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
89.81%
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 | 1479 days | 100% |
| Joanne&Ian | 10/10 | 1571 days | 73% |
| Geoff Steele | 8/10 | 2847 days | 24% |
| Axel and Patricia G | 6/10 | 3036 days | 18% |
| Leonie Westerhot | 8/10 | 3108 days | 20% |
| Ivanova R | 9/10 | 3365 days | 16% |
| Lorenz Pfisterer | 10/10 | 3377 days | 16% |
| Heidi et Mat | 8/10 | 3386 days | 15% |
| Anke Vater | 10/10 | 3387 days | 15% |
| Anouk Jongsma | 9/10 | 3395 days | 15% |
| Robin WUERFEL | 9/10 | 3467 days | 14% |
| Helen Parsons | 10/10 | 3787 days | 9% |
| Peter Beeloo | 9/10 | 3790 days | 9% |
| Laurent Arditi | 9/10 | 3975 days | 6% |
| Sheila Galpin | 9/10 | 4126 days | 3% |
| Simon Galpin | 9/10 | 4126 days | 3% |
| Douglas Dean | 10/10 | 4128 days | 3% |
| Stina Hultberg | 4/10 | 4132 days | 2% |
| Alexander Zimmer | 7/10 | 4133 days | 3% |
| Linus Larsson | 3/10 | 4134 days | 1% |
| Leon Courtney | 10/10 | 4135 days | 3% |
| Libby | 10/10 | 4149 days | 3% |
| Colin Billington | 7/10 | 4150 days | 2% |
| Don Wallis | 10/10 | 4153 days | 3% |
| Bill | 7/10 | 4154 days | 2% |
| Saskia | 5/10 | 4154 days | 2% |
| Terry Seaman | 8/10 | 4156 days | 2% |
| S B | 10/10 | 4169 days | 2% |
| M K | 10/10 | 4169 days | 2% |
| Alacchi Moustier | 10/10 | 4169 days | 2% |
| Maya Bakker-deDreu | 8/10 | 4177 days | 2% |
| Stuart Wilson | 8/10 | 4183 days | 2% |
| Fabian Lee | 5/10 | 4186 days | 1% |
| paul beacock | 10/10 | 4187 days | 2% |
| Gal Bero | 10/10 | 4190 days | 2% |
| Elly Zimmer | 6/10 | 4194 days | 1% |
| Bjorn Van Mulders | 10/10 | 4197 days | 2% |
| Kim Maertens | 9/10 | 4197 days | 2% |
| Steve Warren | 10/10 | 4309 days | 0% |
| hendrik king | 7/10 | 4401 days | 7% |
| Peter Jolliffe | 10/10 | 4493 days | 7% |
| Helen Dean | 10/10 | 4493 days | 7% |
| Dave Mertzig | 10/10 | 4493 days | 7% |
| Kathryn Pisco | 9/10 | 4499 days | 7% |
| Mike Pisco | 9/10 | 4499 days | 7% |
| Sebastian and Peter Beate | 10/10 | 4516 days | 7% |
| Fraser Goldsmith | 8/10 | 4517 days | 7% |
| Bucher | 9/10 | 4568 days | 7% |
| Marieke | 8/10 | 4569 days | 7% |
| Chew (Peter) | 7/10 | 4574 days | 7% |
| Natalie Nubler | 6/10 | 4575 days | 6% |
| Frans Derks | 9/10 | 4576 days | 7% |
| Meryem Buchwitz | 9/10 | 4596 days | 7% |
| roos wubben | 9/10 | 4599 days | 7% |
| Dagette | 9/10 | 4644 days | 7% |
| Teri C | 10/10 | 4674 days | 7% |
| Rob Klauer | 5/10 | 4846 days | 5% |
| Oliver Hardt | 9/10 | 4847 days | 7% |
| Val Phillips | 8/10 | 4851 days | 7% |
| Peter Adams | 9/10 | 4852 days | 7% |
| Harry Ruys | 8/10 | 4854 days | 7% |
| John McAllister | 9/10 | 4855 days | 7% |
| Keith Helen | 10/10 | 4858 days | 7% |
| Daniel Patricia | 9/10 | 4861 days | 7% |
| Laura Diepeveen | 8/10 | 4863 days | 7% |
| Fries | 10/10 | 4867 days | 7% |
| Karin Laurev | 10/10 | 4867 days | 7% |
| Gillian Rowe | 9/10 | 4868 days | 7% |
| Nigel Horrocks | 7/10 | 4868 days | 7% |
