Hey, 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
90.13%
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 | 1295 days | 100% |
| Joanne&Ian | 10/10 | 1387 days | 76% |
| Geoff Steele | 8/10 | 2663 days | 15% |
| Axel and Patricia G | 6/10 | 2852 days | 12% |
| Leonie Westerhot | 8/10 | 2924 days | 13% |
| Ivanova R | 9/10 | 3181 days | 11% |
| Lorenz Pfisterer | 10/10 | 3193 days | 11% |
| Heidi et Mat | 8/10 | 3202 days | 10% |
| Anke Vater | 10/10 | 3203 days | 11% |
| Anouk Jongsma | 9/10 | 3211 days | 10% |
| Robin WUERFEL | 9/10 | 3283 days | 10% |
| Helen Parsons | 10/10 | 3603 days | 7% |
| Peter Beeloo | 9/10 | 3606 days | 7% |
| Laurent Arditi | 9/10 | 3791 days | 5% |
| Sheila Galpin | 9/10 | 3942 days | 4% |
| Simon Galpin | 9/10 | 3942 days | 4% |
| Douglas Dean | 10/10 | 3944 days | 4% |
| Stina Hultberg | 4/10 | 3948 days | 2% |
| Alexander Zimmer | 7/10 | 3949 days | 3% |
| Linus Larsson | 3/10 | 3950 days | 2% |
| Leon Courtney | 10/10 | 3951 days | 4% |
| Libby | 10/10 | 3965 days | 3% |
| Colin Billington | 7/10 | 3966 days | 3% |
| Don Wallis | 10/10 | 3969 days | 3% |
| Bill | 7/10 | 3970 days | 3% |
| Saskia | 5/10 | 3970 days | 2% |
| Terry Seaman | 8/10 | 3972 days | 3% |
| S B | 10/10 | 3985 days | 3% |
| M K | 10/10 | 3985 days | 3% |
| Alacchi Moustier | 10/10 | 3985 days | 3% |
| Maya Bakker-deDreu | 8/10 | 3993 days | 3% |
| Stuart Wilson | 8/10 | 3999 days | 3% |
| Fabian Lee | 5/10 | 4002 days | 2% |
| paul beacock | 10/10 | 4003 days | 3% |
| Gal Bero | 10/10 | 4006 days | 3% |
| Elly Zimmer | 6/10 | 4010 days | 3% |
| Bjorn Van Mulders | 10/10 | 4013 days | 3% |
| Kim Maertens | 9/10 | 4013 days | 3% |
| Steve Warren | 10/10 | 4125 days | 2% |
| hendrik king | 7/10 | 4217 days | 1% |
| Peter Jolliffe | 10/10 | 4309 days | 0% |
| Helen Dean | 10/10 | 4309 days | 0% |
| Dave Mertzig | 10/10 | 4309 days | 0% |
| Kathryn Pisco | 9/10 | 4315 days | 0% |
| Mike Pisco | 9/10 | 4315 days | 0% |
| Sebastian and Peter Beate | 10/10 | 4332 days | 0% |
| Fraser Goldsmith | 8/10 | 4333 days | 0% |
| Bucher | 9/10 | 4384 days | 4% |
| Marieke | 8/10 | 4385 days | 4% |
| Chew (Peter) | 7/10 | 4390 days | 4% |
| Natalie Nubler | 6/10 | 4391 days | 4% |
| Frans Derks | 9/10 | 4392 days | 4% |
| Meryem Buchwitz | 9/10 | 4412 days | 4% |
| roos wubben | 9/10 | 4415 days | 4% |
| Dagette | 9/10 | 4460 days | 4% |
| Teri C | 10/10 | 4490 days | 4% |
| Rob Klauer | 5/10 | 4662 days | 3% |
| Oliver Hardt | 9/10 | 4663 days | 4% |
| Val Phillips | 8/10 | 4667 days | 4% |
| Peter Adams | 9/10 | 4668 days | 4% |
| Harry Ruys | 8/10 | 4670 days | 4% |
| John McAllister | 9/10 | 4671 days | 4% |
| Keith Helen | 10/10 | 4674 days | 4% |
| Daniel Patricia | 9/10 | 4677 days | 4% |
| Laura Diepeveen | 8/10 | 4679 days | 4% |
| Fries | 10/10 | 4683 days | 4% |
| Karin Laurev | 10/10 | 4683 days | 4% |
| Gillian Rowe | 9/10 | 4684 days | 4% |
