Kia ora, 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
284 Valid Reviews
The Doubtful Sound Day Cruise experience has a total of 286 reviews. There are 284 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 284 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 105 |
|
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% |
88.56% Average
The raw data average (mean) for all the Doubtful Sound Day Cruise valid reviews is 88.56% and is based on 284 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 284 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
92.02%
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 |
|---|---|---|---|
| Cees Koeman | 10/10 | 128 days | 100% |
| Nanay | 10/10 | 1834 days | 5% |
| Joanne&Ian | 10/10 | 1926 days | 5% |
| Geoff Steele | 8/10 | 3202 days | 2% |
| Axel and Patricia G | 6/10 | 3391 days | 2% |
| Leonie Westerhot | 8/10 | 3463 days | 2% |
| Ivanova R | 9/10 | 3720 days | 1% |
| Lorenz Pfisterer | 10/10 | 3732 days | 1% |
| Heidi et Mat | 8/10 | 3741 days | 1% |
| Anke Vater | 10/10 | 3742 days | 1% |
| Anouk Jongsma | 9/10 | 3750 days | 1% |
| Robin WUERFEL | 9/10 | 3822 days | 1% |
| Helen Parsons | 10/10 | 4142 days | 0% |
| Peter Beeloo | 9/10 | 4145 days | 0% |
| Laurent Arditi | 9/10 | 4330 days | 0% |
| Sheila Galpin | 9/10 | 4481 days | 1% |
| Simon Galpin | 9/10 | 4481 days | 1% |
| Douglas Dean | 10/10 | 4483 days | 1% |
| Stina Hultberg | 4/10 | 4487 days | 1% |
| Alexander Zimmer | 7/10 | 4488 days | 1% |
| Linus Larsson | 3/10 | 4489 days | 0% |
| Leon Courtney | 10/10 | 4490 days | 1% |
| Libby | 10/10 | 4504 days | 1% |
| Colin Billington | 7/10 | 4505 days | 1% |
| Don Wallis | 10/10 | 4508 days | 1% |
| Bill | 7/10 | 4509 days | 1% |
| Saskia | 5/10 | 4509 days | 1% |
| Terry Seaman | 8/10 | 4511 days | 1% |
| S B | 10/10 | 4524 days | 1% |
| M K | 10/10 | 4524 days | 1% |
| Alacchi Moustier | 10/10 | 4524 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4532 days | 1% |
| Stuart Wilson | 8/10 | 4538 days | 1% |
| Fabian Lee | 5/10 | 4541 days | 1% |
| paul beacock | 10/10 | 4542 days | 1% |
| Gal Bero | 10/10 | 4545 days | 1% |
| Elly Zimmer | 6/10 | 4549 days | 1% |
| Bjorn Van Mulders | 10/10 | 4552 days | 1% |
| Kim Maertens | 9/10 | 4552 days | 1% |
| Steve Warren | 10/10 | 4664 days | 1% |
| hendrik king | 7/10 | 4756 days | 1% |
| Peter Jolliffe | 10/10 | 4848 days | 1% |
| Helen Dean | 10/10 | 4848 days | 1% |
| Dave Mertzig | 10/10 | 4848 days | 1% |
| Kathryn Pisco | 9/10 | 4854 days | 1% |
| Mike Pisco | 9/10 | 4854 days | 1% |
| Sebastian and Peter Beate | 10/10 | 4871 days | 1% |
| Fraser Goldsmith | 8/10 | 4872 days | 1% |
| Bucher | 9/10 | 4923 days | 1% |
| Marieke | 8/10 | 4924 days | 1% |
| Chew (Peter) | 7/10 | 4929 days | 1% |
| Natalie Nubler | 6/10 | 4930 days | 1% |
| Frans Derks | 9/10 | 4931 days | 1% |
| Meryem Buchwitz | 9/10 | 4951 days | 1% |
| roos wubben | 9/10 | 4954 days | 1% |
| Dagette | 9/10 | 4999 days | 1% |
| Teri C | 10/10 | 5029 days | 1% |
| Rob Klauer | 5/10 | 5201 days | 1% |
| Oliver Hardt | 9/10 | 5202 days | 1% |
