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 286 reviews. There are 283 valid reviews that are included when calculating the ranking score and 3 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
89.52%
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 | 1724 days | 100% |
| Joanne&Ian | 10/10 | 1816 days | 90% |
| Geoff Steele | 8/10 | 3093 days | 44% |
| Axel and Patricia G | 6/10 | 3281 days | 33% |
| Leonie Westerhot | 8/10 | 3353 days | 35% |
| Ivanova R | 9/10 | 3610 days | 27% |
| Lorenz Pfisterer | 10/10 | 3622 days | 27% |
| Heidi et Mat | 8/10 | 3631 days | 26% |
| Anke Vater | 10/10 | 3632 days | 26% |
| Anouk Jongsma | 9/10 | 3640 days | 26% |
| Robin WUERFEL | 9/10 | 3712 days | 23% |
| Helen Parsons | 10/10 | 4032 days | 12% |
| Peter Beeloo | 9/10 | 4036 days | 12% |
| Laurent Arditi | 9/10 | 4220 days | 6% |
| Sheila Galpin | 9/10 | 4371 days | 0% |
| Simon Galpin | 9/10 | 4371 days | 0% |
| Douglas Dean | 10/10 | 4373 days | 0% |
| Stina Hultberg | 4/10 | 4377 days | 0% |
| Alexander Zimmer | 7/10 | 4378 days | 0% |
| Linus Larsson | 3/10 | 4379 days | 0% |
| Leon Courtney | 10/10 | 4380 days | 18% |
| Libby | 10/10 | 4394 days | 18% |
| Colin Billington | 7/10 | 4395 days | 17% |
| Don Wallis | 10/10 | 4398 days | 18% |
| Bill | 7/10 | 4399 days | 17% |
| Saskia | 5/10 | 4399 days | 14% |
| Terry Seaman | 8/10 | 4401 days | 18% |
| S B | 10/10 | 4414 days | 18% |
| M K | 10/10 | 4414 days | 18% |
| Alacchi Moustier | 10/10 | 4414 days | 18% |
| Maya Bakker-deDreu | 8/10 | 4422 days | 18% |
| Stuart Wilson | 8/10 | 4428 days | 18% |
| Fabian Lee | 5/10 | 4431 days | 14% |
| paul beacock | 10/10 | 4432 days | 18% |
| Gal Bero | 10/10 | 4435 days | 18% |
| Elly Zimmer | 6/10 | 4439 days | 15% |
| Bjorn Van Mulders | 10/10 | 4442 days | 18% |
| Kim Maertens | 9/10 | 4442 days | 18% |
| Steve Warren | 10/10 | 4554 days | 18% |
| hendrik king | 7/10 | 4646 days | 17% |
| Peter Jolliffe | 10/10 | 4738 days | 18% |
| Helen Dean | 10/10 | 4738 days | 18% |
| Dave Mertzig | 10/10 | 4738 days | 18% |
| Kathryn Pisco | 9/10 | 4744 days | 18% |
| Mike Pisco | 9/10 | 4744 days | 18% |
| Sebastian and Peter Beate | 10/10 | 4761 days | 18% |
| Fraser Goldsmith | 8/10 | 4762 days | 18% |
| Bucher | 9/10 | 4813 days | 18% |
| Marieke | 8/10 | 4814 days | 18% |
| Chew (Peter) | 7/10 | 4819 days | 17% |
| Natalie Nubler | 6/10 | 4820 days | 15% |
| Frans Derks | 9/10 | 4821 days | 18% |
| Meryem Buchwitz | 9/10 | 4841 days | 18% |
| roos wubben | 9/10 | 4844 days | 18% |
| Dagette | 9/10 | 4889 days | 18% |
| Teri C | 10/10 | 4919 days | 18% |
| Rob Klauer | 5/10 | 5091 days | 14% |
| Oliver Hardt | 9/10 | 5092 days | 18% |
| Val Phillips | 8/10 | 5096 days | 18% |
| Peter Adams | 9/10 | 5097 days | 18% |
| Harry Ruys | 8/10 | 5099 days | 18% |
| John McAllister | 9/10 | 5100 days | 18% |
| Keith Helen | 10/10 | 5103 days | 18% |
| Daniel Patricia | 9/10 | 5106 days | 18% |
| Laura Diepeveen | 8/10 | 5108 days | 18% |
| Fries | 10/10 | 5112 days | 18% |
