G'day, 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 | 1660 days | 100% |
| Joanne&Ian | 10/10 | 1752 days | 81% |
| Geoff Steele | 8/10 | 3028 days | 40% |
| Axel and Patricia G | 6/10 | 3217 days | 30% |
| Leonie Westerhot | 8/10 | 3289 days | 32% |
| Ivanova R | 9/10 | 3546 days | 25% |
| Lorenz Pfisterer | 10/10 | 3558 days | 25% |
| Heidi et Mat | 8/10 | 3567 days | 24% |
| Anke Vater | 10/10 | 3568 days | 24% |
| Anouk Jongsma | 9/10 | 3576 days | 24% |
| Robin WUERFEL | 9/10 | 3648 days | 22% |
| Helen Parsons | 10/10 | 3968 days | 12% |
| Peter Beeloo | 9/10 | 3971 days | 12% |
| Laurent Arditi | 9/10 | 4156 days | 7% |
| Sheila Galpin | 9/10 | 4307 days | 2% |
| Simon Galpin | 9/10 | 4307 days | 2% |
| Douglas Dean | 10/10 | 4309 days | 2% |
| Stina Hultberg | 4/10 | 4313 days | 1% |
| Alexander Zimmer | 7/10 | 4314 days | 2% |
| Linus Larsson | 3/10 | 4315 days | 1% |
| Leon Courtney | 10/10 | 4316 days | 2% |
| Libby | 10/10 | 4330 days | 1% |
| Colin Billington | 7/10 | 4331 days | 1% |
| Don Wallis | 10/10 | 4334 days | 1% |
| Bill | 7/10 | 4335 days | 1% |
| Saskia | 5/10 | 4335 days | 1% |
| Terry Seaman | 8/10 | 4337 days | 1% |
| S B | 10/10 | 4350 days | 1% |
| M K | 10/10 | 4350 days | 1% |
| Alacchi Moustier | 10/10 | 4350 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4358 days | 1% |
| Stuart Wilson | 8/10 | 4364 days | 0% |
| Fabian Lee | 5/10 | 4367 days | 0% |
| paul beacock | 10/10 | 4368 days | 0% |
| Gal Bero | 10/10 | 4371 days | 0% |
| Elly Zimmer | 6/10 | 4375 days | 0% |
| Bjorn Van Mulders | 10/10 | 4378 days | 0% |
| Kim Maertens | 9/10 | 4378 days | 0% |
| Steve Warren | 10/10 | 4490 days | 15% |
| hendrik king | 7/10 | 4582 days | 14% |
| Peter Jolliffe | 10/10 | 4674 days | 15% |
| Helen Dean | 10/10 | 4674 days | 15% |
| Dave Mertzig | 10/10 | 4674 days | 15% |
| Kathryn Pisco | 9/10 | 4680 days | 15% |
| Mike Pisco | 9/10 | 4680 days | 15% |
| Sebastian and Peter Beate | 10/10 | 4697 days | 15% |
| Fraser Goldsmith | 8/10 | 4698 days | 15% |
| Bucher | 9/10 | 4749 days | 15% |
| Marieke | 8/10 | 4750 days | 15% |
| Chew (Peter) | 7/10 | 4755 days | 14% |
| Natalie Nubler | 6/10 | 4756 days | 13% |
| Frans Derks | 9/10 | 4757 days | 15% |
| Meryem Buchwitz | 9/10 | 4777 days | 15% |
| roos wubben | 9/10 | 4780 days | 15% |
| Dagette | 9/10 | 4825 days | 15% |
| Teri C | 10/10 | 4855 days | 15% |
| Rob Klauer | 5/10 | 5027 days | 12% |
| Oliver Hardt | 9/10 | 5028 days | 15% |
| Val Phillips | 8/10 | 5032 days | 15% |
| Peter Adams | 9/10 | 5033 days | 15% |
| Harry Ruys | 8/10 | 5035 days | 15% |
| John McAllister | 9/10 | 5036 days | 15% |
| Keith Helen | 10/10 | 5039 days | 15% |
| Daniel Patricia | 9/10 | 5042 days | 15% |
| Laura Diepeveen | 8/10 | 5044 days | 15% |
| Fries | 10/10 | 5048 days | 15% |
| Karin Laurev | 10/10 | 5048 days | 15% |
| Gillian Rowe | 9/10 | 5049 days | 15% |
| Nigel Horrocks | 7/10 | 5049 days | 14% |
