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
90.37%
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 | 1267 days | 100% |
| Joanne&Ian | 10/10 | 1359 days | 76% |
| Geoff Steele | 8/10 | 2635 days | 15% |
| Axel and Patricia G | 6/10 | 2824 days | 11% |
| Leonie Westerhot | 8/10 | 2896 days | 12% |
| Ivanova R | 9/10 | 3153 days | 10% |
| Lorenz Pfisterer | 10/10 | 3165 days | 10% |
| Heidi et Mat | 8/10 | 3174 days | 10% |
| Anke Vater | 10/10 | 3175 days | 10% |
| Anouk Jongsma | 9/10 | 3183 days | 10% |
| Robin WUERFEL | 9/10 | 3255 days | 9% |
| Helen Parsons | 10/10 | 3575 days | 7% |
| Peter Beeloo | 9/10 | 3578 days | 7% |
| Laurent Arditi | 9/10 | 3763 days | 5% |
| Sheila Galpin | 9/10 | 3914 days | 4% |
| Simon Galpin | 9/10 | 3914 days | 4% |
| Douglas Dean | 10/10 | 3916 days | 4% |
| Stina Hultberg | 4/10 | 3920 days | 2% |
| Alexander Zimmer | 7/10 | 3921 days | 4% |
| Linus Larsson | 3/10 | 3922 days | 2% |
| Leon Courtney | 10/10 | 3923 days | 4% |
| Libby | 10/10 | 3937 days | 4% |
| Colin Billington | 7/10 | 3938 days | 3% |
| Don Wallis | 10/10 | 3941 days | 4% |
| Bill | 7/10 | 3942 days | 3% |
| Saskia | 5/10 | 3942 days | 3% |
| Terry Seaman | 8/10 | 3944 days | 4% |
| S B | 10/10 | 3957 days | 4% |
| M K | 10/10 | 3957 days | 4% |
| Alacchi Moustier | 10/10 | 3957 days | 4% |
| Maya Bakker-deDreu | 8/10 | 3965 days | 3% |
| Stuart Wilson | 8/10 | 3971 days | 3% |
| Fabian Lee | 5/10 | 3974 days | 3% |
| paul beacock | 10/10 | 3975 days | 3% |
| Gal Bero | 10/10 | 3978 days | 3% |
| Elly Zimmer | 6/10 | 3982 days | 3% |
| Bjorn Van Mulders | 10/10 | 3985 days | 3% |
| Kim Maertens | 9/10 | 3985 days | 3% |
| Steve Warren | 10/10 | 4097 days | 2% |
| hendrik king | 7/10 | 4189 days | 1% |
| Peter Jolliffe | 10/10 | 4281 days | 1% |
| Helen Dean | 10/10 | 4281 days | 1% |
| Dave Mertzig | 10/10 | 4281 days | 1% |
| Kathryn Pisco | 9/10 | 4287 days | 1% |
| Mike Pisco | 9/10 | 4287 days | 1% |
| Sebastian and Peter Beate | 10/10 | 4304 days | 1% |
| Fraser Goldsmith | 8/10 | 4305 days | 1% |
| Bucher | 9/10 | 4356 days | 0% |
| Marieke | 8/10 | 4357 days | 0% |
| Chew (Peter) | 7/10 | 4362 days | 0% |
| Natalie Nubler | 6/10 | 4363 days | 0% |
| Frans Derks | 9/10 | 4364 days | 0% |
| Meryem Buchwitz | 9/10 | 4384 days | 4% |
| roos wubben | 9/10 | 4387 days | 4% |
| Dagette | 9/10 | 4432 days | 4% |
| Teri C | 10/10 | 4462 days | 4% |
| Rob Klauer | 5/10 | 4634 days | 3% |
| Oliver Hardt | 9/10 | 4635 days | 4% |
| Val Phillips | 8/10 | 4639 days | 4% |
| Peter Adams | 9/10 | 4640 days | 4% |
| Harry Ruys | 8/10 | 4642 days | 4% |
| John McAllister | 9/10 | 4643 days | 4% |
| Keith Helen | 10/10 | 4646 days | 4% |
| Daniel Patricia | 9/10 | 4649 days | 4% |
| Laura Diepeveen | 8/10 | 4651 days | 4% |
| Fries | 10/10 | 4655 days | 4% |
| Karin Laurev | 10/10 | 4655 days | 4% |
| Gillian Rowe | 9/10 | 4656 days | 4% |
| Nigel Horrocks | 7/10 | 4656 days | 4% |
