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
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
89.72%
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 | 1660 days | 100% |
| Joanne&Ian | 10/10 | 1753 days | 81% |
| Geoff Steele | 8/10 | 3029 days | 40% |
| Axel and Patricia G | 6/10 | 3218 days | 30% |
| Leonie Westerhot | 8/10 | 3290 days | 32% |
| Ivanova R | 9/10 | 3547 days | 25% |
| Lorenz Pfisterer | 10/10 | 3559 days | 24% |
| Heidi et Mat | 8/10 | 3568 days | 24% |
| Anke Vater | 10/10 | 3569 days | 24% |
| Anouk Jongsma | 9/10 | 3577 days | 24% |
| Robin WUERFEL | 9/10 | 3649 days | 22% |
| Helen Parsons | 10/10 | 3969 days | 12% |
| Peter Beeloo | 9/10 | 3972 days | 12% |
| Laurent Arditi | 9/10 | 4156 days | 7% |
| Sheila Galpin | 9/10 | 4308 days | 2% |
| Simon Galpin | 9/10 | 4308 days | 2% |
| Douglas Dean | 10/10 | 4310 days | 2% |
| Stina Hultberg | 4/10 | 4314 days | 1% |
| Alexander Zimmer | 7/10 | 4315 days | 2% |
| Linus Larsson | 3/10 | 4316 days | 1% |
| Leon Courtney | 10/10 | 4317 days | 2% |
| Libby | 10/10 | 4331 days | 1% |
| Colin Billington | 7/10 | 4332 days | 1% |
| Don Wallis | 10/10 | 4335 days | 1% |
| Bill | 7/10 | 4336 days | 1% |
| Saskia | 5/10 | 4336 days | 1% |
| Terry Seaman | 8/10 | 4338 days | 1% |
| S B | 10/10 | 4351 days | 1% |
| M K | 10/10 | 4351 days | 1% |
| Alacchi Moustier | 10/10 | 4351 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4359 days | 1% |
| Stuart Wilson | 8/10 | 4365 days | 0% |
| Fabian Lee | 5/10 | 4368 days | 0% |
| paul beacock | 10/10 | 4369 days | 0% |
| Gal Bero | 10/10 | 4372 days | 0% |
| Elly Zimmer | 6/10 | 4376 days | 0% |
| Bjorn Van Mulders | 10/10 | 4379 days | 0% |
| Kim Maertens | 9/10 | 4379 days | 0% |
| Steve Warren | 10/10 | 4490 days | 15% |
| hendrik king | 7/10 | 4582 days | 14% |
| Peter Jolliffe | 10/10 | 4675 days | 15% |
| Helen Dean | 10/10 | 4675 days | 15% |
| Dave Mertzig | 10/10 | 4675 days | 15% |
| Kathryn Pisco | 9/10 | 4681 days | 15% |
| Mike Pisco | 9/10 | 4681 days | 15% |
| Sebastian and Peter Beate | 10/10 | 4698 days | 15% |
| Fraser Goldsmith | 8/10 | 4699 days | 15% |
| Bucher | 9/10 | 4750 days | 15% |
| Marieke | 8/10 | 4751 days | 15% |
| Chew (Peter) | 7/10 | 4756 days | 14% |
| Natalie Nubler | 6/10 | 4757 days | 13% |
| Frans Derks | 9/10 | 4758 days | 15% |
| Meryem Buchwitz | 9/10 | 4778 days | 15% |
| roos wubben | 9/10 | 4781 days | 15% |
| Dagette | 9/10 | 4826 days | 15% |
| Teri C | 10/10 | 4855 days | 15% |
| Rob Klauer | 5/10 | 5028 days | 12% |
| Oliver Hardt | 9/10 | 5029 days | 15% |
| Val Phillips | 8/10 | 5033 days | 15% |
| Peter Adams | 9/10 | 5034 days | 15% |
| Harry Ruys | 8/10 | 5036 days | 15% |
| John McAllister | 9/10 | 5037 days | 15% |
| Keith Helen | 10/10 | 5040 days | 15% |
| Daniel Patricia | 9/10 | 5043 days | 15% |
| Laura Diepeveen | 8/10 | 5045 days | 15% |
| Fries | 10/10 | 5049 days | 15% |
