Hi, 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 | 1657 days | 100% |
| Joanne&Ian | 10/10 | 1749 days | 81% |
| Geoff Steele | 8/10 | 3026 days | 39% |
| Axel and Patricia G | 6/10 | 3214 days | 30% |
| Leonie Westerhot | 8/10 | 3286 days | 32% |
| Ivanova R | 9/10 | 3543 days | 24% |
| Lorenz Pfisterer | 10/10 | 3555 days | 24% |
| Heidi et Mat | 8/10 | 3564 days | 24% |
| Anke Vater | 10/10 | 3565 days | 24% |
| Anouk Jongsma | 9/10 | 3573 days | 24% |
| Robin WUERFEL | 9/10 | 3645 days | 21% |
| Helen Parsons | 10/10 | 3965 days | 12% |
| Peter Beeloo | 9/10 | 3969 days | 12% |
| Laurent Arditi | 9/10 | 4153 days | 7% |
| Sheila Galpin | 9/10 | 4304 days | 2% |
| Simon Galpin | 9/10 | 4304 days | 2% |
| Douglas Dean | 10/10 | 4306 days | 2% |
| Stina Hultberg | 4/10 | 4310 days | 1% |
| Alexander Zimmer | 7/10 | 4311 days | 2% |
| Linus Larsson | 3/10 | 4312 days | 1% |
| Leon Courtney | 10/10 | 4313 days | 2% |
| Libby | 10/10 | 4327 days | 1% |
| Colin Billington | 7/10 | 4328 days | 1% |
| Don Wallis | 10/10 | 4331 days | 1% |
| Bill | 7/10 | 4332 days | 1% |
| Saskia | 5/10 | 4332 days | 1% |
| Terry Seaman | 8/10 | 4334 days | 1% |
| S B | 10/10 | 4347 days | 1% |
| M K | 10/10 | 4347 days | 1% |
| Alacchi Moustier | 10/10 | 4347 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4355 days | 1% |
| Stuart Wilson | 8/10 | 4361 days | 0% |
| Fabian Lee | 5/10 | 4364 days | 0% |
| paul beacock | 10/10 | 4365 days | 0% |
| Gal Bero | 10/10 | 4368 days | 0% |
| Elly Zimmer | 6/10 | 4372 days | 0% |
| Bjorn Van Mulders | 10/10 | 4375 days | 0% |
| Kim Maertens | 9/10 | 4375 days | 0% |
| Steve Warren | 10/10 | 4487 days | 15% |
| hendrik king | 7/10 | 4579 days | 14% |
| Peter Jolliffe | 10/10 | 4671 days | 15% |
| Helen Dean | 10/10 | 4671 days | 15% |
| Dave Mertzig | 10/10 | 4671 days | 15% |
| Kathryn Pisco | 9/10 | 4677 days | 15% |
| Mike Pisco | 9/10 | 4677 days | 15% |
| Sebastian and Peter Beate | 10/10 | 4694 days | 15% |
| Fraser Goldsmith | 8/10 | 4695 days | 15% |
| Bucher | 9/10 | 4746 days | 15% |
| Marieke | 8/10 | 4747 days | 15% |
| Chew (Peter) | 7/10 | 4752 days | 14% |
| Natalie Nubler | 6/10 | 4753 days | 13% |
| Frans Derks | 9/10 | 4754 days | 15% |
| Meryem Buchwitz | 9/10 | 4774 days | 15% |
| roos wubben | 9/10 | 4777 days | 15% |
| Dagette | 9/10 | 4822 days | 15% |
| Teri C | 10/10 | 4852 days | 15% |
| Rob Klauer | 5/10 | 5024 days | 11% |
| Oliver Hardt | 9/10 | 5025 days | 15% |
| Val Phillips | 8/10 | 5029 days | 15% |
| Peter Adams | 9/10 | 5030 days | 15% |
| Harry Ruys | 8/10 | 5032 days | 15% |
| John McAllister | 9/10 | 5033 days | 15% |
| Keith Helen | 10/10 | 5036 days | 15% |
| Daniel Patricia | 9/10 | 5039 days | 15% |
| Laura Diepeveen | 8/10 | 5041 days | 15% |
| Fries | 10/10 | 5045 days | 15% |
| Karin Laurev | 10/10 | 5045 days | 15% |
| Gillian Rowe | 9/10 | 5046 days | 15% |
| Nigel Horrocks | 7/10 | 5046 days | 14% |
| Dieter Mangold | 10/10 | 5048 days | 15% |
| Lyn Deavin | 8/10 | 5048 days | 15% |
| Sabine & Stefan | 10/10 | 5049 days | 15% |
| Randewyk | 8/10 | 5049 days | 15% |
| Koster | 6/10 | 5051 days | 13% |
| Peter Aertssen | 7/10 | 5051 days | 14% |
| John A Jerome | 8/10 | 5051 days | 15% |
| Lynn Robinson | 10/10 | 5057 days | 15% |
| Heike | 9/10 | 5060 days | 15% |
| Robert MacLeod-Smith | 8/10 | 5061 days | 15% |
| Carel | 8/10 | 5062 days | 15% |
| Anna | 9/10 | 5063 days | 15% |
| Barrie Corless | 9/10 | 5064 days | 15% |
| Urban Reifler | 10/10 | 5076 days | 15% |
| Lyn Stainton | 10/10 | 5139 days | 15% |
| John & Vicki | 8/10 | 5143 days | 15% |
| jenckes | 9/10 | 5218 days | 15% |
| Debbie Smithers | 10/10 | 5360 days | 15% |
| Julie and Russ Charles | 10/10 | 5384 days | 15% |
| Kevin Wong | 10/10 | 5384 days | 15% |
| Rocipon | 8/10 | 5385 days | 15% |
| Margit and Corein Groenevelt | 7/10 | 5388 days | 14% |
| Richard Dudfield | 10/10 | 5388 days | 15% |
| John Duffy | 10/10 | 5388 days | 15% |
| Richard Gallichan | 9/10 | 5389 days | 15% |
| Jean Barker | 8/10 | 5389 days | 15% |
| Bette Eh | 10/10 | 5391 days | 15% |
| bryfrance | 10/10 | 5392 days | 15% |
| Juliane Kleiu | 10/10 | 5392 days | 15% |
| Claudia | 8/10 | 5392 days | 15% |
| E Brockbank | 9/10 | 5393 days | 15% |
| David Mellard | 10/10 | 5394 days | 15% |
| Bruce & Elaine Chote | 10/10 | 5394 days | 15% |
| Roland Berger | 7/10 | 5395 days | 14% |
| Ross | 9/10 | 5395 days | 15% |
| Gerstmann | 9/10 | 5396 days | 15% |
| Ekhard Wittkugel | 10/10 | 5398 days | 15% |
| Stephen Shearer | 10/10 | 5399 days | 15% |
| Monika | 10/10 | 5400 days | 15% |
| Betten | 9/10 | 5401 days | 15% |
| Stephen Jones | 9/10 | 5402 days | 15% |
| Mike and Diane Baker | 10/10 | 5403 days | 15% |
| Lenore Dejong | 10/10 | 5404 days | 15% |
| Andreas Fritesche | 8/10 | 5405 days | 15% |
| Matthys Kikke | 9/10 | 5406 days | 15% |
| Bucher Weruer | 10/10 | 5406 days | 15% |
| Camilla Andersson | 7/10 | 5407 days | 14% |
| Bob Adams | 10/10 | 5414 days | 15% |
| John | 8/10 | 5414 days | 15% |
| Katie Nicol | 10/10 | 5415 days | 15% |
| Martin Current | 9/10 | 5417 days | 15% |
| Teum and Orselien | 8/10 | 5418 days | 15% |
| Vanderhorst | 8/10 | 5418 days | 15% |
| John Price | 9/10 | 5420 days | 15% |
| Doris Schollenberger | 10/10 | 5420 days | 15% |
| Phil Hunter | 9/10 | 5421 days | 15% |
| Chris | 8/10 | 5422 days | 15% |
| Gordon Daniels | 8/10 | 5425 days | 15% |
| Hull | 9/10 | 5425 days | 15% |
| Lizzie | 10/10 | 5492 days | 15% |
| allesca | 10/10 | 5522 days | 15% |
| M Schram | 8/10 | 5685 days | 15% |
| Versteeg | 9/10 | 5688 days | 15% |
| Lomas | 10/10 | 5697 days | 15% |
| Maureen | 10/10 | 5701 days | 15% |
| Amy | 9/10 | 5706 days | 15% |
| Don & Geraldine | 10/10 | 5742 days | 15% |
| Hans and Astrid | 10/10 | 5744 days | 15% |
| Agnes | 10/10 | 5746 days | 15% |
| maggie Webster | 10/10 | 5753 days | 15% |
| Keita-Karen Buchanan | 10/10 | 5753 days | 15% |
| Lars Taarnhoej | 7/10 | 5753 days | 14% |
| markus Brandenberger | 10/10 | 5754 days | 15% |
| Jvjm Family | 9/10 | 5755 days | 15% |
| David B | 7/10 | 5762 days | 14% |
| Margaret O'Sullivan | 8/10 | 5762 days | 15% |
| Chris el capitan | 9/10 | 5772 days | 15% |
| John Cox | 9/10 | 5773 days | 15% |
| Muller Weissert | 8/10 | 5774 days | 15% |
| Brian Morris | 9/10 | 5776 days | 15% |
| Jobbs | 10/10 | 5776 days | 15% |
| Maria Newton | 9/10 | 5777 days | 15% |
| Dieter Groscurth | 8/10 | 5777 days | 15% |
| Gordon and Joyce | 9/10 | 5777 days | 15% |
| Remko Ebbens | 9/10 | 5780 days | 15% |
| Thijs Schoemaker | 8/10 | 5781 days | 15% |
| Armand | 5/10 | 5781 days | 11% |
| Ferth | 10/10 | 5781 days | 15% |
| J Kempeneers | 10/10 | 5781 days | 15% |
| Thea X | 5/10 | 5790 days | 11% |
| Keith Wilde | 10/10 | 5790 days | 15% |
| Dick Rosman | 9/10 | 5791 days | 15% |
| Terry Phillips | 5/10 | 5792 days | 11% |
| Jules | 8/10 | 5792 days | 15% |
| Carl Diehl | 9/10 | 5793 days | 15% |
| Paul Schoepfer | 9/10 | 5793 days | 15% |
| Uwe Rieper | 10/10 | 5794 days | 15% |
| Yvonne Ing | 10/10 | 5794 days | 15% |
| Diane Chapple | 9/10 | 5794 days | 15% |
| wannab | 9/10 | 5795 days | 15% |
| Kevin and Teresa | 9/10 | 5795 days | 15% |
| Christiane Lindenberg | 9/10 | 5804 days | 15% |
| Nigel Armstrong | 9/10 | 5806 days | 15% |
| Buss | 10/10 | 5808 days | 15% |
| John J | 9/10 | 5809 days | 15% |
| Heinrich Hax | 10/10 | 5815 days | 15% |
| marcusba | 8/10 | 5838 days | 15% |
| tanh | 9/10 | 5842 days | 15% |
| mariak | 7/10 | 5843 days | 14% |
| Silvana Thom | 10/10 | 5867 days | 15% |
| Wolfgang Dittrich | 10/10 | 5867 days | 15% |
| Chris Bulman | 10/10 | 5868 days | 15% |
| andyge | 8/10 | 5887 days | 15% |
| Ritag | 9/10 | 5973 days | 15% |
| regw | 10/10 | 5977 days | 15% |
| Cate | 9/10 | 6101 days | 15% |
| ginekek | 9/10 | 6101 days | 15% |
| geoffelizabeth | 9/10 | 6101 days | 15% |
| mikestep | 9/10 | 6101 days | 15% |
| EllenorO | 10/10 | 6102 days | 15% |
| Van Lent | 9/10 | 6103 days | 15% |
| Anna | 10/10 | 6103 days | 15% |
| Mike | 9/10 | 6105 days | 15% |
| Richard | 10/10 | 6111 days | 15% |
| Michael Walsall | 10/10 | 6111 days | 15% |
| AstridVG | 8/10 | 6118 days | 15% |
| Christine | 9/10 | 6118 days | 15% |
| Peter | 9/10 | 6118 days | 15% |
| DimitriD | 5/10 | 6118 days | 11% |
| Kitty | 9/10 | 6118 days | 15% |
| Max | 10/10 | 6120 days | 15% |
| Andy Baker | 9/10 | 6121 days | 15% |
| Francesca Sabat | 8/10 | 6123 days | 15% |
| Robert | 10/10 | 6132 days | 15% |
| Melissa Gillespie | 10/10 | 6132 days | 15% |
| Hetty | 9/10 | 6133 days | 15% |
| Charles | 7/10 | 6134 days | 14% |
| Byleveld | 8/10 | 6134 days | 15% |
| JoseB | 8/10 | 6135 days | 15% |
| MrHebbard | 10/10 | 6135 days | 15% |
| ChristineM | 10/10 | 6135 days | 15% |
| Elrik frau | 10/10 | 6135 days | 15% |
| Louise | 9/10 | 6142 days | 15% |
| Douglas | 9/10 | 6143 days | 15% |
