Hi, 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
90.03%
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 |
|---|---|---|---|
| Nanay | 10/10 | 1380 days | 100% |
| Joanne&Ian | 10/10 | 1472 days | 74% |
| Geoff Steele | 8/10 | 2749 days | 18% |
| Axel and Patricia G | 6/10 | 2937 days | 14% |
| Leonie Westerhot | 8/10 | 3009 days | 15% |
| Ivanova R | 9/10 | 3266 days | 12% |
| Lorenz Pfisterer | 10/10 | 3278 days | 12% |
| Heidi et Mat | 8/10 | 3287 days | 12% |
| Anke Vater | 10/10 | 3288 days | 12% |
| Anouk Jongsma | 9/10 | 3296 days | 12% |
| Robin WUERFEL | 9/10 | 3368 days | 11% |
| Helen Parsons | 10/10 | 3688 days | 8% |
| Peter Beeloo | 9/10 | 3692 days | 7% |
| Laurent Arditi | 9/10 | 3876 days | 5% |
| Sheila Galpin | 9/10 | 4027 days | 3% |
| Simon Galpin | 9/10 | 4027 days | 3% |
| Douglas Dean | 10/10 | 4029 days | 3% |
| Stina Hultberg | 4/10 | 4033 days | 2% |
| Alexander Zimmer | 7/10 | 4034 days | 3% |
| Linus Larsson | 3/10 | 4035 days | 1% |
| Leon Courtney | 10/10 | 4036 days | 3% |
| Libby | 10/10 | 4050 days | 3% |
| Colin Billington | 7/10 | 4051 days | 3% |
| Don Wallis | 10/10 | 4054 days | 3% |
| Bill | 7/10 | 4055 days | 3% |
| Saskia | 5/10 | 4055 days | 2% |
| Terry Seaman | 8/10 | 4057 days | 3% |
| S B | 10/10 | 4070 days | 3% |
| M K | 10/10 | 4070 days | 3% |
| Alacchi Moustier | 10/10 | 4070 days | 3% |
| Maya Bakker-deDreu | 8/10 | 4078 days | 3% |
| Stuart Wilson | 8/10 | 4084 days | 3% |
| Fabian Lee | 5/10 | 4087 days | 2% |
| paul beacock | 10/10 | 4088 days | 3% |
| Gal Bero | 10/10 | 4091 days | 3% |
| Elly Zimmer | 6/10 | 4095 days | 2% |
| Bjorn Van Mulders | 10/10 | 4098 days | 3% |
| Kim Maertens | 9/10 | 4098 days | 3% |
| Steve Warren | 10/10 | 4210 days | 1% |
| hendrik king | 7/10 | 4302 days | 0% |
| Peter Jolliffe | 10/10 | 4394 days | 5% |
| Helen Dean | 10/10 | 4394 days | 5% |
| Dave Mertzig | 10/10 | 4394 days | 5% |
| Kathryn Pisco | 9/10 | 4400 days | 5% |
| Mike Pisco | 9/10 | 4400 days | 5% |
| Sebastian and Peter Beate | 10/10 | 4417 days | 5% |
| Fraser Goldsmith | 8/10 | 4418 days | 5% |
| Bucher | 9/10 | 4469 days | 5% |
| Marieke | 8/10 | 4470 days | 5% |
| Chew (Peter) | 7/10 | 4475 days | 5% |
| Natalie Nubler | 6/10 | 4476 days | 4% |
| Frans Derks | 9/10 | 4477 days | 5% |
| Meryem Buchwitz | 9/10 | 4497 days | 5% |
| roos wubben | 9/10 | 4500 days | 5% |
| Dagette | 9/10 | 4545 days | 5% |
| Teri C | 10/10 | 4575 days | 5% |
| Rob Klauer | 5/10 | 4747 days | 4% |
| Oliver Hardt | 9/10 | 4748 days | 5% |
| Val Phillips | 8/10 | 4752 days | 5% |
| Peter Adams | 9/10 | 4753 days | 5% |
| Harry Ruys | 8/10 | 4755 days | 5% |
| John McAllister | 9/10 | 4756 days | 5% |
| Keith Helen | 10/10 | 4759 days | 5% |
| Daniel Patricia | 9/10 | 4762 days | 5% |
| Laura Diepeveen | 8/10 | 4764 days | 5% |
| Fries | 10/10 | 4768 days | 5% |
| Karin Laurev | 10/10 | 4768 days | 5% |
| Gillian Rowe | 9/10 | 4769 days | 5% |
