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 | 1658 days | 100% |
| Joanne&Ian | 10/10 | 1750 days | 81% |
| Geoff Steele | 8/10 | 3027 days | 39% |
| Axel and Patricia G | 6/10 | 3215 days | 30% |
| Leonie Westerhot | 8/10 | 3287 days | 32% |
| Ivanova R | 9/10 | 3544 days | 24% |
| Lorenz Pfisterer | 10/10 | 3556 days | 24% |
| Heidi et Mat | 8/10 | 3565 days | 24% |
| Anke Vater | 10/10 | 3566 days | 24% |
| Anouk Jongsma | 9/10 | 3574 days | 24% |
| Robin WUERFEL | 9/10 | 3646 days | 21% |
| Helen Parsons | 10/10 | 3966 days | 12% |
| Peter Beeloo | 9/10 | 3970 days | 12% |
| Laurent Arditi | 9/10 | 4154 days | 7% |
| Sheila Galpin | 9/10 | 4305 days | 2% |
| Simon Galpin | 9/10 | 4305 days | 2% |
| Douglas Dean | 10/10 | 4307 days | 2% |
| Stina Hultberg | 4/10 | 4311 days | 1% |
| Alexander Zimmer | 7/10 | 4312 days | 2% |
| Linus Larsson | 3/10 | 4313 days | 1% |
| Leon Courtney | 10/10 | 4314 days | 2% |
| Libby | 10/10 | 4328 days | 1% |
| Colin Billington | 7/10 | 4329 days | 1% |
| Don Wallis | 10/10 | 4332 days | 1% |
| Bill | 7/10 | 4333 days | 1% |
| Saskia | 5/10 | 4333 days | 1% |
| Terry Seaman | 8/10 | 4335 days | 1% |
| S B | 10/10 | 4348 days | 1% |
| M K | 10/10 | 4348 days | 1% |
| Alacchi Moustier | 10/10 | 4348 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4356 days | 1% |
| Stuart Wilson | 8/10 | 4362 days | 0% |
| Fabian Lee | 5/10 | 4365 days | 0% |
| paul beacock | 10/10 | 4366 days | 0% |
| Gal Bero | 10/10 | 4369 days | 0% |
| Elly Zimmer | 6/10 | 4373 days | 0% |
| Bjorn Van Mulders | 10/10 | 4376 days | 0% |
| Kim Maertens | 9/10 | 4376 days | 0% |
| Steve Warren | 10/10 | 4488 days | 15% |
| hendrik king | 7/10 | 4580 days | 14% |
| Peter Jolliffe | 10/10 | 4672 days | 15% |
| Helen Dean | 10/10 | 4672 days | 15% |
| Dave Mertzig | 10/10 | 4672 days | 15% |
| Kathryn Pisco | 9/10 | 4678 days | 15% |
| Mike Pisco | 9/10 | 4678 days | 15% |
| Sebastian and Peter Beate | 10/10 | 4695 days | 15% |
| Fraser Goldsmith | 8/10 | 4696 days | 15% |
| Bucher | 9/10 | 4747 days | 15% |
| Marieke | 8/10 | 4748 days | 15% |
| Chew (Peter) | 7/10 | 4753 days | 14% |
| Natalie Nubler | 6/10 | 4754 days | 13% |
| Frans Derks | 9/10 | 4755 days | 15% |
| Meryem Buchwitz | 9/10 | 4775 days | 15% |
| roos wubben | 9/10 | 4778 days | 15% |
| Dagette | 9/10 | 4823 days | 15% |
| Teri C | 10/10 | 4853 days | 15% |
| Rob Klauer | 5/10 | 5025 days | 11% |
| Oliver Hardt | 9/10 | 5026 days | 15% |
| Val Phillips | 8/10 | 5030 days | 15% |
| Peter Adams | 9/10 | 5031 days | 15% |
| Harry Ruys | 8/10 | 5033 days | 15% |
| John McAllister | 9/10 | 5034 days | 15% |
| Keith Helen | 10/10 | 5037 days | 15% |
| Daniel Patricia | 9/10 | 5040 days | 15% |
| Laura Diepeveen | 8/10 | 5042 days | 15% |
| Fries | 10/10 | 5046 days | 15% |
| Karin Laurev | 10/10 | 5046 days | 15% |
| Gillian Rowe | 9/10 | 5047 days | 15% |