| Karin Laurev | 10/10 | 5049 days | 15% |
| Gillian Rowe | 9/10 | 5050 days | 15% |
| Nigel Horrocks | 7/10 | 5050 days | 14% |
| Dieter Mangold | 10/10 | 5052 days | 15% |
| Lyn Deavin | 8/10 | 5052 days | 15% |
| Sabine & Stefan | 10/10 | 5053 days | 15% |
| Randewyk | 8/10 | 5053 days | 15% |
| Koster | 6/10 | 5055 days | 13% |
| Peter Aertssen | 7/10 | 5055 days | 14% |
| John A Jerome | 8/10 | 5055 days | 15% |
| Lynn Robinson | 10/10 | 5061 days | 15% |
| Heike | 9/10 | 5064 days | 15% |
| Robert MacLeod-Smith | 8/10 | 5065 days | 15% |
| Carel | 8/10 | 5066 days | 15% |
| Anna | 9/10 | 5067 days | 15% |
| Barrie Corless | 9/10 | 5068 days | 15% |
| Urban Reifler | 10/10 | 5080 days | 15% |
| Lyn Stainton | 10/10 | 5143 days | 15% |
| John & Vicki | 8/10 | 5147 days | 15% |
| jenckes | 9/10 | 5221 days | 15% |
| Debbie Smithers | 10/10 | 5363 days | 15% |
| Julie and Russ Charles | 10/10 | 5388 days | 15% |
| Kevin Wong | 10/10 | 5388 days | 15% |
| Rocipon | 8/10 | 5389 days | 15% |
| Margit and Corein Groenevelt | 7/10 | 5392 days | 14% |
| Richard Dudfield | 10/10 | 5392 days | 15% |
| John Duffy | 10/10 | 5392 days | 15% |
| Richard Gallichan | 9/10 | 5393 days | 15% |
| Jean Barker | 8/10 | 5393 days | 15% |
| Bette Eh | 10/10 | 5395 days | 15% |
| bryfrance | 10/10 | 5396 days | 15% |
| Juliane Kleiu | 10/10 | 5396 days | 15% |
| Claudia | 8/10 | 5396 days | 15% |
| E Brockbank | 9/10 | 5397 days | 15% |
| David Mellard | 10/10 | 5398 days | 15% |
| Bruce & Elaine Chote | 10/10 | 5398 days | 15% |
| Roland Berger | 7/10 | 5399 days | 14% |
| Ross | 9/10 | 5399 days | 15% |
| Gerstmann | 9/10 | 5400 days | 15% |
| Ekhard Wittkugel | 10/10 | 5402 days | 15% |
| Stephen Shearer | 10/10 | 5403 days | 15% |
| Monika | 10/10 | 5404 days | 15% |
| Betten | 9/10 | 5405 days | 15% |
| Stephen Jones | 9/10 | 5406 days | 15% |
| Mike and Diane Baker | 10/10 | 5407 days | 15% |
| Lenore Dejong | 10/10 | 5408 days | 15% |
| Andreas Fritesche | 8/10 | 5409 days | 15% |
| Matthys Kikke | 9/10 | 5410 days | 15% |
| Bucher Weruer | 10/10 | 5410 days | 15% |
| Camilla Andersson | 7/10 | 5411 days | 14% |
| Bob Adams | 10/10 | 5418 days | 15% |
| John | 8/10 | 5418 days | 15% |
| Katie Nicol | 10/10 | 5419 days | 15% |
| Martin Current | 9/10 | 5421 days | 15% |
| Teum and Orselien | 8/10 | 5422 days | 15% |
| Vanderhorst | 8/10 | 5422 days | 15% |
| John Price | 9/10 | 5424 days | 15% |
| Doris Schollenberger | 10/10 | 5424 days | 15% |
| Phil Hunter | 9/10 | 5425 days | 15% |
| Chris | 8/10 | 5426 days | 15% |
| Gordon Daniels | 8/10 | 5429 days | 15% |
| Hull | 9/10 | 5429 days | 15% |
| Lizzie | 10/10 | 5496 days | 15% |
| allesca | 10/10 | 5526 days | 15% |
| M Schram | 8/10 | 5688 days | 15% |
| Versteeg | 9/10 | 5691 days | 15% |
| Lomas | 10/10 | 5700 days | 15% |
| Maureen | 10/10 | 5704 days | 15% |
| Amy | 9/10 | 5709 days | 15% |
| Don & Geraldine | 10/10 | 5746 days | 15% |
