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 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
79.33%
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 | 292 days | 100% |
| Chris Creed | 10/10 | 504 days | 91% |
| Hirash | 1/10 | 566 days | 35% |
| Kat | 1/10 | 657 days | 32% |
| Remy and Rebecca Mans | 6/10 | 3404 days | 1% |
| Jocelyn Booy | 9/10 | 3429 days | 2% |
| David Horley | 7/10 | 3443 days | 1% |
| Vallee Manon | 9/10 | 3476 days | 2% |
| Nanda Dyke | 9/10 | 3502 days | 1% |
| victor diego | 7/10 | 3520 days | 1% |
| Samuel Michalak | 10/10 | 3525 days | 1% |
| Laura Munguira Vadillo | 10/10 | 3749 days | 1% |
| Benedikt Hang | 8/10 | 3756 days | 1% |
| Jorge Gonzoleis | 8/10 | 3759 days | 1% |
| Lauren Goebel | 10/10 | 3763 days | 1% |
| Rahel Baufeld | 8/10 | 3771 days | 1% |
| Peter Hodgson | 10/10 | 3797 days | 1% |
| doug fiddes | 10/10 | 3823 days | 1% |
| Dan Wilson | 7/10 | 3839 days | 1% |
| Corrie Medinea | 8/10 | 3847 days | 1% |
| Gracen Verheryden | 10/10 | 3850 days | 1% |
| Jennifer Hoyles | 10/10 | 3854 days | 1% |
| Lenka Korinkova | 7/10 | 4116 days | 0% |
| Rebecca Wharton | 9/10 | 4144 days | 0% |
| Andy Jobst | 8/10 | 4219 days | 0% |
| Rawiri johnston | 10/10 | 4402 days | 1% |
| Marek Heiurich | 7/10 | 4472 days | 1% |
| Matt Weston | 10/10 | 4477 days | 1% |
| Henrik Bours | 8/10 | 4478 days | 1% |
| Svenja Trubenbach | 9/10 | 4478 days | 1% |
| Sheila Galpin | 9/10 | 4492 days | 1% |
| Guillaume | 9/10 | 4503 days | 1% |
| Andreas Jung | 9/10 | 4518 days | 1% |
| Inga Memmen | 10/10 | 4520 days | 1% |
| Alacchi Moustier | 10/10 | 4535 days | 1% |
| Guy David | 9/10 | 4543 days | 1% |
| Michael Rohn | 8/10 | 4550 days | 1% |
| Rainer | 9/10 | 4834 days | 1% |
| Clarissa Hanck | 9/10 | 4834 days | 1% |
| Michael Heuer | 9/10 | 4836 days | 1% |
| Oram Salem | 6/10 | 4836 days | 1% |
| Lea Roser | 9/10 | 4845 days | 1% |
| Jitka Krejcova | 10/10 | 4845 days | 1% |
| Michal Sturma | 9/10 | 4845 days | 1% |
| Stientje van den Heuvel | 8/10 | 4845 days | 1% |
| Tom Somers | 9/10 | 4845 days | 1% |
| Brandon Wells | 8/10 | 4846 days | 1% |
| Tim Vennewold | 9/10 | 4846 days | 1% |
| Katharina | 8/10 | 4846 days | 1% |
| Lorna and Seb | 9/10 | 4862 days | 1% |
| Kristin Denny | 8/10 | 4869 days | 1% |
| Wendy Ward | 10/10 | 4875 days | 1% |
| Michal Maly | 9/10 | 4885 days | 1% |
| Michael Nolan | 10/10 | 4887 days | 1% |
| Hanneke P | 7/10 | 4918 days | 1% |
| Katharina Pape | 8/10 | 4947 days | 1% |
| Camille | 7/10 | 4954 days | 1% |
| Petr Stepanek | 10/10 | 5216 days | 1% |
| Larry Curtiss | 10/10 | 5221 days | 1% |
| nztintin | 10/10 | 5224 days | 1% |
| Marion Hassink | 7/10 | 5230 days | 1% |
| Stam | 6/10 | 5235 days | 1% |
| Ed & Katie Riches | 8/10 | 5236 days | 1% |
| Seth & Carla | 10/10 | 5238 days | 1% |
| Peter Putz | 10/10 | 5238 days | 1% |