| Karin Laurev | 10/10 | 5112 days | 18% |
| Gillian Rowe | 9/10 | 5113 days | 18% |
| Nigel Horrocks | 7/10 | 5113 days | 17% |
| Dieter Mangold | 10/10 | 5115 days | 18% |
| Lyn Deavin | 8/10 | 5115 days | 18% |
| Sabine & Stefan | 10/10 | 5116 days | 18% |
| Randewyk | 8/10 | 5116 days | 18% |
| Koster | 6/10 | 5118 days | 15% |
| Peter Aertssen | 7/10 | 5118 days | 17% |
| John A Jerome | 8/10 | 5118 days | 18% |
| Lynn Robinson | 10/10 | 5124 days | 18% |
| Heike | 9/10 | 5127 days | 18% |
| Robert MacLeod-Smith | 8/10 | 5128 days | 18% |
| Carel | 8/10 | 5129 days | 18% |
| Anna | 9/10 | 5130 days | 18% |
| Barrie Corless | 9/10 | 5131 days | 18% |
| Urban Reifler | 10/10 | 5143 days | 18% |
| Lyn Stainton | 10/10 | 5206 days | 18% |
| John & Vicki | 8/10 | 5210 days | 18% |
| jenckes | 9/10 | 5285 days | 18% |
| Debbie Smithers | 10/10 | 5427 days | 18% |
| Julie and Russ Charles | 10/10 | 5451 days | 18% |
| Kevin Wong | 10/10 | 5451 days | 18% |
| Rocipon | 8/10 | 5452 days | 18% |
| Margit and Corein Groenevelt | 7/10 | 5455 days | 17% |
| Richard Dudfield | 10/10 | 5455 days | 18% |
| John Duffy | 10/10 | 5455 days | 18% |
| Richard Gallichan | 9/10 | 5456 days | 18% |
| Jean Barker | 8/10 | 5456 days | 18% |
| Bette Eh | 10/10 | 5458 days | 18% |
| bryfrance | 10/10 | 5459 days | 18% |
| Juliane Kleiu | 10/10 | 5459 days | 18% |
| Claudia | 8/10 | 5459 days | 18% |
| E Brockbank | 9/10 | 5460 days | 18% |
| David Mellard | 10/10 | 5461 days | 18% |
| Bruce & Elaine Chote | 10/10 | 5461 days | 18% |
| Roland Berger | 7/10 | 5462 days | 17% |
| Ross | 9/10 | 5462 days | 18% |
| Gerstmann | 9/10 | 5463 days | 18% |
| Ekhard Wittkugel | 10/10 | 5465 days | 18% |
| Stephen Shearer | 10/10 | 5466 days | 18% |
| Monika | 10/10 | 5467 days | 18% |
| Betten | 9/10 | 5468 days | 18% |
| Stephen Jones | 9/10 | 5469 days | 18% |
| Mike and Diane Baker | 10/10 | 5470 days | 18% |
| Lenore Dejong | 10/10 | 5471 days | 18% |
| Andreas Fritesche | 8/10 | 5472 days | 18% |
| Matthys Kikke | 9/10 | 5473 days | 18% |
| Bucher Weruer | 10/10 | 5473 days | 18% |
| Camilla Andersson | 7/10 | 5474 days | 17% |
| Bob Adams | 10/10 | 5481 days | 18% |
| John | 8/10 | 5481 days | 18% |
| Katie Nicol | 10/10 | 5482 days | 18% |
| Martin Current | 9/10 | 5484 days | 18% |
| Teum and Orselien | 8/10 | 5485 days | 18% |
| Vanderhorst | 8/10 | 5485 days | 18% |
| John Price | 9/10 | 5487 days | 18% |
| Doris Schollenberger | 10/10 | 5487 days | 18% |
| Phil Hunter | 9/10 | 5488 days | 18% |
| Chris | 8/10 | 5489 days | 18% |
| Gordon Daniels | 8/10 | 5492 days | 18% |
| Hull | 9/10 | 5492 days | 18% |
| Lizzie | 10/10 | 5559 days | 18% |
| allesca | 10/10 | 5589 days | 18% |
| M Schram | 8/10 | 5752 days | 18% |
| Versteeg | 9/10 | 5755 days | 18% |
| Lomas | 10/10 | 5764 days | 18% |
| Maureen | 10/10 | 5768 days | 18% |
| Amy | 9/10 | 5773 days | 18% |
| Don & Geraldine | 10/10 | 5809 days | 18% |
| Hans and Astrid | 10/10 | 5811 days | 18% |
| Agnes | 10/10 | 5813 days | 18% |
