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
284 Valid Reviews
The Doubtful Sound Day Cruise experience has a total of 286 reviews. There are 284 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 284 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 105 |
|
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% |
88.56% Average
The raw data average (mean) for all the Doubtful Sound Day Cruise valid reviews is 88.56% and is based on 284 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 284 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
92.03%
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 |
|---|---|---|---|
| Cees Koeman | 10/10 | 59 days | 100% |
| Nanay | 10/10 | 1765 days | 5% |
| Joanne&Ian | 10/10 | 1857 days | 5% |
| Geoff Steele | 8/10 | 3133 days | 2% |
| Axel and Patricia G | 6/10 | 3322 days | 2% |
| Leonie Westerhot | 8/10 | 3394 days | 2% |
| Ivanova R | 9/10 | 3651 days | 1% |
| Lorenz Pfisterer | 10/10 | 3663 days | 1% |
| Heidi et Mat | 8/10 | 3672 days | 1% |
| Anke Vater | 10/10 | 3673 days | 1% |
| Anouk Jongsma | 9/10 | 3681 days | 1% |
| Robin WUERFEL | 9/10 | 3753 days | 1% |
| Helen Parsons | 10/10 | 4073 days | 0% |
| Peter Beeloo | 9/10 | 4076 days | 0% |
| Laurent Arditi | 9/10 | 4261 days | 0% |
| Sheila Galpin | 9/10 | 4412 days | 1% |
| Simon Galpin | 9/10 | 4412 days | 1% |
| Douglas Dean | 10/10 | 4414 days | 1% |
| Stina Hultberg | 4/10 | 4418 days | 0% |
| Alexander Zimmer | 7/10 | 4419 days | 1% |
| Linus Larsson | 3/10 | 4420 days | 0% |
| Leon Courtney | 10/10 | 4421 days | 1% |
| Libby | 10/10 | 4435 days | 1% |
| Colin Billington | 7/10 | 4436 days | 1% |
| Don Wallis | 10/10 | 4439 days | 1% |
| Bill | 7/10 | 4440 days | 1% |
| Saskia | 5/10 | 4440 days | 1% |
| Terry Seaman | 8/10 | 4442 days | 1% |
| S B | 10/10 | 4455 days | 1% |
| M K | 10/10 | 4455 days | 1% |
| Alacchi Moustier | 10/10 | 4455 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4463 days | 1% |
| Stuart Wilson | 8/10 | 4469 days | 1% |
| Fabian Lee | 5/10 | 4472 days | 1% |
| paul beacock | 10/10 | 4473 days | 1% |
| Gal Bero | 10/10 | 4476 days | 1% |
| Elly Zimmer | 6/10 | 4480 days | 1% |
| Bjorn Van Mulders | 10/10 | 4483 days | 1% |
| Kim Maertens | 9/10 | 4483 days | 1% |
| Steve Warren | 10/10 | 4595 days | 1% |
| hendrik king | 7/10 | 4687 days | 1% |
| Peter Jolliffe | 10/10 | 4779 days | 1% |
| Helen Dean | 10/10 | 4779 days | 1% |
| Dave Mertzig | 10/10 | 4779 days | 1% |
| Kathryn Pisco | 9/10 | 4785 days | 1% |
| Mike Pisco | 9/10 | 4785 days | 1% |
| Sebastian and Peter Beate | 10/10 | 4802 days | 1% |
| Fraser Goldsmith | 8/10 | 4803 days | 1% |
| Bucher | 9/10 | 4854 days | 1% |
| Marieke | 8/10 | 4855 days | 1% |
| Chew (Peter) | 7/10 | 4860 days | 1% |
| Natalie Nubler | 6/10 | 4861 days | 1% |
| Frans Derks | 9/10 | 4862 days | 1% |
| Meryem Buchwitz | 9/10 | 4882 days | 1% |
| roos wubben | 9/10 | 4885 days | 1% |
| Dagette | 9/10 | 4930 days | 1% |
| Teri C | 10/10 | 4960 days | 1% |
| Rob Klauer | 5/10 | 5132 days | 1% |
| Oliver Hardt | 9/10 | 5133 days | 1% |
| Val Phillips | 8/10 | 5137 days | 1% |
| Peter Adams | 9/10 | 5138 days | 1% |
| Harry Ruys | 8/10 | 5140 days | 1% |
| John McAllister | 9/10 | 5141 days | 1% |
| Keith Helen | 10/10 | 5144 days | 1% |
| Daniel Patricia | 9/10 | 5147 days | 1% |
| Laura Diepeveen | 8/10 | 5149 days | 1% |
| Fries | 10/10 | 5153 days | 1% |
| Karin Laurev | 10/10 | 5153 days | 1% |
| Gillian Rowe | 9/10 | 5154 days | 1% |
| Nigel Horrocks | 7/10 | 5154 days | 1% |
| Dieter Mangold | 10/10 | 5156 days | 1% |
| Lyn Deavin | 8/10 | 5156 days | 1% |
| Sabine & Stefan | 10/10 | 5157 days | 1% |
| Randewyk | 8/10 | 5157 days | 1% |
| Koster | 6/10 | 5159 days | 1% |
| Peter Aertssen | 7/10 | 5159 days | 1% |
| John A Jerome | 8/10 | 5159 days | 1% |
| Lynn Robinson | 10/10 | 5165 days | 1% |
| Heike | 9/10 | 5168 days | 1% |
| Robert MacLeod-Smith | 8/10 | 5169 days | 1% |
| Carel | 8/10 | 5170 days | 1% |
| Anna | 9/10 | 5171 days | 1% |
| Barrie Corless | 9/10 | 5172 days | 1% |
| Urban Reifler | 10/10 | 5184 days | 1% |
| Lyn Stainton | 10/10 | 5247 days | 1% |
| John & Vicki | 8/10 | 5251 days | 1% |
| jenckes | 9/10 | 5326 days | 1% |
| Debbie Smithers | 10/10 | 5468 days | 1% |
| Julie and Russ Charles | 10/10 | 5492 days | 1% |
| Kevin Wong | 10/10 | 5492 days | 1% |
| Rocipon | 8/10 | 5493 days | 1% |
| Margit and Corein Groenevelt | 7/10 | 5496 days | 1% |
| Richard Dudfield | 10/10 | 5496 days | 1% |
| John Duffy | 10/10 | 5496 days | 1% |
| Richard Gallichan | 9/10 | 5497 days | 1% |
| Jean Barker | 8/10 | 5497 days | 1% |
| Bette Eh | 10/10 | 5499 days | 1% |
| bryfrance | 10/10 | 5500 days | 1% |
| Juliane Kleiu | 10/10 | 5500 days | 1% |
| Claudia | 8/10 | 5500 days | 1% |
| E Brockbank | 9/10 | 5501 days | 1% |
| David Mellard | 10/10 | 5502 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5502 days | 1% |
| Roland Berger | 7/10 | 5503 days | 1% |
| Ross | 9/10 | 5503 days | 1% |
| Gerstmann | 9/10 | 5504 days | 1% |
| Ekhard Wittkugel | 10/10 | 5506 days | 1% |
| Stephen Shearer | 10/10 | 5507 days | 1% |
| Monika | 10/10 | 5508 days | 1% |
| Betten | 9/10 | 5509 days | 1% |
| Stephen Jones | 9/10 | 5510 days | 1% |
| Mike and Diane Baker | 10/10 | 5511 days | 1% |
| Lenore Dejong | 10/10 | 5512 days | 1% |
| Andreas Fritesche | 8/10 | 5513 days | 1% |
| Matthys Kikke | 9/10 | 5514 days | 1% |
| Bucher Weruer | 10/10 | 5514 days | 1% |
| Camilla Andersson | 7/10 | 5515 days | 1% |
| Bob Adams | 10/10 | 5522 days | 1% |
| John | 8/10 | 5522 days | 1% |
| Katie Nicol | 10/10 | 5523 days | 1% |
| Martin Current | 9/10 | 5525 days | 1% |
| Teum and Orselien | 8/10 | 5526 days | 1% |
| Vanderhorst | 8/10 | 5526 days | 1% |
| John Price | 9/10 | 5528 days | 1% |
| Doris Schollenberger | 10/10 | 5528 days | 1% |
| Phil Hunter | 9/10 | 5529 days | 1% |
| Chris | 8/10 | 5530 days | 1% |
| Gordon Daniels | 8/10 | 5533 days | 1% |
| Hull | 9/10 | 5533 days | 1% |
| Lizzie | 10/10 | 5600 days | 1% |
| allesca | 10/10 | 5630 days | 1% |
| M Schram | 8/10 | 5793 days | 1% |
| Versteeg | 9/10 | 5796 days | 1% |
| Lomas | 10/10 | 5805 days | 1% |
| Maureen | 10/10 | 5809 days | 1% |
