Ranking Score Explained

Hi, 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 Hells Gate and Wai Ora Spa.

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.

Cymen Crick's avatar

Cymen Crick

Rankers Owner

Hells Gate and Wai Ora Spa

Valid Reviews

139 Valid Reviews

The Hells Gate and Wai Ora Spa experience has a total of 145 reviews. There are 139 valid reviews that are included when calculating the ranking score and 6 invalid reviews 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 139 valid reviews:

Rating Count Percentage
10/10 14
10%
9/10 15
11%
8/10 32
23%
7/10 30
22%
6/10 13
9%
5/10 15
11%
4/10 4
3%
3/10 10
7%
2/10 5
4%
1/10 1
1%

68.42% Average

The raw data average (mean) for all the Hells Gate and Wai Ora Spa valid reviews is 68.42% and is based on 139 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

119 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 139 valid reviews, the experience has 119 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 119 face-to-face reviews:

Rating Count Percentage
10/10 10
8%
9/10 13
11%
8/10 30
25%
7/10 28
24%
6/10 11
9%
5/10 12
10%
4/10 3
3%
3/10 7
6%
2/10 4
3%
1/10 1
1%

68.99% Average

The raw data average (mean) for all the Hells Gate and Wai Ora Spa face-to-face reviews is 68.99% and is based on 119 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