| Hans and Astrid | 10/10 | 5748 days | 15% |
| Agnes | 10/10 | 5750 days | 15% |
| maggie Webster | 10/10 | 5757 days | 15% |
| Keita-Karen Buchanan | 10/10 | 5757 days | 15% |
| Lars Taarnhoej | 7/10 | 5757 days | 14% |
| markus Brandenberger | 10/10 | 5758 days | 15% |
| Jvjm Family | 9/10 | 5759 days | 15% |
| David B | 7/10 | 5766 days | 14% |
| Margaret O'Sullivan | 8/10 | 5766 days | 15% |
| Chris el capitan | 9/10 | 5776 days | 15% |
| John Cox | 9/10 | 5777 days | 15% |
| Muller Weissert | 8/10 | 5778 days | 15% |
| Brian Morris | 9/10 | 5780 days | 15% |
| Jobbs | 10/10 | 5780 days | 15% |
| Maria Newton | 9/10 | 5781 days | 15% |
| Dieter Groscurth | 8/10 | 5781 days | 15% |
| Gordon and Joyce | 9/10 | 5781 days | 15% |
| Remko Ebbens | 9/10 | 5784 days | 15% |
| Thijs Schoemaker | 8/10 | 5785 days | 15% |
| Armand | 5/10 | 5785 days | 12% |
| Ferth | 10/10 | 5785 days | 15% |
| J Kempeneers | 10/10 | 5785 days | 15% |
| Thea X | 5/10 | 5794 days | 12% |
| Keith Wilde | 10/10 | 5794 days | 15% |
| Dick Rosman | 9/10 | 5795 days | 15% |
| Terry Phillips | 5/10 | 5796 days | 12% |
| Jules | 8/10 | 5796 days | 15% |
| Carl Diehl | 9/10 | 5797 days | 15% |
| Paul Schoepfer | 9/10 | 5797 days | 15% |
| Uwe Rieper | 10/10 | 5798 days | 15% |
| Yvonne Ing | 10/10 | 5798 days | 15% |
| Diane Chapple | 9/10 | 5798 days | 15% |
| wannab | 9/10 | 5799 days | 15% |
| Kevin and Teresa | 9/10 | 5799 days | 15% |
| Christiane Lindenberg | 9/10 | 5808 days | 15% |
| Nigel Armstrong | 9/10 | 5810 days | 15% |
| Buss | 10/10 | 5812 days | 15% |
| John J | 9/10 | 5813 days | 15% |
| Heinrich Hax | 10/10 | 5819 days | 15% |
| marcusba | 8/10 | 5842 days | 15% |
| tanh | 9/10 | 5846 days | 15% |
| mariak | 7/10 | 5847 days | 14% |
| Silvana Thom | 10/10 | 5871 days | 15% |
| Wolfgang Dittrich | 10/10 | 5871 days | 15% |
| Chris Bulman | 10/10 | 5872 days | 15% |
| andyge | 8/10 | 5891 days | 15% |
| Ritag | 9/10 | 5976 days | 15% |
| regw | 10/10 | 5980 days | 15% |
| Cate | 9/10 | 6104 days | 15% |
| ginekek | 9/10 | 6105 days | 15% |
| geoffelizabeth | 9/10 | 6105 days | 15% |
| mikestep | 9/10 | 6105 days | 15% |
| EllenorO | 10/10 | 6105 days | 15% |
| Van Lent | 9/10 | 6106 days | 15% |
| Anna | 10/10 | 6106 days | 15% |
| Mike | 9/10 | 6109 days | 15% |
| Richard | 10/10 | 6114 days | 15% |
| Michael Walsall | 10/10 | 6114 days | 15% |
| AstridVG | 8/10 | 6121 days | 15% |
| Christine | 9/10 | 6121 days | 15% |
| Peter | 9/10 | 6121 days | 15% |
| DimitriD | 5/10 | 6122 days | 12% |
| Kitty | 9/10 | 6122 days | 15% |
| Max | 10/10 | 6124 days | 15% |
| Andy Baker | 9/10 | 6125 days | 15% |
| Francesca Sabat | 8/10 | 6127 days | 15% |
| Robert | 10/10 | 6135 days | 15% |
| Melissa Gillespie | 10/10 | 6136 days | 15% |
| Hetty | 9/10 | 6136 days | 15% |
| Charles | 7/10 | 6137 days | 14% |
| Byleveld | 8/10 | 6138 days | 15% |
| JoseB | 8/10 | 6139 days | 15% |
| MrHebbard | 10/10 | 6139 days | 15% |