| Amy | 9/10 | 5814 days | 1% |
| Don & Geraldine | 10/10 | 5850 days | 1% |
| Hans and Astrid | 10/10 | 5852 days | 1% |
| Agnes | 10/10 | 5854 days | 1% |
| maggie Webster | 10/10 | 5861 days | 1% |
| Keita-Karen Buchanan | 10/10 | 5861 days | 1% |
| Lars Taarnhoej | 7/10 | 5861 days | 1% |
| markus Brandenberger | 10/10 | 5862 days | 1% |
| Jvjm Family | 9/10 | 5863 days | 1% |
| David B | 7/10 | 5870 days | 1% |
| Margaret O'Sullivan | 8/10 | 5870 days | 1% |
| Chris el capitan | 9/10 | 5880 days | 1% |
| John Cox | 9/10 | 5881 days | 1% |
| Muller Weissert | 8/10 | 5882 days | 1% |
| Brian Morris | 9/10 | 5884 days | 1% |
| Jobbs | 10/10 | 5884 days | 1% |
| Maria Newton | 9/10 | 5885 days | 1% |
| Dieter Groscurth | 8/10 | 5885 days | 1% |
| Gordon and Joyce | 9/10 | 5885 days | 1% |
| Remko Ebbens | 9/10 | 5888 days | 1% |
| Thijs Schoemaker | 8/10 | 5889 days | 1% |
| Armand | 5/10 | 5889 days | 1% |
| Ferth | 10/10 | 5889 days | 1% |
| J Kempeneers | 10/10 | 5889 days | 1% |
| Thea X | 5/10 | 5898 days | 1% |
| Keith Wilde | 10/10 | 5898 days | 1% |
| Dick Rosman | 9/10 | 5899 days | 1% |
| Terry Phillips | 5/10 | 5900 days | 1% |
| Jules | 8/10 | 5900 days | 1% |
| Carl Diehl | 9/10 | 5901 days | 1% |
| Paul Schoepfer | 9/10 | 5901 days | 1% |
| Uwe Rieper | 10/10 | 5902 days | 1% |
| Yvonne Ing | 10/10 | 5902 days | 1% |
| Diane Chapple | 9/10 | 5902 days | 1% |
| wannab | 9/10 | 5903 days | 1% |
| Kevin and Teresa | 9/10 | 5903 days | 1% |
| Christiane Lindenberg | 9/10 | 5912 days | 1% |
| Nigel Armstrong | 9/10 | 5914 days | 1% |
| Buss | 10/10 | 5916 days | 1% |
| John J | 9/10 | 5917 days | 1% |
| Heinrich Hax | 10/10 | 5923 days | 1% |
| marcusba | 8/10 | 5946 days | 1% |
| tanh | 9/10 | 5950 days | 1% |
| mariak | 7/10 | 5951 days | 1% |
| Silvana Thom | 10/10 | 5975 days | 1% |
| Wolfgang Dittrich | 10/10 | 5975 days | 1% |
| Chris Bulman | 10/10 | 5976 days | 1% |
| andyge | 8/10 | 5995 days | 1% |
| Ritag | 9/10 | 6081 days | 1% |
| regw | 10/10 | 6085 days | 1% |
| Cate | 9/10 | 6208 days | 1% |
| ginekek | 9/10 | 6209 days | 1% |
| geoffelizabeth | 9/10 | 6209 days | 1% |
| mikestep | 9/10 | 6209 days | 1% |
| EllenorO | 10/10 | 6209 days | 1% |
| Van Lent | 9/10 | 6210 days | 1% |
| Anna | 10/10 | 6210 days | 1% |
| Mike | 9/10 | 6213 days | 1% |
| Richard | 10/10 | 6218 days | 1% |
| Michael Walsall | 10/10 | 6218 days | 1% |
| AstridVG | 8/10 | 6225 days | 1% |
| Christine | 9/10 | 6225 days | 1% |
| Peter | 9/10 | 6225 days | 1% |
| DimitriD | 5/10 | 6226 days | 1% |
| Kitty | 9/10 | 6226 days | 1% |
| Max | 10/10 | 6228 days | 1% |
| Andy Baker | 9/10 | 6229 days | 1% |
| Francesca Sabat | 8/10 | 6231 days | 1% |
| Robert | 10/10 | 6239 days | 1% |
| Melissa Gillespie | 10/10 | 6240 days | 1% |
| Hetty | 9/10 | 6240 days | 1% |
| Charles | 7/10 | 6241 days | 1% |
| Byleveld | 8/10 | 6242 days | 1% |
| JoseB | 8/10 | 6243 days | 1% |
| MrHebbard | 10/10 | 6243 days | 1% |
| ChristineM | 10/10 | 6243 days | 1% |
| Elrik frau | 10/10 | 6243 days | 1% |
| Louise | 9/10 | 6249 days | 1% |
| Douglas | 9/10 | 6250 days | 1% |
