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
90.02%
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 | 1339 days | 100% |
| Joanne&Ian | 10/10 | 1431 days | 75% |
| Geoff Steele | 8/10 | 2708 days | 17% |
| Axel and Patricia G | 6/10 | 2896 days | 14% |
| Leonie Westerhot | 8/10 | 2968 days | 15% |
| Ivanova R | 9/10 | 3225 days | 12% |
| Lorenz Pfisterer | 10/10 | 3237 days | 12% |
| Heidi et Mat | 8/10 | 3246 days | 12% |
| Anke Vater | 10/10 | 3247 days | 12% |
| Anouk Jongsma | 9/10 | 3255 days | 12% |
| Robin WUERFEL | 9/10 | 3327 days | 11% |
| Helen Parsons | 10/10 | 3647 days | 8% |
| Peter Beeloo | 9/10 | 3651 days | 8% |
| Laurent Arditi | 9/10 | 3835 days | 6% |
| Sheila Galpin | 9/10 | 3986 days | 4% |
| Simon Galpin | 9/10 | 3986 days | 4% |
| Douglas Dean | 10/10 | 3988 days | 4% |
| Stina Hultberg | 4/10 | 3992 days | 3% |
| Alexander Zimmer | 7/10 | 3993 days | 4% |
| Linus Larsson | 3/10 | 3994 days | 2% |
| Leon Courtney | 10/10 | 3995 days | 4% |
| Libby | 10/10 | 4009 days | 4% |
| Colin Billington | 7/10 | 4010 days | 4% |
| Don Wallis | 10/10 | 4013 days | 4% |
| Bill | 7/10 | 4014 days | 4% |
| Saskia | 5/10 | 4014 days | 3% |
| Terry Seaman | 8/10 | 4016 days | 4% |
| S B | 10/10 | 4029 days | 4% |
| M K | 10/10 | 4029 days | 4% |
| Alacchi Moustier | 10/10 | 4029 days | 4% |
| Maya Bakker-deDreu | 8/10 | 4037 days | 4% |
| Stuart Wilson | 8/10 | 4043 days | 3% |
| Fabian Lee | 5/10 | 4046 days | 3% |
| paul beacock | 10/10 | 4047 days | 3% |
| Gal Bero | 10/10 | 4050 days | 3% |
| Elly Zimmer | 6/10 | 4054 days | 3% |
| Bjorn Van Mulders | 10/10 | 4057 days | 3% |
| Kim Maertens | 9/10 | 4057 days | 3% |
| Steve Warren | 10/10 | 4169 days | 2% |
| hendrik king | 7/10 | 4261 days | 1% |
| Peter Jolliffe | 10/10 | 4353 days | 0% |
| Helen Dean | 10/10 | 4353 days | 0% |
| Dave Mertzig | 10/10 | 4353 days | 0% |
| Kathryn Pisco | 9/10 | 4359 days | 0% |
| Mike Pisco | 9/10 | 4359 days | 0% |
| Sebastian and Peter Beate | 10/10 | 4376 days | 0% |
| Fraser Goldsmith | 8/10 | 4377 days | 0% |
| Bucher | 9/10 | 4428 days | 5% |
| Marieke | 8/10 | 4429 days | 5% |
| Chew (Peter) | 7/10 | 4434 days | 5% |
| Natalie Nubler | 6/10 | 4435 days | 5% |
| Frans Derks | 9/10 | 4436 days | 5% |
| Meryem Buchwitz | 9/10 | 4456 days | 5% |
| roos wubben | 9/10 | 4459 days | 5% |
| Dagette | 9/10 | 4504 days | 5% |
| Teri C | 10/10 | 4534 days | 5% |
| Rob Klauer | 5/10 | 4706 days | 4% |
| Oliver Hardt | 9/10 | 4707 days | 5% |
| Val Phillips | 8/10 | 4711 days | 5% |
| Peter Adams | 9/10 | 4712 days | 5% |
| Harry Ruys | 8/10 | 4714 days | 5% |
| John McAllister | 9/10 | 4715 days | 5% |
| Keith Helen | 10/10 | 4718 days | 5% |
| Daniel Patricia | 9/10 | 4721 days | 5% |
| Laura Diepeveen | 8/10 | 4723 days | 5% |
| Fries | 10/10 | 4727 days | 5% |
| Karin Laurev | 10/10 | 4727 days | 5% |
| Gillian Rowe | 9/10 | 4728 days | 5% |
