G'day, 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
89.57%
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 | 1684 days | 100% |
| Joanne&Ian | 10/10 | 1776 days | 84% |
| Geoff Steele | 8/10 | 3053 days | 41% |
| Axel and Patricia G | 6/10 | 3241 days | 31% |
| Leonie Westerhot | 8/10 | 3313 days | 33% |
| Ivanova R | 9/10 | 3570 days | 25% |
| Lorenz Pfisterer | 10/10 | 3582 days | 25% |
| Heidi et Mat | 8/10 | 3591 days | 25% |
| Anke Vater | 10/10 | 3592 days | 25% |
| Anouk Jongsma | 9/10 | 3600 days | 24% |
| Robin WUERFEL | 9/10 | 3672 days | 22% |
| Helen Parsons | 10/10 | 3992 days | 12% |
| Peter Beeloo | 9/10 | 3996 days | 12% |
| Laurent Arditi | 9/10 | 4180 days | 6% |
| Sheila Galpin | 9/10 | 4331 days | 1% |
| Simon Galpin | 9/10 | 4331 days | 1% |
| Douglas Dean | 10/10 | 4333 days | 1% |
| Stina Hultberg | 4/10 | 4337 days | 1% |
| Alexander Zimmer | 7/10 | 4338 days | 1% |
| Linus Larsson | 3/10 | 4339 days | 1% |
| Leon Courtney | 10/10 | 4340 days | 1% |
| Libby | 10/10 | 4354 days | 1% |
| Colin Billington | 7/10 | 4355 days | 1% |
| Don Wallis | 10/10 | 4358 days | 1% |
| Bill | 7/10 | 4359 days | 0% |
| Saskia | 5/10 | 4359 days | 0% |
| Terry Seaman | 8/10 | 4361 days | 0% |
| S B | 10/10 | 4374 days | 0% |
| M K | 10/10 | 4374 days | 0% |
| Alacchi Moustier | 10/10 | 4374 days | 0% |
| Maya Bakker-deDreu | 8/10 | 4382 days | 16% |
| Stuart Wilson | 8/10 | 4388 days | 16% |
| Fabian Lee | 5/10 | 4391 days | 12% |
| paul beacock | 10/10 | 4392 days | 16% |
| Gal Bero | 10/10 | 4395 days | 16% |
| Elly Zimmer | 6/10 | 4399 days | 14% |
| Bjorn Van Mulders | 10/10 | 4402 days | 16% |
| Kim Maertens | 9/10 | 4402 days | 16% |
| Steve Warren | 10/10 | 4514 days | 16% |
| hendrik king | 7/10 | 4606 days | 15% |
| Peter Jolliffe | 10/10 | 4698 days | 16% |
| Helen Dean | 10/10 | 4698 days | 16% |
| Dave Mertzig | 10/10 | 4698 days | 16% |
| Kathryn Pisco | 9/10 | 4704 days | 16% |
| Mike Pisco | 9/10 | 4704 days | 16% |
| Sebastian and Peter Beate | 10/10 | 4721 days | 16% |
| Fraser Goldsmith | 8/10 | 4722 days | 16% |
| Bucher | 9/10 | 4773 days | 16% |
| Marieke | 8/10 | 4774 days | 16% |
| Chew (Peter) | 7/10 | 4779 days | 15% |
| Natalie Nubler | 6/10 | 4780 days | 14% |
| Frans Derks | 9/10 | 4781 days | 16% |
| Meryem Buchwitz | 9/10 | 4801 days | 16% |
| roos wubben | 9/10 | 4804 days | 16% |
| Dagette | 9/10 | 4849 days | 16% |
| Teri C | 10/10 | 4879 days | 16% |
| Rob Klauer | 5/10 | 5051 days | 12% |
| Oliver Hardt | 9/10 | 5052 days | 16% |
| Val Phillips | 8/10 | 5056 days | 16% |
| Peter Adams | 9/10 | 5057 days | 16% |
| Harry Ruys | 8/10 | 5059 days | 16% |
| John McAllister | 9/10 | 5060 days | 16% |
| Keith Helen | 10/10 | 5063 days | 16% |
| Daniel Patricia | 9/10 | 5066 days | 16% |
| Laura Diepeveen | 8/10 | 5068 days | 16% |
| Fries | 10/10 | 5072 days | 16% |
| Karin Laurev | 10/10 | 5072 days | 16% |
| Gillian Rowe | 9/10 | 5073 days | 16% |