| Nigel Horrocks | 7/10 | 4684 days | 4% |
| Dieter Mangold | 10/10 | 4686 days | 4% |
| Lyn Deavin | 8/10 | 4686 days | 4% |
| Sabine & Stefan | 10/10 | 4687 days | 4% |
| Randewyk | 8/10 | 4687 days | 4% |
| Koster | 6/10 | 4689 days | 4% |
| Peter Aertssen | 7/10 | 4689 days | 4% |
| John A Jerome | 8/10 | 4689 days | 4% |
| Lynn Robinson | 10/10 | 4695 days | 4% |
| Heike | 9/10 | 4698 days | 4% |
| Robert MacLeod-Smith | 8/10 | 4699 days | 4% |
| Carel | 8/10 | 4700 days | 4% |
| Anna | 9/10 | 4701 days | 4% |
| Barrie Corless | 9/10 | 4702 days | 4% |
| Urban Reifler | 10/10 | 4714 days | 4% |
| Lyn Stainton | 10/10 | 4777 days | 4% |
| John & Vicki | 8/10 | 4781 days | 4% |
| jenckes | 9/10 | 4856 days | 4% |
| Debbie Smithers | 10/10 | 4998 days | 4% |
| Julie and Russ Charles | 10/10 | 5022 days | 4% |
| Kevin Wong | 10/10 | 5022 days | 4% |
| Rocipon | 8/10 | 5023 days | 4% |
| Margit and Corein Groenevelt | 7/10 | 5026 days | 4% |
| Richard Dudfield | 10/10 | 5026 days | 4% |
| John Duffy | 10/10 | 5026 days | 4% |
| Richard Gallichan | 9/10 | 5027 days | 4% |
| Jean Barker | 8/10 | 5027 days | 4% |
| Bette Eh | 10/10 | 5029 days | 4% |
| bryfrance | 10/10 | 5030 days | 4% |
| Juliane Kleiu | 10/10 | 5030 days | 4% |
| Claudia | 8/10 | 5030 days | 4% |
| E Brockbank | 9/10 | 5031 days | 4% |
| David Mellard | 10/10 | 5032 days | 4% |
| Bruce & Elaine Chote | 10/10 | 5032 days | 4% |
| Roland Berger | 7/10 | 5033 days | 4% |
| Ross | 9/10 | 5033 days | 4% |
| Gerstmann | 9/10 | 5034 days | 4% |
| Ekhard Wittkugel | 10/10 | 5036 days | 4% |
| Stephen Shearer | 10/10 | 5037 days | 4% |
| Monika | 10/10 | 5038 days | 4% |
| Betten | 9/10 | 5039 days | 4% |
| Stephen Jones | 9/10 | 5040 days | 4% |
| Mike and Diane Baker | 10/10 | 5041 days | 4% |
| Lenore Dejong | 10/10 | 5042 days | 4% |
| Andreas Fritesche | 8/10 | 5043 days | 4% |
| Matthys Kikke | 9/10 | 5044 days | 4% |
| Bucher Weruer | 10/10 | 5044 days | 4% |
| Camilla Andersson | 7/10 | 5045 days | 4% |
| Bob Adams | 10/10 | 5052 days | 4% |
| John | 8/10 | 5052 days | 4% |
| Katie Nicol | 10/10 | 5053 days | 4% |
| Martin Current | 9/10 | 5055 days | 4% |
| Teum and Orselien | 8/10 | 5056 days | 4% |
| Vanderhorst | 8/10 | 5056 days | 4% |
| John Price | 9/10 | 5058 days | 4% |
| Doris Schollenberger | 10/10 | 5058 days | 4% |
| Phil Hunter | 9/10 | 5059 days | 4% |
| Chris | 8/10 | 5060 days | 4% |
| Gordon Daniels | 8/10 | 5063 days | 4% |
| Hull | 9/10 | 5063 days | 4% |
| Lizzie | 10/10 | 5130 days | 4% |
| allesca | 10/10 | 5160 days | 4% |
| M Schram | 8/10 | 5323 days | 4% |
| Versteeg | 9/10 | 5326 days | 4% |
| Lomas | 10/10 | 5335 days | 4% |
| Maureen | 10/10 | 5339 days | 4% |
| Amy | 9/10 | 5344 days | 4% |
| Don & Geraldine | 10/10 | 5380 days | 4% |
| Hans and Astrid | 10/10 | 5382 days | 4% |
| Agnes | 10/10 | 5384 days | 4% |
| maggie Webster | 10/10 | 5391 days | 4% |
| Keita-Karen Buchanan | 10/10 | 5391 days | 4% |
