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
89.92%
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 | 1449 days | 100% |
| Joanne&Ian | 10/10 | 1541 days | 73% |
| Geoff Steele | 8/10 | 2817 days | 23% |
| Axel and Patricia G | 6/10 | 3006 days | 18% |
| Leonie Westerhot | 8/10 | 3078 days | 19% |
| Ivanova R | 9/10 | 3335 days | 15% |
| Lorenz Pfisterer | 10/10 | 3347 days | 15% |
| Heidi et Mat | 8/10 | 3356 days | 15% |
| Anke Vater | 10/10 | 3357 days | 15% |
| Anouk Jongsma | 9/10 | 3365 days | 15% |
| Robin WUERFEL | 9/10 | 3437 days | 14% |
| Helen Parsons | 10/10 | 3757 days | 9% |
| Peter Beeloo | 9/10 | 3760 days | 9% |
| Laurent Arditi | 9/10 | 3945 days | 6% |
| Sheila Galpin | 9/10 | 4096 days | 4% |
| Simon Galpin | 9/10 | 4096 days | 4% |
| Douglas Dean | 10/10 | 4098 days | 4% |
| Stina Hultberg | 4/10 | 4102 days | 3% |
| Alexander Zimmer | 7/10 | 4103 days | 4% |
| Linus Larsson | 3/10 | 4104 days | 2% |
| Leon Courtney | 10/10 | 4105 days | 4% |
| Libby | 10/10 | 4119 days | 4% |
| Colin Billington | 7/10 | 4120 days | 4% |
| Don Wallis | 10/10 | 4123 days | 4% |
| Bill | 7/10 | 4124 days | 3% |
| Saskia | 5/10 | 4124 days | 3% |
| Terry Seaman | 8/10 | 4126 days | 4% |
| S B | 10/10 | 4139 days | 3% |
| M K | 10/10 | 4139 days | 3% |
| Alacchi Moustier | 10/10 | 4139 days | 3% |
| Maya Bakker-deDreu | 8/10 | 4147 days | 3% |
| Stuart Wilson | 8/10 | 4153 days | 3% |
| Fabian Lee | 5/10 | 4156 days | 2% |
| paul beacock | 10/10 | 4157 days | 3% |
| Gal Bero | 10/10 | 4160 days | 3% |
| Elly Zimmer | 6/10 | 4164 days | 3% |
| Bjorn Van Mulders | 10/10 | 4167 days | 3% |
| Kim Maertens | 9/10 | 4167 days | 3% |
| Steve Warren | 10/10 | 4279 days | 1% |
| hendrik king | 7/10 | 4371 days | 0% |
| Peter Jolliffe | 10/10 | 4463 days | 8% |
| Helen Dean | 10/10 | 4463 days | 8% |
| Dave Mertzig | 10/10 | 4463 days | 8% |
| Kathryn Pisco | 9/10 | 4469 days | 7% |
| Mike Pisco | 9/10 | 4469 days | 7% |
| Sebastian and Peter Beate | 10/10 | 4486 days | 8% |
| Fraser Goldsmith | 8/10 | 4487 days | 7% |
| Bucher | 9/10 | 4538 days | 7% |
| Marieke | 8/10 | 4539 days | 7% |
| Chew (Peter) | 7/10 | 4544 days | 7% |
| Natalie Nubler | 6/10 | 4545 days | 6% |
| Frans Derks | 9/10 | 4546 days | 7% |
| Meryem Buchwitz | 9/10 | 4566 days | 7% |
| roos wubben | 9/10 | 4569 days | 7% |
| Dagette | 9/10 | 4614 days | 7% |
| Teri C | 10/10 | 4644 days | 8% |
| Rob Klauer | 5/10 | 4816 days | 6% |
| Oliver Hardt | 9/10 | 4817 days | 7% |
| Val Phillips | 8/10 | 4821 days | 7% |
| Peter Adams | 9/10 | 4822 days | 7% |
| Harry Ruys | 8/10 | 4824 days | 7% |
| John McAllister | 9/10 | 4825 days | 7% |
| Keith Helen | 10/10 | 4828 days | 8% |
| Daniel Patricia | 9/10 | 4831 days | 7% |
| Laura Diepeveen | 8/10 | 4833 days | 7% |
| Fries | 10/10 | 4837 days | 8% |
| Karin Laurev | 10/10 | 4837 days | 8% |
| Gillian Rowe | 9/10 | 4838 days | 7% |
| Nigel Horrocks | 7/10 | 4838 days | 7% |