| Dieter Mangold | 10/10 | 4658 days | 4% |
| Lyn Deavin | 8/10 | 4658 days | 4% |
| Sabine & Stefan | 10/10 | 4659 days | 4% |
| Randewyk | 8/10 | 4659 days | 4% |
| Koster | 6/10 | 4661 days | 4% |
| Peter Aertssen | 7/10 | 4661 days | 4% |
| John A Jerome | 8/10 | 4661 days | 4% |
| Lynn Robinson | 10/10 | 4667 days | 4% |
| Heike | 9/10 | 4670 days | 4% |
| Robert MacLeod-Smith | 8/10 | 4671 days | 4% |
| Carel | 8/10 | 4672 days | 4% |
| Anna | 9/10 | 4673 days | 4% |
| Barrie Corless | 9/10 | 4674 days | 4% |
| Urban Reifler | 10/10 | 4686 days | 4% |
| Lyn Stainton | 10/10 | 4749 days | 4% |
| John & Vicki | 8/10 | 4753 days | 4% |
| jenckes | 9/10 | 4828 days | 4% |
| Debbie Smithers | 10/10 | 4970 days | 4% |
| Julie and Russ Charles | 10/10 | 4994 days | 4% |
| Kevin Wong | 10/10 | 4994 days | 4% |
| Rocipon | 8/10 | 4995 days | 4% |
| Margit and Corein Groenevelt | 7/10 | 4998 days | 4% |
| Richard Dudfield | 10/10 | 4998 days | 4% |
| John Duffy | 10/10 | 4998 days | 4% |
| Richard Gallichan | 9/10 | 4999 days | 4% |
| Jean Barker | 8/10 | 4999 days | 4% |
| Bette Eh | 10/10 | 5001 days | 4% |
| bryfrance | 10/10 | 5002 days | 4% |
| Juliane Kleiu | 10/10 | 5002 days | 4% |
| Claudia | 8/10 | 5002 days | 4% |
| E Brockbank | 9/10 | 5003 days | 4% |
| David Mellard | 10/10 | 5004 days | 4% |
| Bruce & Elaine Chote | 10/10 | 5004 days | 4% |
| Roland Berger | 7/10 | 5005 days | 4% |
| Ross | 9/10 | 5005 days | 4% |
| Gerstmann | 9/10 | 5006 days | 4% |
| Ekhard Wittkugel | 10/10 | 5008 days | 4% |
| Stephen Shearer | 10/10 | 5009 days | 4% |
| Monika | 10/10 | 5010 days | 4% |
| Betten | 9/10 | 5011 days | 4% |
| Stephen Jones | 9/10 | 5012 days | 4% |
| Mike and Diane Baker | 10/10 | 5013 days | 4% |
| Lenore Dejong | 10/10 | 5014 days | 4% |
| Andreas Fritesche | 8/10 | 5015 days | 4% |
| Matthys Kikke | 9/10 | 5016 days | 4% |
| Bucher Weruer | 10/10 | 5016 days | 4% |
| Camilla Andersson | 7/10 | 5017 days | 4% |
| Bob Adams | 10/10 | 5024 days | 4% |
| John | 8/10 | 5024 days | 4% |
| Katie Nicol | 10/10 | 5025 days | 4% |
| Martin Current | 9/10 | 5027 days | 4% |
| Teum and Orselien | 8/10 | 5028 days | 4% |
| Vanderhorst | 8/10 | 5028 days | 4% |
| John Price | 9/10 | 5030 days | 4% |
| Doris Schollenberger | 10/10 | 5030 days | 4% |
| Phil Hunter | 9/10 | 5031 days | 4% |
| Chris | 8/10 | 5032 days | 4% |
| Gordon Daniels | 8/10 | 5035 days | 4% |
| Hull | 9/10 | 5035 days | 4% |
| Lizzie | 10/10 | 5102 days | 4% |
| allesca | 10/10 | 5132 days | 4% |
| M Schram | 8/10 | 5295 days | 4% |
| Versteeg | 9/10 | 5298 days | 4% |
| Lomas | 10/10 | 5307 days | 4% |
| Maureen | 10/10 | 5311 days | 4% |
| Amy | 9/10 | 5316 days | 4% |
| Don & Geraldine | 10/10 | 5352 days | 4% |
| Hans and Astrid | 10/10 | 5354 days | 4% |
| Agnes | 10/10 | 5356 days | 4% |
| maggie Webster | 10/10 | 5363 days | 4% |
| Keita-Karen Buchanan | 10/10 | 5363 days | 4% |