| Nigel Horrocks | 7/10 | 5047 days | 14% |
| Dieter Mangold | 10/10 | 5049 days | 15% |
| Lyn Deavin | 8/10 | 5049 days | 15% |
| Sabine & Stefan | 10/10 | 5050 days | 15% |
| Randewyk | 8/10 | 5050 days | 15% |
| Koster | 6/10 | 5052 days | 13% |
| Peter Aertssen | 7/10 | 5052 days | 14% |
| John A Jerome | 8/10 | 5052 days | 15% |
| Lynn Robinson | 10/10 | 5058 days | 15% |
| Heike | 9/10 | 5061 days | 15% |
| Robert MacLeod-Smith | 8/10 | 5062 days | 15% |
| Carel | 8/10 | 5063 days | 15% |
| Anna | 9/10 | 5064 days | 15% |
| Barrie Corless | 9/10 | 5065 days | 15% |
| Urban Reifler | 10/10 | 5077 days | 15% |
| Lyn Stainton | 10/10 | 5140 days | 15% |
| John & Vicki | 8/10 | 5144 days | 15% |
| jenckes | 9/10 | 5219 days | 15% |
| Debbie Smithers | 10/10 | 5361 days | 15% |
| Julie and Russ Charles | 10/10 | 5385 days | 15% |
| Kevin Wong | 10/10 | 5385 days | 15% |
| Rocipon | 8/10 | 5386 days | 15% |
| Margit and Corein Groenevelt | 7/10 | 5389 days | 14% |
| Richard Dudfield | 10/10 | 5389 days | 15% |
| John Duffy | 10/10 | 5389 days | 15% |
| Richard Gallichan | 9/10 | 5390 days | 15% |
| Jean Barker | 8/10 | 5390 days | 15% |
| Bette Eh | 10/10 | 5392 days | 15% |
| bryfrance | 10/10 | 5393 days | 15% |
| Juliane Kleiu | 10/10 | 5393 days | 15% |
| Claudia | 8/10 | 5393 days | 15% |
| E Brockbank | 9/10 | 5394 days | 15% |
| David Mellard | 10/10 | 5395 days | 15% |
| Bruce & Elaine Chote | 10/10 | 5395 days | 15% |
| Roland Berger | 7/10 | 5396 days | 14% |
| Ross | 9/10 | 5396 days | 15% |
| Gerstmann | 9/10 | 5397 days | 15% |
| Ekhard Wittkugel | 10/10 | 5399 days | 15% |
| Stephen Shearer | 10/10 | 5400 days | 15% |
| Monika | 10/10 | 5401 days | 15% |
| Betten | 9/10 | 5402 days | 15% |
| Stephen Jones | 9/10 | 5403 days | 15% |
| Mike and Diane Baker | 10/10 | 5404 days | 15% |
| Lenore Dejong | 10/10 | 5405 days | 15% |
| Andreas Fritesche | 8/10 | 5406 days | 15% |
| Matthys Kikke | 9/10 | 5407 days | 15% |
| Bucher Weruer | 10/10 | 5407 days | 15% |
| Camilla Andersson | 7/10 | 5408 days | 14% |
| Bob Adams | 10/10 | 5415 days | 15% |
| John | 8/10 | 5415 days | 15% |
| Katie Nicol | 10/10 | 5416 days | 15% |
| Martin Current | 9/10 | 5418 days | 15% |
| Teum and Orselien | 8/10 | 5419 days | 15% |
| Vanderhorst | 8/10 | 5419 days | 15% |
| John Price | 9/10 | 5421 days | 15% |
| Doris Schollenberger | 10/10 | 5421 days | 15% |
| Phil Hunter | 9/10 | 5422 days | 15% |
| Chris | 8/10 | 5423 days | 15% |
| Gordon Daniels | 8/10 | 5426 days | 15% |
| Hull | 9/10 | 5426 days | 15% |
| Lizzie | 10/10 | 5493 days | 15% |
| allesca | 10/10 | 5523 days | 15% |
| M Schram | 8/10 | 5686 days | 15% |
| Versteeg | 9/10 | 5689 days | 15% |
| Lomas | 10/10 | 5698 days | 15% |
| Maureen | 10/10 | 5702 days | 15% |
| Amy | 9/10 | 5707 days | 15% |
| Don & Geraldine | 10/10 | 5743 days | 15% |
| Hans and Astrid | 10/10 | 5745 days | 15% |
