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 Southern Discoveries.
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.
Southern Discoveries
Valid Reviews
203 Valid Reviews
The Southern Discoveries experience has a total of 203 valid reviews. There are no 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 203 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 64 |
|
32% |
| 9/10 | 60 |
|
30% |
| 8/10 | 48 |
|
24% |
| 7/10 | 21 |
|
10% |
| 6/10 | 5 |
|
2% |
| 5/10 | 3 |
|
1% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 2 |
|
1% |
86.60% Average
The raw data average (mean) for all the Southern Discoveries valid reviews is 86.60% and is based on 203 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
186 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 203 valid reviews, the experience has 186 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 186 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 55 |
|
30% |
| 9/10 | 58 |
|
31% |
| 8/10 | 47 |
|
25% |
| 7/10 | 18 |
|
10% |
| 6/10 | 5 |
|
3% |
| 5/10 | 3 |
|
2% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
87.04% Average
The raw data average (mean) for all the Southern Discoveries face-to-face reviews is 87.04% and is based on 186 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
78.35%
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 |
|---|---|---|---|
| Gabriel certeza | 9/10 | 107 days | 100% |
| Chris Creed | 10/10 | 320 days | 96% |
| Hirash | 1/10 | 382 days | 38% |
| Kat | 1/10 | 472 days | 36% |
| Remy and Rebecca Mans | 6/10 | 3220 days | 2% |
| Jocelyn Booy | 9/10 | 3245 days | 2% |
| David Horley | 7/10 | 3259 days | 2% |
| Vallee Manon | 9/10 | 3292 days | 2% |
| Nanda Dyke | 9/10 | 3318 days | 2% |
| victor diego | 7/10 | 3336 days | 2% |
| Samuel Michalak | 10/10 | 3341 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3565 days | 2% |
| Benedikt Hang | 8/10 | 3572 days | 2% |
| Jorge Gonzoleis | 8/10 | 3575 days | 2% |
| Lauren Goebel | 10/10 | 3579 days | 2% |
| Rahel Baufeld | 8/10 | 3587 days | 2% |
| Peter Hodgson | 10/10 | 3613 days | 1% |
| doug fiddes | 10/10 | 3638 days | 1% |
| Dan Wilson | 7/10 | 3655 days | 1% |
| Corrie Medinea | 8/10 | 3663 days | 1% |
| Gracen Verheryden | 10/10 | 3666 days | 1% |
| Jennifer Hoyles | 10/10 | 3670 days | 1% |
| Lenka Korinkova | 7/10 | 3932 days | 1% |
| Rebecca Wharton | 9/10 | 3960 days | 1% |
| Andy Jobst | 8/10 | 4035 days | 1% |
| Rawiri johnston | 10/10 | 4217 days | 0% |
| Marek Heiurich | 7/10 | 4288 days | 0% |
| Matt Weston | 10/10 | 4293 days | 0% |
| Henrik Bours | 8/10 | 4294 days | 0% |
| Svenja Trubenbach | 9/10 | 4294 days | 0% |
| Sheila Galpin | 9/10 | 4308 days | 0% |
| Guillaume | 9/10 | 4319 days | 0% |
| Andreas Jung | 9/10 | 4334 days | 0% |
| Inga Memmen | 10/10 | 4336 days | 0% |
| Alacchi Moustier | 10/10 | 4351 days | 0% |
| Guy David | 9/10 | 4359 days | 0% |
| Michael Rohn | 8/10 | 4366 days | 0% |
| Rainer | 9/10 | 4650 days | 1% |
| Clarissa Hanck | 9/10 | 4650 days | 1% |
| Michael Heuer | 9/10 | 4652 days | 1% |
| Oram Salem | 6/10 | 4652 days | 1% |
| Lea Roser | 9/10 | 4661 days | 1% |
| Jitka Krejcova | 10/10 | 4661 days | 1% |
| Michal Sturma | 9/10 | 4661 days | 1% |
| Stientje van den Heuvel | 8/10 | 4661 days | 1% |
| Tom Somers | 9/10 | 4661 days | 1% |
| Brandon Wells | 8/10 | 4662 days | 1% |
