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
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 | 1650 days | 100% |
| Joanne&Ian | 10/10 | 1742 days | 80% |
| Geoff Steele | 8/10 | 3019 days | 38% |
| Axel and Patricia G | 6/10 | 3207 days | 29% |
| Leonie Westerhot | 8/10 | 3279 days | 31% |
| Ivanova R | 9/10 | 3536 days | 24% |
| Lorenz Pfisterer | 10/10 | 3548 days | 24% |
| Heidi et Mat | 8/10 | 3557 days | 23% |
| Anke Vater | 10/10 | 3558 days | 24% |
| Anouk Jongsma | 9/10 | 3566 days | 23% |
| Robin WUERFEL | 9/10 | 3638 days | 21% |
| Helen Parsons | 10/10 | 3958 days | 12% |
| Peter Beeloo | 9/10 | 3962 days | 12% |
| Laurent Arditi | 9/10 | 4146 days | 6% |
| Sheila Galpin | 9/10 | 4297 days | 2% |
| Simon Galpin | 9/10 | 4297 days | 2% |
| Douglas Dean | 10/10 | 4299 days | 2% |
| Stina Hultberg | 4/10 | 4303 days | 1% |
| Alexander Zimmer | 7/10 | 4304 days | 2% |
| Linus Larsson | 3/10 | 4305 days | 1% |
| Leon Courtney | 10/10 | 4306 days | 2% |
| Libby | 10/10 | 4320 days | 1% |
| Colin Billington | 7/10 | 4321 days | 1% |
| Don Wallis | 10/10 | 4324 days | 1% |
| Bill | 7/10 | 4325 days | 1% |
| Saskia | 5/10 | 4325 days | 1% |
| Terry Seaman | 8/10 | 4327 days | 1% |
| S B | 10/10 | 4340 days | 1% |
| M K | 10/10 | 4340 days | 1% |
| Alacchi Moustier | 10/10 | 4340 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4348 days | 1% |
| Stuart Wilson | 8/10 | 4354 days | 0% |
| Fabian Lee | 5/10 | 4357 days | 0% |
| paul beacock | 10/10 | 4358 days | 0% |
| Gal Bero | 10/10 | 4361 days | 0% |
| Elly Zimmer | 6/10 | 4365 days | 0% |
| Bjorn Van Mulders | 10/10 | 4368 days | 0% |
| Kim Maertens | 9/10 | 4368 days | 0% |
| Steve Warren | 10/10 | 4480 days | 15% |
| hendrik king | 7/10 | 4572 days | 13% |
| Peter Jolliffe | 10/10 | 4664 days | 15% |
| Helen Dean | 10/10 | 4664 days | 15% |
| Dave Mertzig | 10/10 | 4664 days | 15% |
| Kathryn Pisco | 9/10 | 4670 days | 14% |
| Mike Pisco | 9/10 | 4670 days | 14% |
| Sebastian and Peter Beate | 10/10 | 4687 days | 15% |
| Fraser Goldsmith | 8/10 | 4688 days | 14% |
| Bucher | 9/10 | 4739 days | 14% |
| Marieke | 8/10 | 4740 days | 14% |
| Chew (Peter) | 7/10 | 4745 days | 13% |
| Natalie Nubler | 6/10 | 4746 days | 12% |
| Frans Derks | 9/10 | 4747 days | 14% |
| Meryem Buchwitz | 9/10 | 4767 days | 14% |
| roos wubben | 9/10 | 4770 days | 14% |
| Dagette | 9/10 | 4815 days | 14% |
| Teri C | 10/10 | 4845 days | 15% |
| Rob Klauer | 5/10 | 5017 days | 11% |
| Oliver Hardt | 9/10 | 5018 days | 14% |
| Val Phillips | 8/10 | 5022 days | 14% |
| Peter Adams | 9/10 | 5023 days | 14% |
| Harry Ruys | 8/10 | 5025 days | 14% |
| John McAllister | 9/10 | 5026 days | 14% |
| Keith Helen | 10/10 | 5029 days | 15% |
| Daniel Patricia | 9/10 | 5032 days | 14% |
| Laura Diepeveen | 8/10 | 5034 days | 14% |
| Fries | 10/10 | 5038 days | 15% |
| Karin Laurev | 10/10 | 5038 days | 15% |
| Gillian Rowe | 9/10 | 5039 days | 14% |