| Nigel Horrocks | 7/10 | 4769 days | 5% |
| Dieter Mangold | 10/10 | 4771 days | 5% |
| Lyn Deavin | 8/10 | 4771 days | 5% |
| Sabine & Stefan | 10/10 | 4772 days | 5% |
| Randewyk | 8/10 | 4772 days | 5% |
| Koster | 6/10 | 4774 days | 4% |
| Peter Aertssen | 7/10 | 4774 days | 5% |
| John A Jerome | 8/10 | 4774 days | 5% |
| Lynn Robinson | 10/10 | 4780 days | 5% |
| Heike | 9/10 | 4783 days | 5% |
| Robert MacLeod-Smith | 8/10 | 4784 days | 5% |
| Carel | 8/10 | 4785 days | 5% |
| Anna | 9/10 | 4786 days | 5% |
| Barrie Corless | 9/10 | 4787 days | 5% |
| Urban Reifler | 10/10 | 4799 days | 5% |
| Lyn Stainton | 10/10 | 4862 days | 5% |
| John & Vicki | 8/10 | 4866 days | 5% |
| jenckes | 9/10 | 4941 days | 5% |
| Debbie Smithers | 10/10 | 5083 days | 5% |
| Julie and Russ Charles | 10/10 | 5107 days | 5% |
| Kevin Wong | 10/10 | 5107 days | 5% |
| Rocipon | 8/10 | 5108 days | 5% |
| Margit and Corein Groenevelt | 7/10 | 5111 days | 5% |
| Richard Dudfield | 10/10 | 5111 days | 5% |
| John Duffy | 10/10 | 5111 days | 5% |
| Richard Gallichan | 9/10 | 5112 days | 5% |
| Jean Barker | 8/10 | 5112 days | 5% |
| Bette Eh | 10/10 | 5114 days | 5% |
| bryfrance | 10/10 | 5115 days | 5% |
| Juliane Kleiu | 10/10 | 5115 days | 5% |
| Claudia | 8/10 | 5115 days | 5% |
| E Brockbank | 9/10 | 5116 days | 5% |
| David Mellard | 10/10 | 5117 days | 5% |
| Bruce & Elaine Chote | 10/10 | 5117 days | 5% |
| Roland Berger | 7/10 | 5118 days | 5% |
| Ross | 9/10 | 5118 days | 5% |
| Gerstmann | 9/10 | 5119 days | 5% |
| Ekhard Wittkugel | 10/10 | 5121 days | 5% |
| Stephen Shearer | 10/10 | 5122 days | 5% |
| Monika | 10/10 | 5123 days | 5% |
| Betten | 9/10 | 5124 days | 5% |
| Stephen Jones | 9/10 | 5125 days | 5% |
| Mike and Diane Baker | 10/10 | 5126 days | 5% |
| Lenore Dejong | 10/10 | 5127 days | 5% |
| Andreas Fritesche | 8/10 | 5128 days | 5% |
| Matthys Kikke | 9/10 | 5129 days | 5% |
| Bucher Weruer | 10/10 | 5129 days | 5% |
| Camilla Andersson | 7/10 | 5130 days | 5% |
| Bob Adams | 10/10 | 5137 days | 5% |
| John | 8/10 | 5137 days | 5% |
| Katie Nicol | 10/10 | 5138 days | 5% |
| Martin Current | 9/10 | 5140 days | 5% |
| Teum and Orselien | 8/10 | 5141 days | 5% |
| Vanderhorst | 8/10 | 5141 days | 5% |
| John Price | 9/10 | 5143 days | 5% |
| Doris Schollenberger | 10/10 | 5143 days | 5% |
| Phil Hunter | 9/10 | 5144 days | 5% |
| Chris | 8/10 | 5145 days | 5% |
| Gordon Daniels | 8/10 | 5148 days | 5% |
| Hull | 9/10 | 5148 days | 5% |
| Lizzie | 10/10 | 5215 days | 5% |
| allesca | 10/10 | 5245 days | 5% |
| M Schram | 8/10 | 5408 days | 5% |
| Versteeg | 9/10 | 5411 days | 5% |
| Lomas | 10/10 | 5420 days | 5% |
| Maureen | 10/10 | 5424 days | 5% |
| Amy | 9/10 | 5429 days | 5% |
| Don & Geraldine | 10/10 | 5465 days | 5% |
| Hans and Astrid | 10/10 | 5467 days | 5% |
| Agnes | 10/10 | 5469 days | 5% |
| maggie Webster | 10/10 | 5476 days | 5% |
