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 | 1659 days | 100% |
| Joanne&Ian | 10/10 | 1751 days | 81% |
| Geoff Steele | 8/10 | 3027 days | 39% |
| Axel and Patricia G | 6/10 | 3216 days | 30% |
| Leonie Westerhot | 8/10 | 3288 days | 32% |
| Ivanova R | 9/10 | 3545 days | 25% |
| Lorenz Pfisterer | 10/10 | 3557 days | 24% |
| Heidi et Mat | 8/10 | 3566 days | 24% |
| Anke Vater | 10/10 | 3567 days | 24% |
| Anouk Jongsma | 9/10 | 3575 days | 24% |
| Robin WUERFEL | 9/10 | 3647 days | 22% |
| Helen Parsons | 10/10 | 3967 days | 12% |
| Peter Beeloo | 9/10 | 3970 days | 12% |
| Laurent Arditi | 9/10 | 4155 days | 7% |
| Sheila Galpin | 9/10 | 4306 days | 2% |
| Simon Galpin | 9/10 | 4306 days | 2% |
| Douglas Dean | 10/10 | 4308 days | 2% |
| Stina Hultberg | 4/10 | 4312 days | 1% |
| Alexander Zimmer | 7/10 | 4313 days | 2% |
| Linus Larsson | 3/10 | 4314 days | 1% |
| Leon Courtney | 10/10 | 4315 days | 2% |
| Libby | 10/10 | 4329 days | 1% |
| Colin Billington | 7/10 | 4330 days | 1% |
| Don Wallis | 10/10 | 4333 days | 1% |
| Bill | 7/10 | 4334 days | 1% |
| Saskia | 5/10 | 4334 days | 1% |
| Terry Seaman | 8/10 | 4336 days | 1% |
| S B | 10/10 | 4349 days | 1% |
| M K | 10/10 | 4349 days | 1% |
| Alacchi Moustier | 10/10 | 4349 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4357 days | 1% |
| Stuart Wilson | 8/10 | 4363 days | 0% |
| Fabian Lee | 5/10 | 4366 days | 0% |
| paul beacock | 10/10 | 4367 days | 0% |
| Gal Bero | 10/10 | 4370 days | 0% |
| Elly Zimmer | 6/10 | 4374 days | 0% |
| Bjorn Van Mulders | 10/10 | 4377 days | 0% |
| Kim Maertens | 9/10 | 4377 days | 0% |
| Steve Warren | 10/10 | 4489 days | 15% |
| hendrik king | 7/10 | 4581 days | 14% |
| Peter Jolliffe | 10/10 | 4673 days | 15% |
| Helen Dean | 10/10 | 4673 days | 15% |
| Dave Mertzig | 10/10 | 4673 days | 15% |
| Kathryn Pisco | 9/10 | 4679 days | 15% |
| Mike Pisco | 9/10 | 4679 days | 15% |
| Sebastian and Peter Beate | 10/10 | 4696 days | 15% |
| Fraser Goldsmith | 8/10 | 4697 days | 15% |
| Bucher | 9/10 | 4748 days | 15% |
| Marieke | 8/10 | 4749 days | 15% |
| Chew (Peter) | 7/10 | 4754 days | 14% |
| Natalie Nubler | 6/10 | 4755 days | 13% |
| Frans Derks | 9/10 | 4756 days | 15% |
| Meryem Buchwitz | 9/10 | 4776 days | 15% |
| roos wubben | 9/10 | 4779 days | 15% |
| Dagette | 9/10 | 4824 days | 15% |
| Teri C | 10/10 | 4854 days | 15% |
| Rob Klauer | 5/10 | 5026 days | 12% |
| Oliver Hardt | 9/10 | 5027 days | 15% |
| Val Phillips | 8/10 | 5031 days | 15% |
| Peter Adams | 9/10 | 5032 days | 15% |
| Harry Ruys | 8/10 | 5034 days | 15% |
| John McAllister | 9/10 | 5035 days | 15% |
| Keith Helen | 10/10 | 5038 days | 15% |
| Daniel Patricia | 9/10 | 5041 days | 15% |
| Laura Diepeveen | 8/10 | 5043 days | 15% |
| Fries | 10/10 | 5047 days | 15% |
| Karin Laurev | 10/10 | 5047 days | 15% |
| Gillian Rowe | 9/10 | 5048 days | 15% |
| Nigel Horrocks | 7/10 | 5048 days | 14% |