| Val Phillips | 8/10 | 5206 days | 1% |
| Peter Adams | 9/10 | 5207 days | 1% |
| Harry Ruys | 8/10 | 5209 days | 1% |
| John McAllister | 9/10 | 5210 days | 1% |
| Keith Helen | 10/10 | 5213 days | 1% |
| Daniel Patricia | 9/10 | 5216 days | 1% |
| Laura Diepeveen | 8/10 | 5218 days | 1% |
| Fries | 10/10 | 5222 days | 1% |
| Karin Laurev | 10/10 | 5222 days | 1% |
| Gillian Rowe | 9/10 | 5223 days | 1% |
| Nigel Horrocks | 7/10 | 5223 days | 1% |
| Dieter Mangold | 10/10 | 5225 days | 1% |
| Lyn Deavin | 8/10 | 5225 days | 1% |
| Sabine & Stefan | 10/10 | 5226 days | 1% |
| Randewyk | 8/10 | 5226 days | 1% |
| Koster | 6/10 | 5228 days | 1% |
| Peter Aertssen | 7/10 | 5228 days | 1% |
| John A Jerome | 8/10 | 5228 days | 1% |
| Lynn Robinson | 10/10 | 5234 days | 1% |
| Heike | 9/10 | 5237 days | 1% |
| Robert MacLeod-Smith | 8/10 | 5238 days | 1% |
| Carel | 8/10 | 5239 days | 1% |
| Anna | 9/10 | 5240 days | 1% |
| Barrie Corless | 9/10 | 5241 days | 1% |
| Urban Reifler | 10/10 | 5253 days | 1% |
| Lyn Stainton | 10/10 | 5316 days | 1% |
| John & Vicki | 8/10 | 5320 days | 1% |
| jenckes | 9/10 | 5395 days | 1% |
| Debbie Smithers | 10/10 | 5537 days | 1% |
| Julie and Russ Charles | 10/10 | 5561 days | 1% |
| Kevin Wong | 10/10 | 5561 days | 1% |
| Rocipon | 8/10 | 5562 days | 1% |
| Margit and Corein Groenevelt | 7/10 | 5565 days | 1% |
| Richard Dudfield | 10/10 | 5565 days | 1% |
| John Duffy | 10/10 | 5565 days | 1% |
| Richard Gallichan | 9/10 | 5566 days | 1% |
| Jean Barker | 8/10 | 5566 days | 1% |
| Bette Eh | 10/10 | 5568 days | 1% |
| bryfrance | 10/10 | 5569 days | 1% |
| Juliane Kleiu | 10/10 | 5569 days | 1% |
| Claudia | 8/10 | 5569 days | 1% |
| E Brockbank | 9/10 | 5570 days | 1% |
| David Mellard | 10/10 | 5571 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5571 days | 1% |
| Roland Berger | 7/10 | 5572 days | 1% |
| Ross | 9/10 | 5572 days | 1% |
| Gerstmann | 9/10 | 5573 days | 1% |
| Ekhard Wittkugel | 10/10 | 5575 days | 1% |
| Stephen Shearer | 10/10 | 5576 days | 1% |
| Monika | 10/10 | 5577 days | 1% |
| Betten | 9/10 | 5578 days | 1% |
| Stephen Jones | 9/10 | 5579 days | 1% |
| Mike and Diane Baker | 10/10 | 5580 days | 1% |
| Lenore Dejong | 10/10 | 5581 days | 1% |
| Andreas Fritesche | 8/10 | 5582 days | 1% |
| Matthys Kikke | 9/10 | 5583 days | 1% |
| Bucher Weruer | 10/10 | 5583 days | 1% |
| Camilla Andersson | 7/10 | 5584 days | 1% |
| Bob Adams | 10/10 | 5591 days | 1% |
| John | 8/10 | 5591 days | 1% |
| Katie Nicol | 10/10 | 5592 days | 1% |
| Martin Current | 9/10 | 5594 days | 1% |
| Teum and Orselien | 8/10 | 5595 days | 1% |
| Vanderhorst | 8/10 | 5595 days | 1% |
| John Price | 9/10 | 5597 days | 1% |
| Doris Schollenberger | 10/10 | 5597 days | 1% |
| Phil Hunter | 9/10 | 5598 days | 1% |
| Chris | 8/10 | 5599 days | 1% |
| Gordon Daniels | 8/10 | 5602 days | 1% |
| Hull | 9/10 | 5602 days | 1% |
| Lizzie | 10/10 | 5669 days | 1% |
| allesca | 10/10 | 5699 days | 1% |
| M Schram | 8/10 | 5862 days | 1% |
| Versteeg | 9/10 | 5865 days | 1% |
| Lomas | 10/10 | 5874 days | 1% |
| Maureen | 10/10 | 5878 days | 1% |
