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.
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
90.19%
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 | 1285 days | 100% |
| Joanne&Ian | 10/10 | 1377 days | 76% |
| Geoff Steele | 8/10 | 2654 days | 15% |
| Axel and Patricia G | 6/10 | 2842 days | 12% |
| Leonie Westerhot | 8/10 | 2914 days | 13% |
| Ivanova R | 9/10 | 3171 days | 11% |
| Lorenz Pfisterer | 10/10 | 3183 days | 11% |
| Heidi et Mat | 8/10 | 3192 days | 10% |
| Anke Vater | 10/10 | 3193 days | 11% |
| Anouk Jongsma | 9/10 | 3201 days | 11% |
| Robin WUERFEL | 9/10 | 3273 days | 10% |
| Helen Parsons | 10/10 | 3593 days | 7% |
| Peter Beeloo | 9/10 | 3597 days | 7% |
| Laurent Arditi | 9/10 | 3781 days | 5% |
| Sheila Galpin | 9/10 | 3932 days | 4% |
| Simon Galpin | 9/10 | 3932 days | 4% |
| Douglas Dean | 10/10 | 3934 days | 4% |
| Stina Hultberg | 4/10 | 3938 days | 3% |
| Alexander Zimmer | 7/10 | 3939 days | 4% |
| Linus Larsson | 3/10 | 3940 days | 2% |
| Leon Courtney | 10/10 | 3941 days | 4% |
| Libby | 10/10 | 3955 days | 4% |
| Colin Billington | 7/10 | 3956 days | 4% |
| Don Wallis | 10/10 | 3959 days | 4% |
| Bill | 7/10 | 3960 days | 3% |
| Saskia | 5/10 | 3960 days | 3% |
| Terry Seaman | 8/10 | 3962 days | 4% |
| S B | 10/10 | 3975 days | 4% |
| M K | 10/10 | 3975 days | 4% |
| Alacchi Moustier | 10/10 | 3975 days | 4% |
| Maya Bakker-deDreu | 8/10 | 3983 days | 3% |
| Stuart Wilson | 8/10 | 3989 days | 3% |
| Fabian Lee | 5/10 | 3992 days | 3% |
| paul beacock | 10/10 | 3993 days | 3% |
| Gal Bero | 10/10 | 3996 days | 3% |
| Elly Zimmer | 6/10 | 4000 days | 3% |
| Bjorn Van Mulders | 10/10 | 4003 days | 3% |
| Kim Maertens | 9/10 | 4003 days | 3% |
| Steve Warren | 10/10 | 4115 days | 2% |
| hendrik king | 7/10 | 4207 days | 1% |
| Peter Jolliffe | 10/10 | 4299 days | 1% |
| Helen Dean | 10/10 | 4299 days | 1% |
| Dave Mertzig | 10/10 | 4299 days | 1% |
| Kathryn Pisco | 9/10 | 4305 days | 1% |
| Mike Pisco | 9/10 | 4305 days | 1% |
| Sebastian and Peter Beate | 10/10 | 4322 days | 0% |
| Fraser Goldsmith | 8/10 | 4323 days | 0% |
| Bucher | 9/10 | 4374 days | 0% |
| Marieke | 8/10 | 4375 days | 0% |
| Chew (Peter) | 7/10 | 4380 days | 4% |
| Natalie Nubler | 6/10 | 4381 days | 4% |
| Frans Derks | 9/10 | 4382 days | 5% |
| Meryem Buchwitz | 9/10 | 4402 days | 5% |
| roos wubben | 9/10 | 4405 days | 5% |
| Dagette | 9/10 | 4450 days | 5% |
| Teri C | 10/10 | 4480 days | 5% |
| Rob Klauer | 5/10 | 4652 days | 3% |
| Oliver Hardt | 9/10 | 4653 days | 5% |
| Val Phillips | 8/10 | 4657 days | 4% |
| Peter Adams | 9/10 | 4658 days | 5% |
| Harry Ruys | 8/10 | 4660 days | 4% |
| John McAllister | 9/10 | 4661 days | 5% |
| Keith Helen | 10/10 | 4664 days | 5% |
| Daniel Patricia | 9/10 | 4667 days | 5% |
| Laura Diepeveen | 8/10 | 4669 days | 4% |
| Fries | 10/10 | 4673 days | 5% |
