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
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 | 38 days | 100% |
| Nanay | 10/10 | 1744 days | 5% |
| Joanne&Ian | 10/10 | 1836 days | 5% |
| Geoff Steele | 8/10 | 3112 days | 2% |
| Axel and Patricia G | 6/10 | 3301 days | 2% |
| Leonie Westerhot | 8/10 | 3373 days | 2% |
| Ivanova R | 9/10 | 3630 days | 1% |
| Lorenz Pfisterer | 10/10 | 3642 days | 1% |
| Heidi et Mat | 8/10 | 3651 days | 1% |
| Anke Vater | 10/10 | 3652 days | 1% |
| Anouk Jongsma | 9/10 | 3660 days | 1% |
| Robin WUERFEL | 9/10 | 3732 days | 1% |
| Helen Parsons | 10/10 | 4052 days | 0% |
| Peter Beeloo | 9/10 | 4055 days | 0% |
| Laurent Arditi | 9/10 | 4240 days | 0% |
| Sheila Galpin | 9/10 | 4391 days | 1% |
| Simon Galpin | 9/10 | 4391 days | 1% |
| Douglas Dean | 10/10 | 4393 days | 1% |
| Stina Hultberg | 4/10 | 4397 days | 0% |
| Alexander Zimmer | 7/10 | 4398 days | 1% |
| Linus Larsson | 3/10 | 4399 days | 0% |
| Leon Courtney | 10/10 | 4400 days | 1% |
| Libby | 10/10 | 4414 days | 1% |
| Colin Billington | 7/10 | 4415 days | 1% |
| Don Wallis | 10/10 | 4418 days | 1% |
| Bill | 7/10 | 4419 days | 1% |
| Saskia | 5/10 | 4419 days | 0% |
| Terry Seaman | 8/10 | 4421 days | 1% |
| S B | 10/10 | 4434 days | 1% |
| M K | 10/10 | 4434 days | 1% |
| Alacchi Moustier | 10/10 | 4434 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4442 days | 1% |
| Stuart Wilson | 8/10 | 4448 days | 1% |
| Fabian Lee | 5/10 | 4451 days | 0% |
| paul beacock | 10/10 | 4452 days | 1% |
| Gal Bero | 10/10 | 4455 days | 1% |
| Elly Zimmer | 6/10 | 4459 days | 1% |
| Bjorn Van Mulders | 10/10 | 4462 days | 1% |
| Kim Maertens | 9/10 | 4462 days | 1% |
| Steve Warren | 10/10 | 4574 days | 1% |
| hendrik king | 7/10 | 4666 days | 1% |
| Peter Jolliffe | 10/10 | 4758 days | 1% |
| Helen Dean | 10/10 | 4758 days | 1% |
| Dave Mertzig | 10/10 | 4758 days | 1% |
| Kathryn Pisco | 9/10 | 4764 days | 1% |
| Mike Pisco | 9/10 | 4764 days | 1% |
| Sebastian and Peter Beate | 10/10 | 4781 days | 1% |
| Fraser Goldsmith | 8/10 | 4782 days | 1% |
| Bucher | 9/10 | 4833 days | 1% |
| Marieke | 8/10 | 4834 days | 1% |
| Chew (Peter) | 7/10 | 4839 days | 1% |
| Natalie Nubler | 6/10 | 4840 days | 1% |
| Frans Derks | 9/10 | 4841 days | 1% |
| Meryem Buchwitz | 9/10 | 4861 days | 1% |
| roos wubben | 9/10 | 4864 days | 1% |
| Dagette | 9/10 | 4909 days | 1% |
| Teri C | 10/10 | 4939 days | 1% |
| Rob Klauer | 5/10 | 5111 days | 0% |
| Oliver Hardt | 9/10 | 5112 days | 1% |
| Val Phillips | 8/10 | 5116 days | 1% |
| Peter Adams | 9/10 | 5117 days | 1% |
| Harry Ruys | 8/10 | 5119 days | 1% |
| John McAllister | 9/10 | 5120 days | 1% |
| Keith Helen | 10/10 | 5123 days | 1% |
| Daniel Patricia | 9/10 | 5126 days | 1% |
| Laura Diepeveen | 8/10 | 5128 days | 1% |
| Fries | 10/10 | 5132 days | 1% |
| Karin Laurev | 10/10 | 5132 days | 1% |
| Gillian Rowe | 9/10 | 5133 days | 1% |
| Nigel Horrocks | 7/10 | 5133 days | 1% |
| Dieter Mangold | 10/10 | 5135 days | 1% |
| Lyn Deavin | 8/10 | 5135 days | 1% |
| Sabine & Stefan | 10/10 | 5136 days | 1% |
| Randewyk | 8/10 | 5136 days | 1% |
| Koster | 6/10 | 5138 days | 1% |
| Peter Aertssen | 7/10 | 5138 days | 1% |
| John A Jerome | 8/10 | 5138 days | 1% |
| Lynn Robinson | 10/10 | 5144 days | 1% |
| Heike | 9/10 | 5147 days | 1% |
| Robert MacLeod-Smith | 8/10 | 5148 days | 1% |
| Carel | 8/10 | 5149 days | 1% |
| Anna | 9/10 | 5150 days | 1% |
| Barrie Corless | 9/10 | 5151 days | 1% |
| Urban Reifler | 10/10 | 5163 days | 1% |
| Lyn Stainton | 10/10 | 5226 days | 1% |
| John & Vicki | 8/10 | 5230 days | 1% |
| jenckes | 9/10 | 5305 days | 1% |
| Debbie Smithers | 10/10 | 5447 days | 1% |
| Julie and Russ Charles | 10/10 | 5471 days | 1% |
| Kevin Wong | 10/10 | 5471 days | 1% |
| Rocipon | 8/10 | 5472 days | 1% |
| Margit and Corein Groenevelt | 7/10 | 5475 days | 1% |
| Richard Dudfield | 10/10 | 5475 days | 1% |
| John Duffy | 10/10 | 5475 days | 1% |
| Richard Gallichan | 9/10 | 5476 days | 1% |
| Jean Barker | 8/10 | 5476 days | 1% |
| Bette Eh | 10/10 | 5478 days | 1% |
| bryfrance | 10/10 | 5479 days | 1% |
| Juliane Kleiu | 10/10 | 5479 days | 1% |
| Claudia | 8/10 | 5479 days | 1% |
| E Brockbank | 9/10 | 5480 days | 1% |
| David Mellard | 10/10 | 5481 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5481 days | 1% |
| Roland Berger | 7/10 | 5482 days | 1% |
| Ross | 9/10 | 5482 days | 1% |
| Gerstmann | 9/10 | 5483 days | 1% |
| Ekhard Wittkugel | 10/10 | 5485 days | 1% |
| Stephen Shearer | 10/10 | 5486 days | 1% |
| Monika | 10/10 | 5487 days | 1% |
| Betten | 9/10 | 5488 days | 1% |
| Stephen Jones | 9/10 | 5489 days | 1% |
| Mike and Diane Baker | 10/10 | 5490 days | 1% |
| Lenore Dejong | 10/10 | 5491 days | 1% |
| Andreas Fritesche | 8/10 | 5492 days | 1% |
| Matthys Kikke | 9/10 | 5493 days | 1% |
| Bucher Weruer | 10/10 | 5493 days | 1% |
| Camilla Andersson | 7/10 | 5494 days | 1% |
| Bob Adams | 10/10 | 5501 days | 1% |
| John | 8/10 | 5501 days | 1% |
| Katie Nicol | 10/10 | 5502 days | 1% |
| Martin Current | 9/10 | 5504 days | 1% |
| Teum and Orselien | 8/10 | 5505 days | 1% |
| Vanderhorst | 8/10 | 5505 days | 1% |
| John Price | 9/10 | 5507 days | 1% |
| Doris Schollenberger | 10/10 | 5507 days | 1% |
| Phil Hunter | 9/10 | 5508 days | 1% |
| Chris | 8/10 | 5509 days | 1% |
| Gordon Daniels | 8/10 | 5512 days | 1% |
| Hull | 9/10 | 5512 days | 1% |
| Lizzie | 10/10 | 5579 days | 1% |
| allesca | 10/10 | 5609 days | 1% |
| M Schram | 8/10 | 5772 days | 1% |
| Versteeg | 9/10 | 5775 days | 1% |
| Lomas | 10/10 | 5784 days | 1% |
| Maureen | 10/10 | 5788 days | 1% |
| Amy | 9/10 | 5793 days | 1% |
| Don & Geraldine | 10/10 | 5829 days | 1% |
| Hans and Astrid | 10/10 | 5831 days | 1% |
| Agnes | 10/10 | 5833 days | 1% |
| maggie Webster | 10/10 | 5840 days | 1% |
| Keita-Karen Buchanan | 10/10 | 5840 days | 1% |