| Nigel Horrocks | 7/10 | 4728 days | 5% |
| Dieter Mangold | 10/10 | 4730 days | 5% |
| Lyn Deavin | 8/10 | 4730 days | 5% |
| Sabine & Stefan | 10/10 | 4731 days | 5% |
| Randewyk | 8/10 | 4731 days | 5% |
| Koster | 6/10 | 4733 days | 5% |
| Peter Aertssen | 7/10 | 4733 days | 5% |
| John A Jerome | 8/10 | 4733 days | 5% |
| Lynn Robinson | 10/10 | 4739 days | 5% |
| Heike | 9/10 | 4742 days | 5% |
| Robert MacLeod-Smith | 8/10 | 4743 days | 5% |
| Carel | 8/10 | 4744 days | 5% |
| Anna | 9/10 | 4745 days | 5% |
| Barrie Corless | 9/10 | 4746 days | 5% |
| Urban Reifler | 10/10 | 4758 days | 5% |
| Lyn Stainton | 10/10 | 4821 days | 5% |
| John & Vicki | 8/10 | 4825 days | 5% |
| jenckes | 9/10 | 4900 days | 5% |
| Debbie Smithers | 10/10 | 5042 days | 5% |
| Julie and Russ Charles | 10/10 | 5066 days | 5% |
| Kevin Wong | 10/10 | 5066 days | 5% |
| Rocipon | 8/10 | 5067 days | 5% |
| Margit and Corein Groenevelt | 7/10 | 5070 days | 5% |
| Richard Dudfield | 10/10 | 5070 days | 5% |
| John Duffy | 10/10 | 5070 days | 5% |
| Richard Gallichan | 9/10 | 5071 days | 5% |
| Jean Barker | 8/10 | 5071 days | 5% |
| Bette Eh | 10/10 | 5073 days | 5% |
| bryfrance | 10/10 | 5074 days | 5% |
| Juliane Kleiu | 10/10 | 5074 days | 5% |
| Claudia | 8/10 | 5074 days | 5% |
| E Brockbank | 9/10 | 5075 days | 5% |
| David Mellard | 10/10 | 5076 days | 5% |
| Bruce & Elaine Chote | 10/10 | 5076 days | 5% |
| Roland Berger | 7/10 | 5077 days | 5% |
| Ross | 9/10 | 5077 days | 5% |
| Gerstmann | 9/10 | 5078 days | 5% |
| Ekhard Wittkugel | 10/10 | 5080 days | 5% |
| Stephen Shearer | 10/10 | 5081 days | 5% |
| Monika | 10/10 | 5082 days | 5% |
| Betten | 9/10 | 5083 days | 5% |
| Stephen Jones | 9/10 | 5084 days | 5% |
| Mike and Diane Baker | 10/10 | 5085 days | 5% |
| Lenore Dejong | 10/10 | 5086 days | 5% |
| Andreas Fritesche | 8/10 | 5087 days | 5% |
| Matthys Kikke | 9/10 | 5088 days | 5% |
| Bucher Weruer | 10/10 | 5088 days | 5% |
| Camilla Andersson | 7/10 | 5089 days | 5% |
| Bob Adams | 10/10 | 5096 days | 5% |
| John | 8/10 | 5096 days | 5% |
| Katie Nicol | 10/10 | 5097 days | 5% |
| Martin Current | 9/10 | 5099 days | 5% |
| Teum and Orselien | 8/10 | 5100 days | 5% |
| Vanderhorst | 8/10 | 5100 days | 5% |
| John Price | 9/10 | 5102 days | 5% |
| Doris Schollenberger | 10/10 | 5102 days | 5% |
| Phil Hunter | 9/10 | 5103 days | 5% |
| Chris | 8/10 | 5104 days | 5% |
| Gordon Daniels | 8/10 | 5107 days | 5% |
| Hull | 9/10 | 5107 days | 5% |
| Lizzie | 10/10 | 5174 days | 5% |
| allesca | 10/10 | 5204 days | 5% |
| M Schram | 8/10 | 5367 days | 5% |
| Versteeg | 9/10 | 5370 days | 5% |
| Lomas | 10/10 | 5379 days | 5% |
| Maureen | 10/10 | 5383 days | 5% |
| Amy | 9/10 | 5388 days | 5% |
| Don & Geraldine | 10/10 | 5424 days | 5% |
| Hans and Astrid | 10/10 | 5426 days | 5% |
| Agnes | 10/10 | 5428 days | 5% |
| maggie Webster | 10/10 | 5435 days | 5% |
| Keita-Karen Buchanan | 10/10 | 5435 days | 5% |