| Dieter Mangold | 10/10 | 5050 days | 15% |
| Lyn Deavin | 8/10 | 5050 days | 15% |
| Sabine & Stefan | 10/10 | 5051 days | 15% |
| Randewyk | 8/10 | 5051 days | 15% |
| Koster | 6/10 | 5053 days | 13% |
| Peter Aertssen | 7/10 | 5053 days | 14% |
| John A Jerome | 8/10 | 5053 days | 15% |
| Lynn Robinson | 10/10 | 5059 days | 15% |
| Heike | 9/10 | 5062 days | 15% |
| Robert MacLeod-Smith | 8/10 | 5063 days | 15% |
| Carel | 8/10 | 5064 days | 15% |
| Anna | 9/10 | 5065 days | 15% |
| Barrie Corless | 9/10 | 5066 days | 15% |
| Urban Reifler | 10/10 | 5078 days | 15% |
| Lyn Stainton | 10/10 | 5141 days | 15% |
| John & Vicki | 8/10 | 5145 days | 15% |
| jenckes | 9/10 | 5220 days | 15% |
| Debbie Smithers | 10/10 | 5362 days | 15% |
| Julie and Russ Charles | 10/10 | 5386 days | 15% |
| Kevin Wong | 10/10 | 5386 days | 15% |
| Rocipon | 8/10 | 5387 days | 15% |
| Margit and Corein Groenevelt | 7/10 | 5390 days | 14% |
| Richard Dudfield | 10/10 | 5390 days | 15% |
| John Duffy | 10/10 | 5390 days | 15% |
| Richard Gallichan | 9/10 | 5391 days | 15% |
| Jean Barker | 8/10 | 5391 days | 15% |
| Bette Eh | 10/10 | 5393 days | 15% |
| bryfrance | 10/10 | 5394 days | 15% |
| Juliane Kleiu | 10/10 | 5394 days | 15% |
| Claudia | 8/10 | 5394 days | 15% |
| E Brockbank | 9/10 | 5395 days | 15% |
| David Mellard | 10/10 | 5396 days | 15% |
| Bruce & Elaine Chote | 10/10 | 5396 days | 15% |
| Roland Berger | 7/10 | 5397 days | 14% |
| Ross | 9/10 | 5397 days | 15% |
| Gerstmann | 9/10 | 5398 days | 15% |
| Ekhard Wittkugel | 10/10 | 5400 days | 15% |
| Stephen Shearer | 10/10 | 5401 days | 15% |
| Monika | 10/10 | 5402 days | 15% |
| Betten | 9/10 | 5403 days | 15% |
| Stephen Jones | 9/10 | 5404 days | 15% |
| Mike and Diane Baker | 10/10 | 5405 days | 15% |
| Lenore Dejong | 10/10 | 5406 days | 15% |
| Andreas Fritesche | 8/10 | 5407 days | 15% |
| Matthys Kikke | 9/10 | 5408 days | 15% |
| Bucher Weruer | 10/10 | 5408 days | 15% |
| Camilla Andersson | 7/10 | 5409 days | 14% |
| Bob Adams | 10/10 | 5416 days | 15% |
| John | 8/10 | 5416 days | 15% |
| Katie Nicol | 10/10 | 5417 days | 15% |
| Martin Current | 9/10 | 5419 days | 15% |
| Teum and Orselien | 8/10 | 5420 days | 15% |
| Vanderhorst | 8/10 | 5420 days | 15% |
| John Price | 9/10 | 5422 days | 15% |
| Doris Schollenberger | 10/10 | 5422 days | 15% |
| Phil Hunter | 9/10 | 5423 days | 15% |
| Chris | 8/10 | 5424 days | 15% |
| Gordon Daniels | 8/10 | 5427 days | 15% |
| Hull | 9/10 | 5427 days | 15% |
| Lizzie | 10/10 | 5494 days | 15% |
| allesca | 10/10 | 5524 days | 15% |
| M Schram | 8/10 | 5687 days | 15% |
| Versteeg | 9/10 | 5690 days | 15% |
| Lomas | 10/10 | 5699 days | 15% |
| Maureen | 10/10 | 5703 days | 15% |
| Amy | 9/10 | 5708 days | 15% |
| Don & Geraldine | 10/10 | 5744 days | 15% |
| Hans and Astrid | 10/10 | 5746 days | 15% |
| Agnes | 10/10 | 5748 days | 15% |
