Hi, 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.
Doubtful Sound Day Cruise
Valid Reviews
284 Valid Reviews
The Doubtful Sound Day Cruise experience has a total of 286 reviews. There are 284 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 284 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 105 |
|
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% |
88.56% Average
The raw data average (mean) for all the Doubtful Sound Day Cruise valid reviews is 88.56% and is based on 284 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 284 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
91.98%
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 |
|---|---|---|---|
| Cees Koeman | 10/10 | 257 days | 100% |
| Nanay | 10/10 | 1963 days | 5% |
| Joanne&Ian | 10/10 | 2055 days | 5% |
| Geoff Steele | 8/10 | 3332 days | 2% |
| Axel and Patricia G | 6/10 | 3520 days | 1% |
| Leonie Westerhot | 8/10 | 3592 days | 1% |
| Ivanova R | 9/10 | 3849 days | 1% |
| Lorenz Pfisterer | 10/10 | 3861 days | 1% |
| Heidi et Mat | 8/10 | 3870 days | 1% |
| Anke Vater | 10/10 | 3871 days | 1% |
| Anouk Jongsma | 9/10 | 3879 days | 1% |
| Robin WUERFEL | 9/10 | 3951 days | 1% |
| Helen Parsons | 10/10 | 4271 days | 0% |
| Peter Beeloo | 9/10 | 4275 days | 0% |
| Laurent Arditi | 9/10 | 4459 days | 1% |
| Sheila Galpin | 9/10 | 4610 days | 1% |
| Simon Galpin | 9/10 | 4610 days | 1% |
| Douglas Dean | 10/10 | 4612 days | 1% |
| Stina Hultberg | 4/10 | 4616 days | 0% |
| Alexander Zimmer | 7/10 | 4617 days | 1% |
| Linus Larsson | 3/10 | 4618 days | 0% |
| Leon Courtney | 10/10 | 4619 days | 1% |
| Libby | 10/10 | 4633 days | 1% |
| Colin Billington | 7/10 | 4634 days | 1% |
| Don Wallis | 10/10 | 4637 days | 1% |
| Bill | 7/10 | 4638 days | 1% |
| Saskia | 5/10 | 4638 days | 1% |
| Terry Seaman | 8/10 | 4640 days | 1% |
| S B | 10/10 | 4653 days | 1% |
| M K | 10/10 | 4653 days | 1% |
| Alacchi Moustier | 10/10 | 4653 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4661 days | 1% |
| Stuart Wilson | 8/10 | 4667 days | 1% |
| Fabian Lee | 5/10 | 4670 days | 1% |
| paul beacock | 10/10 | 4671 days | 1% |
| Gal Bero | 10/10 | 4674 days | 1% |
| Elly Zimmer | 6/10 | 4678 days | 1% |
| Bjorn Van Mulders | 10/10 | 4681 days | 1% |
| Kim Maertens | 9/10 | 4681 days | 1% |
| Steve Warren | 10/10 | 4793 days | 1% |
| hendrik king | 7/10 | 4885 days | 1% |
| Peter Jolliffe | 10/10 | 4977 days | 1% |
| Helen Dean | 10/10 | 4977 days | 1% |
| Dave Mertzig | 10/10 | 4977 days | 1% |
| Kathryn Pisco | 9/10 | 4983 days | 1% |
| Mike Pisco | 9/10 | 4983 days | 1% |
| Sebastian and Peter Beate | 10/10 | 5000 days | 1% |
| Fraser Goldsmith | 8/10 | 5001 days | 1% |
| Bucher | 9/10 | 5052 days | 1% |
| Marieke | 8/10 | 5053 days | 1% |
| Chew (Peter) | 7/10 | 5058 days | 1% |
| Natalie Nubler | 6/10 | 5059 days | 1% |
| Frans Derks | 9/10 | 5060 days | 1% |
| Meryem Buchwitz | 9/10 | 5080 days | 1% |
| roos wubben | 9/10 | 5083 days | 1% |
| Dagette | 9/10 | 5128 days | 1% |
| Teri C | 10/10 | 5158 days | 1% |
| Rob Klauer | 5/10 | 5330 days | 1% |