| Tim Vennewold | 9/10 | 4662 days | 1% |
| Katharina | 8/10 | 4662 days | 1% |
| Lorna and Seb | 9/10 | 4678 days | 1% |
| Kristin Denny | 8/10 | 4685 days | 1% |
| Wendy Ward | 10/10 | 4691 days | 1% |
| Michal Maly | 9/10 | 4701 days | 1% |
| Michael Nolan | 10/10 | 4703 days | 1% |
| Hanneke P | 7/10 | 4734 days | 1% |
| Katharina Pape | 8/10 | 4763 days | 1% |
| Camille | 7/10 | 4770 days | 1% |
| Petr Stepanek | 10/10 | 5032 days | 1% |
| Larry Curtiss | 10/10 | 5037 days | 1% |
| nztintin | 10/10 | 5040 days | 1% |
| Marion Hassink | 7/10 | 5046 days | 1% |
| Stam | 6/10 | 5051 days | 1% |
| Ed & Katie Riches | 8/10 | 5052 days | 1% |
| Seth & Carla | 10/10 | 5054 days | 1% |
| Peter Putz | 10/10 | 5054 days | 1% |
| Tadej Ferjan | 10/10 | 5054 days | 1% |
| Nico Welagen | 10/10 | 5055 days | 1% |
| Alan Findlay | 9/10 | 5055 days | 1% |
| Andreas Kristiansen | 10/10 | 5063 days | 1% |
| Arnoldus Bergmans | 10/10 | 5135 days | 1% |
| Kai | 10/10 | 5137 days | 1% |
| Christoph | 9/10 | 5140 days | 1% |
| Jory Singer | 8/10 | 5146 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5151 days | 1% |
| Kimberly St Louis | 10/10 | 5344 days | 1% |
| Lisa Milton | 10/10 | 5367 days | 1% |
| Rob O'Neill | 10/10 | 5377 days | 1% |
| Laura Thrower | 10/10 | 5380 days | 1% |
| Ofir Avimeir | 8/10 | 5384 days | 1% |
| Zachary Steinberg | 9/10 | 5385 days | 1% |
| Brian Jones | 9/10 | 5385 days | 1% |
| Sarah and Uli Glas | 9/10 | 5386 days | 1% |
| Boi Sagarra | 8/10 | 5389 days | 1% |
| John Tinus | 8/10 | 5390 days | 1% |
| Stefanie | 8/10 | 5391 days | 1% |
| Alex | 8/10 | 5393 days | 1% |
| Fredrik Thornell | 8/10 | 5396 days | 1% |
| Siggi Wick | 9/10 | 5397 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5398 days | 1% |
| Estel la Prado | 9/10 | 5400 days | 1% |
| Jeff and Carey Brown | 10/10 | 5405 days | 1% |
| LandJ | 7/10 | 5406 days | 1% |
| Katie Mitchell | 9/10 | 5406 days | 1% |
| Galamez | 9/10 | 5413 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5416 days | 1% |
| Thomas Reidinger | 6/10 | 5420 days | 1% |
| G Elliason | 9/10 | 5420 days | 1% |
| Van den Borne | 9/10 | 5420 days | 1% |
| Laura Hayes | 10/10 | 5421 days | 1% |
| Brian Lind | 7/10 | 5421 days | 1% |
| Chloe Finster | 10/10 | 5421 days | 1% |
| Jol Balder | 8/10 | 5422 days | 1% |
| Robert Haidt | 10/10 | 5427 days | 1% |
| VisualDelight | 10/10 | 5648 days | 1% |
| lindam | 10/10 | 5740 days | 1% |
| Martina Pankova | 9/10 | 5746 days | 1% |
| Neal | 10/10 | 5784 days | 1% |
| Bouwma | 8/10 | 5792 days | 1% |
| Mattias Thorm | 9/10 | 5793 days | 1% |
| Erik Hummelmose | 8/10 | 5795 days | 1% |
| Ian E | 10/10 | 5795 days | 1% |
| Kane Chain | 9/10 | 5816 days | 1% |
| johnma | 10/10 | 5850 days | 1% |
| ingeh | 8/10 | 5854 days | 1% |
| Jerry | 8/10 | 5861 days | 1% |
| Decuq | 10/10 | 5872 days | 1% |
| Carl and Angela Rapihana | 8/10 | 5884 days | 1% |
| Graham Butt | 10/10 | 5884 days | 1% |
| tessac | 9/10 | 5985 days | 1% |
| andriesk | 9/10 | 5986 days | 1% |
| nickm | 10/10 | 6059 days | 1% |
| Sofie | 10/10 | 6074 days | 1% |
| streneer | 10/10 | 6091 days | 1% |
| ElleGermany | 9/10 | 6092 days | 1% |
| JonK | 9/10 | 6092 days | 1% |
| NicolaW | 10/10 | 6096 days | 1% |
| DirkGermany | 10/10 | 6099 days | 1% |
| Bridget | 10/10 | 6109 days | 1% |
| Roy | 9/10 | 6109 days | 1% |
| HenizV | 9/10 | 6114 days | 1% |
