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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 Doubtful Sound Day Cruise.

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.

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Cymen Crick's avatar

Cymen Crick

Rankers Owner

Doubtful Sound Day Cruise

Valid Reviews

283 Valid Reviews

The Doubtful Sound Day Cruise experience has a total of 285 reviews. There are 283 valid reviews that are included when calculating the ranking score and 2 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 283 valid reviews:

Rating Count Percentage
10/10 104
37%
9/10 93
33%
8/10 55
19%
7/10 15
5%
6/10 6
2%
5/10 8
3%
4/10 1
0%
3/10 1
0%
2/10 0
0%
1/10 0
0%

88.52% Average

The raw data average (mean) for all the Doubtful Sound Day Cruise valid reviews is 88.52% and is based on 283 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

262 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 283 valid reviews, the experience has 262 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 262 face-to-face reviews:

Rating Count Percentage
10/10 92
35%
9/10 87
33%
8/10 53
20%
7/10 14
5%
6/10 6
2%
5/10 8
3%
4/10 1
0%
3/10 1
0%
2/10 0
0%
1/10 0
0%

88.09% Average

The raw data average (mean) for all the Doubtful Sound Day Cruise face-to-face reviews is 88.09% and is based on 262 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

89.99%

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
Nanay 10/10 1402 days 100%
Joanne&Ian 10/10 1494 days 74%
Geoff Steele 8/10 2771 days 20%
Axel and Patricia G 6/10 2959 days 15%
Leonie Westerhot 8/10 3031 days 16%
Ivanova R 9/10 3288 days 13%
Lorenz Pfisterer 10/10 3300 days 13%
Heidi et Mat 8/10 3309 days 13%
Anke Vater 10/10 3310 days 13%
Anouk Jongsma 9/10 3318 days 13%
Robin WUERFEL 9/10 3390 days 12%
Helen Parsons 10/10 3710 days 8%
Peter Beeloo 9/10 3714 days 8%
Laurent Arditi 9/10 3898 days 6%
Sheila Galpin 9/10 4049 days 4%
Simon Galpin 9/10 4049 days 4%
Douglas Dean 10/10 4051 days 4%
Stina Hultberg 4/10 4055 days 2%
Alexander Zimmer 7/10 4056 days 3%
Linus Larsson 3/10 4057 days 2%
Leon Courtney 10/10 4058 days 3%
Libby 10/10 4072 days 3%
Colin Billington 7/10 4073 days 3%
Don Wallis 10/10 4076 days 3%
Bill 7/10 4077 days 3%
Saskia 5/10 4077 days 2%
Terry Seaman 8/10 4079 days 3%
S B 10/10 4092 days 3%
M K 10/10 4092 days 3%
Alacchi Moustier 10/10 4092 days 3%
Maya Bakker-deDreu 8/10 4100 days 3%
Stuart Wilson 8/10 4106 days 3%
Fabian Lee 5/10 4109 days 2%
paul beacock 10/10 4110 days 3%
Gal Bero 10/10 4113 days 3%
Elly Zimmer 6/10 4117 days 2%
Bjorn Van Mulders 10/10 4120 days 3%
Kim Maertens 9/10 4120 days 3%
Steve Warren 10/10 4232 days 1%
hendrik king 7/10 4324 days 0%
Peter Jolliffe 10/10 4416 days 6%
Helen Dean 10/10 4416 days 6%
Dave Mertzig 10/10 4416 days 6%
Kathryn Pisco 9/10 4422 days 6%
Mike Pisco 9/10 4422 days 6%
Sebastian and Peter Beate 10/10 4439 days 6%
Fraser Goldsmith 8/10 4440 days 6%
Bucher 9/10 4491 days 6%
Marieke 8/10 4492 days 6%
Chew (Peter) 7/10 4497 days 5%
Natalie Nubler 6/10 4498 days 5%
Frans Derks 9/10 4499 days 6%
Meryem Buchwitz 9/10 4519 days 6%
roos wubben 9/10 4522 days 6%
Dagette 9/10 4567 days 6%
Teri C 10/10 4597 days 6%
Rob Klauer 5/10 4769 days 4%
Oliver Hardt 9/10 4770 days 6%
Val Phillips 8/10 4774 days 6%
Peter Adams 9/10 4775 days 6%
Harry Ruys 8/10 4777 days 6%
John McAllister 9/10 4778 days 6%
Keith Helen 10/10 4781 days 6%
Daniel Patricia 9/10 4784 days 6%
Laura Diepeveen 8/10 4786 days 6%
