Hey, 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 | 30 days | 100% |
| Nanay | 10/10 | 1736 days | 5% |
| Joanne&Ian | 10/10 | 1828 days | 5% |
| Geoff Steele | 8/10 | 3105 days | 2% |
| Axel and Patricia G | 6/10 | 3293 days | 2% |
| Leonie Westerhot | 8/10 | 3365 days | 2% |
| Ivanova R | 9/10 | 3622 days | 1% |
| Lorenz Pfisterer | 10/10 | 3634 days | 1% |
| Heidi et Mat | 8/10 | 3643 days | 1% |
| Anke Vater | 10/10 | 3644 days | 1% |
| Anouk Jongsma | 9/10 | 3652 days | 1% |
| Robin WUERFEL | 9/10 | 3724 days | 1% |
| Helen Parsons | 10/10 | 4044 days | 0% |
| Peter Beeloo | 9/10 | 4048 days | 0% |
| Laurent Arditi | 9/10 | 4232 days | 0% |
| Sheila Galpin | 9/10 | 4383 days | 1% |
| Simon Galpin | 9/10 | 4383 days | 1% |
| Douglas Dean | 10/10 | 4385 days | 1% |
| Stina Hultberg | 4/10 | 4389 days | 0% |
| Alexander Zimmer | 7/10 | 4390 days | 1% |
| Linus Larsson | 3/10 | 4391 days | 0% |
| Leon Courtney | 10/10 | 4392 days | 1% |
| Libby | 10/10 | 4406 days | 1% |
| Colin Billington | 7/10 | 4407 days | 1% |
| Don Wallis | 10/10 | 4410 days | 1% |
| Bill | 7/10 | 4411 days | 1% |
| Saskia | 5/10 | 4411 days | 0% |
| Terry Seaman | 8/10 | 4413 days | 1% |
| S B | 10/10 | 4426 days | 1% |
| M K | 10/10 | 4426 days | 1% |
| Alacchi Moustier | 10/10 | 4426 days | 1% |
| Maya Bakker-deDreu | 8/10 | 4434 days | 1% |
| Stuart Wilson | 8/10 | 4440 days | 1% |
| Fabian Lee | 5/10 | 4443 days | 0% |
| paul beacock | 10/10 | 4444 days | 1% |
| Gal Bero | 10/10 | 4447 days | 1% |
| Elly Zimmer | 6/10 | 4451 days | 1% |
| Bjorn Van Mulders | 10/10 | 4454 days | 1% |
| Kim Maertens | 9/10 | 4454 days | 1% |
| Steve Warren | 10/10 | 4566 days | 1% |
| hendrik king | 7/10 | 4658 days | 1% |
| Peter Jolliffe | 10/10 | 4750 days | 1% |
| Helen Dean | 10/10 | 4750 days | 1% |
| Dave Mertzig | 10/10 | 4750 days | 1% |
| Kathryn Pisco | 9/10 | 4756 days | 1% |
| Mike Pisco | 9/10 | 4756 days | 1% |
| Sebastian and Peter Beate | 10/10 | 4773 days | 1% |
| Fraser Goldsmith | 8/10 | 4774 days | 1% |
| Bucher | 9/10 | 4825 days | 1% |
| Marieke | 8/10 | 4826 days | 1% |
| Chew (Peter) | 7/10 | 4831 days | 1% |
| Natalie Nubler | 6/10 | 4832 days | 1% |
| Frans Derks | 9/10 | 4833 days | 1% |
| Meryem Buchwitz | 9/10 | 4853 days | 1% |
| roos wubben | 9/10 | 4856 days | 1% |
| Dagette | 9/10 | 4901 days | 1% |
| Teri C | 10/10 | 4931 days | 1% |
| Rob Klauer | 5/10 | 5103 days | 0% |
| Oliver Hardt | 9/10 | 5104 days | 1% |
| Val Phillips | 8/10 | 5108 days | 1% |
| Peter Adams | 9/10 | 5109 days | 1% |
| Harry Ruys | 8/10 | 5111 days | 1% |
| John McAllister | 9/10 | 5112 days | 1% |
| Keith Helen | 10/10 | 5115 days | 1% |
| Daniel Patricia | 9/10 | 5118 days | 1% |
| Laura Diepeveen | 8/10 | 5120 days | 1% |
| Fries | 10/10 | 5124 days | 1% |
| Karin Laurev | 10/10 | 5124 days | 1% |
| Gillian Rowe | 9/10 | 5125 days | 1% |
| Nigel Horrocks | 7/10 | 5125 days | 1% |
