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
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 | 1648 days | 100% |
| Joanne&Ian | 10/10 | 1740 days | 80% |
| Geoff Steele | 8/10 | 3017 days | 38% |
| Axel and Patricia G | 6/10 | 3205 days | 29% |
| Leonie Westerhot | 8/10 | 3277 days | 31% |
| Ivanova R | 9/10 | 3534 days | 24% |
| Lorenz Pfisterer | 10/10 | 3546 days | 24% |
| Heidi et Mat | 8/10 | 3555 days | 23% |
| Anke Vater | 10/10 | 3556 days | 23% |
| Anouk Jongsma | 9/10 | 3564 days | 23% |
| Robin WUERFEL | 9/10 | 3636 days | 21% |
| Helen Parsons | 10/10 | 3956 days | 12% |
| Peter Beeloo | 9/10 | 3960 days | 12% |
| Laurent Arditi | 9/10 | 4144 days | 6% |
| Sheila Galpin | 9/10 | 4295 days | 2% |
| Simon Galpin | 9/10 | 4295 days | 2% |
| Douglas Dean | 10/10 | 4297 days | 2% |
| Stina Hultberg | 4/10 | 4301 days | 1% |
| Alexander Zimmer | 7/10 | 4302 days | 2% |
| Linus Larsson | 3/10 | 4303 days | 1% |
| Leon Courtney | 10/10 | 4304 days | 2% |
| Libby | 10/10 | 4318 days | 1% |
| Colin Billington | 7/10 | 4319 days | 1% |
| Don Wallis | 10/10 | 4322 days | 1% |
| Bill | 7/10 | 4323 days | 1% |
| Saskia | 5/10 | 4323 days | 1% |
| Terry Seaman | 8/10 | 4325 days | 1% |
| S B | 10/10 | 4338 days | 1% |
| M K | 10/10 | 4338 days | 1% |
| Alacchi Moustier | 10/10 | 4338 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4346 days | 1% |
| Stuart Wilson | 8/10 | 4352 days | 0% |
| Fabian Lee | 5/10 | 4355 days | 0% |
| paul beacock | 10/10 | 4356 days | 0% |
| Gal Bero | 10/10 | 4359 days | 0% |
| Elly Zimmer | 6/10 | 4363 days | 0% |
| Bjorn Van Mulders | 10/10 | 4366 days | 0% |
| Kim Maertens | 9/10 | 4366 days | 0% |
| Steve Warren | 10/10 | 4478 days | 14% |
| hendrik king | 7/10 | 4570 days | 13% |
| Peter Jolliffe | 10/10 | 4662 days | 14% |
| Helen Dean | 10/10 | 4662 days | 14% |
| Dave Mertzig | 10/10 | 4662 days | 14% |
| Kathryn Pisco | 9/10 | 4668 days | 14% |
| Mike Pisco | 9/10 | 4668 days | 14% |
| Sebastian and Peter Beate | 10/10 | 4685 days | 14% |
| Fraser Goldsmith | 8/10 | 4686 days | 14% |
| Bucher | 9/10 | 4737 days | 14% |
| Marieke | 8/10 | 4738 days | 14% |
| Chew (Peter) | 7/10 | 4743 days | 13% |
| Natalie Nubler | 6/10 | 4744 days | 12% |
| Frans Derks | 9/10 | 4745 days | 14% |
| Meryem Buchwitz | 9/10 | 4765 days | 14% |
| roos wubben | 9/10 | 4768 days | 14% |
| Dagette | 9/10 | 4813 days | 14% |
| Teri C | 10/10 | 4843 days | 14% |
| Rob Klauer | 5/10 | 5015 days | 11% |
| Oliver Hardt | 9/10 | 5016 days | 14% |
| Val Phillips | 8/10 | 5020 days | 14% |
| Peter Adams | 9/10 | 5021 days | 14% |
| Harry Ruys | 8/10 | 5023 days | 14% |
| John McAllister | 9/10 | 5024 days | 14% |
| Keith Helen | 10/10 | 5027 days | 14% |
| Daniel Patricia | 9/10 | 5030 days | 14% |
| Laura Diepeveen | 8/10 | 5032 days | 14% |
| Fries | 10/10 | 5036 days | 14% |
| Karin Laurev | 10/10 | 5036 days | 14% |
| Gillian Rowe | 9/10 | 5037 days | 14% |
| Nigel Horrocks | 7/10 | 5037 days | 13% |
| Dieter Mangold | 10/10 | 5039 days | 14% |
| Lyn Deavin | 8/10 | 5039 days | 14% |
| Sabine & Stefan | 10/10 | 5040 days | 14% |
| Randewyk | 8/10 | 5040 days | 14% |
| Koster | 6/10 | 5042 days | 12% |
| Peter Aertssen | 7/10 | 5042 days | 13% |
| John A Jerome | 8/10 | 5042 days | 14% |
| Lynn Robinson | 10/10 | 5048 days | 14% |
| Heike | 9/10 | 5051 days | 14% |
| Robert MacLeod-Smith | 8/10 | 5052 days | 14% |
| Carel | 8/10 | 5053 days | 14% |
| Anna | 9/10 | 5054 days | 14% |
| Barrie Corless | 9/10 | 5055 days | 14% |
| Urban Reifler | 10/10 | 5067 days | 14% |
| Lyn Stainton | 10/10 | 5130 days | 14% |
| John & Vicki | 8/10 | 5134 days | 14% |
| jenckes | 9/10 | 5209 days | 14% |
| Debbie Smithers | 10/10 | 5351 days | 14% |
| Julie and Russ Charles | 10/10 | 5375 days | 14% |
| Kevin Wong | 10/10 | 5375 days | 14% |
| Rocipon | 8/10 | 5376 days | 14% |
| Margit and Corein Groenevelt | 7/10 | 5379 days | 13% |
| Richard Dudfield | 10/10 | 5379 days | 14% |
| John Duffy | 10/10 | 5379 days | 14% |
| Richard Gallichan | 9/10 | 5380 days | 14% |
| Jean Barker | 8/10 | 5380 days | 14% |
| Bette Eh | 10/10 | 5382 days | 14% |
| bryfrance | 10/10 | 5383 days | 14% |
| Juliane Kleiu | 10/10 | 5383 days | 14% |
| Claudia | 8/10 | 5383 days | 14% |
| E Brockbank | 9/10 | 5384 days | 14% |
| David Mellard | 10/10 | 5385 days | 14% |
| Bruce & Elaine Chote | 10/10 | 5385 days | 14% |
| Roland Berger | 7/10 | 5386 days | 13% |
| Ross | 9/10 | 5386 days | 14% |
| Gerstmann | 9/10 | 5387 days | 14% |
| Ekhard Wittkugel | 10/10 | 5389 days | 14% |
| Stephen Shearer | 10/10 | 5390 days | 14% |
| Monika | 10/10 | 5391 days | 14% |
| Betten | 9/10 | 5392 days | 14% |
| Stephen Jones | 9/10 | 5393 days | 14% |
| Mike and Diane Baker | 10/10 | 5394 days | 14% |
| Lenore Dejong | 10/10 | 5395 days | 14% |
| Andreas Fritesche | 8/10 | 5396 days | 14% |
| Matthys Kikke | 9/10 | 5397 days | 14% |
| Bucher Weruer | 10/10 | 5397 days | 14% |
| Camilla Andersson | 7/10 | 5398 days | 13% |
| Bob Adams | 10/10 | 5405 days | 14% |
| John | 8/10 | 5405 days | 14% |
| Katie Nicol | 10/10 | 5406 days | 14% |
| Martin Current | 9/10 | 5408 days | 14% |
| Teum and Orselien | 8/10 | 5409 days | 14% |
| Vanderhorst | 8/10 | 5409 days | 14% |
| John Price | 9/10 | 5411 days | 14% |
| Doris Schollenberger | 10/10 | 5411 days | 14% |
| Phil Hunter | 9/10 | 5412 days | 14% |
| Chris | 8/10 | 5413 days | 14% |
| Gordon Daniels | 8/10 | 5416 days | 14% |
| Hull | 9/10 | 5416 days | 14% |
| Lizzie | 10/10 | 5483 days | 14% |
| allesca | 10/10 | 5513 days | 14% |
| M Schram | 8/10 | 5676 days | 14% |
| Versteeg | 9/10 | 5679 days | 14% |
| Lomas | 10/10 | 5688 days | 14% |
| Maureen | 10/10 | 5692 days | 14% |
| Amy | 9/10 | 5697 days | 14% |
| Don & Geraldine | 10/10 | 5733 days | 14% |
| Hans and Astrid | 10/10 | 5735 days | 14% |
| Agnes | 10/10 | 5737 days | 14% |