| Nigel Horrocks | 7/10 | 5039 days | 13% |
| Dieter Mangold | 10/10 | 5041 days | 15% |
| Lyn Deavin | 8/10 | 5041 days | 14% |
| Sabine & Stefan | 10/10 | 5042 days | 15% |
| Randewyk | 8/10 | 5042 days | 14% |
| Koster | 6/10 | 5044 days | 12% |
| Peter Aertssen | 7/10 | 5044 days | 13% |
| John A Jerome | 8/10 | 5044 days | 14% |
| Lynn Robinson | 10/10 | 5050 days | 15% |
| Heike | 9/10 | 5053 days | 14% |
| Robert MacLeod-Smith | 8/10 | 5054 days | 14% |
| Carel | 8/10 | 5055 days | 14% |
| Anna | 9/10 | 5056 days | 14% |
| Barrie Corless | 9/10 | 5057 days | 14% |
| Urban Reifler | 10/10 | 5069 days | 15% |
| Lyn Stainton | 10/10 | 5132 days | 15% |
| John & Vicki | 8/10 | 5136 days | 14% |
| jenckes | 9/10 | 5211 days | 14% |
| Debbie Smithers | 10/10 | 5353 days | 15% |
| Julie and Russ Charles | 10/10 | 5377 days | 15% |
| Kevin Wong | 10/10 | 5377 days | 15% |
| Rocipon | 8/10 | 5378 days | 14% |
| Margit and Corein Groenevelt | 7/10 | 5381 days | 13% |
| Richard Dudfield | 10/10 | 5381 days | 15% |
| John Duffy | 10/10 | 5381 days | 15% |
| Richard Gallichan | 9/10 | 5382 days | 14% |
| Jean Barker | 8/10 | 5382 days | 14% |
| Bette Eh | 10/10 | 5384 days | 15% |
| bryfrance | 10/10 | 5385 days | 15% |
| Juliane Kleiu | 10/10 | 5385 days | 15% |
| Claudia | 8/10 | 5385 days | 14% |
| E Brockbank | 9/10 | 5386 days | 14% |
| David Mellard | 10/10 | 5387 days | 15% |
| Bruce & Elaine Chote | 10/10 | 5387 days | 15% |
| Roland Berger | 7/10 | 5388 days | 13% |
| Ross | 9/10 | 5388 days | 14% |
| Gerstmann | 9/10 | 5389 days | 14% |
| Ekhard Wittkugel | 10/10 | 5391 days | 15% |
| Stephen Shearer | 10/10 | 5392 days | 15% |
| Monika | 10/10 | 5393 days | 15% |
| Betten | 9/10 | 5394 days | 14% |
| Stephen Jones | 9/10 | 5395 days | 14% |
| Mike and Diane Baker | 10/10 | 5396 days | 15% |
| Lenore Dejong | 10/10 | 5397 days | 15% |
| Andreas Fritesche | 8/10 | 5398 days | 14% |
| Matthys Kikke | 9/10 | 5399 days | 14% |
| Bucher Weruer | 10/10 | 5399 days | 15% |
| Camilla Andersson | 7/10 | 5400 days | 13% |
| Bob Adams | 10/10 | 5407 days | 15% |
| John | 8/10 | 5407 days | 14% |
| Katie Nicol | 10/10 | 5408 days | 15% |
| Martin Current | 9/10 | 5410 days | 14% |
| Teum and Orselien | 8/10 | 5411 days | 14% |
| Vanderhorst | 8/10 | 5411 days | 14% |
| John Price | 9/10 | 5413 days | 14% |
| Doris Schollenberger | 10/10 | 5413 days | 15% |
| Phil Hunter | 9/10 | 5414 days | 14% |
| Chris | 8/10 | 5415 days | 14% |
| Gordon Daniels | 8/10 | 5418 days | 14% |
| Hull | 9/10 | 5418 days | 14% |
| Lizzie | 10/10 | 5485 days | 15% |
| allesca | 10/10 | 5515 days | 15% |
| M Schram | 8/10 | 5678 days | 14% |
| Versteeg | 9/10 | 5681 days | 14% |
| Lomas | 10/10 | 5690 days | 15% |
| Maureen | 10/10 | 5694 days | 15% |
| Amy | 9/10 | 5699 days | 14% |
| Don & Geraldine | 10/10 | 5735 days | 15% |
| Hans and Astrid | 10/10 | 5737 days | 15% |
| Agnes | 10/10 | 5739 days | 15% |