| Oliver Hardt | 9/10 | 5331 days | 1% |
| Val Phillips | 8/10 | 5335 days | 1% |
| Peter Adams | 9/10 | 5336 days | 1% |
| Harry Ruys | 8/10 | 5338 days | 1% |
| John McAllister | 9/10 | 5339 days | 1% |
| Keith Helen | 10/10 | 5342 days | 1% |
| Daniel Patricia | 9/10 | 5345 days | 1% |
| Laura Diepeveen | 8/10 | 5347 days | 1% |
| Fries | 10/10 | 5351 days | 1% |
| Karin Laurev | 10/10 | 5351 days | 1% |
| Gillian Rowe | 9/10 | 5352 days | 1% |
| Nigel Horrocks | 7/10 | 5352 days | 1% |
| Dieter Mangold | 10/10 | 5354 days | 1% |
| Lyn Deavin | 8/10 | 5354 days | 1% |
| Sabine & Stefan | 10/10 | 5355 days | 1% |
| Randewyk | 8/10 | 5355 days | 1% |
| Koster | 6/10 | 5357 days | 1% |
| Peter Aertssen | 7/10 | 5357 days | 1% |
| John A Jerome | 8/10 | 5357 days | 1% |
| Lynn Robinson | 10/10 | 5363 days | 1% |
| Heike | 9/10 | 5366 days | 1% |
| Robert MacLeod-Smith | 8/10 | 5367 days | 1% |
| Carel | 8/10 | 5368 days | 1% |
| Anna | 9/10 | 5369 days | 1% |
| Barrie Corless | 9/10 | 5370 days | 1% |
| Urban Reifler | 10/10 | 5382 days | 1% |
| Lyn Stainton | 10/10 | 5445 days | 1% |
| John & Vicki | 8/10 | 5449 days | 1% |
| jenckes | 9/10 | 5524 days | 1% |
| Debbie Smithers | 10/10 | 5666 days | 1% |
| Julie and Russ Charles | 10/10 | 5690 days | 1% |
| Kevin Wong | 10/10 | 5690 days | 1% |
| Rocipon | 8/10 | 5691 days | 1% |
| Margit and Corein Groenevelt | 7/10 | 5694 days | 1% |
| Richard Dudfield | 10/10 | 5694 days | 1% |
| John Duffy | 10/10 | 5694 days | 1% |
| Richard Gallichan | 9/10 | 5695 days | 1% |
| Jean Barker | 8/10 | 5695 days | 1% |
| Bette Eh | 10/10 | 5697 days | 1% |
| bryfrance | 10/10 | 5698 days | 1% |
| Juliane Kleiu | 10/10 | 5698 days | 1% |
| Claudia | 8/10 | 5698 days | 1% |
| E Brockbank | 9/10 | 5699 days | 1% |
| David Mellard | 10/10 | 5700 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5700 days | 1% |
| Roland Berger | 7/10 | 5701 days | 1% |
| Ross | 9/10 | 5701 days | 1% |
| Gerstmann | 9/10 | 5702 days | 1% |
| Ekhard Wittkugel | 10/10 | 5704 days | 1% |
| Stephen Shearer | 10/10 | 5705 days | 1% |
| Monika | 10/10 | 5706 days | 1% |
| Betten | 9/10 | 5707 days | 1% |
| Stephen Jones | 9/10 | 5708 days | 1% |
| Mike and Diane Baker | 10/10 | 5709 days | 1% |
| Lenore Dejong | 10/10 | 5710 days | 1% |
| Andreas Fritesche | 8/10 | 5711 days | 1% |
| Matthys Kikke | 9/10 | 5712 days | 1% |
| Bucher Weruer | 10/10 | 5712 days | 1% |
| Camilla Andersson | 7/10 | 5713 days | 1% |
| Bob Adams | 10/10 | 5720 days | 1% |
| John | 8/10 | 5720 days | 1% |
| Katie Nicol | 10/10 | 5721 days | 1% |
| Martin Current | 9/10 | 5723 days | 1% |
| Teum and Orselien | 8/10 | 5724 days | 1% |
| Vanderhorst | 8/10 | 5724 days | 1% |
| John Price | 9/10 | 5726 days | 1% |
| Doris Schollenberger | 10/10 | 5726 days | 1% |
| Phil Hunter | 9/10 | 5727 days | 1% |
| Chris | 8/10 | 5728 days | 1% |
| Gordon Daniels | 8/10 | 5731 days | 1% |
| Hull | 9/10 | 5731 days | 1% |
| Lizzie | 10/10 | 5798 days | 1% |
| allesca | 10/10 | 5828 days | 1% |
| M Schram | 8/10 | 5991 days | 1% |
| Versteeg | 9/10 | 5994 days | 1% |