| maggie Webster | 10/10 | 5820 days | 18% |
| Keita-Karen Buchanan | 10/10 | 5820 days | 18% |
| Lars Taarnhoej | 7/10 | 5820 days | 17% |
| markus Brandenberger | 10/10 | 5821 days | 18% |
| Jvjm Family | 9/10 | 5822 days | 18% |
| David B | 7/10 | 5829 days | 17% |
| Margaret O'Sullivan | 8/10 | 5829 days | 18% |
| Chris el capitan | 9/10 | 5839 days | 18% |
| John Cox | 9/10 | 5840 days | 18% |
| Muller Weissert | 8/10 | 5841 days | 18% |
| Brian Morris | 9/10 | 5843 days | 18% |
| Jobbs | 10/10 | 5843 days | 18% |
| Maria Newton | 9/10 | 5844 days | 18% |
| Dieter Groscurth | 8/10 | 5844 days | 18% |
| Gordon and Joyce | 9/10 | 5844 days | 18% |
| Remko Ebbens | 9/10 | 5847 days | 18% |
| Thijs Schoemaker | 8/10 | 5848 days | 18% |
| Armand | 5/10 | 5848 days | 14% |
| Ferth | 10/10 | 5848 days | 18% |
| J Kempeneers | 10/10 | 5848 days | 18% |
| Thea X | 5/10 | 5857 days | 14% |
| Keith Wilde | 10/10 | 5857 days | 18% |
| Dick Rosman | 9/10 | 5858 days | 18% |
| Terry Phillips | 5/10 | 5859 days | 14% |
| Jules | 8/10 | 5859 days | 18% |
| Carl Diehl | 9/10 | 5860 days | 18% |
| Paul Schoepfer | 9/10 | 5860 days | 18% |
| Uwe Rieper | 10/10 | 5861 days | 18% |
| Yvonne Ing | 10/10 | 5861 days | 18% |
| Diane Chapple | 9/10 | 5861 days | 18% |
| wannab | 9/10 | 5862 days | 18% |
| Kevin and Teresa | 9/10 | 5862 days | 18% |
| Christiane Lindenberg | 9/10 | 5871 days | 18% |
| Nigel Armstrong | 9/10 | 5873 days | 18% |
| Buss | 10/10 | 5875 days | 18% |
| John J | 9/10 | 5876 days | 18% |
| Heinrich Hax | 10/10 | 5882 days | 18% |
| marcusba | 8/10 | 5905 days | 18% |
| tanh | 9/10 | 5909 days | 18% |
| mariak | 7/10 | 5910 days | 17% |
| Silvana Thom | 10/10 | 5934 days | 18% |
| Wolfgang Dittrich | 10/10 | 5934 days | 18% |
| Chris Bulman | 10/10 | 5935 days | 18% |
| andyge | 8/10 | 5954 days | 18% |
| Ritag | 9/10 | 6040 days | 18% |
| regw | 10/10 | 6044 days | 18% |
| Cate | 9/10 | 6168 days | 18% |
| ginekek | 9/10 | 6168 days | 18% |
| geoffelizabeth | 9/10 | 6168 days | 18% |
| mikestep | 9/10 | 6168 days | 18% |
| EllenorO | 10/10 | 6168 days | 18% |
| Van Lent | 9/10 | 6170 days | 18% |
| Anna | 10/10 | 6170 days | 18% |
| Mike | 9/10 | 6172 days | 18% |
| Richard | 10/10 | 6178 days | 18% |
| Michael Walsall | 10/10 | 6178 days | 18% |
| AstridVG | 8/10 | 6184 days | 18% |
| Christine | 9/10 | 6184 days | 18% |
| Peter | 9/10 | 6185 days | 18% |
| DimitriD | 5/10 | 6185 days | 14% |
| Kitty | 9/10 | 6185 days | 18% |
| Max | 10/10 | 6187 days | 18% |
| Andy Baker | 9/10 | 6188 days | 18% |
| Francesca Sabat | 8/10 | 6190 days | 18% |
| Robert | 10/10 | 6199 days | 18% |
| Melissa Gillespie | 10/10 | 6199 days | 18% |
| Hetty | 9/10 | 6200 days | 18% |
| Charles | 7/10 | 6201 days | 17% |
| Byleveld | 8/10 | 6201 days | 18% |
| JoseB | 8/10 | 6202 days | 18% |
| MrHebbard | 10/10 | 6202 days | 18% |
| ChristineM | 10/10 | 6202 days | 18% |
| Elrik frau | 10/10 | 6202 days | 18% |
| Louise | 9/10 | 6209 days | 18% |
| Douglas | 9/10 | 6210 days | 18% |