Fries 10/10 4790 days 6%
Karin Laurev 10/10 4790 days 6%
Gillian Rowe 9/10 4791 days 6%
Nigel Horrocks 7/10 4791 days 5%
Dieter Mangold 10/10 4793 days 6%
Lyn Deavin 8/10 4793 days 6%
Sabine & Stefan 10/10 4794 days 6%
Randewyk 8/10 4794 days 6%
Koster 6/10 4796 days 5%
Peter Aertssen 7/10 4796 days 5%
John A Jerome 8/10 4796 days 6%
Lynn Robinson 10/10 4802 days 6%
Heike 9/10 4805 days 6%
Robert MacLeod-Smith 8/10 4806 days 6%
Carel 8/10 4807 days 6%
Anna 9/10 4808 days 6%
Barrie Corless 9/10 4809 days 6%
Urban Reifler 10/10 4821 days 6%
Lyn Stainton 10/10 4884 days 6%
John & Vicki 8/10 4888 days 6%
jenckes 9/10 4963 days 6%
Debbie Smithers 10/10 5105 days 6%
Julie and Russ Charles 10/10 5129 days 6%
Kevin Wong 10/10 5129 days 6%
Rocipon 8/10 5130 days 6%
Margit and Corein Groenevelt 7/10 5133 days 5%
Richard Dudfield 10/10 5133 days 6%
John Duffy 10/10 5133 days 6%
Richard Gallichan 9/10 5134 days 6%
Jean Barker 8/10 5134 days 6%
Bette Eh 10/10 5136 days 6%
bryfrance 10/10 5137 days 6%
Juliane Kleiu 10/10 5137 days 6%
Claudia 8/10 5137 days 6%
E Brockbank 9/10 5138 days 6%
David Mellard 10/10 5139 days 6%
Bruce & Elaine Chote 10/10 5139 days 6%
Roland Berger 7/10 5140 days 5%
Ross 9/10 5140 days 6%
Gerstmann 9/10 5141 days 6%
Ekhard Wittkugel 10/10 5143 days 6%
Stephen Shearer 10/10 5144 days 6%
Monika 10/10 5145 days 6%
Betten 9/10 5146 days 6%
Stephen Jones 9/10 5147 days 6%
Mike and Diane Baker 10/10 5148 days 6%
Lenore Dejong 10/10 5149 days 6%
Andreas Fritesche 8/10 5150 days 6%
Matthys Kikke 9/10 5151 days 6%
Bucher Weruer 10/10 5151 days 6%
Camilla Andersson 7/10 5152 days 5%
Bob Adams 10/10 5159 days 6%
John 8/10 5159 days 6%
Katie Nicol 10/10 5160 days 6%
Martin Current 9/10 5162 days 6%
Teum and Orselien 8/10 5163 days 6%
Vanderhorst 8/10 5163 days 6%
John Price 9/10 5165 days 6%
Doris Schollenberger 10/10 5165 days 6%
Phil Hunter 9/10 5166 days 6%
Chris 8/10 5167 days 6%
Gordon Daniels 8/10 5170 days 6%
Hull 9/10 5170 days 6%
Lizzie 10/10 5237 days 6%
allesca 10/10 5267 days 6%
M Schram 8/10 5430 days 6%
Versteeg 9/10 5433 days 6%
Lomas 10/10 5442 days 6%
Maureen 10/10 5446 days 6%
Amy 9/10 5451 days 6%
Don & Geraldine 10/10 5487 days 6%
Hans and Astrid 10/10 5489 days 6%
Agnes 10/10 5491 days 6%
maggie Webster 10/10 5498 days 6%
Keita-Karen Buchanan 10/10 5498 days 6%
Lars Taarnhoej 7/10 5498 days 5%
markus Brandenberger 10/10 5499 days 6%
Jvjm Family 9/10 5500 days 6%
David B 7/10 5507 days 5%
Margaret O'Sullivan 8/10 5507 days 6%
Chris el capitan 9/10 5517 days 6%
John Cox 9/10 5518 days 6%
Muller Weissert 8/10 5519 days 6%
Brian Morris 9/10 5521 days 6%
Jobbs 10/10 5521 days 6%
Maria Newton 9/10 5522 days 6%
Dieter Groscurth 8/10 5522 days 6%
Gordon and Joyce 9/10 5522 days 6%
Remko Ebbens 9/10 5525 days 6%
Thijs Schoemaker 8/10 5526 days 6%
Armand 5/10 5526 days 4%
Ferth 10/10 5526 days 6%
J Kempeneers 10/10 5526 days 6%
Thea X 5/10 5535 days 4%
Keith Wilde 10/10 5535 days 6%
Dick Rosman 9/10 5536 days 6%
Terry Phillips 5/10 5537 days 4%
Jules 8/10 5537 days 6%
Carl Diehl 9/10 5538 days 6%
Paul Schoepfer 9/10 5538 days 6%
Uwe Rieper 10/10 5539 days 6%
Yvonne Ing 10/10 5539 days 6%
Diane Chapple 9/10 5539 days 6%
wannab 9/10 5540 days 6%
Kevin and Teresa 9/10 5540 days 6%
Christiane Lindenberg 9/10 5549 days 6%
Nigel Armstrong 9/10 5551 days 6%
Buss 10/10 5553 days 6%
John J 9/10 5554 days 6%
Heinrich Hax 10/10 5560 days 6%
marcusba 8/10 5583 days 6%
tanh 9/10 5587 days 6%
mariak 7/10 5588 days 5%