| Dieter Mangold | 10/10 | 5127 days | 1% |
| Lyn Deavin | 8/10 | 5127 days | 1% |
| Sabine & Stefan | 10/10 | 5128 days | 1% |
| Randewyk | 8/10 | 5128 days | 1% |
| Koster | 6/10 | 5130 days | 1% |
| Peter Aertssen | 7/10 | 5130 days | 1% |
| John A Jerome | 8/10 | 5130 days | 1% |
| Lynn Robinson | 10/10 | 5136 days | 1% |
| Heike | 9/10 | 5139 days | 1% |
| Robert MacLeod-Smith | 8/10 | 5140 days | 1% |
| Carel | 8/10 | 5141 days | 1% |
| Anna | 9/10 | 5142 days | 1% |
| Barrie Corless | 9/10 | 5143 days | 1% |
| Urban Reifler | 10/10 | 5155 days | 1% |
| Lyn Stainton | 10/10 | 5218 days | 1% |
| John & Vicki | 8/10 | 5222 days | 1% |
| jenckes | 9/10 | 5297 days | 1% |
| Debbie Smithers | 10/10 | 5439 days | 1% |
| Julie and Russ Charles | 10/10 | 5463 days | 1% |
| Kevin Wong | 10/10 | 5463 days | 1% |
| Rocipon | 8/10 | 5464 days | 1% |
| Margit and Corein Groenevelt | 7/10 | 5467 days | 1% |
| Richard Dudfield | 10/10 | 5467 days | 1% |
| John Duffy | 10/10 | 5467 days | 1% |
| Richard Gallichan | 9/10 | 5468 days | 1% |
| Jean Barker | 8/10 | 5468 days | 1% |
| Bette Eh | 10/10 | 5470 days | 1% |
| bryfrance | 10/10 | 5471 days | 1% |
| Juliane Kleiu | 10/10 | 5471 days | 1% |
| Claudia | 8/10 | 5471 days | 1% |
| E Brockbank | 9/10 | 5472 days | 1% |
| David Mellard | 10/10 | 5473 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5473 days | 1% |
| Roland Berger | 7/10 | 5474 days | 1% |
| Ross | 9/10 | 5474 days | 1% |
| Gerstmann | 9/10 | 5475 days | 1% |
| Ekhard Wittkugel | 10/10 | 5477 days | 1% |
| Stephen Shearer | 10/10 | 5478 days | 1% |
| Monika | 10/10 | 5479 days | 1% |
| Betten | 9/10 | 5480 days | 1% |
| Stephen Jones | 9/10 | 5481 days | 1% |
| Mike and Diane Baker | 10/10 | 5482 days | 1% |
| Lenore Dejong | 10/10 | 5483 days | 1% |
| Andreas Fritesche | 8/10 | 5484 days | 1% |
| Matthys Kikke | 9/10 | 5485 days | 1% |
| Bucher Weruer | 10/10 | 5485 days | 1% |
| Camilla Andersson | 7/10 | 5486 days | 1% |
| Bob Adams | 10/10 | 5493 days | 1% |
| John | 8/10 | 5493 days | 1% |
| Katie Nicol | 10/10 | 5494 days | 1% |
| Martin Current | 9/10 | 5496 days | 1% |
| Teum and Orselien | 8/10 | 5497 days | 1% |
| Vanderhorst | 8/10 | 5497 days | 1% |
| John Price | 9/10 | 5499 days | 1% |
| Doris Schollenberger | 10/10 | 5499 days | 1% |
| Phil Hunter | 9/10 | 5500 days | 1% |
| Chris | 8/10 | 5501 days | 1% |
| Gordon Daniels | 8/10 | 5504 days | 1% |
| Hull | 9/10 | 5504 days | 1% |
| Lizzie | 10/10 | 5571 days | 1% |
| allesca | 10/10 | 5601 days | 1% |
| M Schram | 8/10 | 5764 days | 1% |
| Versteeg | 9/10 | 5767 days | 1% |
| Lomas | 10/10 | 5776 days | 1% |
| Maureen | 10/10 | 5780 days | 1% |
| Amy | 9/10 | 5785 days | 1% |
| Don & Geraldine | 10/10 | 5821 days | 1% |
| Hans and Astrid | 10/10 | 5823 days | 1% |
| Agnes | 10/10 | 5825 days | 1% |
| maggie Webster | 10/10 | 5832 days | 1% |
| Keita-Karen Buchanan | 10/10 | 5832 days | 1% |
