe Summers 10/10 4718 days 23%
Arnaud Dionisio 8/10 4721 days 22%
Tanja 10/10 5212 days 23%
Andy Chapman 8/10 5243 days 22%


Several adjustments to the weighted average are added to improve relevancy and credibility. These adjustments apply equally to all experiences that meet the criteria.

Sample Size Adjustment

No Adjustment

A reasonable number of reviews are necessary in order for the average to be credible and for an experience to take a prime position within the ranking tables. As such, experiences with only a few reviews have a moderated score. This does not mean that the experience or the reviews can't be trusted. The Dart Stables experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-2.12% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 122 days. However the Dart Stables experience does not meet the criteria for any adjustment.

In addition, an experience's ranking score may be adjusted for each day there is no new ranking. After 1 day the adjustment comes into effect. The maximum number of days that can be adjusted for is 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.

The Dart Stables experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -2.08%
198 -2.09%
199 -2.11%
200 -2.12%
201 -2.13%
202 -2.14%
203 -2.15%

Final Ranking Score


The final ranking score once adjustments and 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.