| Karin Laurev | 10/10 | 4673 days | 5% |
| Gillian Rowe | 9/10 | 4674 days | 5% |
| Nigel Horrocks | 7/10 | 4674 days | 4% |
| Dieter Mangold | 10/10 | 4676 days | 5% |
| Lyn Deavin | 8/10 | 4676 days | 4% |
| Sabine & Stefan | 10/10 | 4677 days | 5% |
| Randewyk | 8/10 | 4677 days | 4% |
| Koster | 6/10 | 4679 days | 4% |
| Peter Aertssen | 7/10 | 4679 days | 4% |
| John A Jerome | 8/10 | 4679 days | 4% |
| Lynn Robinson | 10/10 | 4685 days | 5% |
| Heike | 9/10 | 4688 days | 5% |
| Robert MacLeod-Smith | 8/10 | 4689 days | 4% |
| Carel | 8/10 | 4690 days | 4% |
| Anna | 9/10 | 4691 days | 5% |
| Barrie Corless | 9/10 | 4692 days | 5% |
| Urban Reifler | 10/10 | 4704 days | 5% |
| Lyn Stainton | 10/10 | 4767 days | 5% |
| John & Vicki | 8/10 | 4771 days | 4% |
| jenckes | 9/10 | 4846 days | 5% |
| Debbie Smithers | 10/10 | 4988 days | 5% |
| Julie and Russ Charles | 10/10 | 5012 days | 5% |
| Kevin Wong | 10/10 | 5012 days | 5% |
| Rocipon | 8/10 | 5013 days | 4% |
| Margit and Corein Groenevelt | 7/10 | 5016 days | 4% |
| Richard Dudfield | 10/10 | 5016 days | 5% |
| John Duffy | 10/10 | 5016 days | 5% |
| Richard Gallichan | 9/10 | 5017 days | 5% |
| Jean Barker | 8/10 | 5017 days | 4% |
| Bette Eh | 10/10 | 5019 days | 5% |
| bryfrance | 10/10 | 5020 days | 5% |
| Juliane Kleiu | 10/10 | 5020 days | 5% |
| Claudia | 8/10 | 5020 days | 4% |
| E Brockbank | 9/10 | 5021 days | 5% |
| David Mellard | 10/10 | 5022 days | 5% |
| Bruce & Elaine Chote | 10/10 | 5022 days | 5% |
| Roland Berger | 7/10 | 5023 days | 4% |
| Ross | 9/10 | 5023 days | 5% |
| Gerstmann | 9/10 | 5024 days | 5% |
| Ekhard Wittkugel | 10/10 | 5026 days | 5% |
| Stephen Shearer | 10/10 | 5027 days | 5% |
| Monika | 10/10 | 5028 days | 5% |
| Betten | 9/10 | 5029 days | 5% |
| Stephen Jones | 9/10 | 5030 days | 5% |
| Mike and Diane Baker | 10/10 | 5031 days | 5% |
| Lenore Dejong | 10/10 | 5032 days | 5% |
| Andreas Fritesche | 8/10 | 5033 days | 4% |
| Matthys Kikke | 9/10 | 5034 days | 5% |
| Bucher Weruer | 10/10 | 5034 days | 5% |
| Camilla Andersson | 7/10 | 5035 days | 4% |
| Bob Adams | 10/10 | 5042 days | 5% |
| John | 8/10 | 5042 days | 4% |
| Katie Nicol | 10/10 | 5043 days | 5% |
| Martin Current | 9/10 | 5045 days | 5% |
| Teum and Orselien | 8/10 | 5046 days | 4% |
| Vanderhorst | 8/10 | 5046 days | 4% |
| John Price | 9/10 | 5048 days | 5% |
| Doris Schollenberger | 10/10 | 5048 days | 5% |
| Phil Hunter | 9/10 | 5049 days | 5% |
| Chris | 8/10 | 5050 days | 4% |
| Gordon Daniels | 8/10 | 5053 days | 4% |
| Hull | 9/10 | 5053 days | 5% |
| Lizzie | 10/10 | 5120 days | 5% |
| allesca | 10/10 | 5150 days | 5% |
| M Schram | 8/10 | 5313 days | 4% |
| Versteeg | 9/10 | 5316 days | 5% |
| Lomas | 10/10 | 5325 days | 5% |
| Maureen | 10/10 | 5329 days | 5% |
| Amy | 9/10 | 5334 days | 5% |
| Don & Geraldine | 10/10 | 5370 days | 5% |
| Hans and Astrid | 10/10 | 5372 days | 5% |
