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 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
79.43%
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 | 312 days | 100% |
| Chris Creed | 10/10 | 524 days | 90% |
| