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
90.53%
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 | 1204 days | 100% |
| Joanne&Ian | 10/10 | 1296 days | 78% |
| Geoff Steele | 8/10 | 2572 days | 13% |
| Axel and Patricia G | 6/10 | 2761 days | 10% |
| Leonie Westerhot | 8/10 | 2833 days | 11% |
| Ivanova R | 9/10 | 3090 days | 9% |
| Lorenz Pfisterer | 10/10 | 3102 days | 9% |
| Heidi et Mat | 8/10 | 3111 days | 9% |
| Anke Vater | 10/10 | 3112 days | 9% |
| Anouk Jongsma | 9/10 | 3120 days | 9% |
| Robin WUERFEL | 9/10 | 3192 days | 8% |
| Helen Parsons | 10/10 | 3512 days | 6% |
| Peter Beeloo | 9/10 | 3515 days | 6% |
| Laurent Arditi | 9/10 | 3700 days | 5% |
| Sheila Galpin | 9/10 | 3851 days | 4% |
| Simon Galpin | 9/10 | 3851 days | 4% |
| Douglas Dean | 10/10 | 3853 days | 4% |
| Stina Hultberg | 4/10 | 3857 days | 2% |
| Alexander Zimmer | 7/10 | 3858 days | 3% |
| Linus Larsson | 3/10 | 3859 days | 2% |
| Leon Courtney | 10/10 | 3860 days | 4% |
| Libby | 10/10 | 3874 days | 4% |
| Colin Billington | 7/10 | 3875 days | 3% |
| Don Wallis | 10/10 | 3878 days | 4% |
| Bill | 7/10 | 3879 days | 3% |
| Saskia | 5/10 | 3879 days | 3% |
| Terry Seaman | 8/10 | 3881 days | 3% |
| S B | 10/10 | 3894 days | 3% |
| M K | 10/10 | 3894 days | 3% |
| Alacchi Moustier | 10/10 | 3894 days | 3% |
| Maya Bakker-deDreu | 8/10 | 3902 days | 3% |
| Stuart Wilson | 8/10 | 3908 days | 3% |
| Fabian Lee | 5/10 | 3911 days | 3% |
| paul beacock | 10/10 | 3912 days | 3% |
| Gal Bero | 10/10 | 3915 days | 3% |
| Elly Zimmer | 6/10 | 3919 days | 3% |
| Bjorn Van Mulders | 10/10 | 3922 days | 3% |
| Kim Maertens | 9/10 | 3922 days | 3% |
| Steve Warren | 10/10 | 4034 days | 2% |
| hendrik king | 7/10 | 4126 days | 2% |
| Peter Jolliffe | 10/10 | 4218 days | 1% |
| Helen Dean | 10/10 | 4218 days | 1% |
| Dave Mertzig | 10/10 | 4218 days | 1% |
| Kathryn Pisco | 9/10 | 4224 days | 1% |
| Mike Pisco | 9/10 | 4224 days | 1% |
| Sebastian and Peter Beate | 10/10 | 4241 days | 1% |
| Fraser Goldsmith | 8/10 | 4242 days | 1% |
| Bucher | 9/10 | 4293 days | 1% |
| Marieke | 8/10 | 4294 days | 1% |
| Chew (Peter) | 7/10 | 4299 days | 0% |
| Natalie Nubler | 6/10 | 4300 days | 0% |
| Frans Derks | 9/10 | 4301 days | 0% |
| Meryem Buchwitz | 9/10 | 4321 days | 0% |
| roos wubben | 9/10 | 4324 days | 0% |
| Dagette | 9/10 | 4369 days | 0% |
| Teri C | 10/10 | 4399 days | 4% |
| Rob Klauer | 5/10 | 4571 days | 3% |
| Oliver Hardt | 9/10 | 4572 days | 4% |
| Val Phillips | 8/10 | 4576 days | 4% |
| Peter Adams | 9/10 | 4577 days | 4% |
| Harry Ruys | 8/10 | 4579 days | 4% |
| John McAllister | 9/10 | 4580 days | 4% |
| Keith Helen | 10/10 | 4583 days | 4% |
| Daniel Patricia | 9/10 | 4586 days | 4% |
| Laura Diepeveen | 8/10 | 4588 days | 4% |
| Fries | 10/10 | 4592 days | 4% |
| Karin Laurev | 10/10 | 4592 days | 4% |
| Gillian Rowe | 9/10 | 4593 days | 4% |