| Lars Taarnhoej | 7/10 | 5435 days | 5% |
| markus Brandenberger | 10/10 | 5436 days | 5% |
| Jvjm Family | 9/10 | 5437 days | 5% |
| David B | 7/10 | 5444 days | 5% |
| Margaret O'Sullivan | 8/10 | 5444 days | 5% |
| Chris el capitan | 9/10 | 5454 days | 5% |
| John Cox | 9/10 | 5455 days | 5% |
| Muller Weissert | 8/10 | 5456 days | 5% |
| Brian Morris | 9/10 | 5458 days | 5% |
| Jobbs | 10/10 | 5458 days | 5% |
| Maria Newton | 9/10 | 5459 days | 5% |
| Dieter Groscurth | 8/10 | 5459 days | 5% |
| Gordon and Joyce | 9/10 | 5459 days | 5% |
| Remko Ebbens | 9/10 | 5462 days | 5% |
| Thijs Schoemaker | 8/10 | 5463 days | 5% |
| Armand | 5/10 | 5463 days | 4% |
| Ferth | 10/10 | 5463 days | 5% |
| J Kempeneers | 10/10 | 5463 days | 5% |
| Thea X | 5/10 | 5472 days | 4% |
| Keith Wilde | 10/10 | 5472 days | 5% |
| Dick Rosman | 9/10 | 5473 days | 5% |
| Terry Phillips | 5/10 | 5474 days | 4% |
| Jules | 8/10 | 5474 days | 5% |
| Carl Diehl | 9/10 | 5475 days | 5% |
| Paul Schoepfer | 9/10 | 5475 days | 5% |
| Uwe Rieper | 10/10 | 5476 days | 5% |
| Yvonne Ing | 10/10 | 5476 days | 5% |
| Diane Chapple | 9/10 | 5476 days | 5% |
| wannab | 9/10 | 5477 days | 5% |
| Kevin and Teresa | 9/10 | 5477 days | 5% |
| Christiane Lindenberg | 9/10 | 5486 days | 5% |
| Nigel Armstrong | 9/10 | 5488 days | 5% |
| Buss | 10/10 | 5490 days | 5% |
| John J | 9/10 | 5491 days | 5% |
| Heinrich Hax | 10/10 | 5497 days | 5% |
| marcusba | 8/10 | 5520 days | 5% |
| tanh | 9/10 | 5524 days | 5% |
| mariak | 7/10 | 5525 days | 5% |
| Silvana Thom | 10/10 | 5549 days | 5% |
| Wolfgang Dittrich | 10/10 | 5549 days | 5% |
| Chris Bulman | 10/10 | 5550 days | 5% |
| andyge | 8/10 | 5569 days | 5% |
| Ritag | 9/10 | 5655 days | 5% |
| regw | 10/10 | 5659 days | 5% |
| Cate | 9/10 | 5783 days | 5% |
| ginekek | 9/10 | 5783 days | 5% |
| geoffelizabeth | 9/10 | 5783 days | 5% |
| mikestep | 9/10 | 5783 days | 5% |
| EllenorO | 10/10 | 5784 days | 5% |
| Van Lent | 9/10 | 5785 days | 5% |
| Anna | 10/10 | 5785 days | 5% |
| Mike | 9/10 | 5787 days | 5% |
| Richard | 10/10 | 5793 days | 5% |
| Michael Walsall | 10/10 | 5793 days | 5% |
| AstridVG | 8/10 | 5800 days | 5% |
| Christine | 9/10 | 5800 days | 5% |
| Peter | 9/10 | 5800 days | 5% |
| DimitriD | 5/10 | 5800 days | 4% |
| Kitty | 9/10 | 5800 days | 5% |
| Max | 10/10 | 5802 days | 5% |
| Andy Baker | 9/10 | 5803 days | 5% |
| Francesca Sabat | 8/10 | 5805 days | 5% |
| Robert | 10/10 | 5814 days | 5% |
| Melissa Gillespie | 10/10 | 5814 days | 5% |
| Hetty | 9/10 | 5815 days | 5% |
| Charles | 7/10 | 5816 days | 5% |
| Byleveld | 8/10 | 5816 days | 5% |
| JoseB | 8/10 | 5817 days | 5% |
| MrHebbard | 10/10 | 5817 days | 5% |
| ChristineM | 10/10 | 5817 days | 5% |
| Elrik frau | 10/10 | 5817 days | 5% |
| Louise | 9/10 | 5824 days | 5% |
| Douglas | 9/10 | 5825 days | 5% |
| CSander | 9/10 | 5841 days | 5% |
