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
78.34%
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 | 105 days | 100% |
| Chris Creed | 10/10 | 317 days | 96% |
| Hirash | 1/10 | 379 days | 38% |
| Kat | 1/10 | 470 days | 36% |
| Remy and Rebecca Mans | 6/10 | 3217 days | 2% |
| Jocelyn Booy | 9/10 | 3242 days | 2% |
| David Horley | 7/10 | 3256 days | 2% |
| Vallee Manon | 9/10 | 3289 days | 2% |
| Nanda Dyke | 9/10 | 3315 days | 2% |
| victor diego | 7/10 | 3333 days | 2% |
| Samuel Michalak | 10/10 | 3338 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3562 days | 2% |
| Benedikt Hang | 8/10 | 3569 days | 2% |
| Jorge Gonzoleis | 8/10 | 3572 days | 2% |
| Lauren Goebel | 10/10 | 3576 days | 2% |
| Rahel Baufeld | 8/10 | 3584 days | 2% |
| Peter Hodgson | 10/10 | 3610 days | 1% |
| doug fiddes | 10/10 | 3635 days | 1% |
| Dan Wilson | 7/10 | 3652 days | 1% |
| Corrie Medinea | 8/10 | 3660 days | 1% |
| Gracen Verheryden | 10/10 | 3663 days | 1% |
| Jennifer Hoyles | 10/10 | 3667 days | 1% |
| Lenka Korinkova | 7/10 | 3929 days | 1% |
| Rebecca Wharton | 9/10 | 3957 days | 1% |
| Andy Jobst | 8/10 | 4032 days | 1% |
| Rawiri johnston | 10/10 | 4215 days | 0% |
| Marek Heiurich | 7/10 | 4285 days | 0% |
| Matt Weston | 10/10 | 4290 days | 0% |
| Henrik Bours | 8/10 | 4291 days | 0% |
| Svenja Trubenbach | 9/10 | 4291 days | 0% |
| Sheila Galpin | 9/10 | 4305 days | 0% |
| Guillaume | 9/10 | 4316 days | 0% |
| Andreas Jung | 9/10 | 4331 days | 0% |
| Inga Memmen | 10/10 | 4333 days | 0% |
| Alacchi Moustier | 10/10 | 4348 days | 0% |
| Guy David | 9/10 | 4356 days | 0% |
| Michael Rohn | 8/10 | 4363 days | 0% |
| Rainer | 9/10 | 4647 days | 1% |
| Clarissa Hanck | 9/10 | 4647 days | 1% |
| Michael Heuer | 9/10 | 4649 days | 1% |
| Oram Salem | 6/10 | 4649 days | 1% |
| Lea Roser | 9/10 | 4658 days | 1% |
| Jitka Krejcova | 10/10 | 4658 days | 1% |
| Michal Sturma | 9/10 | 4658 days | 1% |
| Stientje van den Heuvel | 8/10 | 4658 days | 1% |
| Tom Somers | 9/10 | 4658 days | 1% |
| Brandon Wells | 8/10 | 4659 days | 1% |
| Tim Vennewold | 9/10 | 4659 days | 1% |
| Katharina | 8/10 | 4659 days | 1% |
| Lorna and Seb | 9/10 | 4675 days | 1% |
| Kristin Denny | 8/10 | 4682 days | 1% |
| Wendy Ward | 10/10 | 4688 days | 1% |
| Michal Maly | 9/10 | 4698 days | 1% |
| Michael Nolan | 10/10 | 4700 days | 1% |
| Hanneke P | 7/10 | 4731 days | 1% |
| Katharina Pape | 8/10 | 4760 days | 1% |
| Camille | 7/10 | 4767 days | 1% |
| Petr Stepanek | 10/10 | 5029 days | 1% |
| Larry Curtiss | 10/10 | 5034 days | 1% |
| nztintin | 10/10 | 5037 days | 1% |
| Marion Hassink | 7/10 | 5043 days | 1% |
| Stam | 6/10 | 5048 days | 1% |
| Ed & Katie Riches | 8/10 | 5049 days | 1% |
| Seth & Carla | 10/10 | 5051 days | 1% |
| Peter Putz | 10/10 | 5051 days | 1% |
| Tadej Ferjan | 10/10 | 5051 days | 1% |
