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
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
90.37%
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 | 1269 days | 100% |
| Joanne&Ian | 10/10 | 1361 days | 76% |
| Geoff Steele | 8/10 | 2638 days | 15% |
| Axel and Patricia G | 6/10 | 2826 days | 11% |
| Leonie Westerhot | 8/10 | 2898 days | 12% |
| Ivanova R | 9/10 | 3155 days | 10% |
| Lorenz Pfisterer | 10/10 | 3167 days | 10% |
| Heidi et Mat | 8/10 | 3176 days | 10% |
| Anke Vater | 10/10 | 3177 days | 10% |
| Anouk Jongsma | 9/10 | 3185 days | 10% |
| Robin WUERFEL | 9/10 | 3257 days | 10% |
| Helen Parsons | 10/10 | 3577 days | 7% |
| Peter Beeloo | 9/10 | 3581 days | 7% |
| Laurent Arditi | 9/10 | 3765 days | 5% |
| Sheila Galpin | 9/10 | 3916 days | 4% |
| Simon Galpin | 9/10 | 3916 days | 4% |
| Douglas Dean | 10/10 | 3918 days | 4% |
| Stina Hultberg | 4/10 | 3922 days | 2% |
| Alexander Zimmer | 7/10 | 3923 days | 4% |
| Linus Larsson | 3/10 | 3924 days | 2% |
| Leon Courtney | 10/10 | 3925 days | 4% |
| Libby | 10/10 | 3939 days | 4% |
| Colin Billington | 7/10 | 3940 days | 3% |
| Don Wallis | 10/10 | 3943 days | 4% |
| Bill | 7/10 | 3944 days | 3% |
| Saskia | 5/10 | 3944 days | 3% |
| Terry Seaman | 8/10 | 3946 days | 4% |
| S B | 10/10 | 3959 days | 4% |
| M K | 10/10 | 3959 days | 4% |
| Alacchi Moustier | 10/10 | 3959 days | 4% |
| Maya Bakker-deDreu | 8/10 | 3967 days | 3% |
| Stuart Wilson | 8/10 | 3973 days | 3% |
| Fabian Lee | 5/10 | 3976 days | 3% |
| paul beacock | 10/10 | 3977 days | 3% |
| Gal Bero | 10/10 | 3980 days | 3% |
| Elly Zimmer | 6/10 | 3984 days | 3% |
| Bjorn Van Mulders | 10/10 | 3987 days | 3% |
| Kim Maertens | 9/10 | 3987 days | 3% |
| Steve Warren | 10/10 | 4099 days | 2% |
| hendrik king | 7/10 | 4191 days | 1% |
| Peter Jolliffe | 10/10 | 4283 days | 1% |
| Helen Dean | 10/10 | 4283 days | 1% |
| Dave Mertzig | 10/10 | 4283 days | 1% |
| Kathryn Pisco | 9/10 | 4289 days | 1% |
| Mike Pisco | 9/10 | 4289 days | 1% |
| Sebastian and Peter Beate | 10/10 | 4306 days | 1% |
| Fraser Goldsmith | 8/10 | 4307 days | 1% |
| Bucher | 9/10 | 4358 days | 0% |
| Marieke | 8/10 | 4359 days | 0% |
| Chew (Peter) | 7/10 | 4364 days | 0% |
| Natalie Nubler | 6/10 | 4365 days | 0% |
| Frans Derks | 9/10 | 4366 days | 0% |
| Meryem Buchwitz | 9/10 | 4386 days | 4% |
| roos wubben | 9/10 | 4389 days | 4% |
| Dagette | 9/10 | 4434 days | 4% |
| Teri C | 10/10 | 4464 days | 4% |
| Rob Klauer | 5/10 | 4636 days | 3% |
| Oliver Hardt | 9/10 | 4637 days | 4% |
| Val Phillips | 8/10 | 4641 days | 4% |
| Peter Adams | 9/10 | 4642 days | 4% |
| Harry Ruys | 8/10 | 4644 days | 4% |
| John McAllister | 9/10 | 4645 days | 4% |
| Keith Helen | 10/10 | 4648 days | 4% |
| Daniel Patricia | 9/10 | 4651 days | 4% |
| Laura Diepeveen | 8/10 | 4653 days | 4% |
| Fries | 10/10 | 4657 days | 4% |
| Karin Laurev | 10/10 | 4657 days | 4% |