| Agnes | 10/10 | 5747 days | 15% |
| maggie Webster | 10/10 | 5754 days | 15% |
| Keita-Karen Buchanan | 10/10 | 5754 days | 15% |
| Lars Taarnhoej | 7/10 | 5754 days | 14% |
| markus Brandenberger | 10/10 | 5755 days | 15% |
| Jvjm Family | 9/10 | 5756 days | 15% |
| David B | 7/10 | 5763 days | 14% |
| Margaret O'Sullivan | 8/10 | 5763 days | 15% |
| Chris el capitan | 9/10 | 5773 days | 15% |
| John Cox | 9/10 | 5774 days | 15% |
| Muller Weissert | 8/10 | 5775 days | 15% |
| Brian Morris | 9/10 | 5777 days | 15% |
| Jobbs | 10/10 | 5777 days | 15% |
| Maria Newton | 9/10 | 5778 days | 15% |
| Dieter Groscurth | 8/10 | 5778 days | 15% |
| Gordon and Joyce | 9/10 | 5778 days | 15% |
| Remko Ebbens | 9/10 | 5781 days | 15% |
| Thijs Schoemaker | 8/10 | 5782 days | 15% |
| Armand | 5/10 | 5782 days | 11% |
| Ferth | 10/10 | 5782 days | 15% |
| J Kempeneers | 10/10 | 5782 days | 15% |
| Thea X | 5/10 | 5791 days | 11% |
| Keith Wilde | 10/10 | 5791 days | 15% |
| Dick Rosman | 9/10 | 5792 days | 15% |
| Terry Phillips | 5/10 | 5793 days | 11% |
| Jules | 8/10 | 5793 days | 15% |
| Carl Diehl | 9/10 | 5794 days | 15% |
| Paul Schoepfer | 9/10 | 5794 days | 15% |
| Uwe Rieper | 10/10 | 5795 days | 15% |
| Yvonne Ing | 10/10 | 5795 days | 15% |
| Diane Chapple | 9/10 | 5795 days | 15% |
| wannab | 9/10 | 5796 days | 15% |
| Kevin and Teresa | 9/10 | 5796 days | 15% |
| Christiane Lindenberg | 9/10 | 5805 days | 15% |
| Nigel Armstrong | 9/10 | 5807 days | 15% |
| Buss | 10/10 | 5809 days | 15% |
| John J | 9/10 | 5810 days | 15% |
| Heinrich Hax | 10/10 | 5816 days | 15% |
| marcusba | 8/10 | 5839 days | 15% |
| tanh | 9/10 | 5843 days | 15% |
| mariak | 7/10 | 5844 days | 14% |
| Silvana Thom | 10/10 | 5868 days | 15% |
| Wolfgang Dittrich | 10/10 | 5868 days | 15% |
| Chris Bulman | 10/10 | 5869 days | 15% |
| andyge | 8/10 | 5888 days | 15% |
| Ritag | 9/10 | 5974 days | 15% |
| regw | 10/10 | 5978 days | 15% |
| Cate | 9/10 | 6102 days | 15% |
| ginekek | 9/10 | 6102 days | 15% |
| geoffelizabeth | 9/10 | 6102 days | 15% |
| mikestep | 9/10 | 6102 days | 15% |
| EllenorO | 10/10 | 6103 days | 15% |
| Van Lent | 9/10 | 6104 days | 15% |
| Anna | 10/10 | 6104 days | 15% |
| Mike | 9/10 | 6107 days | 15% |
| Richard | 10/10 | 6112 days | 15% |
| Michael Walsall | 10/10 | 6112 days | 15% |
| AstridVG | 8/10 | 6119 days | 15% |
| Christine | 9/10 | 6119 days | 15% |
| Peter | 9/10 | 6119 days | 15% |
| DimitriD | 5/10 | 6119 days | 11% |
| Kitty | 9/10 | 6119 days | 15% |
| Max | 10/10 | 6122 days | 15% |
| Andy Baker | 9/10 | 6122 days | 15% |
| Francesca Sabat | 8/10 | 6124 days | 15% |
| Robert | 10/10 | 6133 days | 15% |
| Melissa Gillespie | 10/10 | 6133 days | 15% |
| Hetty | 9/10 | 6134 days | 15% |
| Charles | 7/10 | 6135 days | 14% |
| Byleveld | 8/10 | 6135 days | 15% |
| JoseB | 8/10 | 6136 days | 15% |
