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

64.77%

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 2/10 764 days 100%
Inez Cavallaro 6/10 825 days 82%
John Farley 10/10 1426 days 26%
Frank Fabian 8/10 1477 days 24%
Les Hendy 8/10 1503 days 23%
Lea Celerier 8/10 1504 days 23%
Jane Scott 9/10 1555 days 24%
Michelle Smit 8/10 1617 days 22%
Jan Berendsen 5/10 1712 days 18%
Chandra Macraigne 6/10 1747 days 18%
Nanna Torp 3/10 1749 days 17%
Karel 7/10 2486 days 12%
Dick Kooij 7/10 2907 days 7%
Huw Davies 8/10 3175 days 5%
Goran Backlund 7/10 3185 days 4%
Marc Schmiedily 3/10 3186 days 4%
Martin Beuker 8/10 3206 days 4%
Richard Harvey 8/10 3209 days 4%
Mark Bogton 5/10 3209 days 4%
Thomas 5/10 3211 days 4%
Kimberley Mills 8/10 3216 days 4%
Scott Simpson 5/10 3217 days 4%
Luis Valenzuela 5/10 3222 days 3%
Petra 8/10 3224 days 4%
David Blundell 7/10 3224 days 4%
Lucie Rutherfurd 9/10 3227 days 4%
Peter W. 3/10 3291 days 3%
Steve Neilson 8/10 3298 days 3%
Erik Folkersen 4/10 3305 days 3%
Mark de Boer 8/10 3311 days 3%
Tina 9/10 3321 days 3%
Jacquimd13 10/10 3444 days 2%
Natascha Rachel 7/10 3511 days 1%
A Jones 9/10 3538 days 1%
Walker 5/10 3538 days 0%
Lindsey Clough 2/10 3544 days 0%
Natalie Maguire 5/10 3549 days 0%
Andreas Rath 6/10 3551 days 0%
Peter & Angela Brown 10/10 3556 days 0%
Chris Ashton 7/10 3560 days 0%
Kees Stigter 7/10 3562 days 0%
Diete Rokosch 9/10 3567 days 0%
Brian 10/10 3569 days 0%
Ronald Lippett 8/10 3571 days 0%
Ines 8/10 3581 days 0%
Julian Seizinger 2/10 3581 days 0%
Ann Thompson 9/10 3582 days 0%
Luise Jaeger 10/10 3584 days 0%
Eva Stauderova 6/10 3585 days 0%
Marianne Astorp 8/10 3585 days 0%
Henrik Petersen 7/10 3587 days 0%
Michael Eck 8/10 3587 days 0%
Lili 8/10 3587 days 0%
Florian 7/10 3587 days 0%
willsworthy 5/10 3686 days 4%
craigy 5/10 3778 days 4%
BigSis 7/10 3778 days 5%
Russ Turner 2/10 3917 days 4%
Andy 6/10 3921 days 4%
Michael Egli 9/10 3922 days 5%
Alan & Lorna 3/10 3924 days 4%
Venot 7/10 3934 days 5%
Roger Trusedale 5/10 3941 days 4%
David Rich 6/10 3944 days 4%
Mathias Skov 4/10 3945 days 4%
Nikki Wood 6/10 3953 days 4%
Mike Kirchner 2/10 3955 days 4%
Wolfgang G 10/10 3965 days 5%
Bo Moenstead 8/10 3968 days 5%
cees juffermans 8/10 3972 days 5%
Camenzind 7/10 3979 days 5%
Angela Stringer 4/10 3990 days 4%
blokzyl 8/10 4010 days 5%
aages 9/10 4014 days 5%
Emma Coltman 5/10 4023 days 4%
Helen Pet 9/10 4029 days 5%
nancyburns 7/10 4051 days 5%
Von 5/10 4051 days 4%
rita 7/10 4130 days 5%
Jess Thompson 10/10 4143 days 5%
Boxa Smith 10/10 4143 days 5%
LowerD 9/10 4259 days 5%
Sofie 8/10 4265 days 5%
Arjan Muis 7/10 4267 days 5%
Marion 10/10 4269 days 5%
Kim 6/10 4269 days 4%
MichaelS1 3/10 4281 days 4%
ClodaghM 8/10 4282 days 5%
Andrew Wilson 9/10 4282 days 5%
FiensG 8/10 4284 days 5%
Joel 7/10 4285 days 5%
Robert 4/10 4289 days 4%
Chris 8/10 4289 days 5%
JuliaG1 7/10 4298 days 5%
DavidMurray 7/10 4299 days 5%
AndrewF78 6/10 4301 days 4%
Sarah 8/10 4301 days 5%
Carmel 7/10 4305 days 5%
marcusr 7/10 4306 days 5%
BethanD 9/10 4312 days 5%
ClaudiaK 1/10 4314 days 4%
Miguel 3/10 4316 days 4%
Ko 8/10 4330 days 5%
Nienhaus 7/10 4332 days 5%
Kern 3/10 4350 days 4%
Stephanie 9/10 4365 days 5%
Miha 10/10 4370 days 5%
Jacinta 3/10 4396 days 4%
Lara 7/10 4443 days 5%
Katie 7/10 4461 days 5%
Daniela Bell 10/10 4472 days 5%
Jenny 7/10 4476 days 5%
maria d 10/10 4507 days 5%
fgregory 3/10 4528 days 4%
woodolly 3/10 4609 days 4%
Christian 6/10 4652 days 4%
Alexandra Vogeli 8/10 4652 days 5%
Richard Steward 9/10 4662 days 5%
boukje 8/10 4665 days 5%
Stephanie 10/10 4677 days 5%
Carla 8/10 4677 days 5%
Melissa Steedman 7/10 4704 days 5%
Vanessa Brennan 5/10 4704 days 4%
Maria 8/10 4708 days 5%
Gerber Liselotte 7/10 4739 days 5%
Manuel 5/10 4754 days 4%
Tom Clements 6/10 4755 days 4%
Sally Walker 9/10 4782 days 5%
Bridgy 10/10 4955 days 5%
andrew julie 8/10 4989 days 5%
Bas Marieke 8/10 5006 days 5%
Richhouse 8/10 5011 days 5%
Dennis 7/10 5012 days 5%
Rietveld 6/10 5023 days 4%
Susanne 5/10 5028 days 4%
Lucy 7/10 5028 days 5%
Ralph 7/10 5030 days 5%
Nissa 7/10 5030 days 5%
Ash Sturm 6/10 5147 days 4%

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

-4.07% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 42 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 -4.01%
198 -4.03%
199 -4.05%
200 -4.07%
201 -4.09%
202 -4.11%
203 -4.13%

Final Ranking Score

61%

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.