| Nico Welagen | 10/10 | 5052 days | 1% |
| Alan Findlay | 9/10 | 5052 days | 1% |
| Andreas Kristiansen | 10/10 | 5060 days | 1% |
| Arnoldus Bergmans | 10/10 | 5132 days | 1% |
| Kai | 10/10 | 5134 days | 1% |
| Christoph | 9/10 | 5137 days | 1% |
| Jory Singer | 8/10 | 5143 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5148 days | 1% |
| Kimberly St Louis | 10/10 | 5342 days | 1% |
| Lisa Milton | 10/10 | 5365 days | 1% |
| Rob O'Neill | 10/10 | 5374 days | 1% |
| Laura Thrower | 10/10 | 5377 days | 1% |
| Ofir Avimeir | 8/10 | 5381 days | 1% |
| Zachary Steinberg | 9/10 | 5382 days | 1% |
| Brian Jones | 9/10 | 5382 days | 1% |
| Sarah and Uli Glas | 9/10 | 5383 days | 1% |
| Boi Sagarra | 8/10 | 5386 days | 1% |
| John Tinus | 8/10 | 5387 days | 1% |
| Stefanie | 8/10 | 5388 days | 1% |
| Alex | 8/10 | 5390 days | 1% |
| Fredrik Thornell | 8/10 | 5393 days | 1% |
| Siggi Wick | 9/10 | 5394 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5395 days | 1% |
| Estel la Prado | 9/10 | 5397 days | 1% |
| Jeff and Carey Brown | 10/10 | 5402 days | 1% |
| LandJ | 7/10 | 5403 days | 1% |
| Katie Mitchell | 9/10 | 5403 days | 1% |
| Galamez | 9/10 | 5410 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5413 days | 1% |
| Thomas Reidinger | 6/10 | 5417 days | 1% |
| G Elliason | 9/10 | 5417 days | 1% |
| Van den Borne | 9/10 | 5417 days | 1% |
| Laura Hayes | 10/10 | 5418 days | 1% |
| Brian Lind | 7/10 | 5418 days | 1% |
| Chloe Finster | 10/10 | 5418 days | 1% |
| Jol Balder | 8/10 | 5419 days | 1% |
| Robert Haidt | 10/10 | 5424 days | 1% |
| VisualDelight | 10/10 | 5646 days | 1% |
| lindam | 10/10 | 5737 days | 1% |
| Martina Pankova | 9/10 | 5743 days | 1% |
| Neal | 10/10 | 5781 days | 1% |
| Bouwma | 8/10 | 5789 days | 1% |
| Mattias Thorm | 9/10 | 5790 days | 1% |
| Erik Hummelmose | 8/10 | 5792 days | 1% |
| Ian E | 10/10 | 5792 days | 1% |
| Kane Chain | 9/10 | 5813 days | 1% |
| johnma | 10/10 | 5847 days | 1% |
| ingeh | 8/10 | 5851 days | 1% |
| Jerry | 8/10 | 5858 days | 1% |
| Decuq | 10/10 | 5869 days | 1% |
| Carl and Angela Rapihana | 8/10 | 5881 days | 1% |
| Graham Butt | 10/10 | 5881 days | 1% |
| tessac | 9/10 | 5983 days | 1% |
| andriesk | 9/10 | 5984 days | 1% |
| nickm | 10/10 | 6057 days | 1% |
| Sofie | 10/10 | 6072 days | 1% |
| streneer | 10/10 | 6089 days | 1% |
| ElleGermany | 9/10 | 6090 days | 1% |
| JonK | 9/10 | 6090 days | 1% |
| NicolaW | 10/10 | 6094 days | 1% |
| DirkGermany | 10/10 | 6097 days | 1% |
| Bridget | 10/10 | 6106 days | 1% |
| Roy | 9/10 | 6106 days | 1% |
| HenizV | 9/10 | 6111 days | 1% |
| CraigB | 10/10 | 6114 days | 1% |
| familytravellers | 7/10 | 6114 days | 1% |
| Rissmann | 10/10 | 6118 days | 1% |
| Sara Hansson | 10/10 | 6119 days | 1% |
| Frank | 9/10 | 6119 days | 1% |
| KurtL | 8/10 | 6120 days | 1% |