| Gillian Rowe | 9/10 | 4658 days | 4% |
| Nigel Horrocks | 7/10 | 4658 days | 4% |
| Dieter Mangold | 10/10 | 4660 days | 4% |
| Lyn Deavin | 8/10 | 4660 days | 4% |
| Sabine & Stefan | 10/10 | 4661 days | 4% |
| Randewyk | 8/10 | 4661 days | 4% |
| Koster | 6/10 | 4663 days | 4% |
| Peter Aertssen | 7/10 | 4663 days | 4% |
| John A Jerome | 8/10 | 4663 days | 4% |
| Lynn Robinson | 10/10 | 4669 days | 4% |
| Heike | 9/10 | 4672 days | 4% |
| Robert MacLeod-Smith | 8/10 | 4673 days | 4% |
| Carel | 8/10 | 4674 days | 4% |
| Anna | 9/10 | 4675 days | 4% |
| Barrie Corless | 9/10 | 4676 days | 4% |
| Urban Reifler | 10/10 | 4688 days | 4% |
| Lyn Stainton | 10/10 | 4751 days | 4% |
| John & Vicki | 8/10 | 4755 days | 4% |
| jenckes | 9/10 | 4830 days | 4% |
| Debbie Smithers | 10/10 | 4972 days | 4% |
| Julie and Russ Charles | 10/10 | 4996 days | 4% |
| Kevin Wong | 10/10 | 4996 days | 4% |
| Rocipon | 8/10 | 4997 days | 4% |
| Margit and Corein Groenevelt | 7/10 | 5000 days | 4% |
| Richard Dudfield | 10/10 | 5000 days | 4% |
| John Duffy | 10/10 | 5000 days | 4% |
| Richard Gallichan | 9/10 | 5001 days | 4% |
| Jean Barker | 8/10 | 5001 days | 4% |
| Bette Eh | 10/10 | 5003 days | 4% |
| bryfrance | 10/10 | 5004 days | 4% |
| Juliane Kleiu | 10/10 | 5004 days | 4% |
| Claudia | 8/10 | 5004 days | 4% |
| E Brockbank | 9/10 | 5005 days | 4% |
| David Mellard | 10/10 | 5006 days | 4% |
| Bruce & Elaine Chote | 10/10 | 5006 days | 4% |
| Roland Berger | 7/10 | 5007 days | 4% |
| Ross | 9/10 | 5007 days | 4% |
| Gerstmann | 9/10 | 5008 days | 4% |
| Ekhard Wittkugel | 10/10 | 5010 days | 4% |
| Stephen Shearer | 10/10 | 5011 days | 4% |
| Monika | 10/10 | 5012 days | 4% |
| Betten | 9/10 | 5013 days | 4% |
| Stephen Jones | 9/10 | 5014 days | 4% |
| Mike and Diane Baker | 10/10 | 5015 days | 4% |
| Lenore Dejong | 10/10 | 5016 days | 4% |
| Andreas Fritesche | 8/10 | 5017 days | 4% |
| Matthys Kikke | 9/10 | 5018 days | 4% |
| Bucher Weruer | 10/10 | 5018 days | 4% |
| Camilla Andersson | 7/10 | 5019 days | 4% |
| Bob Adams | 10/10 | 5026 days | 4% |
| John | 8/10 | 5026 days | 4% |
| Katie Nicol | 10/10 | 5027 days | 4% |
| Martin Current | 9/10 | 5029 days | 4% |
| Teum and Orselien | 8/10 | 5030 days | 4% |
| Vanderhorst | 8/10 | 5030 days | 4% |
| John Price | 9/10 | 5032 days | 4% |
| Doris Schollenberger | 10/10 | 5032 days | 4% |
| Phil Hunter | 9/10 | 5033 days | 4% |
| Chris | 8/10 | 5034 days | 4% |
| Gordon Daniels | 8/10 | 5037 days | 4% |
| Hull | 9/10 | 5037 days | 4% |
| Lizzie | 10/10 | 5104 days | 4% |
| allesca | 10/10 | 5134 days | 4% |
| M Schram | 8/10 | 5297 days | 4% |
| Versteeg | 9/10 | 5300 days | 4% |
| Lomas | 10/10 | 5309 days | 4% |
| Maureen | 10/10 | 5313 days | 4% |
| Amy | 9/10 | 5318 days | 4% |
| Don & Geraldine | 10/10 | 5354 days | 4% |
| Hans and Astrid | 10/10 | 5356 days | 4% |