| Agnes | 10/10 | 5374 days | 5% |
| maggie Webster | 10/10 | 5381 days | 5% |
| Keita-Karen Buchanan | 10/10 | 5381 days | 5% |
| Lars Taarnhoej | 7/10 | 5381 days | 4% |
| markus Brandenberger | 10/10 | 5382 days | 5% |
| Jvjm Family | 9/10 | 5383 days | 5% |
| David B | 7/10 | 5390 days | 4% |
| Margaret O'Sullivan | 8/10 | 5390 days | 4% |
| Chris el capitan | 9/10 | 5400 days | 5% |
| John Cox | 9/10 | 5401 days | 5% |
| Muller Weissert | 8/10 | 5402 days | 4% |
| Brian Morris | 9/10 | 5404 days | 5% |
| Jobbs | 10/10 | 5404 days | 5% |
| Maria Newton | 9/10 | 5405 days | 5% |
| Dieter Groscurth | 8/10 | 5405 days | 4% |
| Gordon and Joyce | 9/10 | 5405 days | 5% |
| Remko Ebbens | 9/10 | 5408 days | 5% |
| Thijs Schoemaker | 8/10 | 5409 days | 4% |
| Armand | 5/10 | 5409 days | 3% |
| Ferth | 10/10 | 5409 days | 5% |
| J Kempeneers | 10/10 | 5409 days | 5% |
| Thea X | 5/10 | 5418 days | 3% |
| Keith Wilde | 10/10 | 5418 days | 5% |
| Dick Rosman | 9/10 | 5419 days | 5% |
| Terry Phillips | 5/10 | 5420 days | 3% |
| Jules | 8/10 | 5420 days | 4% |
| Carl Diehl | 9/10 | 5421 days | 5% |
| Paul Schoepfer | 9/10 | 5421 days | 5% |
| Uwe Rieper | 10/10 | 5422 days | 5% |
| Yvonne Ing | 10/10 | 5422 days | 5% |
| Diane Chapple | 9/10 | 5422 days | 5% |
| wannab | 9/10 | 5423 days | 5% |
| Kevin and Teresa | 9/10 | 5423 days | 5% |
| Christiane Lindenberg | 9/10 | 5432 days | 5% |
| Nigel Armstrong | 9/10 | 5434 days | 5% |
| Buss | 10/10 | 5436 days | 5% |
| John J | 9/10 | 5437 days | 5% |
| Heinrich Hax | 10/10 | 5443 days | 5% |
| marcusba | 8/10 | 5466 days | 4% |
| tanh | 9/10 | 5470 days | 5% |
| mariak | 7/10 | 5471 days | 4% |
| Silvana Thom | 10/10 | 5495 days | 5% |
| Wolfgang Dittrich | 10/10 | 5495 days | 5% |
| Chris Bulman | 10/10 | 5496 days | 5% |
| andyge | 8/10 | 5515 days | 4% |
| Ritag | 9/10 | 5601 days | 5% |
| regw | 10/10 | 5605 days | 5% |
| Cate | 9/10 | 5729 days | 5% |
| ginekek | 9/10 | 5729 days | 5% |
| geoffelizabeth | 9/10 | 5729 days | 5% |
| mikestep | 9/10 | 5729 days | 5% |
| EllenorO | 10/10 | 5730 days | 5% |
| Van Lent | 9/10 | 5731 days | 5% |
| Anna | 10/10 | 5731 days | 5% |
| Mike | 9/10 | 5734 days | 5% |
| Richard | 10/10 | 5739 days | 5% |
| Michael Walsall | 10/10 | 5739 days | 5% |
| AstridVG | 8/10 | 5746 days | 4% |
| Christine | 9/10 | 5746 days | 5% |
| Peter | 9/10 | 5746 days | 5% |
| DimitriD | 5/10 | 5746 days | 3% |
| Kitty | 9/10 | 5746 days | 5% |
| Max | 10/10 | 5749 days | 5% |
| Andy Baker | 9/10 | 5749 days | 5% |
| Francesca Sabat | 8/10 | 5751 days | 4% |
| Robert | 10/10 | 5760 days | 5% |
| Melissa Gillespie | 10/10 | 5760 days | 5% |
| Hetty | 9/10 | 5761 days | 5% |
| Charles | 7/10 | 5762 days | 4% |
| Byleveld | 8/10 | 5762 days | 4% |
| JoseB | 8/10 | 5763 days | 4% |
| MrHebbard | 10/10 | 5763 days | 5% |
| ChristineM | 10/10 | 5763 days | 5% |