| Nigel Horrocks | 7/10 | 4593 days | 3% |
| Dieter Mangold | 10/10 | 4595 days | 4% |
| Lyn Deavin | 8/10 | 4595 days | 4% |
| Sabine & Stefan | 10/10 | 4596 days | 4% |
| Randewyk | 8/10 | 4596 days | 4% |
| Koster | 6/10 | 4598 days | 3% |
| Peter Aertssen | 7/10 | 4598 days | 3% |
| John A Jerome | 8/10 | 4598 days | 4% |
| Lynn Robinson | 10/10 | 4604 days | 4% |
| Heike | 9/10 | 4607 days | 4% |
| Robert MacLeod-Smith | 8/10 | 4608 days | 4% |
| Carel | 8/10 | 4609 days | 4% |
| Anna | 9/10 | 4610 days | 4% |
| Barrie Corless | 9/10 | 4611 days | 4% |
| Urban Reifler | 10/10 | 4623 days | 4% |
| Lyn Stainton | 10/10 | 4686 days | 4% |
| John & Vicki | 8/10 | 4690 days | 4% |
| jenckes | 9/10 | 4765 days | 4% |
| Debbie Smithers | 10/10 | 4907 days | 4% |
| Julie and Russ Charles | 10/10 | 4931 days | 4% |
| Kevin Wong | 10/10 | 4931 days | 4% |
| Rocipon | 8/10 | 4932 days | 4% |
| Margit and Corein Groenevelt | 7/10 | 4935 days | 3% |
| Richard Dudfield | 10/10 | 4935 days | 4% |
| John Duffy | 10/10 | 4935 days | 4% |
| Richard Gallichan | 9/10 | 4936 days | 4% |
| Jean Barker | 8/10 | 4936 days | 4% |
| Bette Eh | 10/10 | 4938 days | 4% |
| bryfrance | 10/10 | 4939 days | 4% |
| Juliane Kleiu | 10/10 | 4939 days | 4% |
| Claudia | 8/10 | 4939 days | 4% |
| E Brockbank | 9/10 | 4940 days | 4% |
| David Mellard | 10/10 | 4941 days | 4% |
| Bruce & Elaine Chote | 10/10 | 4941 days | 4% |
| Roland Berger | 7/10 | 4942 days | 3% |
| Ross | 9/10 | 4942 days | 4% |
| Gerstmann | 9/10 | 4943 days | 4% |
| Ekhard Wittkugel | 10/10 | 4945 days | 4% |
| Stephen Shearer | 10/10 | 4946 days | 4% |
| Monika | 10/10 | 4947 days | 4% |
| Betten | 9/10 | 4948 days | 4% |
| Stephen Jones | 9/10 | 4949 days | 4% |
| Mike and Diane Baker | 10/10 | 4950 days | 4% |
| Lenore Dejong | 10/10 | 4951 days | 4% |
| Andreas Fritesche | 8/10 | 4952 days | 4% |
| Matthys Kikke | 9/10 | 4953 days | 4% |
| Bucher Weruer | 10/10 | 4953 days | 4% |
| Camilla Andersson | 7/10 | 4954 days | 3% |
| Bob Adams | 10/10 | 4961 days | 4% |
| John | 8/10 | 4961 days | 4% |
| Katie Nicol | 10/10 | 4962 days | 4% |
| Martin Current | 9/10 | 4964 days | 4% |
| Teum and Orselien | 8/10 | 4965 days | 4% |
| Vanderhorst | 8/10 | 4965 days | 4% |
| John Price | 9/10 | 4967 days | 4% |
| Doris Schollenberger | 10/10 | 4967 days | 4% |
| Phil Hunter | 9/10 | 4968 days | 4% |
| Chris | 8/10 | 4969 days | 4% |
| Gordon Daniels | 8/10 | 4972 days | 4% |
| Hull | 9/10 | 4972 days | 4% |
| Lizzie | 10/10 | 5039 days | 4% |
| allesca | 10/10 | 5069 days | 4% |
| M Schram | 8/10 | 5232 days | 4% |
| Versteeg | 9/10 | 5235 days | 4% |
| Lomas | 10/10 | 5244 days | 4% |
| Maureen | 10/10 | 5248 days | 4% |
| Amy | 9/10 | 5253 days | 4% |
| Don & Geraldine | 10/10 | 5289 days | 4% |
| Hans and Astrid | 10/10 | 5291 days | 4% |
| Agnes | 10/10 | 5293 days | 4% |
| maggie Webster | 10/10 | 5300 days | 4% |
| Keita-Karen Buchanan | 10/10 | 5300 days | 4% |