| Dieter Mangold | 10/10 | 4870 days | 7% |
| Lyn Deavin | 8/10 | 4870 days | 7% |
| Sabine & Stefan | 10/10 | 4871 days | 7% |
| Randewyk | 8/10 | 4871 days | 7% |
| Koster | 6/10 | 4873 days | 6% |
| Peter Aertssen | 7/10 | 4873 days | 7% |
| John A Jerome | 8/10 | 4873 days | 7% |
| Lynn Robinson | 10/10 | 4879 days | 7% |
| Heike | 9/10 | 4882 days | 7% |
| Robert MacLeod-Smith | 8/10 | 4883 days | 7% |
| Carel | 8/10 | 4884 days | 7% |
| Anna | 9/10 | 4885 days | 7% |
| Barrie Corless | 9/10 | 4886 days | 7% |
| Urban Reifler | 10/10 | 4898 days | 7% |
| Lyn Stainton | 10/10 | 4961 days | 7% |
| John & Vicki | 8/10 | 4965 days | 7% |
| jenckes | 9/10 | 5040 days | 7% |
| Debbie Smithers | 10/10 | 5182 days | 7% |
| Julie and Russ Charles | 10/10 | 5206 days | 7% |
| Kevin Wong | 10/10 | 5206 days | 7% |
| Rocipon | 8/10 | 5207 days | 7% |
| Margit and Corein Groenevelt | 7/10 | 5210 days | 7% |
| Richard Dudfield | 10/10 | 5210 days | 7% |
| John Duffy | 10/10 | 5210 days | 7% |
| Richard Gallichan | 9/10 | 5211 days | 7% |
| Jean Barker | 8/10 | 5211 days | 7% |
| Bette Eh | 10/10 | 5213 days | 7% |
| bryfrance | 10/10 | 5214 days | 7% |
| Juliane Kleiu | 10/10 | 5214 days | 7% |
| Claudia | 8/10 | 5214 days | 7% |
| E Brockbank | 9/10 | 5215 days | 7% |
| David Mellard | 10/10 | 5216 days | 7% |
| Bruce & Elaine Chote | 10/10 | 5216 days | 7% |
| Roland Berger | 7/10 | 5217 days | 7% |
| Ross | 9/10 | 5217 days | 7% |
| Gerstmann | 9/10 | 5218 days | 7% |
| Ekhard Wittkugel | 10/10 | 5220 days | 7% |
| Stephen Shearer | 10/10 | 5221 days | 7% |
| Monika | 10/10 | 5222 days | 7% |
| Betten | 9/10 | 5223 days | 7% |
| Stephen Jones | 9/10 | 5224 days | 7% |
| Mike and Diane Baker | 10/10 | 5225 days | 7% |
| Lenore Dejong | 10/10 | 5226 days | 7% |
| Andreas Fritesche | 8/10 | 5227 days | 7% |
| Matthys Kikke | 9/10 | 5228 days | 7% |
| Bucher Weruer | 10/10 | 5228 days | 7% |
| Camilla Andersson | 7/10 | 5229 days | 7% |
| Bob Adams | 10/10 | 5236 days | 7% |
| John | 8/10 | 5236 days | 7% |
| Katie Nicol | 10/10 | 5237 days | 7% |
| Martin Current | 9/10 | 5239 days | 7% |
| Teum and Orselien | 8/10 | 5240 days | 7% |
| Vanderhorst | 8/10 | 5240 days | 7% |
| John Price | 9/10 | 5242 days | 7% |
| Doris Schollenberger | 10/10 | 5242 days | 7% |
| Phil Hunter | 9/10 | 5243 days | 7% |
| Chris | 8/10 | 5244 days | 7% |
| Gordon Daniels | 8/10 | 5247 days | 7% |
| Hull | 9/10 | 5247 days | 7% |
| Lizzie | 10/10 | 5314 days | 7% |
| allesca | 10/10 | 5344 days | 7% |
| M Schram | 8/10 | 5507 days | 7% |
| Versteeg | 9/10 | 5510 days | 7% |
| Lomas | 10/10 | 5519 days | 7% |
| Maureen | 10/10 | 5523 days | 7% |
| Amy | 9/10 | 5528 days | 7% |
| Don & Geraldine | 10/10 | 5564 days | 7% |
| Hans and Astrid | 10/10 | 5566 days | 7% |
| Agnes | 10/10 | 5568 days | 7% |
| maggie Webster | 10/10 | 5575 days | 7% |
| Keita-Karen Buchanan | 10/10 | 5575 days | 7% |