| Dieter Mangold | 10/10 | 5051 days | 15% |
| Lyn Deavin | 8/10 | 5051 days | 15% |
| Sabine & Stefan | 10/10 | 5052 days | 15% |
| Randewyk | 8/10 | 5052 days | 15% |
| Koster | 6/10 | 5054 days | 13% |
| Peter Aertssen | 7/10 | 5054 days | 14% |
| John A Jerome | 8/10 | 5054 days | 15% |
| Lynn Robinson | 10/10 | 5060 days | 15% |
| Heike | 9/10 | 5063 days | 15% |
| Robert MacLeod-Smith | 8/10 | 5064 days | 15% |
| Carel | 8/10 | 5065 days | 15% |
| Anna | 9/10 | 5066 days | 15% |
| Barrie Corless | 9/10 | 5067 days | 15% |
| Urban Reifler | 10/10 | 5079 days | 15% |
| Lyn Stainton | 10/10 | 5142 days | 15% |
| John & Vicki | 8/10 | 5146 days | 15% |
| jenckes | 9/10 | 5221 days | 15% |
| Debbie Smithers | 10/10 | 5363 days | 15% |
| Julie and Russ Charles | 10/10 | 5387 days | 15% |
| Kevin Wong | 10/10 | 5387 days | 15% |
| Rocipon | 8/10 | 5388 days | 15% |
| Margit and Corein Groenevelt | 7/10 | 5391 days | 14% |
| Richard Dudfield | 10/10 | 5391 days | 15% |
| John Duffy | 10/10 | 5391 days | 15% |
| Richard Gallichan | 9/10 | 5392 days | 15% |
| Jean Barker | 8/10 | 5392 days | 15% |
| Bette Eh | 10/10 | 5394 days | 15% |
| bryfrance | 10/10 | 5395 days | 15% |
| Juliane Kleiu | 10/10 | 5395 days | 15% |
| Claudia | 8/10 | 5395 days | 15% |
| E Brockbank | 9/10 | 5396 days | 15% |
| David Mellard | 10/10 | 5397 days | 15% |
| Bruce & Elaine Chote | 10/10 | 5397 days | 15% |
| Roland Berger | 7/10 | 5398 days | 14% |
| Ross | 9/10 | 5398 days | 15% |
| Gerstmann | 9/10 | 5399 days | 15% |
| Ekhard Wittkugel | 10/10 | 5401 days | 15% |
| Stephen Shearer | 10/10 | 5402 days | 15% |
| Monika | 10/10 | 5403 days | 15% |
| Betten | 9/10 | 5404 days | 15% |
| Stephen Jones | 9/10 | 5405 days | 15% |
| Mike and Diane Baker | 10/10 | 5406 days | 15% |
| Lenore Dejong | 10/10 | 5407 days | 15% |
| Andreas Fritesche | 8/10 | 5408 days | 15% |
| Matthys Kikke | 9/10 | 5409 days | 15% |
| Bucher Weruer | 10/10 | 5409 days | 15% |
| Camilla Andersson | 7/10 | 5410 days | 14% |
| Bob Adams | 10/10 | 5417 days | 15% |
| John | 8/10 | 5417 days | 15% |
| Katie Nicol | 10/10 | 5418 days | 15% |
| Martin Current | 9/10 | 5420 days | 15% |
| Teum and Orselien | 8/10 | 5421 days | 15% |
| Vanderhorst | 8/10 | 5421 days | 15% |
| John Price | 9/10 | 5423 days | 15% |
| Doris Schollenberger | 10/10 | 5423 days | 15% |
| Phil Hunter | 9/10 | 5424 days | 15% |
| Chris | 8/10 | 5425 days | 15% |
| Gordon Daniels | 8/10 | 5428 days | 15% |
| Hull | 9/10 | 5428 days | 15% |
| Lizzie | 10/10 | 5495 days | 15% |
| allesca | 10/10 | 5525 days | 15% |
| M Schram | 8/10 | 5688 days | 15% |
| Versteeg | 9/10 | 5691 days | 15% |
| Lomas | 10/10 | 5700 days | 15% |
| Maureen | 10/10 | 5704 days | 15% |
| Amy | 9/10 | 5709 days | 15% |
| Don & Geraldine | 10/10 | 5745 days | 15% |
| Hans and Astrid | 10/10 | 5747 days | 15% |
| Agnes | 10/10 | 5749 days | 15% |
| maggie Webster | 10/10 | 5756 days | 15% |
| Keita-Karen Buchanan | 10/10 | 5756 days | 15% |
