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 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 204 reviews. There are 203 valid reviews that are included when calculating the ranking score and 1 invalid review 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
79.23%
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 | 271 days | 100% |
| Chris Creed | 10/10 | 483 days | 91% |
| Hirash | 1/10 | 545 days | 35% |
| Kat | 1/10 | 636 days | 33% |
| Remy and Rebecca Mans | 6/10 | 3383 days | 1% |
| Jocelyn Booy | 9/10 | 3408 days | 2% |
| David Horley | 7/10 | 3422 days | 1% |
| Vallee Manon | 9/10 | 3455 days | 2% |
| Nanda Dyke | 9/10 | 3481 days | 1% |
| victor diego | 7/10 | 3499 days | 1% |
| Samuel Michalak | 10/10 | 3504 days | 1% |
| Laura Munguira Vadillo | 10/10 | 3728 days | 1% |
| Benedikt Hang | 8/10 | 3735 days | 1% |
| Jorge Gonzoleis | 8/10 | 3738 days | 1% |
| Lauren Goebel | 10/10 | 3742 days | 1% |
| Rahel Baufeld | 8/10 | 3750 days | 1% |
| Peter Hodgson | 10/10 | 3776 days | 1% |
| doug fiddes | 10/10 | 3802 days | 1% |
| Dan Wilson | 7/10 | 3818 days | 1% |
| Corrie Medinea | 8/10 | 3826 days | 1% |
| Gracen Verheryden | 10/10 | 3829 days | 1% |
| Jennifer Hoyles | 10/10 | 3833 days | 1% |
| Lenka Korinkova | 7/10 | 4095 days | 0% |
| Rebecca Wharton | 9/10 | 4123 days | 0% |
| Andy Jobst | 8/10 | 4198 days | 0% |
| Rawiri johnston | 10/10 | 4381 days | 1% |
| Marek Heiurich | 7/10 | 4451 days | 1% |
| Matt Weston | 10/10 | 4456 days | 1% |
| Henrik Bours | 8/10 | 4457 days | 1% |
| Svenja Trubenbach | 9/10 | 4457 days | 1% |
| Sheila Galpin | 9/10 | 4471 days | 1% |
| Guillaume | 9/10 | 4482 days | 1% |
| Andreas Jung | 9/10 | 4497 days | 1% |
| Inga Memmen | 10/10 | 4499 days | 1% |
| Alacchi Moustier | 10/10 | 4514 days | 1% |
| Guy David | 9/10 | 4522 days | 1% |
| Michael Rohn | 8/10 | 4529 days | 1% |
| Rainer | 9/10 | 4813 days | 1% |
| Clarissa Hanck | 9/10 | 4813 days | 1% |
| Michael Heuer | 9/10 | 4815 days | 1% |
| Oram Salem | 6/10 | 4815 days | 1% |
| Lea Roser | 9/10 | 4824 days | 1% |
| Jitka Krejcova | 10/10 | 4824 days | 1% |
| Michal Sturma | 9/10 | 4824 days | 1% |
| Stientje van den Heuvel | 8/10 | 4824 days | 1% |
| Tom Somers | 9/10 | 4824 days | 1% |
| Brandon Wells | 8/10 | 4825 days | 1% |
| Tim Vennewold | 9/10 | 4825 days | 1% |
| Katharina | 8/10 | 4825 days | 1% |
| Lorna and Seb | 9/10 | 4841 days | 1% |
| Kristin Denny | 8/10 | 4848 days | 1% |
| Wendy Ward | 10/10 | 4854 days | 1% |
| Michal Maly | 9/10 | 4864 days | 1% |
| Michael Nolan | 10/10 | 4866 days | 1% |
| Hanneke P | 7/10 | 4897 days | 1% |
| Katharina Pape | 8/10 | 4926 days | 1% |
| Camille | 7/10 | 4933 days | 1% |
| Petr Stepanek | 10/10 | 5195 days | 1% |
| Larry Curtiss | 10/10 | 5200 days | 1% |
| nztintin | 10/10 | 5203 days | 1% |
| Marion Hassink | 7/10 | 5209 days | 1% |
| Stam | 6/10 | 5214 days | 1% |
| Ed & Katie Riches | 8/10 | 5215 days | 1% |