| Lars Taarnhoej | 7/10 | 5575 days | 7% |
| markus Brandenberger | 10/10 | 5576 days | 7% |
| Jvjm Family | 9/10 | 5577 days | 7% |
| David B | 7/10 | 5584 days | 7% |
| Margaret O'Sullivan | 8/10 | 5584 days | 7% |
| Chris el capitan | 9/10 | 5594 days | 7% |
| John Cox | 9/10 | 5595 days | 7% |
| Muller Weissert | 8/10 | 5596 days | 7% |
| Brian Morris | 9/10 | 5598 days | 7% |
| Jobbs | 10/10 | 5598 days | 7% |
| Maria Newton | 9/10 | 5599 days | 7% |
| Dieter Groscurth | 8/10 | 5599 days | 7% |
| Gordon and Joyce | 9/10 | 5599 days | 7% |
| Remko Ebbens | 9/10 | 5602 days | 7% |
| Thijs Schoemaker | 8/10 | 5603 days | 7% |
| Armand | 5/10 | 5603 days | 5% |
| Ferth | 10/10 | 5603 days | 7% |
| J Kempeneers | 10/10 | 5603 days | 7% |
| Thea X | 5/10 | 5612 days | 5% |
| Keith Wilde | 10/10 | 5612 days | 7% |
| Dick Rosman | 9/10 | 5613 days | 7% |
| Terry Phillips | 5/10 | 5614 days | 5% |
| Jules | 8/10 | 5614 days | 7% |
| Carl Diehl | 9/10 | 5615 days | 7% |
| Paul Schoepfer | 9/10 | 5615 days | 7% |
| Uwe Rieper | 10/10 | 5616 days | 7% |
| Yvonne Ing | 10/10 | 5616 days | 7% |
| Diane Chapple | 9/10 | 5616 days | 7% |
| wannab | 9/10 | 5617 days | 7% |
| Kevin and Teresa | 9/10 | 5617 days | 7% |
| Christiane Lindenberg | 9/10 | 5626 days | 7% |
| Nigel Armstrong | 9/10 | 5628 days | 7% |
| Buss | 10/10 | 5630 days | 7% |
| John J | 9/10 | 5631 days | 7% |
| Heinrich Hax | 10/10 | 5637 days | 7% |
| marcusba | 8/10 | 5660 days | 7% |
| tanh | 9/10 | 5664 days | 7% |
| mariak | 7/10 | 5665 days | 7% |
| Silvana Thom | 10/10 | 5689 days | 7% |
| Wolfgang Dittrich | 10/10 | 5689 days | 7% |
| Chris Bulman | 10/10 | 5690 days | 7% |
| andyge | 8/10 | 5709 days | 7% |
| Ritag | 9/10 | 5795 days | 7% |
| regw | 10/10 | 5799 days | 7% |
| Cate | 9/10 | 5922 days | 7% |
| ginekek | 9/10 | 5923 days | 7% |
| geoffelizabeth | 9/10 | 5923 days | 7% |
| mikestep | 9/10 | 5923 days | 7% |
| EllenorO | 10/10 | 5923 days | 7% |
| Van Lent | 9/10 | 5924 days | 7% |
| Anna | 10/10 | 5925 days | 7% |
| Mike | 9/10 | 5927 days | 7% |
| Richard | 10/10 | 5932 days | 7% |
| Michael Walsall | 10/10 | 5933 days | 7% |
| AstridVG | 8/10 | 5939 days | 7% |
| Christine | 9/10 | 5939 days | 7% |
| Peter | 9/10 | 5939 days | 7% |
| DimitriD | 5/10 | 5940 days | 5% |
| Kitty | 9/10 | 5940 days | 7% |
| Max | 10/10 | 5942 days | 7% |
| Andy Baker | 9/10 | 5943 days | 7% |
| Francesca Sabat | 8/10 | 5945 days | 7% |
| Robert | 10/10 | 5953 days | 7% |
| Melissa Gillespie | 10/10 | 5954 days | 7% |
| Hetty | 9/10 | 5954 days | 7% |
| Charles | 7/10 | 5955 days | 7% |
| Byleveld | 8/10 | 5956 days | 7% |
| JoseB | 8/10 | 5957 days | 7% |
| MrHebbard | 10/10 | 5957 days | 7% |
| ChristineM | 10/10 | 5957 days | 7% |
| Elrik frau | 10/10 | 5957 days | 7% |
| Louise | 9/10 | 5963 days | 7% |
| Douglas | 9/10 | 5964 days | 7% |
| CSander | 9/10 | 5981 days | 7% |
| Patricia | 8/10 | 5991 days | 7% |
| Dijk | 8/10 | 5995 days | 7% |