| Lars Taarnhoej | 7/10 | 5840 days | 1% |
| markus Brandenberger | 10/10 | 5841 days | 1% |
| Jvjm Family | 9/10 | 5842 days | 1% |
| David B | 7/10 | 5849 days | 1% |
| Margaret O'Sullivan | 8/10 | 5849 days | 1% |
| Chris el capitan | 9/10 | 5859 days | 1% |
| John Cox | 9/10 | 5860 days | 1% |
| Muller Weissert | 8/10 | 5861 days | 1% |
| Brian Morris | 9/10 | 5863 days | 1% |
| Jobbs | 10/10 | 5863 days | 1% |
| Maria Newton | 9/10 | 5864 days | 1% |
| Dieter Groscurth | 8/10 | 5864 days | 1% |
| Gordon and Joyce | 9/10 | 5864 days | 1% |
| Remko Ebbens | 9/10 | 5867 days | 1% |
| Thijs Schoemaker | 8/10 | 5868 days | 1% |
| Armand | 5/10 | 5868 days | 0% |
| Ferth | 10/10 | 5868 days | 1% |
| J Kempeneers | 10/10 | 5868 days | 1% |
| Thea X | 5/10 | 5877 days | 0% |
| Keith Wilde | 10/10 | 5877 days | 1% |
| Dick Rosman | 9/10 | 5878 days | 1% |
| Terry Phillips | 5/10 | 5879 days | 0% |
| Jules | 8/10 | 5879 days | 1% |
| Carl Diehl | 9/10 | 5880 days | 1% |
| Paul Schoepfer | 9/10 | 5880 days | 1% |
| Uwe Rieper | 10/10 | 5881 days | 1% |
| Yvonne Ing | 10/10 | 5881 days | 1% |
| Diane Chapple | 9/10 | 5881 days | 1% |
| wannab | 9/10 | 5882 days | 1% |
| Kevin and Teresa | 9/10 | 5882 days | 1% |
| Christiane Lindenberg | 9/10 | 5891 days | 1% |
| Nigel Armstrong | 9/10 | 5893 days | 1% |
| Buss | 10/10 | 5895 days | 1% |
| John J | 9/10 | 5896 days | 1% |
| Heinrich Hax | 10/10 | 5902 days | 1% |
| marcusba | 8/10 | 5925 days | 1% |
| tanh | 9/10 | 5929 days | 1% |
| mariak | 7/10 | 5930 days | 1% |
| Silvana Thom | 10/10 | 5954 days | 1% |
| Wolfgang Dittrich | 10/10 | 5954 days | 1% |
| Chris Bulman | 10/10 | 5955 days | 1% |
| andyge | 8/10 | 5974 days | 1% |
| Ritag | 9/10 | 6060 days | 1% |
| regw | 10/10 | 6064 days | 1% |
| Cate | 9/10 | 6187 days | 1% |
| ginekek | 9/10 | 6188 days | 1% |
| geoffelizabeth | 9/10 | 6188 days | 1% |
| mikestep | 9/10 | 6188 days | 1% |
| EllenorO | 10/10 | 6188 days | 1% |
| Van Lent | 9/10 | 6189 days | 1% |
| Anna | 10/10 | 6189 days | 1% |
| Mike | 9/10 | 6192 days | 1% |
| Richard | 10/10 | 6197 days | 1% |
| Michael Walsall | 10/10 | 6198 days | 1% |
| AstridVG | 8/10 | 6204 days | 1% |
| Christine | 9/10 | 6204 days | 1% |
| Peter | 9/10 | 6204 days | 1% |
| DimitriD | 5/10 | 6205 days | 0% |
| Kitty | 9/10 | 6205 days | 1% |
| Max | 10/10 | 6207 days | 1% |
| Andy Baker | 9/10 | 6208 days | 1% |
| Francesca Sabat | 8/10 | 6210 days | 1% |
| Robert | 10/10 | 6218 days | 1% |
| Melissa Gillespie | 10/10 | 6219 days | 1% |
| Hetty | 9/10 | 6219 days | 1% |
| Charles | 7/10 | 6220 days | 1% |
| Byleveld | 8/10 | 6221 days | 1% |
| JoseB | 8/10 | 6222 days | 1% |
| MrHebbard | 10/10 | 6222 days | 1% |
| ChristineM | 10/10 | 6222 days | 1% |
| Elrik frau | 10/10 | 6222 days | 1% |
| Louise | 9/10 | 6228 days | 1% |
| Douglas | 9/10 | 6229 days | 1% |
| CSander | 9/10 | 6246 days | 1% |
| Patricia | 8/10 | 6256 days | 1% |