Silvana Thom 10/10 5612 days 6%
Wolfgang Dittrich 10/10 5612 days 6%
Chris Bulman 10/10 5613 days 6%
andyge 8/10 5632 days 6%
Ritag 9/10 5718 days 6%
regw 10/10 5722 days 6%
Cate 9/10 5845 days 6%
ginekek 9/10 5846 days 6%
geoffelizabeth 9/10 5846 days 6%
mikestep 9/10 5846 days 6%
EllenorO 10/10 5846 days 6%
Van Lent 9/10 5847 days 6%
Anna 10/10 5848 days 6%
Mike 9/10 5850 days 6%
Richard 10/10 5855 days 6%
Michael Walsall 10/10 5856 days 6%
AstridVG 8/10 5862 days 6%
Christine 9/10 5862 days 6%
Peter 9/10 5862 days 6%
DimitriD 5/10 5863 days 4%
Kitty 9/10 5863 days 6%
Max 10/10 5865 days 6%
Andy Baker 9/10 5866 days 6%
Francesca Sabat 8/10 5868 days 6%
Robert 10/10 5877 days 6%
Melissa Gillespie 10/10 5877 days 6%
Hetty 9/10 5877 days 6%
Charles 7/10 5878 days 5%
Byleveld 8/10 5879 days 6%
JoseB 8/10 5880 days 6%
MrHebbard 10/10 5880 days 6%
ChristineM 10/10 5880 days 6%
Elrik frau 10/10 5880 days 6%
Louise 9/10 5886 days 6%
Douglas 9/10 5887 days 6%
CSander 9/10 5904 days 6%
Patricia 8/10 5914 days 6%
Dijk 8/10 5918 days 6%
Josefine 10/10 5918 days 6%
Ducolq 5/10 5918 days 4%
Jacques 8/10 5919 days 6%
Carina 8/10 5924 days 6%
Michael 9/10 5956 days 6%
silvia 8/10 5958 days 6%
Anouk 8/10 5958 days 6%
Mat 9/10 5963 days 6%
Paul 8/10 6010 days 6%
Helga 9/10 6020 days 6%
Mikel 9/10 6085 days 6%
Christine 6/10 6094 days 5%
Jim Summers 9/10 6094 days 6%
Franz 7/10 6217 days 5%
Linda and Peter 10/10 6225 days 6%
Mike and Judy 8/10 6226 days 6%
Methers 9/10 6226 days 6%
Denise 10/10 6229 days 6%
Kavanagh 8/10 6229 days 6%
De Wijn 8/10 6232 days 6%
Lisa Jones 9/10 6233 days 6%
Christian 9/10 6233 days 6%
Soren Danning 8/10 6233 days 6%
Jones 10/10 6237 days 6%
Orla Hansen 10/10 6238 days 6%
Bauer 10/10 6244 days 6%
Aharon 10/10 6244 days 6%
D.A. Mulder 9/10 6245 days 6%
Jurg Meister 8/10 6246 days 6%
Sally and David Wallis 10/10 6246 days 6%
Knol 9/10 6247 days 6%
Sue Randall 8/10 6250 days 6%
Cole Penelope 10/10 6250 days 6%
Blenkoe 6/10 6251 days 5%
Erwin de Kleijn 8/10 6251 days 6%
Thomas 9/10 6260 days 6%
Bex 10/10 6273 days 6%
Van Hoof 9/10 6286 days 6%
Tim 10/10 6286 days 6%
Gabriel Faber 9/10 6321 days 6%
Jonkers 9/10 6323 days 6%
Edwin 10/10 6327 days 6%
Lyn Saxon 10/10 6331 days 6%
Wendy Williams 10/10 6338 days 6%
Hans Knappmann 10/10 6448 days 6%
Phillipa 10/10 6556 days 6%
Stefan&Gerte 9/10 6570 days 6%
Cat 9/10 6576 days 6%
TeamFlorida 10/10 6583 days 6%
Jo 9/10 6583 days 6%
Fenke 9/10 6588 days 6%
Bas 9/10 6588 days 6%
Martin Smith 9/10 6593 days 6%
John Beirne 9/10 6600 days 6%
Palle 9/10 6605 days 6%
Anna 9/10 6605 days 6%
Svenja 10/10 6611 days 6%
Shirely 10/10 6611 days 6%
Rogier 8/10 6612 days 6%
Wendy 8/10 6616 days 6%
Kerry 10/10 6621 days 6%
Henrich 10/10 6621 days 6%
Messing 10/10 6624 days 6%
Rolf Kruger 10/10 6624 days 6%
Ian 8/10 6628 days 6%
Peter 9/10 6628 days 6%
Brian 10/10 6628 days 6%

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 Doubtful Sound Day Cruise experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.70% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 61 days. However the Doubtful Sound Day Cruise 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 Doubtful Sound Day Cruise experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
… …
197 -3.65%
198 -3.66%
199 -3.68%
200 -3.70%
201 -3.72%
202 -3.74%
203 -3.76%
… …

Balancing Adjustment

1.58% 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

88%

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.