| CSander | 9/10 | 6159 days | 15% |
| Patricia | 8/10 | 6169 days | 15% |
| Dijk | 8/10 | 6173 days | 15% |
| Josefine | 10/10 | 6173 days | 15% |
| Ducolq | 5/10 | 6173 days | 11% |
| Jacques | 8/10 | 6174 days | 15% |
| Carina | 8/10 | 6180 days | 15% |
| Michael | 9/10 | 6211 days | 15% |
| silvia | 8/10 | 6214 days | 15% |
| Anouk | 8/10 | 6214 days | 15% |
| Mat | 9/10 | 6218 days | 15% |
| Paul | 8/10 | 6265 days | 15% |
| Helga | 9/10 | 6276 days | 15% |
| Mikel | 9/10 | 6341 days | 15% |
| Christine | 6/10 | 6350 days | 13% |
| Jim Summers | 9/10 | 6350 days | 15% |
| Franz | 7/10 | 6472 days | 14% |
| Linda and Peter | 10/10 | 6480 days | 15% |
| Mike and Judy | 8/10 | 6481 days | 15% |
| Methers | 9/10 | 6481 days | 15% |
| Denise | 10/10 | 6484 days | 15% |
| Kavanagh | 8/10 | 6484 days | 15% |
| De Wijn | 8/10 | 6487 days | 15% |
| Lisa Jones | 9/10 | 6488 days | 15% |
| Christian | 9/10 | 6488 days | 15% |
| Soren Danning | 8/10 | 6488 days | 15% |
| Jones | 10/10 | 6492 days | 15% |
| Orla Hansen | 10/10 | 6493 days | 15% |
| Bauer | 10/10 | 6499 days | 15% |
| Aharon | 10/10 | 6499 days | 15% |
| D.A. Mulder | 9/10 | 6500 days | 15% |
| Jurg Meister | 8/10 | 6501 days | 15% |
| Sally and David Wallis | 10/10 | 6501 days | 15% |
| Knol | 9/10 | 6502 days | 15% |
| Sue Randall | 8/10 | 6505 days | 15% |
| Cole Penelope | 10/10 | 6505 days | 15% |
| Blenkoe | 6/10 | 6506 days | 13% |
| Erwin de Kleijn | 8/10 | 6506 days | 15% |
| Thomas | 9/10 | 6515 days | 15% |
| Bex | 10/10 | 6528 days | 15% |
| Van Hoof | 9/10 | 6541 days | 15% |
| Tim | 10/10 | 6541 days | 15% |
| Gabriel Faber | 9/10 | 6576 days | 15% |
| Jonkers | 9/10 | 6578 days | 15% |
| Edwin | 10/10 | 6582 days | 15% |
| Lyn Saxon | 10/10 | 6586 days | 15% |
| Wendy Williams | 10/10 | 6593 days | 15% |
| Hans Knappmann | 10/10 | 6703 days | 15% |
| Phillipa | 10/10 | 6811 days | 15% |
| Stefan&Gerte | 9/10 | 6825 days | 15% |
| Cat | 9/10 | 6831 days | 15% |
| TeamFlorida | 10/10 | 6838 days | 15% |
| Jo | 9/10 | 6838 days | 15% |
| Fenke | 9/10 | 6843 days | 15% |
| Bas | 9/10 | 6843 days | 15% |
| Martin Smith | 9/10 | 6848 days | 15% |
| John Beirne | 9/10 | 6855 days | 15% |
| Palle | 9/10 | 6860 days | 15% |
| Anna | 9/10 | 6860 days | 15% |
| Svenja | 10/10 | 6866 days | 15% |
| Shirely | 10/10 | 6866 days | 15% |
| Rogier | 8/10 | 6867 days | 15% |
| Wendy | 8/10 | 6871 days | 15% |
| Kerry | 10/10 | 6876 days | 15% |
| Henrich | 10/10 | 6876 days | 15% |
| Messing | 10/10 | 6879 days | 15% |
| Rolf Kruger | 10/10 | 6879 days | 15% |
| Ian | 8/10 | 6883 days | 15% |
| Peter | 9/10 | 6883 days | 15% |
| Brian | 10/10 | 6883 days | 15% |
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
-4.06% 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 | -4.00% |
| 198 | -4.02% |
| 199 | -4.04% |
| 200 | -4.06% |
| 201 | -4.08% |
| 202 | -4.10% |
| 203 | -4.12% |
| … | … |
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.