| Lars Taarnhoej | 7/10 | 5756 days | 14% |
| markus Brandenberger | 10/10 | 5757 days | 15% |
| Jvjm Family | 9/10 | 5758 days | 15% |
| David B | 7/10 | 5765 days | 14% |
| Margaret O'Sullivan | 8/10 | 5765 days | 15% |
| Chris el capitan | 9/10 | 5775 days | 15% |
| John Cox | 9/10 | 5776 days | 15% |
| Muller Weissert | 8/10 | 5777 days | 15% |
| Brian Morris | 9/10 | 5779 days | 15% |
| Jobbs | 10/10 | 5779 days | 15% |
| Maria Newton | 9/10 | 5780 days | 15% |
| Dieter Groscurth | 8/10 | 5780 days | 15% |
| Gordon and Joyce | 9/10 | 5780 days | 15% |
| Remko Ebbens | 9/10 | 5783 days | 15% |
| Thijs Schoemaker | 8/10 | 5784 days | 15% |
| Armand | 5/10 | 5784 days | 12% |
| Ferth | 10/10 | 5784 days | 15% |
| J Kempeneers | 10/10 | 5784 days | 15% |
| Thea X | 5/10 | 5793 days | 12% |
| Keith Wilde | 10/10 | 5793 days | 15% |
| Dick Rosman | 9/10 | 5794 days | 15% |
| Terry Phillips | 5/10 | 5795 days | 12% |
| Jules | 8/10 | 5795 days | 15% |
| Carl Diehl | 9/10 | 5796 days | 15% |
| Paul Schoepfer | 9/10 | 5796 days | 15% |
| Uwe Rieper | 10/10 | 5797 days | 15% |
| Yvonne Ing | 10/10 | 5797 days | 15% |
| Diane Chapple | 9/10 | 5797 days | 15% |
| wannab | 9/10 | 5798 days | 15% |
| Kevin and Teresa | 9/10 | 5798 days | 15% |
| Christiane Lindenberg | 9/10 | 5807 days | 15% |
| Nigel Armstrong | 9/10 | 5809 days | 15% |
| Buss | 10/10 | 5811 days | 15% |
| John J | 9/10 | 5812 days | 15% |
| Heinrich Hax | 10/10 | 5818 days | 15% |
| marcusba | 8/10 | 5841 days | 15% |
| tanh | 9/10 | 5845 days | 15% |
| mariak | 7/10 | 5846 days | 14% |
| Silvana Thom | 10/10 | 5870 days | 15% |
| Wolfgang Dittrich | 10/10 | 5870 days | 15% |
| Chris Bulman | 10/10 | 5871 days | 15% |
| andyge | 8/10 | 5890 days | 15% |
| Ritag | 9/10 | 5976 days | 15% |
| regw | 10/10 | 5980 days | 15% |
| Cate | 9/10 | 6103 days | 15% |
| ginekek | 9/10 | 6104 days | 15% |
| geoffelizabeth | 9/10 | 6104 days | 15% |
| mikestep | 9/10 | 6104 days | 15% |
| EllenorO | 10/10 | 6104 days | 15% |
| Van Lent | 9/10 | 6105 days | 15% |
| Anna | 10/10 | 6105 days | 15% |
| Mike | 9/10 | 6108 days | 15% |
| Richard | 10/10 | 6113 days | 15% |
| Michael Walsall | 10/10 | 6113 days | 15% |
| AstridVG | 8/10 | 6120 days | 15% |
| Christine | 9/10 | 6120 days | 15% |
| Peter | 9/10 | 6120 days | 15% |
| DimitriD | 5/10 | 6121 days | 12% |
| Kitty | 9/10 | 6121 days | 15% |
| Max | 10/10 | 6123 days | 15% |
| Andy Baker | 9/10 | 6124 days | 15% |
| Francesca Sabat | 8/10 | 6126 days | 15% |
| Robert | 10/10 | 6134 days | 15% |
| Melissa Gillespie | 10/10 | 6135 days | 15% |
| Hetty | 9/10 | 6135 days | 15% |
| Charles | 7/10 | 6136 days | 14% |
| Byleveld | 8/10 | 6137 days | 15% |
| JoseB | 8/10 | 6138 days | 15% |
| MrHebbard | 10/10 | 6138 days | 15% |
| ChristineM | 10/10 | 6138 days | 15% |
| Elrik frau | 10/10 | 6138 days | 15% |
| Louise | 9/10 | 6144 days | 15% |
| Douglas | 9/10 | 6145 days | 15% |