| maggie Webster | 10/10 | 5744 days | 14% |
| Keita-Karen Buchanan | 10/10 | 5744 days | 14% |
| Lars Taarnhoej | 7/10 | 5744 days | 13% |
| markus Brandenberger | 10/10 | 5745 days | 14% |
| Jvjm Family | 9/10 | 5746 days | 14% |
| David B | 7/10 | 5753 days | 13% |
| Margaret O'Sullivan | 8/10 | 5753 days | 14% |
| Chris el capitan | 9/10 | 5763 days | 14% |
| John Cox | 9/10 | 5764 days | 14% |
| Muller Weissert | 8/10 | 5765 days | 14% |
| Brian Morris | 9/10 | 5767 days | 14% |
| Jobbs | 10/10 | 5767 days | 14% |
| Maria Newton | 9/10 | 5768 days | 14% |
| Dieter Groscurth | 8/10 | 5768 days | 14% |
| Gordon and Joyce | 9/10 | 5768 days | 14% |
| Remko Ebbens | 9/10 | 5771 days | 14% |
| Thijs Schoemaker | 8/10 | 5772 days | 14% |
| Armand | 5/10 | 5772 days | 11% |
| Ferth | 10/10 | 5772 days | 14% |
| J Kempeneers | 10/10 | 5772 days | 14% |
| Thea X | 5/10 | 5781 days | 11% |
| Keith Wilde | 10/10 | 5781 days | 14% |
| Dick Rosman | 9/10 | 5782 days | 14% |
| Terry Phillips | 5/10 | 5783 days | 11% |
| Jules | 8/10 | 5783 days | 14% |
| Carl Diehl | 9/10 | 5784 days | 14% |
| Paul Schoepfer | 9/10 | 5784 days | 14% |
| Uwe Rieper | 10/10 | 5785 days | 14% |
| Yvonne Ing | 10/10 | 5785 days | 14% |
| Diane Chapple | 9/10 | 5785 days | 14% |
| wannab | 9/10 | 5786 days | 14% |
| Kevin and Teresa | 9/10 | 5786 days | 14% |
| Christiane Lindenberg | 9/10 | 5795 days | 14% |
| Nigel Armstrong | 9/10 | 5797 days | 14% |
| Buss | 10/10 | 5799 days | 14% |
| John J | 9/10 | 5800 days | 14% |
| Heinrich Hax | 10/10 | 5806 days | 14% |
| marcusba | 8/10 | 5829 days | 14% |
| tanh | 9/10 | 5833 days | 14% |
| mariak | 7/10 | 5834 days | 13% |
| Silvana Thom | 10/10 | 5858 days | 14% |
| Wolfgang Dittrich | 10/10 | 5858 days | 14% |
| Chris Bulman | 10/10 | 5859 days | 14% |
| andyge | 8/10 | 5878 days | 14% |
| Ritag | 9/10 | 5964 days | 14% |
| regw | 10/10 | 5968 days | 14% |
| Cate | 9/10 | 6092 days | 14% |
| ginekek | 9/10 | 6092 days | 14% |
| geoffelizabeth | 9/10 | 6092 days | 14% |
| mikestep | 9/10 | 6092 days | 14% |
| EllenorO | 10/10 | 6093 days | 14% |
| Van Lent | 9/10 | 6094 days | 14% |
| Anna | 10/10 | 6094 days | 14% |
| Mike | 9/10 | 6097 days | 14% |
| Richard | 10/10 | 6102 days | 14% |
| Michael Walsall | 10/10 | 6102 days | 14% |
| AstridVG | 8/10 | 6109 days | 14% |
| Christine | 9/10 | 6109 days | 14% |
| Peter | 9/10 | 6109 days | 14% |
| DimitriD | 5/10 | 6109 days | 11% |
| Kitty | 9/10 | 6109 days | 14% |
| Max | 10/10 | 6112 days | 14% |
| Andy Baker | 9/10 | 6112 days | 14% |
| Francesca Sabat | 8/10 | 6114 days | 14% |
| Robert | 10/10 | 6123 days | 14% |
| Melissa Gillespie | 10/10 | 6123 days | 14% |
| Hetty | 9/10 | 6124 days | 14% |
| Charles | 7/10 | 6125 days | 13% |
| Byleveld | 8/10 | 6125 days | 14% |
| JoseB | 8/10 | 6126 days | 14% |
| MrHebbard | 10/10 | 6126 days | 14% |
| ChristineM | 10/10 | 6126 days | 14% |
| Elrik frau | 10/10 | 6126 days | 14% |