| MrHebbard | 10/10 | 6136 days | 15% |
| ChristineM | 10/10 | 6136 days | 15% |
| Elrik frau | 10/10 | 6136 days | 15% |
| Louise | 9/10 | 6143 days | 15% |
| Douglas | 9/10 | 6144 days | 15% |
| CSander | 9/10 | 6160 days | 15% |
| Patricia | 8/10 | 6171 days | 15% |
| Dijk | 8/10 | 6175 days | 15% |
| Josefine | 10/10 | 6175 days | 15% |
| Ducolq | 5/10 | 6175 days | 11% |
| Jacques | 8/10 | 6176 days | 15% |
| Carina | 8/10 | 6181 days | 15% |
| Michael | 9/10 | 6212 days | 15% |
| silvia | 8/10 | 6215 days | 15% |
| Anouk | 8/10 | 6215 days | 15% |
| Mat | 9/10 | 6220 days | 15% |
| Paul | 8/10 | 6266 days | 15% |
| Helga | 9/10 | 6277 days | 15% |
| Mikel | 9/10 | 6342 days | 15% |
| Christine | 6/10 | 6351 days | 13% |
| Jim Summers | 9/10 | 6351 days | 15% |
| Franz | 7/10 | 6473 days | 14% |
| Linda and Peter | 10/10 | 6481 days | 15% |
| Mike and Judy | 8/10 | 6482 days | 15% |
| Methers | 9/10 | 6482 days | 15% |
| Denise | 10/10 | 6485 days | 15% |
| Kavanagh | 8/10 | 6485 days | 15% |
| De Wijn | 8/10 | 6488 days | 15% |
| Lisa Jones | 9/10 | 6489 days | 15% |
| Christian | 9/10 | 6489 days | 15% |
| Soren Danning | 8/10 | 6489 days | 15% |
| Jones | 10/10 | 6493 days | 15% |
| Orla Hansen | 10/10 | 6494 days | 15% |
| Bauer | 10/10 | 6500 days | 15% |
| Aharon | 10/10 | 6500 days | 15% |
| D.A. Mulder | 9/10 | 6501 days | 15% |
| Jurg Meister | 8/10 | 6502 days | 15% |
| Sally and David Wallis | 10/10 | 6502 days | 15% |
| Knol | 9/10 | 6503 days | 15% |
| Sue Randall | 8/10 | 6506 days | 15% |
| Cole Penelope | 10/10 | 6506 days | 15% |
| Blenkoe | 6/10 | 6507 days | 13% |
| Erwin de Kleijn | 8/10 | 6507 days | 15% |
| Thomas | 9/10 | 6516 days | 15% |
| Bex | 10/10 | 6530 days | 15% |
| Van Hoof | 9/10 | 6542 days | 15% |
| Tim | 10/10 | 6542 days | 15% |
| Gabriel Faber | 9/10 | 6577 days | 15% |
| Jonkers | 9/10 | 6579 days | 15% |
| Edwin | 10/10 | 6583 days | 15% |
| Lyn Saxon | 10/10 | 6587 days | 15% |
| Wendy Williams | 10/10 | 6594 days | 15% |
| Hans Knappmann | 10/10 | 6704 days | 15% |
| Phillipa | 10/10 | 6812 days | 15% |
| Stefan&Gerte | 9/10 | 6826 days | 15% |
| Cat | 9/10 | 6832 days | 15% |
| TeamFlorida | 10/10 | 6839 days | 15% |
| Jo | 9/10 | 6839 days | 15% |
| Fenke | 9/10 | 6844 days | 15% |
| Bas | 9/10 | 6844 days | 15% |
| Martin Smith | 9/10 | 6849 days | 15% |
| John Beirne | 9/10 | 6856 days | 15% |
| Palle | 9/10 | 6861 days | 15% |
| Anna | 9/10 | 6861 days | 15% |
| Svenja | 10/10 | 6867 days | 15% |
| Shirely | 10/10 | 6867 days | 15% |
| Rogier | 8/10 | 6868 days | 15% |
| Wendy | 8/10 | 6872 days | 15% |
| Kerry | 10/10 | 6877 days | 15% |
| Henrich | 10/10 | 6877 days | 15% |
| Messing | 10/10 | 6880 days | 15% |
| Rolf Kruger | 10/10 | 6880 days | 15% |
| Ian | 8/10 | 6884 days | 15% |
| Peter | 9/10 | 6884 days | 15% |
| Brian | 10/10 | 6884 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.