| Dieter Mangold | 10/10 | 4840 days | 8% |
| Lyn Deavin | 8/10 | 4840 days | 7% |
| Sabine & Stefan | 10/10 | 4841 days | 8% |
| Randewyk | 8/10 | 4841 days | 7% |
| Koster | 6/10 | 4843 days | 6% |
| Peter Aertssen | 7/10 | 4843 days | 7% |
| John A Jerome | 8/10 | 4843 days | 7% |
| Lynn Robinson | 10/10 | 4849 days | 8% |
| Heike | 9/10 | 4852 days | 7% |
| Robert MacLeod-Smith | 8/10 | 4853 days | 7% |
| Carel | 8/10 | 4854 days | 7% |
| Anna | 9/10 | 4855 days | 7% |
| Barrie Corless | 9/10 | 4856 days | 7% |
| Urban Reifler | 10/10 | 4868 days | 8% |
| Lyn Stainton | 10/10 | 4931 days | 8% |
| John & Vicki | 8/10 | 4935 days | 7% |
| jenckes | 9/10 | 5010 days | 7% |
| Debbie Smithers | 10/10 | 5152 days | 8% |
| Julie and Russ Charles | 10/10 | 5176 days | 8% |
| Kevin Wong | 10/10 | 5176 days | 8% |
| Rocipon | 8/10 | 5177 days | 7% |
| Margit and Corein Groenevelt | 7/10 | 5180 days | 7% |
| Richard Dudfield | 10/10 | 5180 days | 8% |
| John Duffy | 10/10 | 5180 days | 8% |
| Richard Gallichan | 9/10 | 5181 days | 7% |
| Jean Barker | 8/10 | 5181 days | 7% |
| Bette Eh | 10/10 | 5183 days | 8% |
| bryfrance | 10/10 | 5184 days | 8% |
| Juliane Kleiu | 10/10 | 5184 days | 8% |
| Claudia | 8/10 | 5184 days | 7% |
| E Brockbank | 9/10 | 5185 days | 7% |
| David Mellard | 10/10 | 5186 days | 8% |
| Bruce & Elaine Chote | 10/10 | 5186 days | 8% |
| Roland Berger | 7/10 | 5187 days | 7% |
| Ross | 9/10 | 5187 days | 7% |
| Gerstmann | 9/10 | 5188 days | 7% |
| Ekhard Wittkugel | 10/10 | 5190 days | 8% |
| Stephen Shearer | 10/10 | 5191 days | 8% |
| Monika | 10/10 | 5192 days | 8% |
| Betten | 9/10 | 5193 days | 7% |
| Stephen Jones | 9/10 | 5194 days | 7% |
| Mike and Diane Baker | 10/10 | 5195 days | 8% |
| Lenore Dejong | 10/10 | 5196 days | 8% |
| Andreas Fritesche | 8/10 | 5197 days | 7% |
| Matthys Kikke | 9/10 | 5198 days | 7% |
| Bucher Weruer | 10/10 | 5198 days | 8% |
| Camilla Andersson | 7/10 | 5199 days | 7% |
| Bob Adams | 10/10 | 5206 days | 8% |
| John | 8/10 | 5206 days | 7% |
| Katie Nicol | 10/10 | 5207 days | 8% |
| Martin Current | 9/10 | 5209 days | 7% |
| Teum and Orselien | 8/10 | 5210 days | 7% |
| Vanderhorst | 8/10 | 5210 days | 7% |
| John Price | 9/10 | 5212 days | 7% |
| Doris Schollenberger | 10/10 | 5212 days | 8% |
| Phil Hunter | 9/10 | 5213 days | 7% |
| Chris | 8/10 | 5214 days | 7% |
| Gordon Daniels | 8/10 | 5217 days | 7% |
| Hull | 9/10 | 5217 days | 7% |
| Lizzie | 10/10 | 5284 days | 8% |
| allesca | 10/10 | 5314 days | 8% |
| M Schram | 8/10 | 5477 days | 7% |
| Versteeg | 9/10 | 5480 days | 7% |
| Lomas | 10/10 | 5489 days | 8% |
| Maureen | 10/10 | 5493 days | 8% |
| Amy | 9/10 | 5498 days | 7% |
| Don & Geraldine | 10/10 | 5534 days | 8% |
| Hans and Astrid | 10/10 | 5536 days | 8% |
| Agnes | 10/10 | 5538 days | 8% |
| maggie Webster | 10/10 | 5545 days | 8% |
| Keita-Karen Buchanan | 10/10 | 5545 days | 8% |