| maggie Webster | 10/10 | 5755 days | 15% |
| Keita-Karen Buchanan | 10/10 | 5755 days | 15% |
| Lars Taarnhoej | 7/10 | 5755 days | 14% |
| markus Brandenberger | 10/10 | 5756 days | 15% |
| Jvjm Family | 9/10 | 5757 days | 15% |
| David B | 7/10 | 5764 days | 14% |
| Margaret O'Sullivan | 8/10 | 5764 days | 15% |
| Chris el capitan | 9/10 | 5774 days | 15% |
| John Cox | 9/10 | 5775 days | 15% |
| Muller Weissert | 8/10 | 5776 days | 15% |
| Brian Morris | 9/10 | 5778 days | 15% |
| Jobbs | 10/10 | 5778 days | 15% |
| Maria Newton | 9/10 | 5779 days | 15% |
| Dieter Groscurth | 8/10 | 5779 days | 15% |
| Gordon and Joyce | 9/10 | 5779 days | 15% |
| Remko Ebbens | 9/10 | 5782 days | 15% |
| Thijs Schoemaker | 8/10 | 5783 days | 15% |
| Armand | 5/10 | 5783 days | 12% |
| Ferth | 10/10 | 5783 days | 15% |
| J Kempeneers | 10/10 | 5783 days | 15% |
| Thea X | 5/10 | 5792 days | 12% |
| Keith Wilde | 10/10 | 5792 days | 15% |
| Dick Rosman | 9/10 | 5793 days | 15% |
| Terry Phillips | 5/10 | 5794 days | 12% |
| Jules | 8/10 | 5794 days | 15% |
| Carl Diehl | 9/10 | 5795 days | 15% |
| Paul Schoepfer | 9/10 | 5795 days | 15% |
| Uwe Rieper | 10/10 | 5796 days | 15% |
| Yvonne Ing | 10/10 | 5796 days | 15% |
| Diane Chapple | 9/10 | 5796 days | 15% |
| wannab | 9/10 | 5797 days | 15% |
| Kevin and Teresa | 9/10 | 5797 days | 15% |
| Christiane Lindenberg | 9/10 | 5806 days | 15% |
| Nigel Armstrong | 9/10 | 5808 days | 15% |
| Buss | 10/10 | 5810 days | 15% |
| John J | 9/10 | 5811 days | 15% |
| Heinrich Hax | 10/10 | 5817 days | 15% |
| marcusba | 8/10 | 5840 days | 15% |
| tanh | 9/10 | 5844 days | 15% |
| mariak | 7/10 | 5845 days | 14% |
| Silvana Thom | 10/10 | 5869 days | 15% |
| Wolfgang Dittrich | 10/10 | 5869 days | 15% |
| Chris Bulman | 10/10 | 5870 days | 15% |
| andyge | 8/10 | 5889 days | 15% |
| Ritag | 9/10 | 5975 days | 15% |
| regw | 10/10 | 5979 days | 15% |
| Cate | 9/10 | 6102 days | 15% |
| ginekek | 9/10 | 6103 days | 15% |
| geoffelizabeth | 9/10 | 6103 days | 15% |
| mikestep | 9/10 | 6103 days | 15% |
| EllenorO | 10/10 | 6103 days | 15% |
| Van Lent | 9/10 | 6104 days | 15% |
| Anna | 10/10 | 6104 days | 15% |
| Mike | 9/10 | 6107 days | 15% |
| Richard | 10/10 | 6112 days | 15% |
| Michael Walsall | 10/10 | 6112 days | 15% |
| AstridVG | 8/10 | 6119 days | 15% |
| Christine | 9/10 | 6119 days | 15% |
| Peter | 9/10 | 6119 days | 15% |
| DimitriD | 5/10 | 6120 days | 12% |
| Kitty | 9/10 | 6120 days | 15% |
| Max | 10/10 | 6122 days | 15% |
| Andy Baker | 9/10 | 6123 days | 15% |
| Francesca Sabat | 8/10 | 6125 days | 15% |
| Robert | 10/10 | 6133 days | 15% |
| Melissa Gillespie | 10/10 | 6134 days | 15% |
| Hetty | 9/10 | 6134 days | 15% |
| Charles | 7/10 | 6135 days | 14% |
| Byleveld | 8/10 | 6136 days | 15% |
| JoseB | 8/10 | 6137 days | 15% |
| MrHebbard | 10/10 | 6137 days | 15% |
| ChristineM | 10/10 | 6137 days | 15% |