| Lars Taarnhoej | 7/10 | 5300 days | 3% |
| markus Brandenberger | 10/10 | 5301 days | 4% |
| Jvjm Family | 9/10 | 5302 days | 4% |
| David B | 7/10 | 5309 days | 3% |
| Margaret O'Sullivan | 8/10 | 5309 days | 4% |
| Chris el capitan | 9/10 | 5319 days | 4% |
| John Cox | 9/10 | 5320 days | 4% |
| Muller Weissert | 8/10 | 5321 days | 4% |
| Brian Morris | 9/10 | 5323 days | 4% |
| Jobbs | 10/10 | 5323 days | 4% |
| Maria Newton | 9/10 | 5324 days | 4% |
| Dieter Groscurth | 8/10 | 5324 days | 4% |
| Gordon and Joyce | 9/10 | 5324 days | 4% |
| Remko Ebbens | 9/10 | 5327 days | 4% |
| Thijs Schoemaker | 8/10 | 5328 days | 4% |
| Armand | 5/10 | 5328 days | 3% |
| Ferth | 10/10 | 5328 days | 4% |
| J Kempeneers | 10/10 | 5328 days | 4% |
| Thea X | 5/10 | 5337 days | 3% |
| Keith Wilde | 10/10 | 5337 days | 4% |
| Dick Rosman | 9/10 | 5338 days | 4% |
| Terry Phillips | 5/10 | 5339 days | 3% |
| Jules | 8/10 | 5339 days | 4% |
| Carl Diehl | 9/10 | 5340 days | 4% |
| Paul Schoepfer | 9/10 | 5340 days | 4% |
| Uwe Rieper | 10/10 | 5341 days | 4% |
| Yvonne Ing | 10/10 | 5341 days | 4% |
| Diane Chapple | 9/10 | 5341 days | 4% |
| wannab | 9/10 | 5342 days | 4% |
| Kevin and Teresa | 9/10 | 5342 days | 4% |
| Christiane Lindenberg | 9/10 | 5351 days | 4% |
| Nigel Armstrong | 9/10 | 5353 days | 4% |
| Buss | 10/10 | 5355 days | 4% |
| John J | 9/10 | 5356 days | 4% |
| Heinrich Hax | 10/10 | 5362 days | 4% |
| marcusba | 8/10 | 5385 days | 4% |
| tanh | 9/10 | 5389 days | 4% |
| mariak | 7/10 | 5390 days | 3% |
| Silvana Thom | 10/10 | 5414 days | 4% |
| Wolfgang Dittrich | 10/10 | 5414 days | 4% |
| Chris Bulman | 10/10 | 5415 days | 4% |
| andyge | 8/10 | 5434 days | 4% |
| Ritag | 9/10 | 5520 days | 4% |
| regw | 10/10 | 5524 days | 4% |
| Cate | 9/10 | 5647 days | 4% |
| ginekek | 9/10 | 5648 days | 4% |
| geoffelizabeth | 9/10 | 5648 days | 4% |
| mikestep | 9/10 | 5648 days | 4% |
| EllenorO | 10/10 | 5648 days | 4% |
| Van Lent | 9/10 | 5649 days | 4% |
| Anna | 10/10 | 5650 days | 4% |
| Mike | 9/10 | 5652 days | 4% |
| Richard | 10/10 | 5657 days | 4% |
| Michael Walsall | 10/10 | 5658 days | 4% |
| AstridVG | 8/10 | 5664 days | 4% |
| Christine | 9/10 | 5664 days | 4% |
| Peter | 9/10 | 5664 days | 4% |
| DimitriD | 5/10 | 5665 days | 3% |
| Kitty | 9/10 | 5665 days | 4% |
| Max | 10/10 | 5667 days | 4% |
| Andy Baker | 9/10 | 5668 days | 4% |
| Francesca Sabat | 8/10 | 5670 days | 4% |
| Robert | 10/10 | 5678 days | 4% |
| Melissa Gillespie | 10/10 | 5679 days | 4% |
| Hetty | 9/10 | 5679 days | 4% |
| Charles | 7/10 | 5680 days | 3% |
| Byleveld | 8/10 | 5681 days | 4% |
| JoseB | 8/10 | 5682 days | 4% |
| MrHebbard | 10/10 | 5682 days | 4% |
| ChristineM | 10/10 | 5682 days | 4% |
| Elrik frau | 10/10 | 5682 days | 4% |
| Louise | 9/10 | 5688 days | 4% |
| Douglas | 9/10 | 5689 days | 4% |
| CSander | 9/10 | 5706 days | 4% |
