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 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

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

69.81%

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 1295 days 92%
Inez Cavallaro 6/10 1356 days 100%
John Farley 10/10 1957 days 88%
Frank Fabian 8/10 2008 days 80%
Les Hendy 8/10 2034 days 78%
Lea Celerier 8/10 2035 days 78%
Jane Scott 9/10 2085 days 80%
Michelle Smit 8/10 2147 days 72%
Jan Berendsen 5/10 2243 days 55%
Chandra Macraigne 6/10 2278 days 55%
Nanna Torp 3/10 2280 days 50%
Karel 7/10 3017 days 22%
Dick Kooij 7/10 3438 days 0%
Huw Davies 8/10 3706 days 17%
Goran Backlund 7/10 3716 days 16%
Marc Schmiedily 3/10 3717 days 12%
Martin Beuker 8/10 3737 days 17%
Richard Harvey 8/10 3740 days 17%
Mark Bogton 5/10 3740 days 13%
Thomas 5/10 3742 days 13%
Kimberley Mills 8/10 3747 days 17%
Scott Simpson 5/10 3748 days 13%
Luis Valenzuela 5/10 3753 days 13%
Petra 8/10 3755 days 17%
David Blundell 7/10 3755 days 16%
Lucie Rutherfurd 9/10 3758 days 19%
Peter W. 3/10 3822 days 12%
Steve Neilson 8/10 3829 days 17%
Erik Folkersen 4/10 3836 days 12%
Mark de Boer 8/10 3842 days 17%
Tina 9/10 3852 days 19%
Jacquimd13 10/10 3975 days 19%
Natascha Rachel 7/10 4042 days 16%
A Jones 9/10 4069 days 19%
Walker 5/10 4069 days 13%
Lindsey Clough 2/10 4075 days 11%
Natalie Maguire 5/10 4080 days 13%
Andreas Rath 6/10 4082 days 14%
Peter & Angela Brown 10/10 4087 days 19%
Chris Ashton 7/10 4091 days 16%
Kees Stigter 7/10 4093 days 16%
Diete Rokosch 9/10 4098 days 19%
Brian 10/10 4100 days 19%
Ronald Lippett 8/10 4102 days 17%
Ines 8/10 4112 days 17%
Julian Seizinger 2/10 4112 days 11%
Ann Thompson 9/10 4113 days 19%
Luise Jaeger 10/10 4115 days 19%
Eva Stauderova 6/10 4116 days 14%
Marianne Astorp 8/10 4116 days 17%
Henrik Petersen 7/10 4118 days 16%
Michael Eck 8/10 4118 days 17%
Lili 8/10 4118 days 17%
Florian 7/10 4118 days 16%
willsworthy 5/10 4217 days 13%
craigy 5/10 4309 days 13%
BigSis 7/10 4309 days 16%
Russ Turner 2/10 4448 days 11%
Andy 6/10 4452 days 14%
Michael Egli 9/10 4453 days 19%
Alan & Lorna 3/10 4455 days 12%
Venot 7/10 4465 days 16%
Roger Trusedale 5/10 4472 days 13%
David Rich 6/10 4475 days 14%
Mathias Skov 4/10 4476 days 12%
Nikki Wood 6/10 4484 days 14%
Mike Kirchner 2/10 4486 days 11%
Wolfgang G 10/10 4496 days 19%
Bo Moenstead 8/10 4499 days 17%
cees juffermans 8/10 4503 days 17%
Camenzind 7/10 4510 days 16%
Angela Stringer 4/10 4521 days 12%
blokzyl 8/10 4541 days 17%
aages 9/10 4545 days 19%
Emma Coltman 5/10 4554 days 13%
Helen Pet 9/10 4560 days 19%
nancyburns 7/10 4582 days 16%
Von 5/10 4582 days 13%
rita 7/10 4661 days 16%
Jess Thompson 10/10 4674 days 19%
Boxa Smith 10/10 4674 days 19%
LowerD 9/10 4790 days 19%
Sofie 8/10 4796 days 17%
Arjan Muis 7/10 4798 days 16%
Marion 10/10 4800 days 19%
Kim 6/10 4800 days 14%
MichaelS1 3/10 4812 days 12%
ClodaghM 8/10 4813 days 17%
Andrew Wilson 9/10 4813 days 19%
FiensG 8/10 4815 days 17%
Joel 7/10 4816 days 16%
Robert 4/10 4819 days 12%
Chris 8/10 4820 days 17%
JuliaG1 7/10 4829 days 16%
DavidMurray 7/10 4830 days 16%
AndrewF78 6/10 4832 days 14%
Sarah 8/10 4832 days 17%
Carmel 7/10 4836 days 16%
marcusr 7/10 4837 days 16%
BethanD 9/10 4843 days 19%
ClaudiaK 1/10 4845 days 11%
Miguel 3/10 4846 days 12%
Ko 8/10 4860 days 17%
Nienhaus 7/10 4863 days 16%
Kern 3/10 4880 days 12%
Stephanie 9/10 4896 days 19%
Miha 10/10 4901 days 19%
Jacinta 3/10 4926 days 12%
Lara 7/10 4973 days 16%
Katie 7/10 4991 days 16%
Daniela Bell 10/10 5002 days 19%
Jenny 7/10 5006 days 16%
maria d 10/10 5038 days 19%
fgregory 3/10 5058 days 12%
woodolly 3/10 5139 days 12%
Christian 6/10 5183 days 14%
Alexandra Vogeli 8/10 5183 days 17%
Richard Steward 9/10 5193 days 19%
boukje 8/10 5196 days 17%
Stephanie 10/10 5208 days 19%
Carla 8/10 5208 days 17%
Melissa Steedman 7/10 5235 days 16%
Vanessa Brennan 5/10 5235 days 13%
Maria 8/10 5239 days 17%
Gerber Liselotte 7/10 5270 days 16%
Manuel 5/10 5285 days 13%
Tom Clements 6/10 5286 days 14%
Sally Walker 9/10 5313 days 19%
Bridgy 10/10 5486 days 19%
andrew julie 8/10 5520 days 17%
Bas Marieke 8/10 5537 days 17%
Richhouse 8/10 5542 days 17%
Dennis 7/10 5543 days 16%
Rietveld 6/10 5554 days 14%
Susanne 5/10 5559 days 13%
Lucy 7/10 5559 days 16%
Ralph 7/10 5561 days 16%
Nissa 7/10 5561 days 16%
Ash Sturm 6/10 5678 days 14%

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

-2.72% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 95 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 -2.67%
198 -2.69%
199 -2.70%
200 -2.72%
201 -2.73%
202 -2.74%
203 -2.76%

Final Ranking Score

67%

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.