| Lars Taarnhoej | 7/10 | 5363 days | 4% |
| markus Brandenberger | 10/10 | 5364 days | 4% |
| Jvjm Family | 9/10 | 5365 days | 4% |
| David B | 7/10 | 5372 days | 4% |
| Margaret O'Sullivan | 8/10 | 5372 days | 4% |
| Chris el capitan | 9/10 | 5382 days | 4% |
| John Cox | 9/10 | 5383 days | 4% |
| Muller Weissert | 8/10 | 5384 days | 4% |
| Brian Morris | 9/10 | 5386 days | 4% |
| Jobbs | 10/10 | 5386 days | 4% |
| Maria Newton | 9/10 | 5387 days | 4% |
| Dieter Groscurth | 8/10 | 5387 days | 4% |
| Gordon and Joyce | 9/10 | 5387 days | 4% |
| Remko Ebbens | 9/10 | 5390 days | 4% |
| Thijs Schoemaker | 8/10 | 5391 days | 4% |
| Armand | 5/10 | 5391 days | 3% |
| Ferth | 10/10 | 5391 days | 4% |
| J Kempeneers | 10/10 | 5391 days | 4% |
| Thea X | 5/10 | 5400 days | 3% |
| Keith Wilde | 10/10 | 5400 days | 4% |
| Dick Rosman | 9/10 | 5401 days | 4% |
| Terry Phillips | 5/10 | 5402 days | 3% |
| Jules | 8/10 | 5402 days | 4% |
| Carl Diehl | 9/10 | 5403 days | 4% |
| Paul Schoepfer | 9/10 | 5403 days | 4% |
| Uwe Rieper | 10/10 | 5404 days | 4% |
| Yvonne Ing | 10/10 | 5404 days | 4% |
| Diane Chapple | 9/10 | 5404 days | 4% |
| wannab | 9/10 | 5405 days | 4% |
| Kevin and Teresa | 9/10 | 5405 days | 4% |
| Christiane Lindenberg | 9/10 | 5414 days | 4% |
| Nigel Armstrong | 9/10 | 5416 days | 4% |
| Buss | 10/10 | 5418 days | 4% |
| John J | 9/10 | 5419 days | 4% |
| Heinrich Hax | 10/10 | 5425 days | 4% |
| marcusba | 8/10 | 5448 days | 4% |
| tanh | 9/10 | 5452 days | 4% |
| mariak | 7/10 | 5453 days | 4% |
| Silvana Thom | 10/10 | 5477 days | 4% |
| Wolfgang Dittrich | 10/10 | 5477 days | 4% |
| Chris Bulman | 10/10 | 5478 days | 4% |
| andyge | 8/10 | 5497 days | 4% |
| Ritag | 9/10 | 5583 days | 4% |
| regw | 10/10 | 5587 days | 4% |
| Cate | 9/10 | 5710 days | 4% |
| ginekek | 9/10 | 5711 days | 4% |
| geoffelizabeth | 9/10 | 5711 days | 4% |
| mikestep | 9/10 | 5711 days | 4% |
| EllenorO | 10/10 | 5711 days | 4% |
| Van Lent | 9/10 | 5712 days | 4% |
| Anna | 10/10 | 5712 days | 4% |
| Mike | 9/10 | 5715 days | 4% |
| Richard | 10/10 | 5720 days | 4% |
| Michael Walsall | 10/10 | 5720 days | 4% |
| AstridVG | 8/10 | 5727 days | 4% |
| Christine | 9/10 | 5727 days | 4% |
| Peter | 9/10 | 5727 days | 4% |
| DimitriD | 5/10 | 5728 days | 3% |
| Kitty | 9/10 | 5728 days | 4% |
| Max | 10/10 | 5730 days | 4% |
| Andy Baker | 9/10 | 5731 days | 4% |
| Francesca Sabat | 8/10 | 5733 days | 4% |
| Robert | 10/10 | 5741 days | 4% |
| Melissa Gillespie | 10/10 | 5742 days | 4% |
| Hetty | 9/10 | 5742 days | 4% |
| Charles | 7/10 | 5743 days | 4% |
| Byleveld | 8/10 | 5744 days | 4% |
| JoseB | 8/10 | 5745 days | 4% |
| MrHebbard | 10/10 | 5745 days | 4% |
| ChristineM | 10/10 | 5745 days | 4% |
| Elrik frau | 10/10 | 5745 days | 4% |
| Louise | 9/10 | 5751 days | 4% |
| Douglas | 9/10 | 5752 days | 4% |
| CSander | 9/10 | 5769 days | 4% |
| Patricia | 8/10 | 5779 days | 4% |
| Dijk | 8/10 | 5783 days | 4% |