| Agnes | 10/10 | 5358 days | 4% |
| maggie Webster | 10/10 | 5365 days | 4% |
| Keita-Karen Buchanan | 10/10 | 5365 days | 4% |
| Lars Taarnhoej | 7/10 | 5365 days | 4% |
| markus Brandenberger | 10/10 | 5366 days | 4% |
| Jvjm Family | 9/10 | 5367 days | 4% |
| David B | 7/10 | 5374 days | 4% |
| Margaret O'Sullivan | 8/10 | 5374 days | 4% |
| Chris el capitan | 9/10 | 5384 days | 4% |
| John Cox | 9/10 | 5385 days | 4% |
| Muller Weissert | 8/10 | 5386 days | 4% |
| Brian Morris | 9/10 | 5388 days | 4% |
| Jobbs | 10/10 | 5388 days | 4% |
| Maria Newton | 9/10 | 5389 days | 4% |
| Dieter Groscurth | 8/10 | 5389 days | 4% |
| Gordon and Joyce | 9/10 | 5389 days | 4% |
| Remko Ebbens | 9/10 | 5392 days | 4% |
| Thijs Schoemaker | 8/10 | 5393 days | 4% |
| Armand | 5/10 | 5393 days | 3% |
| Ferth | 10/10 | 5393 days | 4% |
| J Kempeneers | 10/10 | 5393 days | 4% |
| Thea X | 5/10 | 5402 days | 3% |
| Keith Wilde | 10/10 | 5402 days | 4% |
| Dick Rosman | 9/10 | 5403 days | 4% |
| Terry Phillips | 5/10 | 5404 days | 3% |
| Jules | 8/10 | 5404 days | 4% |
| Carl Diehl | 9/10 | 5405 days | 4% |
| Paul Schoepfer | 9/10 | 5405 days | 4% |
| Uwe Rieper | 10/10 | 5406 days | 4% |
| Yvonne Ing | 10/10 | 5406 days | 4% |
| Diane Chapple | 9/10 | 5406 days | 4% |
| wannab | 9/10 | 5407 days | 4% |
| Kevin and Teresa | 9/10 | 5407 days | 4% |
| Christiane Lindenberg | 9/10 | 5416 days | 4% |
| Nigel Armstrong | 9/10 | 5418 days | 4% |
| Buss | 10/10 | 5420 days | 4% |
| John J | 9/10 | 5421 days | 4% |
| Heinrich Hax | 10/10 | 5427 days | 4% |
| marcusba | 8/10 | 5450 days | 4% |
| tanh | 9/10 | 5454 days | 4% |
| mariak | 7/10 | 5455 days | 4% |
| Silvana Thom | 10/10 | 5479 days | 4% |
| Wolfgang Dittrich | 10/10 | 5479 days | 4% |
| Chris Bulman | 10/10 | 5480 days | 4% |
| andyge | 8/10 | 5499 days | 4% |
| Ritag | 9/10 | 5585 days | 4% |
| regw | 10/10 | 5589 days | 4% |
| Cate | 9/10 | 5713 days | 4% |
| ginekek | 9/10 | 5713 days | 4% |
| geoffelizabeth | 9/10 | 5713 days | 4% |
| mikestep | 9/10 | 5713 days | 4% |
| EllenorO | 10/10 | 5714 days | 4% |
| Van Lent | 9/10 | 5715 days | 4% |
| Anna | 10/10 | 5715 days | 4% |
| Mike | 9/10 | 5718 days | 4% |
| Richard | 10/10 | 5723 days | 4% |
| Michael Walsall | 10/10 | 5723 days | 4% |
| AstridVG | 8/10 | 5730 days | 4% |
| Christine | 9/10 | 5730 days | 4% |
| Peter | 9/10 | 5730 days | 4% |
| DimitriD | 5/10 | 5730 days | 3% |
| Kitty | 9/10 | 5730 days | 4% |
| Max | 10/10 | 5733 days | 4% |
| Andy Baker | 9/10 | 5733 days | 4% |
| Francesca Sabat | 8/10 | 5735 days | 4% |
| Robert | 10/10 | 5744 days | 4% |
| Melissa Gillespie | 10/10 | 5744 days | 4% |
| Hetty | 9/10 | 5745 days | 4% |
| Charles | 7/10 | 5746 days | 4% |
| Byleveld | 8/10 | 5746 days | 4% |
| JoseB | 8/10 | 5747 days | 4% |
| MrHebbard | 10/10 | 5747 days | 4% |
| ChristineM | 10/10 | 5747 days | 4% |
| Elrik frau | 10/10 | 5747 days | 4% |