| CSander | 9/10 | 6267 days | 1% |
| Patricia | 8/10 | 6277 days | 1% |
| Dijk | 8/10 | 6281 days | 1% |
| Josefine | 10/10 | 6281 days | 1% |
| Ducolq | 5/10 | 6281 days | 1% |
| Jacques | 8/10 | 6282 days | 1% |
| Carina | 8/10 | 6287 days | 1% |
| Michael | 9/10 | 6319 days | 1% |
| silvia | 8/10 | 6321 days | 1% |
| Anouk | 8/10 | 6321 days | 1% |
| Mat | 9/10 | 6326 days | 1% |
| Paul | 8/10 | 6372 days | 1% |
| Helga | 9/10 | 6383 days | 1% |
| Mikel | 9/10 | 6448 days | 1% |
| Christine | 6/10 | 6457 days | 1% |
| Jim Summers | 9/10 | 6457 days | 1% |
| Franz | 7/10 | 6580 days | 1% |
| Linda and Peter | 10/10 | 6588 days | 1% |
| Mike and Judy | 8/10 | 6589 days | 1% |
| Methers | 9/10 | 6589 days | 1% |
| Denise | 10/10 | 6592 days | 1% |
| Kavanagh | 8/10 | 6592 days | 1% |
| De Wijn | 8/10 | 6595 days | 1% |
| Lisa Jones | 9/10 | 6596 days | 1% |
| Christian | 9/10 | 6596 days | 1% |
| Soren Danning | 8/10 | 6596 days | 1% |
| Jones | 10/10 | 6600 days | 1% |
| Orla Hansen | 10/10 | 6601 days | 1% |
| Bauer | 10/10 | 6607 days | 1% |
| Aharon | 10/10 | 6607 days | 1% |
| D.A. Mulder | 9/10 | 6608 days | 1% |
| Jurg Meister | 8/10 | 6609 days | 1% |
| Sally and David Wallis | 10/10 | 6609 days | 1% |
| Knol | 9/10 | 6610 days | 1% |
| Sue Randall | 8/10 | 6613 days | 1% |
| Cole Penelope | 10/10 | 6613 days | 1% |
| Blenkoe | 6/10 | 6614 days | 1% |
| Erwin de Kleijn | 8/10 | 6614 days | 1% |
| Thomas | 9/10 | 6623 days | 1% |
| Bex | 10/10 | 6636 days | 1% |
| Van Hoof | 9/10 | 6649 days | 1% |
| Tim | 10/10 | 6649 days | 1% |
| Gabriel Faber | 9/10 | 6684 days | 1% |
| Jonkers | 9/10 | 6686 days | 1% |
| Edwin | 10/10 | 6690 days | 1% |
| Lyn Saxon | 10/10 | 6694 days | 1% |
| Wendy Williams | 10/10 | 6701 days | 1% |
| Hans Knappmann | 10/10 | 6811 days | 1% |
| Phillipa | 10/10 | 6919 days | 1% |
| Stefan&Gerte | 9/10 | 6933 days | 1% |
| Cat | 9/10 | 6939 days | 1% |
| TeamFlorida | 10/10 | 6946 days | 1% |
| Jo | 9/10 | 6946 days | 1% |
| Fenke | 9/10 | 6951 days | 1% |
| Bas | 9/10 | 6951 days | 1% |
| Martin Smith | 9/10 | 6956 days | 1% |
| John Beirne | 9/10 | 6963 days | 1% |
| Palle | 9/10 | 6968 days | 1% |
| Anna | 9/10 | 6968 days | 1% |
| Svenja | 10/10 | 6974 days | 1% |
| Shirely | 10/10 | 6974 days | 1% |
| Rogier | 8/10 | 6975 days | 1% |
| Wendy | 8/10 | 6979 days | 1% |
| Kerry | 10/10 | 6984 days | 1% |
| Henrich | 10/10 | 6984 days | 1% |
| Messing | 10/10 | 6987 days | 1% |
| Rolf Kruger | 10/10 | 6987 days | 1% |
| Ian | 8/10 | 6991 days | 1% |
| Peter | 9/10 | 6991 days | 1% |
| Brian | 10/10 | 6991 days | 1% |
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
-0.78% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 60 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 42 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 39 | -0.73% |
| 40 | -0.75% |
| 41 | -0.77% |
| 42 | -0.78% |
| 43 | -0.80% |
| 44 | -0.82% |
| 45 | -0.84% |
| … | … |
Balancing Adjustment
0.84% 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
92%
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.