| Tadej Ferjan | 10/10 | 5238 days | 1% |
| Nico Welagen | 10/10 | 5239 days | 1% |
| Alan Findlay | 9/10 | 5239 days | 1% |
| Andreas Kristiansen | 10/10 | 5247 days | 1% |
| Arnoldus Bergmans | 10/10 | 5319 days | 1% |
| Kai | 10/10 | 5321 days | 1% |
| Christoph | 9/10 | 5324 days | 1% |
| Jory Singer | 8/10 | 5330 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5335 days | 1% |
| Kimberly St Louis | 10/10 | 5529 days | 1% |
| Lisa Milton | 10/10 | 5552 days | 1% |
| Rob O'Neill | 10/10 | 5561 days | 1% |
| Laura Thrower | 10/10 | 5564 days | 1% |
| Ofir Avimeir | 8/10 | 5568 days | 1% |
| Zachary Steinberg | 9/10 | 5569 days | 1% |
| Brian Jones | 9/10 | 5569 days | 1% |
| Sarah and Uli Glas | 9/10 | 5570 days | 1% |
| Boi Sagarra | 8/10 | 5573 days | 1% |
| John Tinus | 8/10 | 5574 days | 1% |
| Stefanie | 8/10 | 5575 days | 1% |
| Alex | 8/10 | 5577 days | 1% |
| Fredrik Thornell | 8/10 | 5580 days | 1% |
| Siggi Wick | 9/10 | 5581 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5582 days | 1% |
| Estel la Prado | 9/10 | 5584 days | 1% |
| Jeff and Carey Brown | 10/10 | 5589 days | 1% |
| LandJ | 7/10 | 5590 days | 1% |
| Katie Mitchell | 9/10 | 5590 days | 1% |
| Galamez | 9/10 | 5597 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5600 days | 1% |
| Thomas Reidinger | 6/10 | 5604 days | 1% |
| G Elliason | 9/10 | 5604 days | 1% |
| Van den Borne | 9/10 | 5604 days | 1% |
| Laura Hayes | 10/10 | 5605 days | 1% |
| Brian Lind | 7/10 | 5605 days | 1% |
| Chloe Finster | 10/10 | 5605 days | 1% |
| Jol Balder | 8/10 | 5606 days | 1% |
| Robert Haidt | 10/10 | 5611 days | 1% |
| VisualDelight | 10/10 | 5833 days | 1% |
| lindam | 10/10 | 5924 days | 1% |
| Martina Pankova | 9/10 | 5930 days | 1% |
| Neal | 10/10 | 5968 days | 1% |
| Bouwma | 8/10 | 5976 days | 1% |
| Mattias Thorm | 9/10 | 5977 days | 1% |
| Erik Hummelmose | 8/10 | 5979 days | 1% |
| Ian E | 10/10 | 5979 days | 1% |
| Kane Chain | 9/10 | 6000 days | 1% |
| johnma | 10/10 | 6034 days | 1% |
| ingeh | 8/10 | 6038 days | 1% |
| Jerry | 8/10 | 6045 days | 1% |
| Decuq | 10/10 | 6056 days | 1% |
| Carl and Angela Rapihana | 8/10 | 6068 days | 1% |
| Graham Butt | 10/10 | 6068 days | 1% |
| tessac | 9/10 | 6170 days | 1% |
| andriesk | 9/10 | 6171 days | 1% |
| nickm | 10/10 | 6244 days | 1% |
| Sofie | 10/10 | 6259 days | 1% |
| streneer | 10/10 | 6276 days | 1% |
| ElleGermany | 9/10 | 6277 days | 1% |
| JonK | 9/10 | 6277 days | 1% |
| NicolaW | 10/10 | 6281 days | 1% |
| DirkGermany | 10/10 | 6284 days | 1% |
| Bridget | 10/10 | 6293 days | 1% |
| Roy | 9/10 | 6293 days | 1% |
| HenizV | 9/10 | 6299 days | 1% |
| CraigB | 10/10 | 6301 days | 1% |
| familytravellers | 7/10 | 6301 days | 1% |
| Rissmann | 10/10 | 6305 days | 1% |
| Sara Hansson | 10/10 | 6306 days | 1% |
| Frank | 9/10 | 6306 days | 1% |
| KurtL | 8/10 | 6307 days | 1% |