| Nigel Horrocks | 7/10 | 5073 days | 15% |
| Dieter Mangold | 10/10 | 5075 days | 16% |
| Lyn Deavin | 8/10 | 5075 days | 16% |
| Sabine & Stefan | 10/10 | 5076 days | 16% |
| Randewyk | 8/10 | 5076 days | 16% |
| Koster | 6/10 | 5078 days | 14% |
| Peter Aertssen | 7/10 | 5078 days | 15% |
| John A Jerome | 8/10 | 5078 days | 16% |
| Lynn Robinson | 10/10 | 5084 days | 16% |
| Heike | 9/10 | 5087 days | 16% |
| Robert MacLeod-Smith | 8/10 | 5088 days | 16% |
| Carel | 8/10 | 5089 days | 16% |
| Anna | 9/10 | 5090 days | 16% |
| Barrie Corless | 9/10 | 5091 days | 16% |
| Urban Reifler | 10/10 | 5103 days | 16% |
| Lyn Stainton | 10/10 | 5166 days | 16% |
| John & Vicki | 8/10 | 5170 days | 16% |
| jenckes | 9/10 | 5245 days | 16% |
| Debbie Smithers | 10/10 | 5387 days | 16% |
| Julie and Russ Charles | 10/10 | 5411 days | 16% |
| Kevin Wong | 10/10 | 5411 days | 16% |
| Rocipon | 8/10 | 5412 days | 16% |
| Margit and Corein Groenevelt | 7/10 | 5415 days | 15% |
| Richard Dudfield | 10/10 | 5415 days | 16% |
| John Duffy | 10/10 | 5415 days | 16% |
| Richard Gallichan | 9/10 | 5416 days | 16% |
| Jean Barker | 8/10 | 5416 days | 16% |
| Bette Eh | 10/10 | 5418 days | 16% |
| bryfrance | 10/10 | 5419 days | 16% |
| Juliane Kleiu | 10/10 | 5419 days | 16% |
| Claudia | 8/10 | 5419 days | 16% |
| E Brockbank | 9/10 | 5420 days | 16% |
| David Mellard | 10/10 | 5421 days | 16% |
| Bruce & Elaine Chote | 10/10 | 5421 days | 16% |
| Roland Berger | 7/10 | 5422 days | 15% |
| Ross | 9/10 | 5422 days | 16% |
| Gerstmann | 9/10 | 5423 days | 16% |
| Ekhard Wittkugel | 10/10 | 5425 days | 16% |
| Stephen Shearer | 10/10 | 5426 days | 16% |
| Monika | 10/10 | 5427 days | 16% |
| Betten | 9/10 | 5428 days | 16% |
| Stephen Jones | 9/10 | 5429 days | 16% |
| Mike and Diane Baker | 10/10 | 5430 days | 16% |
| Lenore Dejong | 10/10 | 5431 days | 16% |
| Andreas Fritesche | 8/10 | 5432 days | 16% |
| Matthys Kikke | 9/10 | 5433 days | 16% |
| Bucher Weruer | 10/10 | 5433 days | 16% |
| Camilla Andersson | 7/10 | 5434 days | 15% |
| Bob Adams | 10/10 | 5441 days | 16% |
| John | 8/10 | 5441 days | 16% |
| Katie Nicol | 10/10 | 5442 days | 16% |
| Martin Current | 9/10 | 5444 days | 16% |
| Teum and Orselien | 8/10 | 5445 days | 16% |
| Vanderhorst | 8/10 | 5445 days | 16% |
| John Price | 9/10 | 5447 days | 16% |
| Doris Schollenberger | 10/10 | 5447 days | 16% |
| Phil Hunter | 9/10 | 5448 days | 16% |
| Chris | 8/10 | 5449 days | 16% |
| Gordon Daniels | 8/10 | 5452 days | 16% |
| Hull | 9/10 | 5452 days | 16% |
| Lizzie | 10/10 | 5519 days | 16% |
| allesca | 10/10 | 5549 days | 16% |
| M Schram | 8/10 | 5712 days | 16% |
| Versteeg | 9/10 | 5715 days | 16% |
| Lomas | 10/10 | 5724 days | 16% |
| Maureen | 10/10 | 5728 days | 16% |
| Amy | 9/10 | 5733 days | 16% |
| Don & Geraldine | 10/10 | 5769 days | 16% |
| Hans and Astrid | 10/10 | 5771 days | 16% |
| Agnes | 10/10 | 5773 days | 16% |