71.84%

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
Melissa S 2/10 2311 days 48%
Inez Cavallaro 6/10 2372 days 100%
John Farley 10/10 2973 days 79%
Frank Fabian 8/10 3024 days 74%
Les Hendy 8/10 3050 days 72%
Lea Celerier 8/10 3051 days 72%
Jane Scott 9/10 3102 days 69%
Michelle Smit 8/10 3164 days 65%
Jan Berendsen 5/10 3259 days 43%
Chandra Macraigne 6/10 3294 days 48%
Nanna Torp 3/10 3296 days 25%
Karel 7/10 4033 days 8%
Dick Kooij 7/10 4454 days 18%
Huw Davies 8/10 4722 days 19%
Goran Backlund 7/10 4732 days 18%
Marc Schmiedily 3/10 4733 days 5%
Martin Beuker 8/10 4753 days 19%
Richard Harvey 8/10 4756 days 19%
Mark Bogton 5/10 4756 days 12%
Thomas 5/10 4758 days 12%
Kimberley Mills 8/10 4763 days 19%
Scott Simpson 5/10 4764 days 12%
Luis Valenzuela 5/10 4769 days 12%
Petra 8/10 4771 days 19%
David Blundell 7/10 4771 days 18%
Lucie Rutherfurd 9/10 4774 days 20%
Peter W. 3/10 4838 days 5%
Steve Neilson 8/10 4845 days 19%
Erik Folkersen 4/10 4852 days 8%
Mark de Boer 8/10 4858 days 19%
Tina 9/10 4868 days 20%
Jacquimd13 10/10 4991 days 20%
Natascha Rachel 7/10 5058 days 18%
A Jones 9/10 5085 days 20%
Walker 5/10 5085 days 12%
Lindsey Clough 2/10 5091 days 2%
Natalie Maguire 5/10 5096 days 12%
Andreas Rath 6/10 5098 days 15%
Peter & Angela Brown 10/10 5103 days 20%
Chris Ashton 7/10 5107 days 18%
Kees Stigter 7/10 5109 days 18%
Diete Rokosch 9/10 5114 days 20%
Brian 10/10 5116 days 20%
Ronald Lippett 8/10 5118 days 19%
Ines 8/10 5128 days 19%
Julian Seizinger 2/10 5128 days 2%
Ann Thompson 9/10 5129 days 20%
Luise Jaeger 10/10 5131 days 20%
Eva Stauderova 6/10 5132 days 15%
Marianne Astorp 8/10 5132 days 19%
Henrik Petersen 7/10 5134 days 18%
Michael Eck 8/10 5134 days 19%
Lili 8/10 5134 days 19%
Florian 7/10 5134 days 18%
willsworthy 5/10 5233 days 12%
craigy 5/10 5325 days 12%
BigSis 7/10 5325 days 18%
Russ Turner 2/10 5464 days 2%
Andy 6/10 5468 days 15%
Michael Egli 9/10 5469 days 20%
Alan & Lorna 3/10 5471 days 5%
Venot 7/10 5481 days 18%
Roger Trusedale 5/10 5488 days 12%
David Rich 6/10 5491 days 15%
Mathias Skov 4/10 5492 days 8%
Nikki Wood 6/10 5500 days 15%
Mike Kirchner 2/10 5502 days 2%
Wolfgang G 10/10 5512 days 20%
Bo Moenstead 8/10 5515 days 19%
cees juffermans 8/10 5519 days 19%
Camenzind 7/10 5526 days 18%
Angela Stringer 4/10 5537 days 8%
blokzyl 8/10 5557 days 19%
aages 9/10 5561 days 20%
Emma Coltman 5/10 5570 days 12%
Helen Pet 9/10 5576 days 20%
nancyburns 7/10 5598 days 18%
Von 5/10 5598 days 12%
rita 7/10 5677 days 18%
Jess Thompson 10/10 5690 days 20%
Boxa Smith 10/10 5690 days 20%
LowerD 9/10 5806 days 20%
Sofie 8/10 5812 days 19%
Arjan Muis 7/10 5814 days 18%
Marion 10/10 5816 days 20%
Kim 6/10 5816 days 15%
MichaelS1 3/10 5828 days 5%
ClodaghM 8/10 5829 days 19%
Andrew Wilson 9/10 5829 days 20%
FiensG 8/10 5831 days 19%
Joel 7/10 5832 days 18%
Robert 4/10 5836 days 8%
Chris 8/10 5836 days 19%
JuliaG1 7/10 5845 days 18%
DavidMurray 7/10 5846 days 18%
AndrewF78 6/10 5848 days 15%
Sarah 8/10 5848 days 19%
Carmel 7/10 5852 days 18%
marcusr 7/10 5853 days 18%
BethanD 9/10 5859 days 20%
ClaudiaK 1/10 5861 days 0%
Miguel 3/10 5863 days 5%
Ko 8/10 5877 days 19%
Nienhaus 7/10 5879 days 18%
Kern 3/10 5897 days 5%
Stephanie 9/10 5912 days 20%
Miha 10/10 5917 days 20%
Jacinta 3/10 5942 days 5%
Lara 7/10 5990 days 18%
Katie 7/10 6008 days 18%
Daniela Bell 10/10 6019 days 20%
Jenny 7/10 6023 days 18%
maria d 10/10 6054 days 20%
fgregory 3/10 6075 days 5%
woodolly 3/10 6156 days 5%
Christian 6/10 6199 days 15%
Alexandra Vogeli 8/10 6199 days 19%
Richard Steward 9/10 6209 days 20%
boukje 8/10 6212 days 19%
Stephanie 10/10 6224 days 20%
Carla 8/10 6224 days 19%
Melissa Steedman 7/10 6251 days 18%
Vanessa Brennan 5/10 6251 days 12%
Maria 8/10 6255 days 19%
Gerber Liselotte 7/10 6286 days 18%
Manuel 5/10 6301 days 12%
Tom Clements 6/10 6302 days 15%
Sally Walker 9/10 6329 days 20%
Bridgy 10/10 6502 days 20%
andrew julie 8/10 6536 days 19%
Bas Marieke 8/10 6553 days 19%
Richhouse 8/10 6558 days 19%
Dennis 7/10 6559 days 18%
Rietveld 6/10 6570 days 15%
Susanne 5/10 6575 days 12%
Lucy 7/10 6575 days 18%
Ralph 7/10 6577 days 18%
Nissa 7/10 6577 days 18%
Ash Sturm 6/10 6694 days 15%

Adjustments

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 Hells Gate and Wai Ora Spa experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.11% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 55 days. However the Hells Gate and Wai Ora Spa 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 Hells Gate and Wai Ora Spa experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.05%
198 -4.07%
199 -4.09%
200 -4.11%
201 -4.13%
202 -4.15%
203 -4.17%

Balancing Adjustment

8.36% Adjustment

Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.

You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.

We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.

Final Ranking Score

76%

The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.