| Keita-Karen Buchanan | 10/10 | 5476 days | 5% |
| Lars Taarnhoej | 7/10 | 5476 days | 5% |
| markus Brandenberger | 10/10 | 5477 days | 5% |
| Jvjm Family | 9/10 | 5478 days | 5% |
| David B | 7/10 | 5485 days | 5% |
| Margaret O'Sullivan | 8/10 | 5485 days | 5% |
| Chris el capitan | 9/10 | 5495 days | 5% |
| John Cox | 9/10 | 5496 days | 5% |
| Muller Weissert | 8/10 | 5497 days | 5% |
| Brian Morris | 9/10 | 5499 days | 5% |
| Jobbs | 10/10 | 5499 days | 5% |
| Maria Newton | 9/10 | 5500 days | 5% |
| Dieter Groscurth | 8/10 | 5500 days | 5% |
| Gordon and Joyce | 9/10 | 5500 days | 5% |
| Remko Ebbens | 9/10 | 5503 days | 5% |
| Thijs Schoemaker | 8/10 | 5504 days | 5% |
| Armand | 5/10 | 5504 days | 4% |
| Ferth | 10/10 | 5504 days | 5% |
| J Kempeneers | 10/10 | 5504 days | 5% |
| Thea X | 5/10 | 5513 days | 4% |
| Keith Wilde | 10/10 | 5513 days | 5% |
| Dick Rosman | 9/10 | 5514 days | 5% |
| Terry Phillips | 5/10 | 5515 days | 4% |
| Jules | 8/10 | 5515 days | 5% |
| Carl Diehl | 9/10 | 5516 days | 5% |
| Paul Schoepfer | 9/10 | 5516 days | 5% |
| Uwe Rieper | 10/10 | 5517 days | 5% |
| Yvonne Ing | 10/10 | 5517 days | 5% |
| Diane Chapple | 9/10 | 5517 days | 5% |
| wannab | 9/10 | 5518 days | 5% |
| Kevin and Teresa | 9/10 | 5518 days | 5% |
| Christiane Lindenberg | 9/10 | 5527 days | 5% |
| Nigel Armstrong | 9/10 | 5529 days | 5% |
| Buss | 10/10 | 5531 days | 5% |
| John J | 9/10 | 5532 days | 5% |
| Heinrich Hax | 10/10 | 5538 days | 5% |
| marcusba | 8/10 | 5561 days | 5% |
| tanh | 9/10 | 5565 days | 5% |
| mariak | 7/10 | 5566 days | 5% |
| Silvana Thom | 10/10 | 5590 days | 5% |
| Wolfgang Dittrich | 10/10 | 5590 days | 5% |
| Chris Bulman | 10/10 | 5591 days | 5% |
| andyge | 8/10 | 5610 days | 5% |
| Ritag | 9/10 | 5696 days | 5% |
| regw | 10/10 | 5700 days | 5% |
| Cate | 9/10 | 5824 days | 5% |
| ginekek | 9/10 | 5824 days | 5% |
| geoffelizabeth | 9/10 | 5824 days | 5% |
| mikestep | 9/10 | 5824 days | 5% |
| EllenorO | 10/10 | 5824 days | 5% |
| Van Lent | 9/10 | 5826 days | 5% |
| Anna | 10/10 | 5826 days | 5% |
| Mike | 9/10 | 5828 days | 5% |
| Richard | 10/10 | 5834 days | 5% |
| Michael Walsall | 10/10 | 5834 days | 5% |
| AstridVG | 8/10 | 5840 days | 5% |
| Christine | 9/10 | 5840 days | 5% |
| Peter | 9/10 | 5841 days | 5% |
| DimitriD | 5/10 | 5841 days | 4% |
| Kitty | 9/10 | 5841 days | 5% |
| Max | 10/10 | 5843 days | 5% |
| Andy Baker | 9/10 | 5844 days | 5% |
| Francesca Sabat | 8/10 | 5846 days | 5% |
| Robert | 10/10 | 5855 days | 5% |
| Melissa Gillespie | 10/10 | 5855 days | 5% |
| Hetty | 9/10 | 5856 days | 5% |
| Charles | 7/10 | 5857 days | 5% |
| Byleveld | 8/10 | 5857 days | 5% |
| JoseB | 8/10 | 5858 days | 5% |
| MrHebbard | 10/10 | 5858 days | 5% |
| ChristineM | 10/10 | 5858 days | 5% |
| Elrik frau | 10/10 | 5858 days | 5% |
| Louise | 9/10 | 5865 days | 5% |
| Douglas | 9/10 | 5866 days | 5% |
| CSander | 9/10 | 5882 days | 5% |
