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.

Nick Morrison's avatar

Nick Morrison

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

70.01%

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 1092 days 92%
Inez Cavallaro 6/10 1153 days 100%
John Farley 10/10 1754 days 91%
Frank Fabian 8/10 1805 days 85%
Les Hendy 8/10 1831 days 83%
Lea Celerier 8/10 1832 days 83%
Jane Scott 9/10 1882 days 85%
Michelle Smit 8/10 1944 days 78%
Jan Berendsen 5/10 2040 days 63%
Chandra Macraigne 6/10 2075 days 63%
Nanna Torp 3/10 2077 days 58%
Karel 7/10 2814 days 37%
Dick Kooij 7/10 3235 days 18%
Huw Davies 8/10 3503 days 7%
Goran Backlund 7/10 3513 days 6%
Marc Schmiedily 3/10 3514 days 5%
Martin Beuker 8/10 3534 days 5%
Richard Harvey 8/10 3537 days 5%
Mark Bogton 5/10 3537 days 4%
Thomas 5/10 3539 days 4%
Kimberley Mills 8/10 3544 days 5%
Scott Simpson 5/10 3545 days 4%
Luis Valenzuela 5/10 3550 days 4%
Petra 8/10 3552 days 4%
David Blundell 7/10 3552 days 4%
Lucie Rutherfurd 9/10 3555 days 5%
Peter W. 3/10 3619 days 1%
Steve Neilson 8/10 3626 days 1%
Erik Folkersen 4/10 3633 days 1%
Mark de Boer 8/10 3639 days 0%
Tina 9/10 3649 days 0%
Jacquimd13 10/10 3772 days 25%
Natascha Rachel 7/10 3839 days 22%
A Jones 9/10 3866 days 25%
Walker 5/10 3866 days 20%
Lindsey Clough 2/10 3872 days 18%
Natalie Maguire 5/10 3877 days 20%
Andreas Rath 6/10 3879 days 20%
Peter & Angela Brown 10/10 3884 days 25%
Chris Ashton 7/10 3888 days 22%
Kees Stigter 7/10 3890 days 22%
Diete Rokosch 9/10 3895 days 25%
Brian 10/10 3897 days 25%
Ronald Lippett 8/10 3899 days 23%
Ines 8/10 3909 days 23%
Julian Seizinger 2/10 3909 days 18%
Ann Thompson 9/10 3910 days 25%
Luise Jaeger 10/10 3912 days 25%
Eva Stauderova 6/10 3913 days 20%
Marianne Astorp 8/10 3913 days 23%
Henrik Petersen 7/10 3915 days 22%
Michael Eck 8/10 3915 days 23%
Lili 8/10 3915 days 23%
Florian 7/10 3915 days 22%
willsworthy 5/10 4014 days 20%
craigy 5/10 4106 days 20%
BigSis 7/10 4106 days 22%
Russ Turner 2/10 4245 days 18%
Andy 6/10 4249 days 20%
Michael Egli 9/10 4250 days 25%
Alan & Lorna 3/10 4252 days 19%
Venot 7/10 4262 days 22%
Roger Trusedale 5/10 4269 days 20%
David Rich 6/10 4272 days 20%
Mathias Skov 4/10 4273 days 19%
Nikki Wood 6/10 4281 days 20%
Mike Kirchner 2/10 4283 days 18%
Wolfgang G 10/10 4293 days 25%
Bo Moenstead 8/10 4296 days 23%
cees juffermans 8/10 4300 days 23%
Camenzind 7/10 4307 days 22%
Angela Stringer 4/10 4318 days 19%
blokzyl 8/10 4338 days 23%
aages 9/10 4342 days 25%
Emma Coltman 5/10 4351 days 20%
Helen Pet 9/10 4357 days 25%
nancyburns 7/10 4379 days 22%
Von 5/10 4379 days 20%
rita 7/10 4458 days 22%
Jess Thompson 10/10 4471 days 25%
Boxa Smith 10/10 4471 days 25%
LowerD 9/10 4587 days 25%
Sofie 8/10 4593 days 23%
Arjan Muis 7/10 4595 days 22%
Marion 10/10 4597 days 25%
Kim 6/10 4597 days 20%
MichaelS1 3/10 4609 days 19%
ClodaghM 8/10 4610 days 23%
Andrew Wilson 9/10 4610 days 25%
FiensG 8/10 4612 days 23%
Joel 7/10 4613 days 22%
Robert 4/10 4616 days 19%
Chris 8/10 4617 days 23%
JuliaG1 7/10 4626 days 22%
DavidMurray 7/10 4627 days 22%
AndrewF78 6/10 4629 days 20%
Sarah 8/10 4629 days 23%
Carmel 7/10 4633 days 22%
marcusr 7/10 4634 days 22%
BethanD 9/10 4640 days 25%
ClaudiaK 1/10 4642 days 18%
Miguel 3/10 4643 days 19%
Ko 8/10 4657 days 23%
Nienhaus 7/10 4660 days 22%
Kern 3/10 4677 days 19%
Stephanie 9/10 4693 days 25%
Miha 10/10 4698 days 25%
Jacinta 3/10 4723 days 19%
Lara 7/10 4770 days 22%
Katie 7/10 4788 days 22%
Daniela Bell 10/10 4799 days 25%
Jenny 7/10 4803 days 22%
maria d 10/10 4835 days 25%
fgregory 3/10 4855 days 19%
woodolly 3/10 4936 days 19%
Christian 6/10 4980 days 20%
Alexandra Vogeli 8/10 4980 days 23%
Richard Steward 9/10 4990 days 25%
boukje 8/10 4993 days 23%
Stephanie 10/10 5005 days 25%
Carla 8/10 5005 days 23%
Melissa Steedman 7/10 5032 days 22%
Vanessa Brennan 5/10 5032 days 20%
Maria 8/10 5036 days 23%
Gerber Liselotte 7/10 5067 days 22%
Manuel 5/10 5082 days 20%
Tom Clements 6/10 5083 days 20%
Sally Walker 9/10 5110 days 25%
Bridgy 10/10 5283 days 25%
andrew julie 8/10 5317 days 23%
Bas Marieke 8/10 5334 days 23%
Richhouse 8/10 5339 days 23%
Dennis 7/10 5340 days 22%
Rietveld 6/10 5351 days 20%
Susanne 5/10 5356 days 20%
Lucy 7/10 5356 days 22%
Ralph 7/10 5358 days 22%
Nissa 7/10 5358 days 22%
Ash Sturm 6/10 5475 days 20%

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

-3.79% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 52 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 -3.74%
198 -3.76%
199 -3.78%
200 -3.79%
201 -3.81%
202 -3.83%
203 -3.85%

Final Ranking Score

66%

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.