| Lars Taarnhoej | 7/10 | 5832 days | 1% |
| markus Brandenberger | 10/10 | 5833 days | 1% |
| Jvjm Family | 9/10 | 5834 days | 1% |
| David B | 7/10 | 5841 days | 1% |
| Margaret O'Sullivan | 8/10 | 5841 days | 1% |
| Chris el capitan | 9/10 | 5851 days | 1% |
| John Cox | 9/10 | 5852 days | 1% |
| Muller Weissert | 8/10 | 5853 days | 1% |
| Brian Morris | 9/10 | 5855 days | 1% |
| Jobbs | 10/10 | 5855 days | 1% |
| Maria Newton | 9/10 | 5856 days | 1% |
| Dieter Groscurth | 8/10 | 5856 days | 1% |
| Gordon and Joyce | 9/10 | 5856 days | 1% |
| Remko Ebbens | 9/10 | 5859 days | 1% |
| Thijs Schoemaker | 8/10 | 5860 days | 1% |
| Armand | 5/10 | 5860 days | 0% |
| Ferth | 10/10 | 5860 days | 1% |
| J Kempeneers | 10/10 | 5860 days | 1% |
| Thea X | 5/10 | 5869 days | 0% |
| Keith Wilde | 10/10 | 5869 days | 1% |
| Dick Rosman | 9/10 | 5870 days | 1% |
| Terry Phillips | 5/10 | 5871 days | 0% |
| Jules | 8/10 | 5871 days | 1% |
| Carl Diehl | 9/10 | 5872 days | 1% |
| Paul Schoepfer | 9/10 | 5872 days | 1% |
| Uwe Rieper | 10/10 | 5873 days | 1% |
| Yvonne Ing | 10/10 | 5873 days | 1% |
| Diane Chapple | 9/10 | 5873 days | 1% |
| wannab | 9/10 | 5874 days | 1% |
| Kevin and Teresa | 9/10 | 5874 days | 1% |
| Christiane Lindenberg | 9/10 | 5883 days | 1% |
| Nigel Armstrong | 9/10 | 5885 days | 1% |
| Buss | 10/10 | 5887 days | 1% |
| John J | 9/10 | 5888 days | 1% |
| Heinrich Hax | 10/10 | 5894 days | 1% |
| marcusba | 8/10 | 5917 days | 1% |
| tanh | 9/10 | 5921 days | 1% |
| mariak | 7/10 | 5922 days | 1% |
| Silvana Thom | 10/10 | 5946 days | 1% |
| Wolfgang Dittrich | 10/10 | 5946 days | 1% |
| Chris Bulman | 10/10 | 5947 days | 1% |
| andyge | 8/10 | 5966 days | 1% |
| Ritag | 9/10 | 6052 days | 1% |
| regw | 10/10 | 6056 days | 1% |
| Cate | 9/10 | 6180 days | 1% |
| ginekek | 9/10 | 6180 days | 1% |
| geoffelizabeth | 9/10 | 6180 days | 1% |
| mikestep | 9/10 | 6180 days | 1% |
| EllenorO | 10/10 | 6180 days | 1% |
| Van Lent | 9/10 | 6182 days | 1% |
| Anna | 10/10 | 6182 days | 1% |
| Mike | 9/10 | 6184 days | 1% |
| Richard | 10/10 | 6190 days | 1% |
| Michael Walsall | 10/10 | 6190 days | 1% |
| AstridVG | 8/10 | 6196 days | 1% |
| Christine | 9/10 | 6196 days | 1% |
| Peter | 9/10 | 6197 days | 1% |
| DimitriD | 5/10 | 6197 days | 0% |
| Kitty | 9/10 | 6197 days | 1% |
| Max | 10/10 | 6199 days | 1% |
| Andy Baker | 9/10 | 6200 days | 1% |
| Francesca Sabat | 8/10 | 6202 days | 1% |
| Robert | 10/10 | 6211 days | 1% |
| Melissa Gillespie | 10/10 | 6211 days | 1% |
| Hetty | 9/10 | 6212 days | 1% |
| Charles | 7/10 | 6213 days | 1% |
| Byleveld | 8/10 | 6213 days | 1% |
| JoseB | 8/10 | 6214 days | 1% |
| MrHebbard | 10/10 | 6214 days | 1% |
| ChristineM | 10/10 | 6214 days | 1% |
| Elrik frau | 10/10 | 6214 days | 1% |
| Louise | 9/10 | 6221 days | 1% |
| Douglas | 9/10 | 6222 days | 1% |
| CSander | 9/10 | 6238 days | 1% |
| Patricia | 8/10 | 6248 days | 1% |