| Patricia | 8/10 | 5892 days | 5% |
| Dijk | 8/10 | 5896 days | 5% |
| Josefine | 10/10 | 5896 days | 5% |
| Ducolq | 5/10 | 5896 days | 4% |
| Jacques | 8/10 | 5897 days | 5% |
| Carina | 8/10 | 5903 days | 5% |
| Michael | 9/10 | 5934 days | 5% |
| silvia | 8/10 | 5937 days | 5% |
| Anouk | 8/10 | 5937 days | 5% |
| Mat | 9/10 | 5941 days | 5% |
| Paul | 8/10 | 5988 days | 5% |
| Helga | 9/10 | 5999 days | 5% |
| Mikel | 9/10 | 6064 days | 5% |
| Christine | 6/10 | 6072 days | 4% |
| Jim Summers | 9/10 | 6073 days | 5% |
| Franz | 7/10 | 6195 days | 5% |
| Linda and Peter | 10/10 | 6203 days | 5% |
| Mike and Judy | 8/10 | 6204 days | 5% |
| Methers | 9/10 | 6204 days | 5% |
| Denise | 10/10 | 6207 days | 5% |
| Kavanagh | 8/10 | 6207 days | 5% |
| De Wijn | 8/10 | 6210 days | 5% |
| Lisa Jones | 9/10 | 6211 days | 5% |
| Christian | 9/10 | 6211 days | 5% |
| Soren Danning | 8/10 | 6211 days | 5% |
| Jones | 10/10 | 6215 days | 5% |
| Orla Hansen | 10/10 | 6216 days | 5% |
| Bauer | 10/10 | 6222 days | 5% |
| Aharon | 10/10 | 6222 days | 5% |
| D.A. Mulder | 9/10 | 6223 days | 5% |
| Jurg Meister | 8/10 | 6224 days | 5% |
| Sally and David Wallis | 10/10 | 6224 days | 5% |
| Knol | 9/10 | 6225 days | 5% |
| Sue Randall | 8/10 | 6228 days | 5% |
| Cole Penelope | 10/10 | 6228 days | 5% |
| Blenkoe | 6/10 | 6229 days | 4% |
| Erwin de Kleijn | 8/10 | 6229 days | 5% |
| Thomas | 9/10 | 6238 days | 5% |
| Bex | 10/10 | 6251 days | 5% |
| Van Hoof | 9/10 | 6264 days | 5% |
| Tim | 10/10 | 6264 days | 5% |
| Gabriel Faber | 9/10 | 6299 days | 5% |
| Jonkers | 9/10 | 6301 days | 5% |
| Edwin | 10/10 | 6305 days | 5% |
| Lyn Saxon | 10/10 | 6309 days | 5% |
| Wendy Williams | 10/10 | 6316 days | 5% |
| Hans Knappmann | 10/10 | 6426 days | 5% |
| Phillipa | 10/10 | 6534 days | 5% |
| Stefan&Gerte | 9/10 | 6548 days | 5% |
| Cat | 9/10 | 6554 days | 5% |
| TeamFlorida | 10/10 | 6561 days | 5% |
| Jo | 9/10 | 6561 days | 5% |
| Fenke | 9/10 | 6566 days | 5% |
| Bas | 9/10 | 6566 days | 5% |
| Martin Smith | 9/10 | 6571 days | 5% |
| John Beirne | 9/10 | 6578 days | 5% |
| Palle | 9/10 | 6583 days | 5% |
| Anna | 9/10 | 6583 days | 5% |
| Svenja | 10/10 | 6589 days | 5% |
| Shirely | 10/10 | 6589 days | 5% |
| Rogier | 8/10 | 6590 days | 5% |
| Wendy | 8/10 | 6594 days | 5% |
| Kerry | 10/10 | 6599 days | 5% |
| Henrich | 10/10 | 6599 days | 5% |
| Messing | 10/10 | 6602 days | 5% |
| Rolf Kruger | 10/10 | 6602 days | 5% |
| Ian | 8/10 | 6606 days | 5% |
| Peter | 9/10 | 6606 days | 5% |
| Brian | 10/10 | 6606 days | 5% |
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
-4.02% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 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 | -3.96% |
| 198 | -3.98% |
| 199 | -4.00% |
| 200 | -4.02% |
| 201 | -4.04% |
| 202 | -4.06% |
| 203 | -4.08% |
| … | … |
Balancing Adjustment
1.63% 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.