| Josefine | 10/10 | 5995 days | 7% |
| Ducolq | 5/10 | 5995 days | 5% |
| Jacques | 8/10 | 5996 days | 7% |
| Carina | 8/10 | 6001 days | 7% |
| Michael | 9/10 | 6033 days | 7% |
| silvia | 8/10 | 6035 days | 7% |
| Anouk | 8/10 | 6035 days | 7% |
| Mat | 9/10 | 6040 days | 7% |
| Paul | 8/10 | 6087 days | 7% |
| Helga | 9/10 | 6097 days | 7% |
| Mikel | 9/10 | 6162 days | 7% |
| Christine | 6/10 | 6171 days | 6% |
| Jim Summers | 9/10 | 6171 days | 7% |
| Franz | 7/10 | 6294 days | 7% |
| Linda and Peter | 10/10 | 6302 days | 7% |
| Mike and Judy | 8/10 | 6303 days | 7% |
| Methers | 9/10 | 6303 days | 7% |
| Denise | 10/10 | 6306 days | 7% |
| Kavanagh | 8/10 | 6306 days | 7% |
| De Wijn | 8/10 | 6309 days | 7% |
| Lisa Jones | 9/10 | 6310 days | 7% |
| Christian | 9/10 | 6310 days | 7% |
| Soren Danning | 8/10 | 6310 days | 7% |
| Jones | 10/10 | 6314 days | 7% |
| Orla Hansen | 10/10 | 6315 days | 7% |
| Bauer | 10/10 | 6321 days | 7% |
| Aharon | 10/10 | 6321 days | 7% |
| D.A. Mulder | 9/10 | 6322 days | 7% |
| Jurg Meister | 8/10 | 6323 days | 7% |
| Sally and David Wallis | 10/10 | 6323 days | 7% |
| Knol | 9/10 | 6324 days | 7% |
| Sue Randall | 8/10 | 6327 days | 7% |
| Cole Penelope | 10/10 | 6327 days | 7% |
| Blenkoe | 6/10 | 6328 days | 6% |
| Erwin de Kleijn | 8/10 | 6328 days | 7% |
| Thomas | 9/10 | 6337 days | 7% |
| Bex | 10/10 | 6350 days | 7% |
| Van Hoof | 9/10 | 6363 days | 7% |
| Tim | 10/10 | 6363 days | 7% |
| Gabriel Faber | 9/10 | 6398 days | 7% |
| Jonkers | 9/10 | 6400 days | 7% |
| Edwin | 10/10 | 6404 days | 7% |
| Lyn Saxon | 10/10 | 6408 days | 7% |
| Wendy Williams | 10/10 | 6415 days | 7% |
| Hans Knappmann | 10/10 | 6525 days | 7% |
| Phillipa | 10/10 | 6633 days | 7% |
| Stefan&Gerte | 9/10 | 6647 days | 7% |
| Cat | 9/10 | 6653 days | 7% |
| TeamFlorida | 10/10 | 6660 days | 7% |
| Jo | 9/10 | 6660 days | 7% |
| Fenke | 9/10 | 6665 days | 7% |
| Bas | 9/10 | 6665 days | 7% |
| Martin Smith | 9/10 | 6670 days | 7% |
| John Beirne | 9/10 | 6677 days | 7% |
| Palle | 9/10 | 6682 days | 7% |
| Anna | 9/10 | 6682 days | 7% |
| Svenja | 10/10 | 6688 days | 7% |
| Shirely | 10/10 | 6688 days | 7% |
| Rogier | 8/10 | 6689 days | 7% |
| Wendy | 8/10 | 6693 days | 7% |
| Kerry | 10/10 | 6698 days | 7% |
| Henrich | 10/10 | 6698 days | 7% |
| Messing | 10/10 | 6701 days | 7% |
| Rolf Kruger | 10/10 | 6701 days | 7% |
| Ian | 8/10 | 6705 days | 7% |
| Peter | 9/10 | 6705 days | 7% |
| Brian | 10/10 | 6705 days | 7% |
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
-2.16% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 118 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 | -2.13% |
| 198 | -2.14% |
| 199 | -2.15% |
| 200 | -2.16% |
| 201 | -2.17% |
| 202 | -2.19% |
| 203 | -2.20% |
| … | … |
Balancing Adjustment
1.35% 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
89%
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.