Ranking Score Explained

Kia ora, 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

71.83%

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 2247 days 48%
Inez Cavallaro 6/10 2308 days 100%
John Farley 10/10 2909 days 80%
Frank Fabian 8/10 2960 days 75%
Les Hendy 8/10 2986 days 73%
Lea Celerier 8/10 2987 days 73%
Jane Scott 9/10 3038 days 71%
Michelle Smit 8/10 3100 days 66%
Jan Berendsen 5/10 3195 days 44%
Chandra Macraigne 6/10 3230 days 50%
Nanna Torp 3/10 3232 days 26%
Karel 7/10 3969 days 11%
Dick Kooij 7/10 4390 days 17%
Huw Davies 8/10 4658 days 19%
Goran Backlund 7/10 4668 days 17%
Marc Schmiedily 3/10 4669 days 4%
Martin Beuker 8/10 4689 days 19%
Richard Harvey 8/10 4692 days 19%
Mark Bogton 5/10 4692 days 12%
Thomas 5/10 4694 days 12%
Kimberley Mills 8/10 4699 days 19%
Scott Simpson 5/10 4700 days 12%
Luis Valenzuela 5/10 4705 days 12%
Petra 8/10 4707 days 19%
David Blundell 7/10 4707 days 17%
Lucie Rutherfurd 9/10 4710 days 19%
Peter W. 3/10 4774 days 4%
Steve Neilson 8/10 4781 days 19%
Erik Folkersen 4/10 4788 days 8%
Mark de Boer 8/10 4794 days 19%
Tina 9/10 4804 days 19%
Jacquimd13 10/10 4927 days 19%
Natascha Rachel 7/10 4994 days 17%
A Jones 9/10 5021 days 19%
Walker 5/10 5021 days 12%
Lindsey Clough 2/10 5027 days 2%
Natalie Maguire 5/10 5032 days 12%
Andreas Rath 6/10 5034 days 15%
Peter & Angela Brown 10/10 5039 days 19%
Chris Ashton 7/10 5043 days 17%
Kees Stigter 7/10 5045 days 17%
Diete Rokosch 9/10 5050 days 19%
Brian 10/10 5052 days 19%
Ronald Lippett 8/10 5054 days 19%
Ines 8/10 5064 days 19%
Julian Seizinger 2/10 5064 days 2%
Ann Thompson 9/10 5065 days 19%
Luise Jaeger 10/10 5067 days 19%
Eva Stauderova 6/10 5068 days 15%
Marianne Astorp 8/10 5068 days 19%
Henrik Petersen 7/10 5070 days 17%
Michael Eck 8/10 5070 days 19%
Lili 8/10 5070 days 19%
Florian 7/10 5070 days 17%
willsworthy 5/10 5169 days 12%
craigy 5/10 5261 days 12%
BigSis 7/10 5261 days 17%
Russ Turner 2/10 5400 days 2%
Andy 6/10 5404 days 15%
Michael Egli 9/10 5405 days 19%
Alan & Lorna 3/10 5407 days 4%
Venot 7/10 5417 days 17%
Roger Trusedale 5/10 5424 days 12%
David Rich 6/10 5427 days 15%
Mathias Skov 4/10 5428 days 8%
Nikki Wood 6/10 5436 days 15%
Mike Kirchner 2/10 5438 days 2%
Wolfgang G 10/10 5448 days 19%
Bo Moenstead 8/10 5451 days 19%
cees juffermans 8/10 5455 days 19%
Camenzind 7/10 5462 days 17%
Angela Stringer 4/10 5473 days 8%
blokzyl 8/10 5493 days 19%
aages 9/10 5497 days 19%
Emma Coltman 5/10 5506 days 12%
Helen Pet 9/10 5512 days 19%
nancyburns 7/10 5534 days 17%
Von 5/10 5534 days 12%
rita 7/10 5613 days 17%
Jess Thompson 10/10 5626 days 19%
Boxa Smith 10/10 5626 days 19%
LowerD 9/10 5742 days 19%
Sofie 8/10 5748 days 19%
Arjan Muis 7/10 5750 days 17%
Marion 10/10 5753 days 19%
Kim 6/10 5753 days 15%
MichaelS1 3/10 5764 days 4%
ClodaghM 8/10 5765 days 19%
Andrew Wilson 9/10 5765 days 19%
FiensG 8/10 5767 days 19%
Joel 7/10 5768 days 17%
Robert 4/10 5772 days 8%
Chris 8/10 5773 days 19%
JuliaG1 7/10 5781 days 17%
DavidMurray 7/10 5782 days 17%
AndrewF78 6/10 5784 days 15%
Sarah 8/10 5785 days 19%
Carmel 7/10 5789 days 17%
marcusr 7/10 5790 days 17%
BethanD 9/10 5795 days 19%
ClaudiaK 1/10 5797 days 0%
Miguel 3/10 5799 days 4%
Ko 8/10 5813 days 19%
Nienhaus 7/10 5816 days 17%
Kern 3/10 5833 days 4%
Stephanie 9/10 5848 days 19%
Miha 10/10 5853 days 19%
Jacinta 3/10 5879 days 4%
Lara 7/10 5926 days 17%
Katie 7/10 5944 days 17%
Daniela Bell 10/10 5955 days 19%
Jenny 7/10 5959 days 17%
maria d 10/10 5991 days 19%
fgregory 3/10 6011 days 4%
woodolly 3/10 6092 days 4%
Christian 6/10 6135 days 15%
Alexandra Vogeli 8/10 6135 days 19%
Richard Steward 9/10 6145 days 19%
boukje 8/10 6149 days 19%
Stephanie 10/10 6160 days 19%
Carla 8/10 6160 days 19%
Melissa Steedman 7/10 6187 days 17%
Vanessa Brennan 5/10 6187 days 12%
Maria 8/10 6191 days 19%
Gerber Liselotte 7/10 6222 days 17%
Manuel 5/10 6237 days 12%
Tom Clements 6/10 6238 days 15%
Sally Walker 9/10 6265 days 19%
Bridgy 10/10 6438 days 19%
andrew julie 8/10 6472 days 19%
Bas Marieke 8/10 6489 days 19%
Richhouse 8/10 6494 days 19%
Dennis 7/10 6495 days 17%
Rietveld 6/10 6506 days 15%
Susanne 5/10 6511 days 12%
Lucy 7/10 6511 days 17%
Ralph 7/10 6513 days 17%
Nissa 7/10 6513 days 17%
Ash Sturm 6/10 6630 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

-4.02% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 41 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 -3.96%
198 -3.98%
199 -4.00%
200 -4.02%
201 -4.04%
202 -4.06%
203 -4.08%

Balancing Adjustment

8.31% 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.