| Elrik frau | 10/10 | 6137 days | 15% |
| Louise | 9/10 | 6143 days | 15% |
| Douglas | 9/10 | 6144 days | 15% |
| CSander | 9/10 | 6161 days | 15% |
| Patricia | 8/10 | 6171 days | 15% |
| Dijk | 8/10 | 6175 days | 15% |
| Josefine | 10/10 | 6175 days | 15% |
| Ducolq | 5/10 | 6175 days | 12% |
| Jacques | 8/10 | 6176 days | 15% |
| Carina | 8/10 | 6181 days | 15% |
| Michael | 9/10 | 6213 days | 15% |
| silvia | 8/10 | 6215 days | 15% |
| Anouk | 8/10 | 6215 days | 15% |
| Mat | 9/10 | 6220 days | 15% |
| Paul | 8/10 | 6266 days | 15% |
| Helga | 9/10 | 6277 days | 15% |
| Mikel | 9/10 | 6342 days | 15% |
| Christine | 6/10 | 6351 days | 13% |
| Jim Summers | 9/10 | 6351 days | 15% |
| Franz | 7/10 | 6474 days | 14% |
| Linda and Peter | 10/10 | 6482 days | 15% |
| Mike and Judy | 8/10 | 6483 days | 15% |
| Methers | 9/10 | 6483 days | 15% |
| Denise | 10/10 | 6486 days | 15% |
| Kavanagh | 8/10 | 6486 days | 15% |
| De Wijn | 8/10 | 6489 days | 15% |
| Lisa Jones | 9/10 | 6490 days | 15% |
| Christian | 9/10 | 6490 days | 15% |
| Soren Danning | 8/10 | 6490 days | 15% |
| Jones | 10/10 | 6494 days | 15% |
| Orla Hansen | 10/10 | 6495 days | 15% |
| Bauer | 10/10 | 6501 days | 15% |
| Aharon | 10/10 | 6501 days | 15% |
| D.A. Mulder | 9/10 | 6502 days | 15% |
| Jurg Meister | 8/10 | 6503 days | 15% |
| Sally and David Wallis | 10/10 | 6503 days | 15% |
| Knol | 9/10 | 6504 days | 15% |
| Sue Randall | 8/10 | 6507 days | 15% |
| Cole Penelope | 10/10 | 6507 days | 15% |
| Blenkoe | 6/10 | 6508 days | 13% |
| Erwin de Kleijn | 8/10 | 6508 days | 15% |
| Thomas | 9/10 | 6517 days | 15% |
| Bex | 10/10 | 6530 days | 15% |
| Van Hoof | 9/10 | 6543 days | 15% |
| Tim | 10/10 | 6543 days | 15% |
| Gabriel Faber | 9/10 | 6578 days | 15% |
| Jonkers | 9/10 | 6580 days | 15% |
| Edwin | 10/10 | 6584 days | 15% |
| Lyn Saxon | 10/10 | 6588 days | 15% |
| Wendy Williams | 10/10 | 6595 days | 15% |
| Hans Knappmann | 10/10 | 6705 days | 15% |
| Phillipa | 10/10 | 6813 days | 15% |
| Stefan&Gerte | 9/10 | 6827 days | 15% |
| Cat | 9/10 | 6833 days | 15% |
| TeamFlorida | 10/10 | 6840 days | 15% |
| Jo | 9/10 | 6840 days | 15% |
| Fenke | 9/10 | 6845 days | 15% |
| Bas | 9/10 | 6845 days | 15% |
| Martin Smith | 9/10 | 6850 days | 15% |
| John Beirne | 9/10 | 6857 days | 15% |
| Palle | 9/10 | 6862 days | 15% |
| Anna | 9/10 | 6862 days | 15% |
| Svenja | 10/10 | 6868 days | 15% |
| Shirely | 10/10 | 6868 days | 15% |
| Rogier | 8/10 | 6869 days | 15% |
| Wendy | 8/10 | 6873 days | 15% |
| Kerry | 10/10 | 6878 days | 15% |
| Henrich | 10/10 | 6878 days | 15% |
| Messing | 10/10 | 6881 days | 15% |
| Rolf Kruger | 10/10 | 6881 days | 15% |
| Ian | 8/10 | 6885 days | 15% |
| Peter | 9/10 | 6885 days | 15% |
| Brian | 10/10 | 6885 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 | -4.08% |
| 202 | -4.10% |
| 203 | -4.12% |
| … | … |
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.