| Patricia | 8/10 | 5851 days | 5% |
| Dijk | 8/10 | 5855 days | 5% |
| Josefine | 10/10 | 5855 days | 5% |
| Ducolq | 5/10 | 5855 days | 4% |
| Jacques | 8/10 | 5856 days | 5% |
| Carina | 8/10 | 5862 days | 5% |
| Michael | 9/10 | 5893 days | 5% |
| silvia | 8/10 | 5896 days | 5% |
| Anouk | 8/10 | 5896 days | 5% |
| Mat | 9/10 | 5900 days | 5% |
| Paul | 8/10 | 5947 days | 5% |
| Helga | 9/10 | 5958 days | 5% |
| Mikel | 9/10 | 6023 days | 5% |
| Christine | 6/10 | 6032 days | 5% |
| Jim Summers | 9/10 | 6032 days | 5% |
| Franz | 7/10 | 6154 days | 5% |
| Linda and Peter | 10/10 | 6162 days | 5% |
| Mike and Judy | 8/10 | 6163 days | 5% |
| Methers | 9/10 | 6163 days | 5% |
| Denise | 10/10 | 6166 days | 5% |
| Kavanagh | 8/10 | 6166 days | 5% |
| De Wijn | 8/10 | 6169 days | 5% |
| Lisa Jones | 9/10 | 6170 days | 5% |
| Christian | 9/10 | 6170 days | 5% |
| Soren Danning | 8/10 | 6170 days | 5% |
| Jones | 10/10 | 6174 days | 5% |
| Orla Hansen | 10/10 | 6175 days | 5% |
| Bauer | 10/10 | 6181 days | 5% |
| Aharon | 10/10 | 6181 days | 5% |
| D.A. Mulder | 9/10 | 6182 days | 5% |
| Jurg Meister | 8/10 | 6183 days | 5% |
| Sally and David Wallis | 10/10 | 6183 days | 5% |
| Knol | 9/10 | 6184 days | 5% |
| Sue Randall | 8/10 | 6187 days | 5% |
| Cole Penelope | 10/10 | 6187 days | 5% |
| Blenkoe | 6/10 | 6188 days | 5% |
| Erwin de Kleijn | 8/10 | 6188 days | 5% |
| Thomas | 9/10 | 6197 days | 5% |
| Bex | 10/10 | 6210 days | 5% |
| Van Hoof | 9/10 | 6223 days | 5% |
| Tim | 10/10 | 6223 days | 5% |
| Gabriel Faber | 9/10 | 6258 days | 5% |
| Jonkers | 9/10 | 6260 days | 5% |
| Edwin | 10/10 | 6264 days | 5% |
| Lyn Saxon | 10/10 | 6268 days | 5% |
| Wendy Williams | 10/10 | 6275 days | 5% |
| Hans Knappmann | 10/10 | 6385 days | 5% |
| Phillipa | 10/10 | 6493 days | 5% |
| Stefan&Gerte | 9/10 | 6507 days | 5% |
| Cat | 9/10 | 6513 days | 5% |
| TeamFlorida | 10/10 | 6520 days | 5% |
| Jo | 9/10 | 6520 days | 5% |
| Fenke | 9/10 | 6525 days | 5% |
| Bas | 9/10 | 6525 days | 5% |
| Martin Smith | 9/10 | 6530 days | 5% |
| John Beirne | 9/10 | 6537 days | 5% |
| Palle | 9/10 | 6542 days | 5% |
| Anna | 9/10 | 6542 days | 5% |
| Svenja | 10/10 | 6548 days | 5% |
| Shirely | 10/10 | 6548 days | 5% |
| Rogier | 8/10 | 6549 days | 5% |
| Wendy | 8/10 | 6553 days | 5% |
| Kerry | 10/10 | 6558 days | 5% |
| Henrich | 10/10 | 6558 days | 5% |
| Messing | 10/10 | 6561 days | 5% |
| Rolf Kruger | 10/10 | 6561 days | 5% |
| Ian | 8/10 | 6565 days | 5% |
| Peter | 9/10 | 6565 days | 5% |
| Brian | 10/10 | 6565 days | 5% |
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
-4.14% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 49 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 | -4.08% |
| 198 | -4.10% |
| 199 | -4.12% |
| 200 | -4.14% |
| 201 | -4.16% |
| 202 | -4.18% |
| 203 | -4.20% |
| … | … |
Balancing Adjustment
1.65% 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.