| maggie Webster | 10/10 | 5746 days | 15% |
| Keita-Karen Buchanan | 10/10 | 5746 days | 15% |
| Lars Taarnhoej | 7/10 | 5746 days | 13% |
| markus Brandenberger | 10/10 | 5747 days | 15% |
| Jvjm Family | 9/10 | 5748 days | 14% |
| David B | 7/10 | 5755 days | 13% |
| Margaret O'Sullivan | 8/10 | 5755 days | 14% |
| Chris el capitan | 9/10 | 5765 days | 14% |
| John Cox | 9/10 | 5766 days | 14% |
| Muller Weissert | 8/10 | 5767 days | 14% |
| Brian Morris | 9/10 | 5769 days | 14% |
| Jobbs | 10/10 | 5769 days | 15% |
| Maria Newton | 9/10 | 5770 days | 14% |
| Dieter Groscurth | 8/10 | 5770 days | 14% |
| Gordon and Joyce | 9/10 | 5770 days | 14% |
| Remko Ebbens | 9/10 | 5773 days | 14% |
| Thijs Schoemaker | 8/10 | 5774 days | 14% |
| Armand | 5/10 | 5774 days | 11% |
| Ferth | 10/10 | 5774 days | 15% |
| J Kempeneers | 10/10 | 5774 days | 15% |
| Thea X | 5/10 | 5783 days | 11% |
| Keith Wilde | 10/10 | 5783 days | 15% |
| Dick Rosman | 9/10 | 5784 days | 14% |
| Terry Phillips | 5/10 | 5785 days | 11% |
| Jules | 8/10 | 5785 days | 14% |
| Carl Diehl | 9/10 | 5786 days | 14% |
| Paul Schoepfer | 9/10 | 5786 days | 14% |
| Uwe Rieper | 10/10 | 5787 days | 15% |
| Yvonne Ing | 10/10 | 5787 days | 15% |
| Diane Chapple | 9/10 | 5787 days | 14% |
| wannab | 9/10 | 5788 days | 14% |
| Kevin and Teresa | 9/10 | 5788 days | 14% |
| Christiane Lindenberg | 9/10 | 5797 days | 14% |
| Nigel Armstrong | 9/10 | 5799 days | 14% |
| Buss | 10/10 | 5801 days | 15% |
| John J | 9/10 | 5802 days | 14% |
| Heinrich Hax | 10/10 | 5808 days | 15% |
| marcusba | 8/10 | 5831 days | 14% |
| tanh | 9/10 | 5835 days | 14% |
| mariak | 7/10 | 5836 days | 13% |
| Silvana Thom | 10/10 | 5860 days | 15% |
| Wolfgang Dittrich | 10/10 | 5860 days | 15% |
| Chris Bulman | 10/10 | 5861 days | 15% |
| andyge | 8/10 | 5880 days | 14% |
| Ritag | 9/10 | 5966 days | 14% |
| regw | 10/10 | 5970 days | 15% |
| Cate | 9/10 | 6094 days | 14% |
| ginekek | 9/10 | 6094 days | 14% |
| geoffelizabeth | 9/10 | 6094 days | 14% |
| mikestep | 9/10 | 6094 days | 14% |
| EllenorO | 10/10 | 6095 days | 15% |
| Van Lent | 9/10 | 6096 days | 14% |
| Anna | 10/10 | 6096 days | 15% |
| Mike | 9/10 | 6099 days | 14% |
| Richard | 10/10 | 6104 days | 15% |
| Michael Walsall | 10/10 | 6104 days | 15% |
| AstridVG | 8/10 | 6111 days | 14% |
| Christine | 9/10 | 6111 days | 14% |
| Peter | 9/10 | 6111 days | 14% |
| DimitriD | 5/10 | 6111 days | 11% |
| Kitty | 9/10 | 6111 days | 14% |
| Max | 10/10 | 6114 days | 15% |
| Andy Baker | 9/10 | 6114 days | 14% |
| Francesca Sabat | 8/10 | 6116 days | 14% |
| Robert | 10/10 | 6125 days | 15% |
| Melissa Gillespie | 10/10 | 6125 days | 15% |
| Hetty | 9/10 | 6126 days | 14% |
| Charles | 7/10 | 6127 days | 13% |
| Byleveld | 8/10 | 6127 days | 14% |
| JoseB | 8/10 | 6128 days | 14% |
| MrHebbard | 10/10 | 6128 days | 15% |
| ChristineM | 10/10 | 6128 days | 15% |