| Dijk | 8/10 | 6252 days | 1% |
| Josefine | 10/10 | 6252 days | 1% |
| Ducolq | 5/10 | 6252 days | 0% |
| Jacques | 8/10 | 6253 days | 1% |
| Carina | 8/10 | 6259 days | 1% |
| Michael | 9/10 | 6290 days | 1% |
| silvia | 8/10 | 6293 days | 1% |
| Anouk | 8/10 | 6293 days | 1% |
| Mat | 9/10 | 6297 days | 1% |
| Paul | 8/10 | 6344 days | 1% |
| Helga | 9/10 | 6355 days | 1% |
| Mikel | 9/10 | 6420 days | 1% |
| Christine | 6/10 | 6429 days | 1% |
| Jim Summers | 9/10 | 6429 days | 1% |
| Franz | 7/10 | 6551 days | 1% |
| Linda and Peter | 10/10 | 6559 days | 1% |
| Mike and Judy | 8/10 | 6560 days | 1% |
| Methers | 9/10 | 6560 days | 1% |
| Denise | 10/10 | 6563 days | 1% |
| Kavanagh | 8/10 | 6563 days | 1% |
| De Wijn | 8/10 | 6566 days | 1% |
| Lisa Jones | 9/10 | 6567 days | 1% |
| Christian | 9/10 | 6567 days | 1% |
| Soren Danning | 8/10 | 6567 days | 1% |
| Jones | 10/10 | 6571 days | 1% |
| Orla Hansen | 10/10 | 6572 days | 1% |
| Bauer | 10/10 | 6578 days | 1% |
| Aharon | 10/10 | 6578 days | 1% |
| D.A. Mulder | 9/10 | 6579 days | 1% |
| Jurg Meister | 8/10 | 6580 days | 1% |
| Sally and David Wallis | 10/10 | 6580 days | 1% |
| Knol | 9/10 | 6581 days | 1% |
| Sue Randall | 8/10 | 6584 days | 1% |
| Cole Penelope | 10/10 | 6584 days | 1% |
| Blenkoe | 6/10 | 6585 days | 1% |
| Erwin de Kleijn | 8/10 | 6585 days | 1% |
| Thomas | 9/10 | 6594 days | 1% |
| Bex | 10/10 | 6607 days | 1% |
| Van Hoof | 9/10 | 6620 days | 1% |
| Tim | 10/10 | 6620 days | 1% |
| Gabriel Faber | 9/10 | 6655 days | 1% |
| Jonkers | 9/10 | 6657 days | 1% |
| Edwin | 10/10 | 6661 days | 1% |
| Lyn Saxon | 10/10 | 6665 days | 1% |
| Wendy Williams | 10/10 | 6672 days | 1% |
| Hans Knappmann | 10/10 | 6782 days | 1% |
| Phillipa | 10/10 | 6890 days | 1% |
| Stefan&Gerte | 9/10 | 6904 days | 1% |
| Cat | 9/10 | 6910 days | 1% |
| TeamFlorida | 10/10 | 6917 days | 1% |
| Jo | 9/10 | 6917 days | 1% |
| Fenke | 9/10 | 6922 days | 1% |
| Bas | 9/10 | 6922 days | 1% |
| Martin Smith | 9/10 | 6927 days | 1% |
| John Beirne | 9/10 | 6934 days | 1% |
| Palle | 9/10 | 6939 days | 1% |
| Anna | 9/10 | 6939 days | 1% |
| Svenja | 10/10 | 6945 days | 1% |
| Shirely | 10/10 | 6945 days | 1% |
| Rogier | 8/10 | 6946 days | 1% |
| Wendy | 8/10 | 6950 days | 1% |
| Kerry | 10/10 | 6955 days | 1% |
| Henrich | 10/10 | 6955 days | 1% |
| Messing | 10/10 | 6958 days | 1% |
| Rolf Kruger | 10/10 | 6958 days | 1% |
| Ian | 8/10 | 6962 days | 1% |
| Peter | 9/10 | 6962 days | 1% |
| Brian | 10/10 | 6962 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
-0.29% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 55 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 14 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 11 | -0.23% |
| 12 | -0.25% |
| 13 | -0.27% |
| 14 | -0.29% |
| 15 | -0.31% |
| 16 | -0.33% |
| 17 | -0.35% |
| … | … |
Balancing Adjustment
0.78% 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.