| Amy | 9/10 | 5883 days | 1% |
| Don & Geraldine | 10/10 | 5919 days | 1% |
| Hans and Astrid | 10/10 | 5921 days | 1% |
| Agnes | 10/10 | 5923 days | 1% |
| maggie Webster | 10/10 | 5930 days | 1% |
| Keita-Karen Buchanan | 10/10 | 5930 days | 1% |
| Lars Taarnhoej | 7/10 | 5930 days | 1% |
| markus Brandenberger | 10/10 | 5931 days | 1% |
| Jvjm Family | 9/10 | 5932 days | 1% |
| David B | 7/10 | 5939 days | 1% |
| Margaret O'Sullivan | 8/10 | 5939 days | 1% |
| Chris el capitan | 9/10 | 5949 days | 1% |
| John Cox | 9/10 | 5950 days | 1% |
| Muller Weissert | 8/10 | 5951 days | 1% |
| Brian Morris | 9/10 | 5953 days | 1% |
| Jobbs | 10/10 | 5953 days | 1% |
| Maria Newton | 9/10 | 5954 days | 1% |
| Dieter Groscurth | 8/10 | 5954 days | 1% |
| Gordon and Joyce | 9/10 | 5954 days | 1% |
| Remko Ebbens | 9/10 | 5957 days | 1% |
| Thijs Schoemaker | 8/10 | 5958 days | 1% |
| Armand | 5/10 | 5958 days | 1% |
| Ferth | 10/10 | 5958 days | 1% |
| J Kempeneers | 10/10 | 5958 days | 1% |
| Thea X | 5/10 | 5967 days | 1% |
| Keith Wilde | 10/10 | 5967 days | 1% |
| Dick Rosman | 9/10 | 5968 days | 1% |
| Terry Phillips | 5/10 | 5969 days | 1% |
| Jules | 8/10 | 5969 days | 1% |
| Carl Diehl | 9/10 | 5970 days | 1% |
| Paul Schoepfer | 9/10 | 5970 days | 1% |
| Uwe Rieper | 10/10 | 5971 days | 1% |
| Yvonne Ing | 10/10 | 5971 days | 1% |
| Diane Chapple | 9/10 | 5971 days | 1% |
| wannab | 9/10 | 5972 days | 1% |
| Kevin and Teresa | 9/10 | 5972 days | 1% |
| Christiane Lindenberg | 9/10 | 5981 days | 1% |
| Nigel Armstrong | 9/10 | 5983 days | 1% |
| Buss | 10/10 | 5985 days | 1% |
| John J | 9/10 | 5986 days | 1% |
| Heinrich Hax | 10/10 | 5992 days | 1% |
| marcusba | 8/10 | 6015 days | 1% |
| tanh | 9/10 | 6019 days | 1% |
| mariak | 7/10 | 6020 days | 1% |
| Silvana Thom | 10/10 | 6044 days | 1% |
| Wolfgang Dittrich | 10/10 | 6044 days | 1% |
| Chris Bulman | 10/10 | 6045 days | 1% |
| andyge | 8/10 | 6064 days | 1% |
| Ritag | 9/10 | 6150 days | 1% |
| regw | 10/10 | 6154 days | 1% |
| Cate | 9/10 | 6277 days | 1% |
| ginekek | 9/10 | 6278 days | 1% |
| geoffelizabeth | 9/10 | 6278 days | 1% |
| mikestep | 9/10 | 6278 days | 1% |
| EllenorO | 10/10 | 6278 days | 1% |
| Van Lent | 9/10 | 6279 days | 1% |
| Anna | 10/10 | 6280 days | 1% |
| Mike | 9/10 | 6282 days | 1% |
| Richard | 10/10 | 6287 days | 1% |
| Michael Walsall | 10/10 | 6288 days | 1% |
| AstridVG | 8/10 | 6294 days | 1% |
| Christine | 9/10 | 6294 days | 1% |
| Peter | 9/10 | 6294 days | 1% |
| DimitriD | 5/10 | 6295 days | 1% |
| Kitty | 9/10 | 6295 days | 1% |
| Max | 10/10 | 6297 days | 1% |
| Andy Baker | 9/10 | 6298 days | 1% |
| Francesca Sabat | 8/10 | 6300 days | 1% |
| Robert | 10/10 | 6308 days | 1% |
| Melissa Gillespie | 10/10 | 6309 days | 1% |
| Hetty | 9/10 | 6309 days | 1% |
| Charles | 7/10 | 6310 days | 1% |
| Byleveld | 8/10 | 6311 days | 1% |
| JoseB | 8/10 | 6312 days | 1% |
| MrHebbard | 10/10 | 6312 days | 1% |
| ChristineM | 10/10 | 6312 days | 1% |
| Elrik frau | 10/10 | 6312 days | 1% |
| Louise | 9/10 | 6318 days | 1% |
| Douglas | 9/10 | 6319 days | 1% |