| Elrik frau | 10/10 | 6128 days | 15% |
| Louise | 9/10 | 6135 days | 14% |
| Douglas | 9/10 | 6136 days | 14% |
| CSander | 9/10 | 6152 days | 14% |
| Patricia | 8/10 | 6163 days | 14% |
| Dijk | 8/10 | 6167 days | 14% |
| Josefine | 10/10 | 6167 days | 15% |
| Ducolq | 5/10 | 6167 days | 11% |
| Jacques | 8/10 | 6168 days | 14% |
| Carina | 8/10 | 6173 days | 14% |
| Michael | 9/10 | 6204 days | 14% |
| silvia | 8/10 | 6207 days | 14% |
| Anouk | 8/10 | 6207 days | 14% |
| Mat | 9/10 | 6212 days | 14% |
| Paul | 8/10 | 6258 days | 14% |
| Helga | 9/10 | 6269 days | 14% |
| Mikel | 9/10 | 6334 days | 14% |
| Christine | 6/10 | 6343 days | 12% |
| Jim Summers | 9/10 | 6343 days | 14% |
| Franz | 7/10 | 6465 days | 13% |
| Linda and Peter | 10/10 | 6473 days | 15% |
| Mike and Judy | 8/10 | 6474 days | 14% |
| Methers | 9/10 | 6474 days | 14% |
| Denise | 10/10 | 6477 days | 15% |
| Kavanagh | 8/10 | 6477 days | 14% |
| De Wijn | 8/10 | 6480 days | 14% |
| Lisa Jones | 9/10 | 6481 days | 14% |
| Christian | 9/10 | 6481 days | 14% |
| Soren Danning | 8/10 | 6481 days | 14% |
| Jones | 10/10 | 6485 days | 15% |
| Orla Hansen | 10/10 | 6486 days | 15% |
| Bauer | 10/10 | 6492 days | 15% |
| Aharon | 10/10 | 6492 days | 15% |
| D.A. Mulder | 9/10 | 6493 days | 14% |
| Jurg Meister | 8/10 | 6494 days | 14% |
| Sally and David Wallis | 10/10 | 6494 days | 15% |
| Knol | 9/10 | 6495 days | 14% |
| Sue Randall | 8/10 | 6498 days | 14% |
| Cole Penelope | 10/10 | 6498 days | 15% |
| Blenkoe | 6/10 | 6499 days | 12% |
| Erwin de Kleijn | 8/10 | 6499 days | 14% |
| Thomas | 9/10 | 6508 days | 14% |
| Bex | 10/10 | 6522 days | 15% |
| Van Hoof | 9/10 | 6534 days | 14% |
| Tim | 10/10 | 6534 days | 15% |
| Gabriel Faber | 9/10 | 6569 days | 14% |
| Jonkers | 9/10 | 6571 days | 14% |
| Edwin | 10/10 | 6575 days | 15% |
| Lyn Saxon | 10/10 | 6579 days | 15% |
| Wendy Williams | 10/10 | 6586 days | 15% |
| Hans Knappmann | 10/10 | 6696 days | 15% |
| Phillipa | 10/10 | 6804 days | 15% |
| Stefan&Gerte | 9/10 | 6818 days | 14% |
| Cat | 9/10 | 6824 days | 14% |
| TeamFlorida | 10/10 | 6831 days | 15% |
| Jo | 9/10 | 6831 days | 14% |
| Fenke | 9/10 | 6836 days | 14% |
| Bas | 9/10 | 6836 days | 14% |
| Martin Smith | 9/10 | 6841 days | 14% |
| John Beirne | 9/10 | 6848 days | 14% |
| Palle | 9/10 | 6853 days | 14% |
| Anna | 9/10 | 6853 days | 14% |
| Svenja | 10/10 | 6859 days | 15% |
| Shirely | 10/10 | 6859 days | 15% |
| Rogier | 8/10 | 6860 days | 14% |
| Wendy | 8/10 | 6864 days | 14% |
| Kerry | 10/10 | 6869 days | 15% |
| Henrich | 10/10 | 6869 days | 15% |
| Messing | 10/10 | 6872 days | 15% |
| Rolf Kruger | 10/10 | 6872 days | 15% |
| Ian | 8/10 | 6876 days | 14% |
| Peter | 9/10 | 6876 days | 14% |
| Brian | 10/10 | 6876 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
-4.07% 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
1.70% 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.