| Lomas | 10/10 | 6003 days | 1% |
| Maureen | 10/10 | 6007 days | 1% |
| Amy | 9/10 | 6012 days | 1% |
| Don & Geraldine | 10/10 | 6048 days | 1% |
| Hans and Astrid | 10/10 | 6050 days | 1% |
| Agnes | 10/10 | 6052 days | 1% |
| maggie Webster | 10/10 | 6059 days | 1% |
| Keita-Karen Buchanan | 10/10 | 6059 days | 1% |
| Lars Taarnhoej | 7/10 | 6059 days | 1% |
| markus Brandenberger | 10/10 | 6060 days | 1% |
| Jvjm Family | 9/10 | 6061 days | 1% |
| David B | 7/10 | 6068 days | 1% |
| Margaret O'Sullivan | 8/10 | 6068 days | 1% |
| Chris el capitan | 9/10 | 6078 days | 1% |
| John Cox | 9/10 | 6079 days | 1% |
| Muller Weissert | 8/10 | 6080 days | 1% |
| Brian Morris | 9/10 | 6082 days | 1% |
| Jobbs | 10/10 | 6082 days | 1% |
| Maria Newton | 9/10 | 6083 days | 1% |
| Dieter Groscurth | 8/10 | 6083 days | 1% |
| Gordon and Joyce | 9/10 | 6083 days | 1% |
| Remko Ebbens | 9/10 | 6086 days | 1% |
| Thijs Schoemaker | 8/10 | 6087 days | 1% |
| Armand | 5/10 | 6087 days | 1% |
| Ferth | 10/10 | 6087 days | 1% |
| J Kempeneers | 10/10 | 6087 days | 1% |
| Thea X | 5/10 | 6096 days | 1% |
| Keith Wilde | 10/10 | 6096 days | 1% |
| Dick Rosman | 9/10 | 6097 days | 1% |
| Terry Phillips | 5/10 | 6098 days | 1% |
| Jules | 8/10 | 6098 days | 1% |
| Carl Diehl | 9/10 | 6099 days | 1% |
| Paul Schoepfer | 9/10 | 6099 days | 1% |
| Uwe Rieper | 10/10 | 6100 days | 1% |
| Yvonne Ing | 10/10 | 6100 days | 1% |
| Diane Chapple | 9/10 | 6100 days | 1% |
| wannab | 9/10 | 6101 days | 1% |
| Kevin and Teresa | 9/10 | 6101 days | 1% |
| Christiane Lindenberg | 9/10 | 6110 days | 1% |
| Nigel Armstrong | 9/10 | 6112 days | 1% |
| Buss | 10/10 | 6114 days | 1% |
| John J | 9/10 | 6115 days | 1% |
| Heinrich Hax | 10/10 | 6121 days | 1% |
| marcusba | 8/10 | 6144 days | 1% |
| tanh | 9/10 | 6148 days | 1% |
| mariak | 7/10 | 6149 days | 1% |
| Silvana Thom | 10/10 | 6173 days | 1% |
| Wolfgang Dittrich | 10/10 | 6173 days | 1% |
| Chris Bulman | 10/10 | 6174 days | 1% |
| andyge | 8/10 | 6193 days | 1% |
| Ritag | 9/10 | 6279 days | 1% |
| regw | 10/10 | 6283 days | 1% |
| Cate | 9/10 | 6406 days | 1% |
| ginekek | 9/10 | 6407 days | 1% |
| geoffelizabeth | 9/10 | 6407 days | 1% |
| mikestep | 9/10 | 6407 days | 1% |
| EllenorO | 10/10 | 6407 days | 1% |
| Van Lent | 9/10 | 6408 days | 1% |
| Anna | 10/10 | 6409 days | 1% |
| Mike | 9/10 | 6411 days | 1% |
| Richard | 10/10 | 6417 days | 1% |
| Michael Walsall | 10/10 | 6417 days | 1% |
| AstridVG | 8/10 | 6423 days | 1% |
| Christine | 9/10 | 6423 days | 1% |
| Peter | 9/10 | 6423 days | 1% |
| DimitriD | 5/10 | 6424 days | 1% |
| Kitty | 9/10 | 6424 days | 1% |
| Max | 10/10 | 6426 days | 1% |
| Andy Baker | 9/10 | 6427 days | 1% |
| Francesca Sabat | 8/10 | 6429 days | 1% |
| Robert | 10/10 | 6438 days | 1% |
| Melissa Gillespie | 10/10 | 6438 days | 1% |
| Hetty | 9/10 | 6439 days | 1% |
| Charles | 7/10 | 6439 days | 1% |
| Byleveld | 8/10 | 6440 days | 1% |
| JoseB | 8/10 | 6441 days | 1% |
| MrHebbard | 10/10 | 6441 days | 1% |
| ChristineM | 10/10 | 6441 days | 1% |
| Elrik frau | 10/10 | 6441 days | 1% |