| Louise | 9/10 | 5754 days | 4% |
| Douglas | 9/10 | 5755 days | 4% |
| CSander | 9/10 | 5771 days | 4% |
| Patricia | 8/10 | 5782 days | 4% |
| Dijk | 8/10 | 5786 days | 4% |
| Josefine | 10/10 | 5786 days | 4% |
| Ducolq | 5/10 | 5786 days | 3% |
| Jacques | 8/10 | 5787 days | 4% |
| Carina | 8/10 | 5792 days | 4% |
| Michael | 9/10 | 5823 days | 4% |
| silvia | 8/10 | 5826 days | 4% |
| Anouk | 8/10 | 5826 days | 4% |
| Mat | 9/10 | 5831 days | 4% |
| Paul | 8/10 | 5877 days | 4% |
| Helga | 9/10 | 5888 days | 4% |
| Mikel | 9/10 | 5953 days | 4% |
| Christine | 6/10 | 5962 days | 4% |
| Jim Summers | 9/10 | 5962 days | 4% |
| Franz | 7/10 | 6084 days | 4% |
| Linda and Peter | 10/10 | 6092 days | 4% |
| Mike and Judy | 8/10 | 6093 days | 4% |
| Methers | 9/10 | 6093 days | 4% |
| Denise | 10/10 | 6096 days | 4% |
| Kavanagh | 8/10 | 6096 days | 4% |
| De Wijn | 8/10 | 6099 days | 4% |
| Lisa Jones | 9/10 | 6100 days | 4% |
| Christian | 9/10 | 6100 days | 4% |
| Soren Danning | 8/10 | 6100 days | 4% |
| Jones | 10/10 | 6104 days | 4% |
| Orla Hansen | 10/10 | 6105 days | 4% |
| Bauer | 10/10 | 6111 days | 4% |
| Aharon | 10/10 | 6111 days | 4% |
| D.A. Mulder | 9/10 | 6112 days | 4% |
| Jurg Meister | 8/10 | 6113 days | 4% |
| Sally and David Wallis | 10/10 | 6113 days | 4% |
| Knol | 9/10 | 6114 days | 4% |
| Sue Randall | 8/10 | 6117 days | 4% |
| Cole Penelope | 10/10 | 6117 days | 4% |
| Blenkoe | 6/10 | 6118 days | 4% |
| Erwin de Kleijn | 8/10 | 6118 days | 4% |
| Thomas | 9/10 | 6127 days | 4% |
| Bex | 10/10 | 6141 days | 4% |
| Van Hoof | 9/10 | 6153 days | 4% |
| Tim | 10/10 | 6153 days | 4% |
| Gabriel Faber | 9/10 | 6188 days | 4% |
| Jonkers | 9/10 | 6190 days | 4% |
| Edwin | 10/10 | 6194 days | 4% |
| Lyn Saxon | 10/10 | 6198 days | 4% |
| Wendy Williams | 10/10 | 6205 days | 4% |
| Hans Knappmann | 10/10 | 6315 days | 4% |
| Phillipa | 10/10 | 6423 days | 4% |
| Stefan&Gerte | 9/10 | 6437 days | 4% |
| Cat | 9/10 | 6443 days | 4% |
| TeamFlorida | 10/10 | 6450 days | 4% |
| Jo | 9/10 | 6450 days | 4% |
| Fenke | 9/10 | 6455 days | 4% |
| Bas | 9/10 | 6455 days | 4% |
| Martin Smith | 9/10 | 6460 days | 4% |
| John Beirne | 9/10 | 6467 days | 4% |
| Palle | 9/10 | 6472 days | 4% |
| Anna | 9/10 | 6472 days | 4% |
| Svenja | 10/10 | 6478 days | 4% |
| Shirely | 10/10 | 6478 days | 4% |
| Rogier | 8/10 | 6479 days | 4% |
| Wendy | 8/10 | 6483 days | 4% |
| Kerry | 10/10 | 6488 days | 4% |
| Henrich | 10/10 | 6488 days | 4% |
| Messing | 10/10 | 6491 days | 4% |
| Rolf Kruger | 10/10 | 6491 days | 4% |
| Ian | 8/10 | 6495 days | 4% |
| Peter | 9/10 | 6495 days | 4% |
| Brian | 10/10 | 6495 days | 4% |
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 43 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
1.58% 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
88%
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.