| CSander | 9/10 | 6226 days | 18% |
| Patricia | 8/10 | 6236 days | 18% |
| Dijk | 8/10 | 6240 days | 18% |
| Josefine | 10/10 | 6240 days | 18% |
| Ducolq | 5/10 | 6240 days | 14% |
| Jacques | 8/10 | 6241 days | 18% |
| Carina | 8/10 | 6247 days | 18% |
| Michael | 9/10 | 6278 days | 18% |
| silvia | 8/10 | 6281 days | 18% |
| Anouk | 8/10 | 6281 days | 18% |
| Mat | 9/10 | 6285 days | 18% |
| Paul | 8/10 | 6332 days | 18% |
| Helga | 9/10 | 6343 days | 18% |
| Mikel | 9/10 | 6408 days | 18% |
| Christine | 6/10 | 6416 days | 15% |
| Jim Summers | 9/10 | 6417 days | 18% |
| Franz | 7/10 | 6539 days | 17% |
| Linda and Peter | 10/10 | 6547 days | 18% |
| Mike and Judy | 8/10 | 6548 days | 18% |
| Methers | 9/10 | 6548 days | 18% |
| Denise | 10/10 | 6551 days | 18% |
| Kavanagh | 8/10 | 6551 days | 18% |
| De Wijn | 8/10 | 6554 days | 18% |
| Lisa Jones | 9/10 | 6555 days | 18% |
| Christian | 9/10 | 6555 days | 18% |
| Soren Danning | 8/10 | 6555 days | 18% |
| Jones | 10/10 | 6559 days | 18% |
| Orla Hansen | 10/10 | 6560 days | 18% |
| Bauer | 10/10 | 6566 days | 18% |
| Aharon | 10/10 | 6566 days | 18% |
| D.A. Mulder | 9/10 | 6567 days | 18% |
| Jurg Meister | 8/10 | 6568 days | 18% |
| Sally and David Wallis | 10/10 | 6568 days | 18% |
| Knol | 9/10 | 6569 days | 18% |
| Sue Randall | 8/10 | 6572 days | 18% |
| Cole Penelope | 10/10 | 6572 days | 18% |
| Blenkoe | 6/10 | 6573 days | 15% |
| Erwin de Kleijn | 8/10 | 6573 days | 18% |
| Thomas | 9/10 | 6582 days | 18% |
| Bex | 10/10 | 6595 days | 18% |
| Van Hoof | 9/10 | 6608 days | 18% |
| Tim | 10/10 | 6608 days | 18% |
| Gabriel Faber | 9/10 | 6643 days | 18% |
| Jonkers | 9/10 | 6645 days | 18% |
| Edwin | 10/10 | 6649 days | 18% |
| Lyn Saxon | 10/10 | 6653 days | 18% |
| Wendy Williams | 10/10 | 6660 days | 18% |
| Hans Knappmann | 10/10 | 6770 days | 18% |
| Phillipa | 10/10 | 6878 days | 18% |
| Stefan&Gerte | 9/10 | 6892 days | 18% |
| Cat | 9/10 | 6898 days | 18% |
| TeamFlorida | 10/10 | 6905 days | 18% |
| Jo | 9/10 | 6905 days | 18% |
| Fenke | 9/10 | 6910 days | 18% |
| Bas | 9/10 | 6910 days | 18% |
| Martin Smith | 9/10 | 6915 days | 18% |
| John Beirne | 9/10 | 6922 days | 18% |
| Palle | 9/10 | 6927 days | 18% |
| Anna | 9/10 | 6927 days | 18% |
| Svenja | 10/10 | 6933 days | 18% |
| Shirely | 10/10 | 6933 days | 18% |
| Rogier | 8/10 | 6934 days | 18% |
| Wendy | 8/10 | 6938 days | 18% |
| Kerry | 10/10 | 6943 days | 18% |
| Henrich | 10/10 | 6943 days | 18% |
| Messing | 10/10 | 6946 days | 18% |
| Rolf Kruger | 10/10 | 6946 days | 18% |
| Ian | 8/10 | 6950 days | 18% |
| Peter | 9/10 | 6950 days | 18% |
| Brian | 10/10 | 6950 days | 18% |
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
-4.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 53 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 | -4.08% |
| 198 | -4.10% |
| 199 | -4.13% |
| 200 | -4.15% |
| 201 | -4.17% |
| 202 | -4.19% |
| 203 | -4.21% |
| … | … |
Balancing Adjustment
1.75% 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.