| Louise | 9/10 | 6448 days | 1% |
| Douglas | 9/10 | 6448 days | 1% |
| CSander | 9/10 | 6465 days | 1% |
| Patricia | 8/10 | 6475 days | 1% |
| Dijk | 8/10 | 6479 days | 1% |
| Josefine | 10/10 | 6479 days | 1% |
| Ducolq | 5/10 | 6479 days | 1% |
| Jacques | 8/10 | 6480 days | 1% |
| Carina | 8/10 | 6485 days | 1% |
| Michael | 9/10 | 6517 days | 1% |
| silvia | 8/10 | 6520 days | 1% |
| Anouk | 8/10 | 6520 days | 1% |
| Mat | 9/10 | 6524 days | 1% |
| Paul | 8/10 | 6571 days | 1% |
| Helga | 9/10 | 6582 days | 1% |
| Mikel | 9/10 | 6647 days | 1% |
| Christine | 6/10 | 6655 days | 1% |
| Jim Summers | 9/10 | 6656 days | 1% |
| Franz | 7/10 | 6778 days | 1% |
| Linda and Peter | 10/10 | 6786 days | 1% |
| Mike and Judy | 8/10 | 6787 days | 1% |
| Methers | 9/10 | 6787 days | 1% |
| Denise | 10/10 | 6790 days | 1% |
| Kavanagh | 8/10 | 6790 days | 1% |
| De Wijn | 8/10 | 6793 days | 1% |
| Lisa Jones | 9/10 | 6794 days | 1% |
| Christian | 9/10 | 6794 days | 1% |
| Soren Danning | 8/10 | 6794 days | 1% |
| Jones | 10/10 | 6798 days | 1% |
| Orla Hansen | 10/10 | 6799 days | 1% |
| Bauer | 10/10 | 6805 days | 1% |
| Aharon | 10/10 | 6805 days | 1% |
| D.A. Mulder | 9/10 | 6806 days | 1% |
| Jurg Meister | 8/10 | 6807 days | 1% |
| Sally and David Wallis | 10/10 | 6807 days | 1% |
| Knol | 9/10 | 6808 days | 1% |
| Sue Randall | 8/10 | 6811 days | 1% |
| Cole Penelope | 10/10 | 6811 days | 1% |
| Blenkoe | 6/10 | 6812 days | 1% |
| Erwin de Kleijn | 8/10 | 6812 days | 1% |
| Thomas | 9/10 | 6821 days | 1% |
| Bex | 10/10 | 6834 days | 1% |
| Van Hoof | 9/10 | 6847 days | 1% |
| Tim | 10/10 | 6847 days | 1% |
| Gabriel Faber | 9/10 | 6882 days | 1% |
| Jonkers | 9/10 | 6884 days | 1% |
| Edwin | 10/10 | 6888 days | 1% |
| Lyn Saxon | 10/10 | 6892 days | 1% |
| Wendy Williams | 10/10 | 6899 days | 1% |
| Hans Knappmann | 10/10 | 7009 days | 1% |
| Phillipa | 10/10 | 7117 days | 1% |
| Stefan&Gerte | 9/10 | 7131 days | 1% |
| Cat | 9/10 | 7137 days | 1% |
| TeamFlorida | 10/10 | 7144 days | 1% |
| Jo | 9/10 | 7144 days | 1% |
| Fenke | 9/10 | 7149 days | 1% |
| Bas | 9/10 | 7149 days | 1% |
| Martin Smith | 9/10 | 7154 days | 1% |
| John Beirne | 9/10 | 7161 days | 1% |
| Palle | 9/10 | 7166 days | 1% |
| Anna | 9/10 | 7166 days | 1% |
| Svenja | 10/10 | 7172 days | 1% |
| Shirely | 10/10 | 7172 days | 1% |
| Rogier | 8/10 | 7173 days | 1% |
| Wendy | 8/10 | 7177 days | 1% |
| Kerry | 10/10 | 7182 days | 1% |
| Henrich | 10/10 | 7182 days | 1% |
| Messing | 10/10 | 7185 days | 1% |
| Rolf Kruger | 10/10 | 7185 days | 1% |
| Ian | 8/10 | 7189 days | 1% |
| Peter | 9/10 | 7189 days | 1% |
| Brian | 10/10 | 7189 days | 1% |
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
-3.58% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 59 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 | -3.53% |
| 198 | -3.55% |
| 199 | -3.57% |
| 200 | -3.58% |
| 201 | -3.60% |
| 202 | -3.62% |
| 203 | -3.64% |
| … | … |
Balancing Adjustment
1.23% 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
90%
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.