| Josefine | 10/10 | 5783 days | 4% |
| Ducolq | 5/10 | 5783 days | 3% |
| Jacques | 8/10 | 5784 days | 4% |
| Carina | 8/10 | 5789 days | 4% |
| Michael | 9/10 | 5821 days | 4% |
| silvia | 8/10 | 5823 days | 4% |
| Anouk | 8/10 | 5823 days | 4% |
| Mat | 9/10 | 5828 days | 4% |
| Paul | 8/10 | 5874 days | 4% |
| Helga | 9/10 | 5885 days | 4% |
| Mikel | 9/10 | 5950 days | 4% |
| Christine | 6/10 | 5959 days | 4% |
| Jim Summers | 9/10 | 5959 days | 4% |
| Franz | 7/10 | 6082 days | 4% |
| Linda and Peter | 10/10 | 6090 days | 4% |
| Mike and Judy | 8/10 | 6091 days | 4% |
| Methers | 9/10 | 6091 days | 4% |
| Denise | 10/10 | 6094 days | 4% |
| Kavanagh | 8/10 | 6094 days | 4% |
| De Wijn | 8/10 | 6097 days | 4% |
| Lisa Jones | 9/10 | 6098 days | 4% |
| Christian | 9/10 | 6098 days | 4% |
| Soren Danning | 8/10 | 6098 days | 4% |
| Jones | 10/10 | 6102 days | 4% |
| Orla Hansen | 10/10 | 6103 days | 4% |
| Bauer | 10/10 | 6109 days | 4% |
| Aharon | 10/10 | 6109 days | 4% |
| D.A. Mulder | 9/10 | 6110 days | 4% |
| Jurg Meister | 8/10 | 6111 days | 4% |
| Sally and David Wallis | 10/10 | 6111 days | 4% |
| Knol | 9/10 | 6112 days | 4% |
| Sue Randall | 8/10 | 6115 days | 4% |
| Cole Penelope | 10/10 | 6115 days | 4% |
| Blenkoe | 6/10 | 6116 days | 4% |
| Erwin de Kleijn | 8/10 | 6116 days | 4% |
| Thomas | 9/10 | 6125 days | 4% |
| Bex | 10/10 | 6138 days | 4% |
| Van Hoof | 9/10 | 6151 days | 4% |
| Tim | 10/10 | 6151 days | 4% |
| Gabriel Faber | 9/10 | 6186 days | 4% |
| Jonkers | 9/10 | 6188 days | 4% |
| Edwin | 10/10 | 6192 days | 4% |
| Lyn Saxon | 10/10 | 6196 days | 4% |
| Wendy Williams | 10/10 | 6203 days | 4% |
| Hans Knappmann | 10/10 | 6313 days | 4% |
| Phillipa | 10/10 | 6421 days | 4% |
| Stefan&Gerte | 9/10 | 6435 days | 4% |
| Cat | 9/10 | 6441 days | 4% |
| TeamFlorida | 10/10 | 6448 days | 4% |
| Jo | 9/10 | 6448 days | 4% |
| Fenke | 9/10 | 6453 days | 4% |
| Bas | 9/10 | 6453 days | 4% |
| Martin Smith | 9/10 | 6458 days | 4% |
| John Beirne | 9/10 | 6465 days | 4% |
| Palle | 9/10 | 6470 days | 4% |
| Anna | 9/10 | 6470 days | 4% |
| Svenja | 10/10 | 6476 days | 4% |
| Shirely | 10/10 | 6476 days | 4% |
| Rogier | 8/10 | 6477 days | 4% |
| Wendy | 8/10 | 6481 days | 4% |
| Kerry | 10/10 | 6486 days | 4% |
| Henrich | 10/10 | 6486 days | 4% |
| Messing | 10/10 | 6489 days | 4% |
| Rolf Kruger | 10/10 | 6489 days | 4% |
| Ian | 8/10 | 6493 days | 4% |
| Peter | 9/10 | 6493 days | 4% |
| Brian | 10/10 | 6493 days | 4% |
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
-4.04% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 44 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 | -3.98% |
| 198 | -4.00% |
| 199 | -4.02% |
| 200 | -4.04% |
| 201 | -4.06% |
| 202 | -4.08% |
| 203 | -4.10% |
| … | … |
Balancing Adjustment
1.57% 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
88%
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.