| Lars Taarnhoej | 7/10 | 5545 days | 7% |
| markus Brandenberger | 10/10 | 5546 days | 8% |
| Jvjm Family | 9/10 | 5547 days | 7% |
| David B | 7/10 | 5554 days | 7% |
| Margaret O'Sullivan | 8/10 | 5554 days | 7% |
| Chris el capitan | 9/10 | 5564 days | 7% |
| John Cox | 9/10 | 5565 days | 7% |
| Muller Weissert | 8/10 | 5566 days | 7% |
| Brian Morris | 9/10 | 5568 days | 7% |
| Jobbs | 10/10 | 5568 days | 8% |
| Maria Newton | 9/10 | 5569 days | 7% |
| Dieter Groscurth | 8/10 | 5569 days | 7% |
| Gordon and Joyce | 9/10 | 5569 days | 7% |
| Remko Ebbens | 9/10 | 5572 days | 7% |
| Thijs Schoemaker | 8/10 | 5573 days | 7% |
| Armand | 5/10 | 5573 days | 6% |
| Ferth | 10/10 | 5573 days | 8% |
| J Kempeneers | 10/10 | 5573 days | 8% |
| Thea X | 5/10 | 5582 days | 6% |
| Keith Wilde | 10/10 | 5582 days | 8% |
| Dick Rosman | 9/10 | 5583 days | 7% |
| Terry Phillips | 5/10 | 5584 days | 6% |
| Jules | 8/10 | 5584 days | 7% |
| Carl Diehl | 9/10 | 5585 days | 7% |
| Paul Schoepfer | 9/10 | 5585 days | 7% |
| Uwe Rieper | 10/10 | 5586 days | 8% |
| Yvonne Ing | 10/10 | 5586 days | 8% |
| Diane Chapple | 9/10 | 5586 days | 7% |
| wannab | 9/10 | 5587 days | 7% |
| Kevin and Teresa | 9/10 | 5587 days | 7% |
| Christiane Lindenberg | 9/10 | 5596 days | 7% |
| Nigel Armstrong | 9/10 | 5598 days | 7% |
| Buss | 10/10 | 5600 days | 8% |
| John J | 9/10 | 5601 days | 7% |
| Heinrich Hax | 10/10 | 5607 days | 8% |
| marcusba | 8/10 | 5630 days | 7% |
| tanh | 9/10 | 5634 days | 7% |
| mariak | 7/10 | 5635 days | 7% |
| Silvana Thom | 10/10 | 5659 days | 8% |
| Wolfgang Dittrich | 10/10 | 5659 days | 8% |
| Chris Bulman | 10/10 | 5660 days | 8% |
| andyge | 8/10 | 5679 days | 7% |
| Ritag | 9/10 | 5765 days | 7% |
| regw | 10/10 | 5769 days | 8% |
| Cate | 9/10 | 5892 days | 7% |
| ginekek | 9/10 | 5893 days | 7% |
| geoffelizabeth | 9/10 | 5893 days | 7% |
| mikestep | 9/10 | 5893 days | 7% |
| EllenorO | 10/10 | 5893 days | 8% |
| Van Lent | 9/10 | 5894 days | 7% |
| Anna | 10/10 | 5894 days | 8% |
| Mike | 9/10 | 5897 days | 7% |
| Richard | 10/10 | 5902 days | 8% |
| Michael Walsall | 10/10 | 5902 days | 8% |
| AstridVG | 8/10 | 5909 days | 7% |
| Christine | 9/10 | 5909 days | 7% |
| Peter | 9/10 | 5909 days | 7% |
| DimitriD | 5/10 | 5910 days | 6% |
| Kitty | 9/10 | 5910 days | 7% |
| Max | 10/10 | 5912 days | 8% |
| Andy Baker | 9/10 | 5913 days | 7% |
| Francesca Sabat | 8/10 | 5915 days | 7% |
| Robert | 10/10 | 5923 days | 8% |
| Melissa Gillespie | 10/10 | 5924 days | 8% |
| Hetty | 9/10 | 5924 days | 7% |
| Charles | 7/10 | 5925 days | 7% |
| Byleveld | 8/10 | 5926 days | 7% |
| JoseB | 8/10 | 5927 days | 7% |
| MrHebbard | 10/10 | 5927 days | 8% |
| ChristineM | 10/10 | 5927 days | 8% |
| Elrik frau | 10/10 | 5927 days | 8% |
| Louise | 9/10 | 5933 days | 7% |
| Douglas | 9/10 | 5934 days | 7% |
| CSander | 9/10 | 5951 days | 7% |
| Patricia | 8/10 | 5961 days | 7% |
| Dijk | 8/10 | 5965 days | 7% |