| maggie Webster | 10/10 | 5780 days | 16% |
| Keita-Karen Buchanan | 10/10 | 5780 days | 16% |
| Lars Taarnhoej | 7/10 | 5780 days | 15% |
| markus Brandenberger | 10/10 | 5781 days | 16% |
| Jvjm Family | 9/10 | 5782 days | 16% |
| David B | 7/10 | 5789 days | 15% |
| Margaret O'Sullivan | 8/10 | 5789 days | 16% |
| Chris el capitan | 9/10 | 5799 days | 16% |
| John Cox | 9/10 | 5800 days | 16% |
| Muller Weissert | 8/10 | 5801 days | 16% |
| Brian Morris | 9/10 | 5803 days | 16% |
| Jobbs | 10/10 | 5803 days | 16% |
| Maria Newton | 9/10 | 5804 days | 16% |
| Dieter Groscurth | 8/10 | 5804 days | 16% |
| Gordon and Joyce | 9/10 | 5804 days | 16% |
| Remko Ebbens | 9/10 | 5807 days | 16% |
| Thijs Schoemaker | 8/10 | 5808 days | 16% |
| Armand | 5/10 | 5808 days | 12% |
| Ferth | 10/10 | 5808 days | 16% |
| J Kempeneers | 10/10 | 5808 days | 16% |
| Thea X | 5/10 | 5817 days | 12% |
| Keith Wilde | 10/10 | 5817 days | 16% |
| Dick Rosman | 9/10 | 5818 days | 16% |
| Terry Phillips | 5/10 | 5819 days | 12% |
| Jules | 8/10 | 5819 days | 16% |
| Carl Diehl | 9/10 | 5820 days | 16% |
| Paul Schoepfer | 9/10 | 5820 days | 16% |
| Uwe Rieper | 10/10 | 5821 days | 16% |
| Yvonne Ing | 10/10 | 5821 days | 16% |
| Diane Chapple | 9/10 | 5821 days | 16% |
| wannab | 9/10 | 5822 days | 16% |
| Kevin and Teresa | 9/10 | 5822 days | 16% |
| Christiane Lindenberg | 9/10 | 5831 days | 16% |
| Nigel Armstrong | 9/10 | 5833 days | 16% |
| Buss | 10/10 | 5835 days | 16% |
| John J | 9/10 | 5836 days | 16% |
| Heinrich Hax | 10/10 | 5842 days | 16% |
| marcusba | 8/10 | 5865 days | 16% |
| tanh | 9/10 | 5869 days | 16% |
| mariak | 7/10 | 5870 days | 15% |
| Silvana Thom | 10/10 | 5894 days | 16% |
| Wolfgang Dittrich | 10/10 | 5894 days | 16% |
| Chris Bulman | 10/10 | 5895 days | 16% |
| andyge | 8/10 | 5914 days | 16% |
| Ritag | 9/10 | 6000 days | 16% |
| regw | 10/10 | 6004 days | 16% |
| Cate | 9/10 | 6128 days | 16% |
| ginekek | 9/10 | 6128 days | 16% |
| geoffelizabeth | 9/10 | 6128 days | 16% |
| mikestep | 9/10 | 6128 days | 16% |
| EllenorO | 10/10 | 6129 days | 16% |
| Van Lent | 9/10 | 6130 days | 16% |
| Anna | 10/10 | 6130 days | 16% |
| Mike | 9/10 | 6132 days | 16% |
| Richard | 10/10 | 6138 days | 16% |
| Michael Walsall | 10/10 | 6138 days | 16% |
| AstridVG | 8/10 | 6145 days | 16% |
| Christine | 9/10 | 6145 days | 16% |
| Peter | 9/10 | 6145 days | 16% |
| DimitriD | 5/10 | 6145 days | 12% |
| Kitty | 9/10 | 6145 days | 16% |
| Max | 10/10 | 6148 days | 16% |
| Andy Baker | 9/10 | 6148 days | 16% |
| Francesca Sabat | 8/10 | 6150 days | 16% |
| Robert | 10/10 | 6159 days | 16% |
| Melissa Gillespie | 10/10 | 6159 days | 16% |
| Hetty | 9/10 | 6160 days | 16% |
| Charles | 7/10 | 6161 days | 15% |
| Byleveld | 8/10 | 6161 days | 16% |
| JoseB | 8/10 | 6162 days | 16% |
| MrHebbard | 10/10 | 6162 days | 16% |
| ChristineM | 10/10 | 6162 days | 16% |
| Elrik frau | 10/10 | 6162 days | 16% |