| Seth & Carla | 10/10 | 5217 days | 1% |
| Peter Putz | 10/10 | 5217 days | 1% |
| Tadej Ferjan | 10/10 | 5217 days | 1% |
| Nico Welagen | 10/10 | 5218 days | 1% |
| Alan Findlay | 9/10 | 5218 days | 1% |
| Andreas Kristiansen | 10/10 | 5226 days | 1% |
| Arnoldus Bergmans | 10/10 | 5298 days | 1% |
| Kai | 10/10 | 5300 days | 1% |
| Christoph | 9/10 | 5303 days | 1% |
| Jory Singer | 8/10 | 5309 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5314 days | 1% |
| Kimberly St Louis | 10/10 | 5508 days | 1% |
| Lisa Milton | 10/10 | 5531 days | 1% |
| Rob O'Neill | 10/10 | 5540 days | 1% |
| Laura Thrower | 10/10 | 5543 days | 1% |
| Ofir Avimeir | 8/10 | 5547 days | 1% |
| Zachary Steinberg | 9/10 | 5548 days | 1% |
| Brian Jones | 9/10 | 5548 days | 1% |
| Sarah and Uli Glas | 9/10 | 5549 days | 1% |
| Boi Sagarra | 8/10 | 5552 days | 1% |
| John Tinus | 8/10 | 5553 days | 1% |
| Stefanie | 8/10 | 5554 days | 1% |
| Alex | 8/10 | 5556 days | 1% |
| Fredrik Thornell | 8/10 | 5559 days | 1% |
| Siggi Wick | 9/10 | 5560 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5561 days | 1% |
| Estel la Prado | 9/10 | 5563 days | 1% |
| Jeff and Carey Brown | 10/10 | 5568 days | 1% |
| LandJ | 7/10 | 5569 days | 1% |
| Katie Mitchell | 9/10 | 5569 days | 1% |
| Galamez | 9/10 | 5576 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5579 days | 1% |
| Thomas Reidinger | 6/10 | 5583 days | 1% |
| G Elliason | 9/10 | 5583 days | 1% |
| Van den Borne | 9/10 | 5583 days | 1% |
| Laura Hayes | 10/10 | 5584 days | 1% |
| Brian Lind | 7/10 | 5584 days | 1% |
| Chloe Finster | 10/10 | 5584 days | 1% |
| Jol Balder | 8/10 | 5585 days | 1% |
| Robert Haidt | 10/10 | 5590 days | 1% |
| VisualDelight | 10/10 | 5812 days | 1% |
| lindam | 10/10 | 5903 days | 1% |
| Martina Pankova | 9/10 | 5909 days | 1% |
| Neal | 10/10 | 5947 days | 1% |
| Bouwma | 8/10 | 5955 days | 1% |
| Mattias Thorm | 9/10 | 5956 days | 1% |
| Erik Hummelmose | 8/10 | 5958 days | 1% |
| Ian E | 10/10 | 5958 days | 1% |
| Kane Chain | 9/10 | 5979 days | 1% |
| johnma | 10/10 | 6013 days | 1% |
| ingeh | 8/10 | 6017 days | 1% |
| Jerry | 8/10 | 6024 days | 1% |
| Decuq | 10/10 | 6035 days | 1% |
| Carl and Angela Rapihana | 8/10 | 6047 days | 1% |
| Graham Butt | 10/10 | 6047 days | 1% |
| tessac | 9/10 | 6149 days | 1% |
| andriesk | 9/10 | 6150 days | 1% |
| nickm | 10/10 | 6223 days | 1% |
| Sofie | 10/10 | 6238 days | 1% |
| streneer | 10/10 | 6255 days | 1% |
| ElleGermany | 9/10 | 6256 days | 1% |
| JonK | 9/10 | 6256 days | 1% |
| NicolaW | 10/10 | 6260 days | 1% |
| DirkGermany | 10/10 | 6263 days | 1% |
| Bridget | 10/10 | 6272 days | 1% |
| Roy | 9/10 | 6272 days | 1% |
| HenizV | 9/10 | 6278 days | 1% |
| CraigB | 10/10 | 6280 days | 1% |
| familytravellers | 7/10 | 6280 days | 1% |
| Rissmann | 10/10 | 6284 days | 1% |
| Sara Hansson | 10/10 | 6285 days | 1% |
| Frank | 9/10 | 6286 days | 1% |