| Josefine | 10/10 | 5965 days | 8% |
| Ducolq | 5/10 | 5965 days | 6% |
| Jacques | 8/10 | 5966 days | 7% |
| Carina | 8/10 | 5971 days | 7% |
| Michael | 9/10 | 6003 days | 7% |
| silvia | 8/10 | 6005 days | 7% |
| Anouk | 8/10 | 6005 days | 7% |
| Mat | 9/10 | 6010 days | 7% |
| Paul | 8/10 | 6056 days | 7% |
| Helga | 9/10 | 6067 days | 7% |
| Mikel | 9/10 | 6132 days | 7% |
| Christine | 6/10 | 6141 days | 6% |
| Jim Summers | 9/10 | 6141 days | 7% |
| Franz | 7/10 | 6264 days | 7% |
| Linda and Peter | 10/10 | 6272 days | 8% |
| Mike and Judy | 8/10 | 6273 days | 7% |
| Methers | 9/10 | 6273 days | 7% |
| Denise | 10/10 | 6276 days | 8% |
| Kavanagh | 8/10 | 6276 days | 7% |
| De Wijn | 8/10 | 6279 days | 7% |
| Lisa Jones | 9/10 | 6280 days | 7% |
| Christian | 9/10 | 6280 days | 7% |
| Soren Danning | 8/10 | 6280 days | 7% |
| Jones | 10/10 | 6284 days | 8% |
| Orla Hansen | 10/10 | 6285 days | 8% |
| Bauer | 10/10 | 6291 days | 8% |
| Aharon | 10/10 | 6291 days | 8% |
| D.A. Mulder | 9/10 | 6292 days | 7% |
| Jurg Meister | 8/10 | 6293 days | 7% |
| Sally and David Wallis | 10/10 | 6293 days | 8% |
| Knol | 9/10 | 6294 days | 7% |
| Sue Randall | 8/10 | 6297 days | 7% |
| Cole Penelope | 10/10 | 6297 days | 8% |
| Blenkoe | 6/10 | 6298 days | 6% |
| Erwin de Kleijn | 8/10 | 6298 days | 7% |
| Thomas | 9/10 | 6307 days | 7% |
| Bex | 10/10 | 6320 days | 8% |
| Van Hoof | 9/10 | 6333 days | 7% |
| Tim | 10/10 | 6333 days | 8% |
| Gabriel Faber | 9/10 | 6368 days | 7% |
| Jonkers | 9/10 | 6370 days | 7% |
| Edwin | 10/10 | 6374 days | 8% |
| Lyn Saxon | 10/10 | 6378 days | 8% |
| Wendy Williams | 10/10 | 6385 days | 8% |
| Hans Knappmann | 10/10 | 6495 days | 8% |
| Phillipa | 10/10 | 6603 days | 8% |
| Stefan&Gerte | 9/10 | 6617 days | 7% |
| Cat | 9/10 | 6623 days | 7% |
| TeamFlorida | 10/10 | 6630 days | 8% |
| Jo | 9/10 | 6630 days | 7% |
| Fenke | 9/10 | 6635 days | 7% |
| Bas | 9/10 | 6635 days | 7% |
| Martin Smith | 9/10 | 6640 days | 7% |
| John Beirne | 9/10 | 6647 days | 7% |
| Palle | 9/10 | 6652 days | 7% |
| Anna | 9/10 | 6652 days | 7% |
| Svenja | 10/10 | 6658 days | 8% |
| Shirely | 10/10 | 6658 days | 8% |
| Rogier | 8/10 | 6659 days | 7% |
| Wendy | 8/10 | 6663 days | 7% |
| Kerry | 10/10 | 6668 days | 8% |
| Henrich | 10/10 | 6668 days | 8% |
| Messing | 10/10 | 6671 days | 8% |
| Rolf Kruger | 10/10 | 6671 days | 8% |
| Ian | 8/10 | 6675 days | 7% |
| Peter | 9/10 | 6675 days | 7% |
| Brian | 10/10 | 6675 days | 8% |
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
-2.69% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 96 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 | -2.65% |
| 198 | -2.67% |
| 199 | -2.68% |
| 200 | -2.69% |
| 201 | -2.71% |
| 202 | -2.72% |
| 203 | -2.73% |
| … | … |
Balancing Adjustment
1.42% 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
89%
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.