| Louise | 9/10 | 6133 days | 14% |
| Douglas | 9/10 | 6134 days | 14% |
| CSander | 9/10 | 6150 days | 14% |
| Patricia | 8/10 | 6160 days | 14% |
| Dijk | 8/10 | 6165 days | 14% |
| Josefine | 10/10 | 6165 days | 14% |
| Ducolq | 5/10 | 6165 days | 11% |
| Jacques | 8/10 | 6165 days | 14% |
| Carina | 8/10 | 6171 days | 14% |
| Michael | 9/10 | 6202 days | 14% |
| silvia | 8/10 | 6205 days | 14% |
| Anouk | 8/10 | 6205 days | 14% |
| Mat | 9/10 | 6209 days | 14% |
| Paul | 8/10 | 6256 days | 14% |
| Helga | 9/10 | 6267 days | 14% |
| Mikel | 9/10 | 6332 days | 14% |
| Christine | 6/10 | 6341 days | 12% |
| Jim Summers | 9/10 | 6341 days | 14% |
| Franz | 7/10 | 6463 days | 13% |
| Linda and Peter | 10/10 | 6471 days | 14% |
| Mike and Judy | 8/10 | 6472 days | 14% |
| Methers | 9/10 | 6472 days | 14% |
| Denise | 10/10 | 6475 days | 14% |
| Kavanagh | 8/10 | 6475 days | 14% |
| De Wijn | 8/10 | 6478 days | 14% |
| Lisa Jones | 9/10 | 6479 days | 14% |
| Christian | 9/10 | 6479 days | 14% |
| Soren Danning | 8/10 | 6479 days | 14% |
| Jones | 10/10 | 6483 days | 14% |
| Orla Hansen | 10/10 | 6484 days | 14% |
| Bauer | 10/10 | 6490 days | 14% |
| Aharon | 10/10 | 6490 days | 14% |
| D.A. Mulder | 9/10 | 6491 days | 14% |
| Jurg Meister | 8/10 | 6492 days | 14% |
| Sally and David Wallis | 10/10 | 6492 days | 14% |
| Knol | 9/10 | 6493 days | 14% |
| Sue Randall | 8/10 | 6496 days | 14% |
| Cole Penelope | 10/10 | 6496 days | 14% |
| Blenkoe | 6/10 | 6497 days | 12% |
| Erwin de Kleijn | 8/10 | 6497 days | 14% |
| Thomas | 9/10 | 6506 days | 14% |
| Bex | 10/10 | 6520 days | 14% |
| Van Hoof | 9/10 | 6532 days | 14% |
| Tim | 10/10 | 6532 days | 14% |
| Gabriel Faber | 9/10 | 6567 days | 14% |
| Jonkers | 9/10 | 6569 days | 14% |
| Edwin | 10/10 | 6573 days | 14% |
| Lyn Saxon | 10/10 | 6577 days | 14% |
| Wendy Williams | 10/10 | 6584 days | 14% |
| Hans Knappmann | 10/10 | 6694 days | 14% |
| Phillipa | 10/10 | 6802 days | 14% |
| Stefan&Gerte | 9/10 | 6816 days | 14% |
| Cat | 9/10 | 6822 days | 14% |
| TeamFlorida | 10/10 | 6829 days | 14% |
| Jo | 9/10 | 6829 days | 14% |
| Fenke | 9/10 | 6834 days | 14% |
| Bas | 9/10 | 6834 days | 14% |
| Martin Smith | 9/10 | 6839 days | 14% |
| John Beirne | 9/10 | 6846 days | 14% |
| Palle | 9/10 | 6851 days | 14% |
| Anna | 9/10 | 6851 days | 14% |
| Svenja | 10/10 | 6857 days | 14% |
| Shirely | 10/10 | 6857 days | 14% |
| Rogier | 8/10 | 6858 days | 14% |
| Wendy | 8/10 | 6862 days | 14% |
| Kerry | 10/10 | 6867 days | 14% |
| Henrich | 10/10 | 6867 days | 14% |
| Messing | 10/10 | 6870 days | 14% |
| Rolf Kruger | 10/10 | 6870 days | 14% |
| Ian | 8/10 | 6874 days | 14% |
| Peter | 9/10 | 6874 days | 14% |
| Brian | 10/10 | 6874 days | 14% |
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
-4.07% 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
1.70% 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.