| KurtL | 8/10 | 6286 days | 1% |
| SteveW | 8/10 | 6287 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6288 days | 1% |
| Joel | 9/10 | 6288 days | 1% |
| Suzie Lechner | 10/10 | 6288 days | 1% |
| KathrinS | 9/10 | 6288 days | 1% |
| Debbie | 7/10 | 6292 days | 1% |
| Stolz | 9/10 | 6292 days | 1% |
| Ulli | 9/10 | 6292 days | 1% |
| Tatjane | 8/10 | 6300 days | 1% |
| Claudia | 8/10 | 6300 days | 1% |
| SimonR | 8/10 | 6302 days | 1% |
| SonjaG | 9/10 | 6302 days | 1% |
| Steve | 7/10 | 6302 days | 1% |
| AdelineC | 8/10 | 6303 days | 1% |
| RobC1 | 7/10 | 6303 days | 1% |
| RichardB1 | 6/10 | 6303 days | 1% |
| JoT | 7/10 | 6303 days | 1% |
| Olly | 10/10 | 6304 days | 1% |
| Klaus | 9/10 | 6305 days | 1% |
| JanetH | 8/10 | 6316 days | 1% |
| StefanieW | 8/10 | 6318 days | 1% |
| schenk | 8/10 | 6319 days | 1% |
| groenewold | 7/10 | 6333 days | 1% |
| Jessy | 5/10 | 6333 days | 0% |
| Wilco | 7/10 | 6340 days | 1% |
| Bernd | 8/10 | 6341 days | 1% |
| Ruben | 8/10 | 6341 days | 1% |
| Paul | 10/10 | 6345 days | 1% |
| Loren | 10/10 | 6372 days | 1% |
| DavidO | 8/10 | 6375 days | 1% |
| Peter | 9/10 | 6381 days | 1% |
| David | 10/10 | 6381 days | 1% |
| Kylie | 8/10 | 6385 days | 1% |
| Ursula | 9/10 | 6398 days | 1% |
| Carrie | 8/10 | 6415 days | 1% |
| David | 10/10 | 6446 days | 1% |
| Howard | 9/10 | 6464 days | 1% |
| Chris | 8/10 | 6645 days | 1% |
| Anthony | 8/10 | 6648 days | 1% |
| Sandra Verbaarschot | 10/10 | 6648 days | 1% |
| Omer Harron | 10/10 | 6648 days | 1% |
| angela | 9/10 | 6651 days | 1% |
| Kerstin Brantryd | 5/10 | 6655 days | 0% |
| Sanne | 10/10 | 6661 days | 1% |
| Tessa McCormick | 9/10 | 6665 days | 1% |
| Sally and David Wallis | 10/10 | 6668 days | 1% |
| Martens | 8/10 | 6669 days | 1% |
| Dan Adamson | 9/10 | 6687 days | 1% |
| Ben | 7/10 | 6753 days | 1% |
| Kirsty Ranger | 9/10 | 6828 days | 1% |
| Andy Chapman | 8/10 | 6870 days | 1% |
| ranker_34 | 5/10 | 6870 days | 0% |
| Jo | 9/10 | 6870 days | 1% |
| Matous | 10/10 | 6989 days | 1% |
| Stefan&Gerte | 7/10 | 6992 days | 1% |
| Jenny | 9/10 | 6992 days | 1% |
| Paul Yacoumis | 8/10 | 6996 days | 1% |
| Deloraine | 7/10 | 7005 days | 1% |
| Denise Nick | 9/10 | 7007 days | 1% |
| Daniel | 10/10 | 7012 days | 1% |
| Martin Smith | 8/10 | 7015 days | 1% |
| Susan | 8/10 | 7018 days | 1% |
| sebastian | 10/10 | 7019 days | 1% |
| ranker_110 | 9/10 | 7026 days | 1% |
| Stefan | 8/10 | 7028 days | 1% |
| Svenja | 7/10 | 7033 days | 1% |
| Hirsh | 10/10 | 7038 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
-2.49% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 104 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 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -2.45% |
| 198 | -2.47% |
| 199 | -2.48% |
| 200 | -2.49% |
| 201 | -2.50% |
| 202 | -2.52% |
| 203 | -2.53% |
| … | … |
Balancing Adjustment
4.01% 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.