| ChristineM | 10/10 | 6139 days | 15% |
| Elrik frau | 10/10 | 6139 days | 15% |
| Louise | 9/10 | 6145 days | 15% |
| Douglas | 9/10 | 6146 days | 15% |
| CSander | 9/10 | 6163 days | 15% |
| Patricia | 8/10 | 6173 days | 15% |
| Dijk | 8/10 | 6177 days | 15% |
| Josefine | 10/10 | 6177 days | 15% |
| Ducolq | 5/10 | 6177 days | 12% |
| Jacques | 8/10 | 6178 days | 15% |
| Carina | 8/10 | 6183 days | 15% |
| Michael | 9/10 | 6215 days | 15% |
| silvia | 8/10 | 6217 days | 15% |
| Anouk | 8/10 | 6217 days | 15% |
| Mat | 9/10 | 6222 days | 15% |
| Paul | 8/10 | 6268 days | 15% |
| Helga | 9/10 | 6279 days | 15% |
| Mikel | 9/10 | 6344 days | 15% |
| Christine | 6/10 | 6353 days | 13% |
| Jim Summers | 9/10 | 6353 days | 15% |
| Franz | 7/10 | 6476 days | 14% |
| Linda and Peter | 10/10 | 6484 days | 15% |
| Mike and Judy | 8/10 | 6485 days | 15% |
| Methers | 9/10 | 6485 days | 15% |
| Denise | 10/10 | 6488 days | 15% |
| Kavanagh | 8/10 | 6488 days | 15% |
| De Wijn | 8/10 | 6491 days | 15% |
| Lisa Jones | 9/10 | 6492 days | 15% |
| Christian | 9/10 | 6492 days | 15% |
| Soren Danning | 8/10 | 6492 days | 15% |
| Jones | 10/10 | 6496 days | 15% |
| Orla Hansen | 10/10 | 6497 days | 15% |
| Bauer | 10/10 | 6503 days | 15% |
| Aharon | 10/10 | 6503 days | 15% |
| D.A. Mulder | 9/10 | 6504 days | 15% |
| Jurg Meister | 8/10 | 6505 days | 15% |
| Sally and David Wallis | 10/10 | 6505 days | 15% |
| Knol | 9/10 | 6506 days | 15% |
| Sue Randall | 8/10 | 6509 days | 15% |
| Cole Penelope | 10/10 | 6509 days | 15% |
| Blenkoe | 6/10 | 6510 days | 13% |
| Erwin de Kleijn | 8/10 | 6510 days | 15% |
| Thomas | 9/10 | 6519 days | 15% |
| Bex | 10/10 | 6532 days | 15% |
| Van Hoof | 9/10 | 6545 days | 15% |
| Tim | 10/10 | 6545 days | 15% |
| Gabriel Faber | 9/10 | 6580 days | 15% |
| Jonkers | 9/10 | 6582 days | 15% |
| Edwin | 10/10 | 6586 days | 15% |
| Lyn Saxon | 10/10 | 6590 days | 15% |
| Wendy Williams | 10/10 | 6597 days | 15% |
| Hans Knappmann | 10/10 | 6706 days | 15% |
| Phillipa | 10/10 | 6814 days | 15% |
| Stefan&Gerte | 9/10 | 6828 days | 15% |
| Cat | 9/10 | 6834 days | 15% |
| TeamFlorida | 10/10 | 6841 days | 15% |
| Jo | 9/10 | 6841 days | 15% |
| Fenke | 9/10 | 6846 days | 15% |
| Bas | 9/10 | 6846 days | 15% |
| Martin Smith | 9/10 | 6852 days | 15% |
| John Beirne | 9/10 | 6859 days | 15% |
| Palle | 9/10 | 6864 days | 15% |
| Anna | 9/10 | 6864 days | 15% |
| Svenja | 10/10 | 6870 days | 15% |
| Shirely | 10/10 | 6870 days | 15% |
| Rogier | 8/10 | 6871 days | 15% |
| Wendy | 8/10 | 6875 days | 15% |
| Kerry | 10/10 | 6880 days | 15% |
| Henrich | 10/10 | 6880 days | 15% |
| Messing | 10/10 | 6883 days | 15% |
| Rolf Kruger | 10/10 | 6883 days | 15% |
| Ian | 8/10 | 6887 days | 15% |
| Peter | 9/10 | 6887 days | 15% |
| Brian | 10/10 | 6887 days | 15% |
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
1.69% 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.