| Elrik frau | 10/10 | 5763 days | 5% |
| Louise | 9/10 | 5770 days | 5% |
| Douglas | 9/10 | 5771 days | 5% |
| CSander | 9/10 | 5787 days | 5% |
| Patricia | 8/10 | 5797 days | 4% |
| Dijk | 8/10 | 5802 days | 4% |
| Josefine | 10/10 | 5802 days | 5% |
| Ducolq | 5/10 | 5802 days | 3% |
| Jacques | 8/10 | 5802 days | 4% |
| Carina | 8/10 | 5808 days | 4% |
| Michael | 9/10 | 5839 days | 5% |
| silvia | 8/10 | 5842 days | 4% |
| Anouk | 8/10 | 5842 days | 4% |
| Mat | 9/10 | 5846 days | 5% |
| Paul | 8/10 | 5893 days | 4% |
| Helga | 9/10 | 5904 days | 5% |
| Mikel | 9/10 | 5969 days | 5% |
| Christine | 6/10 | 5978 days | 4% |
| Jim Summers | 9/10 | 5978 days | 5% |
| Franz | 7/10 | 6100 days | 4% |
| Linda and Peter | 10/10 | 6108 days | 5% |
| Mike and Judy | 8/10 | 6109 days | 4% |
| Methers | 9/10 | 6109 days | 5% |
| Denise | 10/10 | 6112 days | 5% |
| Kavanagh | 8/10 | 6112 days | 4% |
| De Wijn | 8/10 | 6115 days | 4% |
| Lisa Jones | 9/10 | 6116 days | 5% |
| Christian | 9/10 | 6116 days | 5% |
| Soren Danning | 8/10 | 6116 days | 4% |
| Jones | 10/10 | 6120 days | 5% |
| Orla Hansen | 10/10 | 6121 days | 5% |
| Bauer | 10/10 | 6127 days | 5% |
| Aharon | 10/10 | 6127 days | 5% |
| D.A. Mulder | 9/10 | 6128 days | 5% |
| Jurg Meister | 8/10 | 6129 days | 4% |
| Sally and David Wallis | 10/10 | 6129 days | 5% |
| Knol | 9/10 | 6130 days | 5% |
| Sue Randall | 8/10 | 6133 days | 4% |
| Cole Penelope | 10/10 | 6133 days | 5% |
| Blenkoe | 6/10 | 6134 days | 4% |
| Erwin de Kleijn | 8/10 | 6134 days | 4% |
| Thomas | 9/10 | 6143 days | 5% |
| Bex | 10/10 | 6157 days | 5% |
| Van Hoof | 9/10 | 6169 days | 5% |
| Tim | 10/10 | 6169 days | 5% |
| Gabriel Faber | 9/10 | 6204 days | 5% |
| Jonkers | 9/10 | 6206 days | 5% |
| Edwin | 10/10 | 6210 days | 5% |
| Lyn Saxon | 10/10 | 6214 days | 5% |
| Wendy Williams | 10/10 | 6221 days | 5% |
| Hans Knappmann | 10/10 | 6331 days | 5% |
| Phillipa | 10/10 | 6439 days | 5% |
| Stefan&Gerte | 9/10 | 6453 days | 5% |
| Cat | 9/10 | 6459 days | 5% |
| TeamFlorida | 10/10 | 6466 days | 5% |
| Jo | 9/10 | 6466 days | 5% |
| Fenke | 9/10 | 6471 days | 5% |
| Bas | 9/10 | 6471 days | 5% |
| Martin Smith | 9/10 | 6476 days | 5% |
| John Beirne | 9/10 | 6483 days | 5% |
| Palle | 9/10 | 6488 days | 5% |
| Anna | 9/10 | 6488 days | 5% |
| Svenja | 10/10 | 6494 days | 5% |
| Shirely | 10/10 | 6494 days | 5% |
| Rogier | 8/10 | 6495 days | 4% |
| Wendy | 8/10 | 6499 days | 4% |
| Kerry | 10/10 | 6504 days | 5% |
| Henrich | 10/10 | 6504 days | 5% |
| Messing | 10/10 | 6507 days | 5% |
| Rolf Kruger | 10/10 | 6507 days | 5% |
| Ian | 8/10 | 6511 days | 4% |
| Peter | 9/10 | 6511 days | 5% |
| Brian | 10/10 | 6511 days | 5% |
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
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
1.61% 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.