| Lars Taarnhoej | 7/10 | 5391 days | 4% |
| markus Brandenberger | 10/10 | 5392 days | 4% |
| Jvjm Family | 9/10 | 5393 days | 4% |
| David B | 7/10 | 5400 days | 4% |
| Margaret O'Sullivan | 8/10 | 5400 days | 4% |
| Chris el capitan | 9/10 | 5410 days | 4% |
| John Cox | 9/10 | 5411 days | 4% |
| Muller Weissert | 8/10 | 5412 days | 4% |
| Brian Morris | 9/10 | 5414 days | 4% |
| Jobbs | 10/10 | 5414 days | 4% |
| Maria Newton | 9/10 | 5415 days | 4% |
| Dieter Groscurth | 8/10 | 5415 days | 4% |
| Gordon and Joyce | 9/10 | 5415 days | 4% |
| Remko Ebbens | 9/10 | 5418 days | 4% |
| Thijs Schoemaker | 8/10 | 5419 days | 4% |
| Armand | 5/10 | 5419 days | 3% |
| Ferth | 10/10 | 5419 days | 4% |
| J Kempeneers | 10/10 | 5419 days | 4% |
| Thea X | 5/10 | 5428 days | 3% |
| Keith Wilde | 10/10 | 5428 days | 4% |
| Dick Rosman | 9/10 | 5429 days | 4% |
| Terry Phillips | 5/10 | 5430 days | 3% |
| Jules | 8/10 | 5430 days | 4% |
| Carl Diehl | 9/10 | 5431 days | 4% |
| Paul Schoepfer | 9/10 | 5431 days | 4% |
| Uwe Rieper | 10/10 | 5432 days | 4% |
| Yvonne Ing | 10/10 | 5432 days | 4% |
| Diane Chapple | 9/10 | 5432 days | 4% |
| wannab | 9/10 | 5433 days | 4% |
| Kevin and Teresa | 9/10 | 5433 days | 4% |
| Christiane Lindenberg | 9/10 | 5442 days | 4% |
| Nigel Armstrong | 9/10 | 5444 days | 4% |
| Buss | 10/10 | 5446 days | 4% |
| John J | 9/10 | 5447 days | 4% |
| Heinrich Hax | 10/10 | 5453 days | 4% |
| marcusba | 8/10 | 5476 days | 4% |
| tanh | 9/10 | 5480 days | 4% |
| mariak | 7/10 | 5481 days | 4% |
| Silvana Thom | 10/10 | 5505 days | 4% |
| Wolfgang Dittrich | 10/10 | 5505 days | 4% |
| Chris Bulman | 10/10 | 5506 days | 4% |
| andyge | 8/10 | 5525 days | 4% |
| Ritag | 9/10 | 5611 days | 4% |
| regw | 10/10 | 5615 days | 4% |
| Cate | 9/10 | 5738 days | 4% |
| ginekek | 9/10 | 5739 days | 4% |
| geoffelizabeth | 9/10 | 5739 days | 4% |
| mikestep | 9/10 | 5739 days | 4% |
| EllenorO | 10/10 | 5739 days | 4% |
| Van Lent | 9/10 | 5740 days | 4% |
| Anna | 10/10 | 5740 days | 4% |
| Mike | 9/10 | 5743 days | 4% |
| Richard | 10/10 | 5748 days | 4% |
| Michael Walsall | 10/10 | 5749 days | 4% |
| AstridVG | 8/10 | 5755 days | 4% |
| Christine | 9/10 | 5755 days | 4% |
| Peter | 9/10 | 5755 days | 4% |
| DimitriD | 5/10 | 5756 days | 3% |
| Kitty | 9/10 | 5756 days | 4% |
| Max | 10/10 | 5758 days | 4% |
| Andy Baker | 9/10 | 5759 days | 4% |
| Francesca Sabat | 8/10 | 5761 days | 4% |
| Robert | 10/10 | 5769 days | 4% |
| Melissa Gillespie | 10/10 | 5770 days | 4% |
| Hetty | 9/10 | 5770 days | 4% |
| Charles | 7/10 | 5771 days | 4% |
| Byleveld | 8/10 | 5772 days | 4% |
| JoseB | 8/10 | 5773 days | 4% |
| MrHebbard | 10/10 | 5773 days | 4% |
| ChristineM | 10/10 | 5773 days | 4% |
| Elrik frau | 10/10 | 5773 days | 4% |
| Louise | 9/10 | 5779 days | 4% |
| Douglas | 9/10 | 5780 days | 4% |
| CSander | 9/10 | 5797 days | 4% |
| Patricia | 8/10 | 5807 days | 4% |