| SteveW | 8/10 | 6308 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6309 days | 1% |
| Joel | 9/10 | 6309 days | 1% |
| Suzie Lechner | 10/10 | 6309 days | 1% |
| KathrinS | 9/10 | 6309 days | 1% |
| Debbie | 7/10 | 6313 days | 1% |
| Stolz | 9/10 | 6313 days | 1% |
| Ulli | 9/10 | 6313 days | 1% |
| Tatjane | 8/10 | 6320 days | 1% |
| Claudia | 8/10 | 6321 days | 1% |
| SimonR | 8/10 | 6323 days | 1% |
| SonjaG | 9/10 | 6323 days | 1% |
| Steve | 7/10 | 6323 days | 1% |
| AdelineC | 8/10 | 6324 days | 1% |
| RobC1 | 7/10 | 6324 days | 1% |
| RichardB1 | 6/10 | 6324 days | 1% |
| JoT | 7/10 | 6324 days | 1% |
| Olly | 10/10 | 6325 days | 1% |
| Klaus | 9/10 | 6326 days | 1% |
| JanetH | 8/10 | 6337 days | 1% |
| StefanieW | 8/10 | 6339 days | 1% |
| schenk | 8/10 | 6340 days | 1% |
| groenewold | 7/10 | 6354 days | 1% |
| Jessy | 5/10 | 6354 days | 0% |
| Wilco | 7/10 | 6361 days | 1% |
| Bernd | 8/10 | 6362 days | 1% |
| Ruben | 8/10 | 6362 days | 1% |
| Paul | 10/10 | 6366 days | 1% |
| Loren | 10/10 | 6393 days | 1% |
| DavidO | 8/10 | 6396 days | 1% |
| Peter | 9/10 | 6402 days | 1% |
| David | 10/10 | 6402 days | 1% |
| Kylie | 8/10 | 6406 days | 1% |
| Ursula | 9/10 | 6419 days | 1% |
| Carrie | 8/10 | 6436 days | 1% |
| David | 10/10 | 6466 days | 1% |
| Howard | 9/10 | 6485 days | 1% |
| Chris | 8/10 | 6666 days | 1% |
| Anthony | 8/10 | 6669 days | 1% |
| Sandra Verbaarschot | 10/10 | 6669 days | 1% |
| Omer Harron | 10/10 | 6669 days | 1% |
| angela | 9/10 | 6672 days | 1% |
| Kerstin Brantryd | 5/10 | 6676 days | 0% |
| Sanne | 10/10 | 6682 days | 1% |
| Tessa McCormick | 9/10 | 6686 days | 1% |
| Sally and David Wallis | 10/10 | 6689 days | 1% |
| Martens | 8/10 | 6690 days | 1% |
| Dan Adamson | 9/10 | 6708 days | 1% |
| Ben | 7/10 | 6774 days | 1% |
| Kirsty Ranger | 9/10 | 6849 days | 1% |
| Andy Chapman | 8/10 | 6891 days | 1% |
| ranker_34 | 5/10 | 6891 days | 0% |
| Jo | 9/10 | 6891 days | 1% |
| Matous | 10/10 | 7010 days | 1% |
| Stefan&Gerte | 7/10 | 7013 days | 1% |
| Jenny | 9/10 | 7013 days | 1% |
| Paul Yacoumis | 8/10 | 7017 days | 1% |
| Deloraine | 7/10 | 7026 days | 1% |
| Denise Nick | 9/10 | 7028 days | 1% |
| Daniel | 10/10 | 7033 days | 1% |
| Martin Smith | 8/10 | 7036 days | 1% |
| Susan | 8/10 | 7039 days | 1% |
| sebastian | 10/10 | 7040 days | 1% |
| ranker_110 | 9/10 | 7047 days | 1% |
| Stefan | 8/10 | 7049 days | 1% |
| Svenja | 7/10 | 7054 days | 1% |
| Hirsh | 10/10 | 7059 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
-2.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 118 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 | -2.12% |
| 198 | -2.13% |
| 199 | -2.14% |
| 200 | -2.15% |
| 201 | -2.16% |
| 202 | -2.17% |
| 203 | -2.18% |
| … | … |
Balancing Adjustment
3.86% 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.