| SteveW | 8/10 | 6121 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6122 days | 1% |
| Joel | 9/10 | 6122 days | 1% |
| Suzie Lechner | 10/10 | 6122 days | 1% |
| KathrinS | 9/10 | 6122 days | 1% |
| Debbie | 7/10 | 6125 days | 1% |
| Stolz | 9/10 | 6125 days | 1% |
| Ulli | 9/10 | 6126 days | 1% |
| Tatjane | 8/10 | 6133 days | 1% |
| Claudia | 8/10 | 6134 days | 1% |
| SimonR | 8/10 | 6136 days | 1% |
| SonjaG | 9/10 | 6136 days | 1% |
| Steve | 7/10 | 6136 days | 1% |
| AdelineC | 8/10 | 6137 days | 1% |
| RobC1 | 7/10 | 6137 days | 1% |
| RichardB1 | 6/10 | 6137 days | 1% |
| JoT | 7/10 | 6137 days | 1% |
| Olly | 10/10 | 6138 days | 1% |
| Klaus | 9/10 | 6138 days | 1% |
| JanetH | 8/10 | 6150 days | 1% |
| StefanieW | 8/10 | 6152 days | 1% |
| schenk | 8/10 | 6152 days | 1% |
| groenewold | 7/10 | 6166 days | 1% |
| Jessy | 5/10 | 6166 days | 1% |
| Wilco | 7/10 | 6174 days | 1% |
| Bernd | 8/10 | 6175 days | 1% |
| Ruben | 8/10 | 6175 days | 1% |
| Paul | 10/10 | 6178 days | 1% |
| Loren | 10/10 | 6206 days | 1% |
| DavidO | 8/10 | 6209 days | 1% |
| Peter | 9/10 | 6214 days | 1% |
| David | 10/10 | 6215 days | 1% |
| Kylie | 8/10 | 6219 days | 1% |
| Ursula | 9/10 | 6232 days | 1% |
| Carrie | 8/10 | 6248 days | 1% |
| David | 10/10 | 6279 days | 1% |
| Howard | 9/10 | 6297 days | 1% |
| Chris | 8/10 | 6479 days | 1% |
| Anthony | 8/10 | 6482 days | 1% |
| Sandra Verbaarschot | 10/10 | 6482 days | 1% |
| Omer Harron | 10/10 | 6482 days | 1% |
| angela | 9/10 | 6485 days | 1% |
| Kerstin Brantryd | 5/10 | 6489 days | 1% |
| Sanne | 10/10 | 6495 days | 1% |
| Tessa McCormick | 9/10 | 6499 days | 1% |
| Sally and David Wallis | 10/10 | 6502 days | 1% |
| Martens | 8/10 | 6503 days | 1% |
| Dan Adamson | 9/10 | 6521 days | 1% |
| Ben | 7/10 | 6587 days | 1% |
| Kirsty Ranger | 9/10 | 6662 days | 1% |
| Andy Chapman | 8/10 | 6704 days | 1% |
| ranker_34 | 5/10 | 6704 days | 1% |
| Jo | 9/10 | 6704 days | 1% |
| Matous | 10/10 | 6823 days | 1% |
| Stefan&Gerte | 7/10 | 6826 days | 1% |
| Jenny | 9/10 | 6826 days | 1% |
| Paul Yacoumis | 8/10 | 6830 days | 1% |
| Deloraine | 7/10 | 6839 days | 1% |
| Denise Nick | 9/10 | 6841 days | 1% |
| Daniel | 10/10 | 6846 days | 1% |
| Martin Smith | 8/10 | 6849 days | 1% |
| Susan | 8/10 | 6852 days | 1% |
| sebastian | 10/10 | 6853 days | 1% |
| ranker_110 | 9/10 | 6860 days | 1% |
| Stefan | 8/10 | 6862 days | 1% |
| Svenja | 7/10 | 6867 days | 1% |
| Hirsh | 10/10 | 6872 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
-1.64% 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 81 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 78 | -1.58% |
| 79 | -1.60% |
| 80 | -1.62% |
| 81 | -1.64% |
| 82 | -1.66% |
| 83 | -1.68% |
| 84 | -1.70% |
| … | … |
Balancing Adjustment
4.02% 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.