| Louise | 9/10 | 6169 days | 16% |
| Douglas | 9/10 | 6170 days | 16% |
| CSander | 9/10 | 6186 days | 16% |
| Patricia | 8/10 | 6196 days | 16% |
| Dijk | 8/10 | 6200 days | 16% |
| Josefine | 10/10 | 6201 days | 16% |
| Ducolq | 5/10 | 6201 days | 12% |
| Jacques | 8/10 | 6201 days | 16% |
| Carina | 8/10 | 6207 days | 16% |
| Michael | 9/10 | 6238 days | 16% |
| silvia | 8/10 | 6241 days | 16% |
| Anouk | 8/10 | 6241 days | 16% |
| Mat | 9/10 | 6245 days | 16% |
| Paul | 8/10 | 6292 days | 16% |
| Helga | 9/10 | 6303 days | 16% |
| Mikel | 9/10 | 6368 days | 16% |
| Christine | 6/10 | 6377 days | 14% |
| Jim Summers | 9/10 | 6377 days | 16% |
| Franz | 7/10 | 6499 days | 15% |
| Linda and Peter | 10/10 | 6507 days | 16% |
| Mike and Judy | 8/10 | 6508 days | 16% |
| Methers | 9/10 | 6508 days | 16% |
| Denise | 10/10 | 6511 days | 16% |
| Kavanagh | 8/10 | 6511 days | 16% |
| De Wijn | 8/10 | 6514 days | 16% |
| Lisa Jones | 9/10 | 6515 days | 16% |
| Christian | 9/10 | 6515 days | 16% |
| Soren Danning | 8/10 | 6515 days | 16% |
| Jones | 10/10 | 6519 days | 16% |
| Orla Hansen | 10/10 | 6520 days | 16% |
| Bauer | 10/10 | 6526 days | 16% |
| Aharon | 10/10 | 6526 days | 16% |
| D.A. Mulder | 9/10 | 6527 days | 16% |
| Jurg Meister | 8/10 | 6528 days | 16% |
| Sally and David Wallis | 10/10 | 6528 days | 16% |
| Knol | 9/10 | 6529 days | 16% |
| Sue Randall | 8/10 | 6532 days | 16% |
| Cole Penelope | 10/10 | 6532 days | 16% |
| Blenkoe | 6/10 | 6533 days | 14% |
| Erwin de Kleijn | 8/10 | 6533 days | 16% |
| Thomas | 9/10 | 6542 days | 16% |
| Bex | 10/10 | 6556 days | 16% |
| Van Hoof | 9/10 | 6568 days | 16% |
| Tim | 10/10 | 6568 days | 16% |
| Gabriel Faber | 9/10 | 6603 days | 16% |
| Jonkers | 9/10 | 6605 days | 16% |
| Edwin | 10/10 | 6609 days | 16% |
| Lyn Saxon | 10/10 | 6613 days | 16% |
| Wendy Williams | 10/10 | 6620 days | 16% |
| Hans Knappmann | 10/10 | 6730 days | 16% |
| Phillipa | 10/10 | 6838 days | 16% |
| Stefan&Gerte | 9/10 | 6852 days | 16% |
| Cat | 9/10 | 6858 days | 16% |
| TeamFlorida | 10/10 | 6865 days | 16% |
| Jo | 9/10 | 6865 days | 16% |
| Fenke | 9/10 | 6870 days | 16% |
| Bas | 9/10 | 6870 days | 16% |
| Martin Smith | 9/10 | 6875 days | 16% |
| John Beirne | 9/10 | 6882 days | 16% |
| Palle | 9/10 | 6887 days | 16% |
| Anna | 9/10 | 6887 days | 16% |
| Svenja | 10/10 | 6893 days | 16% |
| Shirely | 10/10 | 6893 days | 16% |
| Rogier | 8/10 | 6894 days | 16% |
| Wendy | 8/10 | 6898 days | 16% |
| Kerry | 10/10 | 6903 days | 16% |
| Henrich | 10/10 | 6903 days | 16% |
| Messing | 10/10 | 6906 days | 16% |
| Rolf Kruger | 10/10 | 6906 days | 16% |
| Ian | 8/10 | 6910 days | 16% |
| Peter | 9/10 | 6910 days | 16% |
| Brian | 10/10 | 6910 days | 16% |
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 44 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
1.72% 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
87%
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.