| CraigB | 10/10 | 6117 days | 1% |
| familytravellers | 7/10 | 6117 days | 1% |
| Rissmann | 10/10 | 6121 days | 1% |
| Sara Hansson | 10/10 | 6122 days | 1% |
| Frank | 9/10 | 6122 days | 1% |
| KurtL | 8/10 | 6123 days | 1% |
| SteveW | 8/10 | 6124 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6125 days | 1% |
| Joel | 9/10 | 6125 days | 1% |
| Suzie Lechner | 10/10 | 6125 days | 1% |
| KathrinS | 9/10 | 6125 days | 1% |
| Debbie | 7/10 | 6128 days | 1% |
| Stolz | 9/10 | 6128 days | 1% |
| Ulli | 9/10 | 6129 days | 1% |
| Tatjane | 8/10 | 6136 days | 1% |
| Claudia | 8/10 | 6137 days | 1% |
| SimonR | 8/10 | 6139 days | 1% |
| SonjaG | 9/10 | 6139 days | 1% |
| Steve | 7/10 | 6139 days | 1% |
| AdelineC | 8/10 | 6140 days | 1% |
| RobC1 | 7/10 | 6140 days | 1% |
| RichardB1 | 6/10 | 6140 days | 1% |
| JoT | 7/10 | 6140 days | 1% |
| Olly | 10/10 | 6141 days | 1% |
| Klaus | 9/10 | 6141 days | 1% |
| JanetH | 8/10 | 6153 days | 1% |
| StefanieW | 8/10 | 6155 days | 1% |
| schenk | 8/10 | 6155 days | 1% |
| groenewold | 7/10 | 6169 days | 1% |
| Jessy | 5/10 | 6169 days | 1% |
| Wilco | 7/10 | 6177 days | 1% |
| Bernd | 8/10 | 6178 days | 1% |
| Ruben | 8/10 | 6178 days | 1% |
| Paul | 10/10 | 6181 days | 1% |
| Loren | 10/10 | 6209 days | 1% |
| DavidO | 8/10 | 6212 days | 1% |
| Peter | 9/10 | 6217 days | 1% |
| David | 10/10 | 6218 days | 1% |
| Kylie | 8/10 | 6222 days | 1% |
| Ursula | 9/10 | 6235 days | 1% |
| Carrie | 8/10 | 6251 days | 1% |
| David | 10/10 | 6282 days | 1% |
| Howard | 9/10 | 6300 days | 1% |
| Chris | 8/10 | 6482 days | 1% |
| Anthony | 8/10 | 6485 days | 1% |
| Sandra Verbaarschot | 10/10 | 6485 days | 1% |
| Omer Harron | 10/10 | 6485 days | 1% |
| angela | 9/10 | 6488 days | 1% |
| Kerstin Brantryd | 5/10 | 6492 days | 1% |
| Sanne | 10/10 | 6498 days | 1% |
| Tessa McCormick | 9/10 | 6502 days | 1% |
| Sally and David Wallis | 10/10 | 6505 days | 1% |
| Martens | 8/10 | 6506 days | 1% |
| Dan Adamson | 9/10 | 6524 days | 1% |
| Ben | 7/10 | 6590 days | 1% |
| Kirsty Ranger | 9/10 | 6664 days | 1% |
| Andy Chapman | 8/10 | 6706 days | 1% |
| ranker_34 | 5/10 | 6706 days | 1% |
| Jo | 9/10 | 6706 days | 1% |
| Matous | 10/10 | 6825 days | 1% |
| Stefan&Gerte | 7/10 | 6828 days | 1% |
| Jenny | 9/10 | 6828 days | 1% |
| Paul Yacoumis | 8/10 | 6832 days | 1% |
| Deloraine | 7/10 | 6841 days | 1% |
| Denise Nick | 9/10 | 6843 days | 1% |
| Daniel | 10/10 | 6848 days | 1% |
| Martin Smith | 8/10 | 6852 days | 1% |
| Susan | 8/10 | 6855 days | 1% |
| sebastian | 10/10 | 6856 days | 1% |
| ranker_110 | 9/10 | 6863 days | 1% |
| Stefan | 8/10 | 6865 days | 1% |
| Svenja | 7/10 | 6870 days | 1% |
| Hirsh | 10/10 | 6875 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 Southern Discoveries experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-1.70% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 days. However the Southern Discoveries 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 Southern Discoveries experience has been adjusted for 84 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 81 | -1.64% |
| 82 | -1.66% |
| 83 | -1.68% |
| 84 | -1.70% |
| 85 | -1.72% |
| 86 | -1.74% |
| 87 | -1.76% |
| … | … |
Balancing Adjustment
4.03% 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
81%
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.