| Dijk | 8/10 | 5811 days | 4% |
| Josefine | 10/10 | 5811 days | 4% |
| Ducolq | 5/10 | 5811 days | 3% |
| Jacques | 8/10 | 5812 days | 4% |
| Carina | 8/10 | 5817 days | 4% |
| Michael | 9/10 | 5849 days | 4% |
| silvia | 8/10 | 5851 days | 4% |
| Anouk | 8/10 | 5851 days | 4% |
| Mat | 9/10 | 5856 days | 4% |
| Paul | 8/10 | 5903 days | 4% |
| Helga | 9/10 | 5913 days | 4% |
| Mikel | 9/10 | 5978 days | 4% |
| Christine | 6/10 | 5987 days | 4% |
| Jim Summers | 9/10 | 5987 days | 4% |
| Franz | 7/10 | 6110 days | 4% |
| Linda and Peter | 10/10 | 6118 days | 4% |
| Mike and Judy | 8/10 | 6119 days | 4% |
| Methers | 9/10 | 6119 days | 4% |
| Denise | 10/10 | 6122 days | 4% |
| Kavanagh | 8/10 | 6122 days | 4% |
| De Wijn | 8/10 | 6125 days | 4% |
| Lisa Jones | 9/10 | 6126 days | 4% |
| Christian | 9/10 | 6126 days | 4% |
| Soren Danning | 8/10 | 6126 days | 4% |
| Jones | 10/10 | 6130 days | 4% |
| Orla Hansen | 10/10 | 6131 days | 4% |
| Bauer | 10/10 | 6137 days | 4% |
| Aharon | 10/10 | 6137 days | 4% |
| D.A. Mulder | 9/10 | 6138 days | 4% |
| Jurg Meister | 8/10 | 6139 days | 4% |
| Sally and David Wallis | 10/10 | 6139 days | 4% |
| Knol | 9/10 | 6140 days | 4% |
| Sue Randall | 8/10 | 6143 days | 4% |
| Cole Penelope | 10/10 | 6143 days | 4% |
| Blenkoe | 6/10 | 6144 days | 4% |
| Erwin de Kleijn | 8/10 | 6144 days | 4% |
| Thomas | 9/10 | 6153 days | 4% |
| Bex | 10/10 | 6166 days | 4% |
| Van Hoof | 9/10 | 6179 days | 4% |
| Tim | 10/10 | 6179 days | 4% |
| Gabriel Faber | 9/10 | 6214 days | 4% |
| Jonkers | 9/10 | 6216 days | 4% |
| Edwin | 10/10 | 6220 days | 4% |
| Lyn Saxon | 10/10 | 6224 days | 4% |
| Wendy Williams | 10/10 | 6231 days | 4% |
| Hans Knappmann | 10/10 | 6341 days | 4% |
| Phillipa | 10/10 | 6449 days | 4% |
| Stefan&Gerte | 9/10 | 6463 days | 4% |
| Cat | 9/10 | 6469 days | 4% |
| TeamFlorida | 10/10 | 6476 days | 4% |
| Jo | 9/10 | 6476 days | 4% |
| Fenke | 9/10 | 6481 days | 4% |
| Bas | 9/10 | 6481 days | 4% |
| Martin Smith | 9/10 | 6486 days | 4% |
| John Beirne | 9/10 | 6493 days | 4% |
| Palle | 9/10 | 6498 days | 4% |
| Anna | 9/10 | 6498 days | 4% |
| Svenja | 10/10 | 6504 days | 4% |
| Shirely | 10/10 | 6504 days | 4% |
| Rogier | 8/10 | 6505 days | 4% |
| Wendy | 8/10 | 6509 days | 4% |
| Kerry | 10/10 | 6514 days | 4% |
| Henrich | 10/10 | 6514 days | 4% |
| Messing | 10/10 | 6517 days | 4% |
| Rolf Kruger | 10/10 | 6517 days | 4% |
| Ian | 8/10 | 6521 days | 4% |
| Peter | 9/10 | 6521 days | 4% |
| Brian | 10/10 | 6521 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 Doubtful Sound Day Cruise experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.05% 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 | -3.99% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 201 | -4.07% |
| 202 | -4.09% |
| 203 | -4.11% |
| … | … |
Balancing Adjustment
1.62% 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.