| CSander | 9/10 | 6336 days | 1% |
| Patricia | 8/10 | 6346 days | 1% |
| Dijk | 8/10 | 6350 days | 1% |
| Josefine | 10/10 | 6350 days | 1% |
| Ducolq | 5/10 | 6350 days | 1% |
| Jacques | 8/10 | 6351 days | 1% |
| Carina | 8/10 | 6356 days | 1% |
| Michael | 9/10 | 6388 days | 1% |
| silvia | 8/10 | 6390 days | 1% |
| Anouk | 8/10 | 6390 days | 1% |
| Mat | 9/10 | 6395 days | 1% |
| Paul | 8/10 | 6442 days | 1% |
| Helga | 9/10 | 6452 days | 1% |
| Mikel | 9/10 | 6517 days | 1% |
| Christine | 6/10 | 6526 days | 1% |
| Jim Summers | 9/10 | 6526 days | 1% |
| Franz | 7/10 | 6649 days | 1% |
| Linda and Peter | 10/10 | 6657 days | 1% |
| Mike and Judy | 8/10 | 6658 days | 1% |
| Methers | 9/10 | 6658 days | 1% |
| Denise | 10/10 | 6661 days | 1% |
| Kavanagh | 8/10 | 6661 days | 1% |
| De Wijn | 8/10 | 6664 days | 1% |
| Lisa Jones | 9/10 | 6665 days | 1% |
| Christian | 9/10 | 6665 days | 1% |
| Soren Danning | 8/10 | 6665 days | 1% |
| Jones | 10/10 | 6669 days | 1% |
| Orla Hansen | 10/10 | 6670 days | 1% |
| Bauer | 10/10 | 6676 days | 1% |
| Aharon | 10/10 | 6676 days | 1% |
| D.A. Mulder | 9/10 | 6677 days | 1% |
| Jurg Meister | 8/10 | 6678 days | 1% |
| Sally and David Wallis | 10/10 | 6678 days | 1% |
| Knol | 9/10 | 6679 days | 1% |
| Sue Randall | 8/10 | 6682 days | 1% |
| Cole Penelope | 10/10 | 6682 days | 1% |
| Blenkoe | 6/10 | 6683 days | 1% |
| Erwin de Kleijn | 8/10 | 6683 days | 1% |
| Thomas | 9/10 | 6692 days | 1% |
| Bex | 10/10 | 6705 days | 1% |
| Van Hoof | 9/10 | 6718 days | 1% |
| Tim | 10/10 | 6718 days | 1% |
| Gabriel Faber | 9/10 | 6753 days | 1% |
| Jonkers | 9/10 | 6755 days | 1% |
| Edwin | 10/10 | 6759 days | 1% |
| Lyn Saxon | 10/10 | 6763 days | 1% |
| Wendy Williams | 10/10 | 6770 days | 1% |
| Hans Knappmann | 10/10 | 6880 days | 1% |
| Phillipa | 10/10 | 6988 days | 1% |
| Stefan&Gerte | 9/10 | 7002 days | 1% |
| Cat | 9/10 | 7008 days | 1% |
| TeamFlorida | 10/10 | 7015 days | 1% |
| Jo | 9/10 | 7015 days | 1% |
| Fenke | 9/10 | 7020 days | 1% |
| Bas | 9/10 | 7020 days | 1% |
| Martin Smith | 9/10 | 7025 days | 1% |
| John Beirne | 9/10 | 7032 days | 1% |
| Palle | 9/10 | 7037 days | 1% |
| Anna | 9/10 | 7037 days | 1% |
| Svenja | 10/10 | 7043 days | 1% |
| Shirely | 10/10 | 7043 days | 1% |
| Rogier | 8/10 | 7044 days | 1% |
| Wendy | 8/10 | 7048 days | 1% |
| Kerry | 10/10 | 7053 days | 1% |
| Henrich | 10/10 | 7053 days | 1% |
| Messing | 10/10 | 7056 days | 1% |
| Rolf Kruger | 10/10 | 7056 days | 1% |
| Ian | 8/10 | 7060 days | 1% |
| Peter | 9/10 | 7060 days | 1% |
| Brian | 10/10 | 7060 days | 1% |
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
-1.29% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 112 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 112 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 109 | -1.26% |
| 110 | -1.27% |
| 111 | -1.28% |
| 112 | -1.29% |
| 113 | -1.31% |
| 114 | -1.32% |
| 115 | -1.33% |
| … | … |
Balancing Adjustment
0.90% 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
92%
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.