| Dijk | 8/10 | 6260 days | 1% |
| Josefine | 10/10 | 6260 days | 1% |
| Ducolq | 5/10 | 6260 days | 0% |
| Jacques | 8/10 | 6261 days | 1% |
| Carina | 8/10 | 6266 days | 1% |
| Michael | 9/10 | 6298 days | 1% |
| silvia | 8/10 | 6300 days | 1% |
| Anouk | 8/10 | 6300 days | 1% |
| Mat | 9/10 | 6305 days | 1% |
| Paul | 8/10 | 6352 days | 1% |
| Helga | 9/10 | 6362 days | 1% |
| Mikel | 9/10 | 6427 days | 1% |
| Christine | 6/10 | 6436 days | 1% |
| Jim Summers | 9/10 | 6436 days | 1% |
| Franz | 7/10 | 6559 days | 1% |
| Linda and Peter | 10/10 | 6567 days | 1% |
| Mike and Judy | 8/10 | 6568 days | 1% |
| Methers | 9/10 | 6568 days | 1% |
| Denise | 10/10 | 6571 days | 1% |
| Kavanagh | 8/10 | 6571 days | 1% |
| De Wijn | 8/10 | 6574 days | 1% |
| Lisa Jones | 9/10 | 6575 days | 1% |
| Christian | 9/10 | 6575 days | 1% |
| Soren Danning | 8/10 | 6575 days | 1% |
| Jones | 10/10 | 6579 days | 1% |
| Orla Hansen | 10/10 | 6580 days | 1% |
| Bauer | 10/10 | 6586 days | 1% |
| Aharon | 10/10 | 6586 days | 1% |
| D.A. Mulder | 9/10 | 6587 days | 1% |
| Jurg Meister | 8/10 | 6588 days | 1% |
| Sally and David Wallis | 10/10 | 6588 days | 1% |
| Knol | 9/10 | 6589 days | 1% |
| Sue Randall | 8/10 | 6592 days | 1% |
| Cole Penelope | 10/10 | 6592 days | 1% |
| Blenkoe | 6/10 | 6593 days | 1% |
| Erwin de Kleijn | 8/10 | 6593 days | 1% |
| Thomas | 9/10 | 6602 days | 1% |
| Bex | 10/10 | 6615 days | 1% |
| Van Hoof | 9/10 | 6628 days | 1% |
| Tim | 10/10 | 6628 days | 1% |
| Gabriel Faber | 9/10 | 6663 days | 1% |
| Jonkers | 9/10 | 6665 days | 1% |
| Edwin | 10/10 | 6669 days | 1% |
| Lyn Saxon | 10/10 | 6673 days | 1% |
| Wendy Williams | 10/10 | 6680 days | 1% |
| Hans Knappmann | 10/10 | 6790 days | 1% |
| Phillipa | 10/10 | 6898 days | 1% |
| Stefan&Gerte | 9/10 | 6912 days | 1% |
| Cat | 9/10 | 6918 days | 1% |
| TeamFlorida | 10/10 | 6925 days | 1% |
| Jo | 9/10 | 6925 days | 1% |
| Fenke | 9/10 | 6930 days | 1% |
| Bas | 9/10 | 6930 days | 1% |
| Martin Smith | 9/10 | 6935 days | 1% |
| John Beirne | 9/10 | 6942 days | 1% |
| Palle | 9/10 | 6947 days | 1% |
| Anna | 9/10 | 6947 days | 1% |
| Svenja | 10/10 | 6953 days | 1% |
| Shirely | 10/10 | 6953 days | 1% |
| Rogier | 8/10 | 6954 days | 1% |
| Wendy | 8/10 | 6958 days | 1% |
| Kerry | 10/10 | 6963 days | 1% |
| Henrich | 10/10 | 6963 days | 1% |
| Messing | 10/10 | 6966 days | 1% |
| Rolf Kruger | 10/10 | 6966 days | 1% |
| Ian | 8/10 | 6970 days | 1% |
| Peter | 9/10 | 6970 days | 1% |
| Brian | 10/10 | 6970 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
-0.44% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 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 22 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 19 | -0.38% |
| 20 | -0.40% |
| 21 | -0.42% |
| 22 | -0.44% |
| 23 | -0.46% |
| 24 | -0.48% |
| 25 | -0.50% |
| … | … |
Balancing Adjustment
0.80% 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.