| Patricia | 8/10 | 5716 days | 4% |
| Dijk | 8/10 | 5720 days | 4% |
| Josefine | 10/10 | 5720 days | 4% |
| Ducolq | 5/10 | 5720 days | 3% |
| Jacques | 8/10 | 5721 days | 4% |
| Carina | 8/10 | 5726 days | 4% |
| Michael | 9/10 | 5758 days | 4% |
| silvia | 8/10 | 5760 days | 4% |
| Anouk | 8/10 | 5760 days | 4% |
| Mat | 9/10 | 5765 days | 4% |
| Paul | 8/10 | 5812 days | 4% |
| Helga | 9/10 | 5822 days | 4% |
| Mikel | 9/10 | 5887 days | 4% |
| Christine | 6/10 | 5896 days | 3% |
| Jim Summers | 9/10 | 5896 days | 4% |
| Franz | 7/10 | 6019 days | 3% |
| Linda and Peter | 10/10 | 6027 days | 4% |
| Mike and Judy | 8/10 | 6028 days | 4% |
| Methers | 9/10 | 6028 days | 4% |
| Denise | 10/10 | 6031 days | 4% |
| Kavanagh | 8/10 | 6031 days | 4% |
| De Wijn | 8/10 | 6034 days | 4% |
| Lisa Jones | 9/10 | 6035 days | 4% |
| Christian | 9/10 | 6035 days | 4% |
| Soren Danning | 8/10 | 6035 days | 4% |
| Jones | 10/10 | 6039 days | 4% |
| Orla Hansen | 10/10 | 6040 days | 4% |
| Bauer | 10/10 | 6046 days | 4% |
| Aharon | 10/10 | 6046 days | 4% |
| D.A. Mulder | 9/10 | 6047 days | 4% |
| Jurg Meister | 8/10 | 6048 days | 4% |
| Sally and David Wallis | 10/10 | 6048 days | 4% |
| Knol | 9/10 | 6049 days | 4% |
| Sue Randall | 8/10 | 6052 days | 4% |
| Cole Penelope | 10/10 | 6052 days | 4% |
| Blenkoe | 6/10 | 6053 days | 3% |
| Erwin de Kleijn | 8/10 | 6053 days | 4% |
| Thomas | 9/10 | 6062 days | 4% |
| Bex | 10/10 | 6075 days | 4% |
| Van Hoof | 9/10 | 6088 days | 4% |
| Tim | 10/10 | 6088 days | 4% |
| Gabriel Faber | 9/10 | 6123 days | 4% |
| Jonkers | 9/10 | 6125 days | 4% |
| Edwin | 10/10 | 6129 days | 4% |
| Lyn Saxon | 10/10 | 6133 days | 4% |
| Wendy Williams | 10/10 | 6140 days | 4% |
| Hans Knappmann | 10/10 | 6250 days | 4% |
| Phillipa | 10/10 | 6358 days | 4% |
| Stefan&Gerte | 9/10 | 6372 days | 4% |
| Cat | 9/10 | 6378 days | 4% |
| TeamFlorida | 10/10 | 6385 days | 4% |
| Jo | 9/10 | 6385 days | 4% |
| Fenke | 9/10 | 6390 days | 4% |
| Bas | 9/10 | 6390 days | 4% |
| Martin Smith | 9/10 | 6395 days | 4% |
| John Beirne | 9/10 | 6402 days | 4% |
| Palle | 9/10 | 6407 days | 4% |
| Anna | 9/10 | 6407 days | 4% |
| Svenja | 10/10 | 6413 days | 4% |
| Shirely | 10/10 | 6413 days | 4% |
| Rogier | 8/10 | 6414 days | 4% |
| Wendy | 8/10 | 6418 days | 4% |
| Kerry | 10/10 | 6423 days | 4% |
| Henrich | 10/10 | 6423 days | 4% |
| Messing | 10/10 | 6426 days | 4% |
| Rolf Kruger | 10/10 | 6426 days | 4% |
| Ian | 8/10 | 6430 days | 4% |
| Peter | 9/10 | 6430 days | 4% |
| Brian | 10/10 | 6430 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
-2.98% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 76 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 | -2.94% |
| 198 | -2.95% |
| 199 | -2.97% |
| 200 | -2.98% |
| 201 | -3.00% |
| 202 | -3.01% |
| 203 | -3.03% |
| … | … |
Balancing Adjustment
1.37% 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.