| CSander | 9/10 | 6162 days | 15% |
| Patricia | 8/10 | 6172 days | 15% |
| Dijk | 8/10 | 6176 days | 15% |
| Josefine | 10/10 | 6176 days | 15% |
| Ducolq | 5/10 | 6176 days | 12% |
| Jacques | 8/10 | 6177 days | 15% |
| Carina | 8/10 | 6182 days | 15% |
| Michael | 9/10 | 6214 days | 15% |
| silvia | 8/10 | 6216 days | 15% |
| Anouk | 8/10 | 6216 days | 15% |
| Mat | 9/10 | 6221 days | 15% |
| Paul | 8/10 | 6267 days | 15% |
| Helga | 9/10 | 6278 days | 15% |
| Mikel | 9/10 | 6343 days | 15% |
| Christine | 6/10 | 6352 days | 13% |
| Jim Summers | 9/10 | 6352 days | 15% |
| Franz | 7/10 | 6475 days | 14% |
| Linda and Peter | 10/10 | 6483 days | 15% |
| Mike and Judy | 8/10 | 6484 days | 15% |
| Methers | 9/10 | 6484 days | 15% |
| Denise | 10/10 | 6487 days | 15% |
| Kavanagh | 8/10 | 6487 days | 15% |
| De Wijn | 8/10 | 6490 days | 15% |
| Lisa Jones | 9/10 | 6491 days | 15% |
| Christian | 9/10 | 6491 days | 15% |
| Soren Danning | 8/10 | 6491 days | 15% |
| Jones | 10/10 | 6495 days | 15% |
| Orla Hansen | 10/10 | 6496 days | 15% |
| Bauer | 10/10 | 6502 days | 15% |
| Aharon | 10/10 | 6502 days | 15% |
| D.A. Mulder | 9/10 | 6503 days | 15% |
| Jurg Meister | 8/10 | 6504 days | 15% |
| Sally and David Wallis | 10/10 | 6504 days | 15% |
| Knol | 9/10 | 6505 days | 15% |
| Sue Randall | 8/10 | 6508 days | 15% |
| Cole Penelope | 10/10 | 6508 days | 15% |
| Blenkoe | 6/10 | 6509 days | 13% |
| Erwin de Kleijn | 8/10 | 6509 days | 15% |
| Thomas | 9/10 | 6518 days | 15% |
| Bex | 10/10 | 6531 days | 15% |
| Van Hoof | 9/10 | 6544 days | 15% |
| Tim | 10/10 | 6544 days | 15% |
| Gabriel Faber | 9/10 | 6579 days | 15% |
| Jonkers | 9/10 | 6581 days | 15% |
| Edwin | 10/10 | 6585 days | 15% |
| Lyn Saxon | 10/10 | 6589 days | 15% |
| Wendy Williams | 10/10 | 6596 days | 15% |
| Hans Knappmann | 10/10 | 6706 days | 15% |
| Phillipa | 10/10 | 6814 days | 15% |
| Stefan&Gerte | 9/10 | 6828 days | 15% |
| Cat | 9/10 | 6834 days | 15% |
| TeamFlorida | 10/10 | 6841 days | 15% |
| Jo | 9/10 | 6841 days | 15% |
| Fenke | 9/10 | 6846 days | 15% |
| Bas | 9/10 | 6846 days | 15% |
| Martin Smith | 9/10 | 6851 days | 15% |
| John Beirne | 9/10 | 6858 days | 15% |
| Palle | 9/10 | 6863 days | 15% |
| Anna | 9/10 | 6863 days | 15% |
| Svenja | 10/10 | 6869 days | 15% |
| Shirely | 10/10 | 6869 days | 15% |
| Rogier | 8/10 | 6870 days | 15% |
| Wendy | 8/10 | 6874 days | 15% |
| Kerry | 10/10 | 6879 days | 15% |
| Henrich | 10/10 | 6879 days | 15% |
| Messing | 10/10 | 6882 days | 15% |
| Rolf Kruger | 10/10 | 6882 days | 15% |
| Ian | 8/10 | 6886 days | 15% |
| Peter | 9/10 | 6886 days | 15% |
| Brian | 10/10 | 6886 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
-4.05% 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 | -3.99% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 201 | -4.07% |
| 202 | -4.09% |
| 203 | -4.11% |
| … | … |
Balancing Adjustment
1.69% 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.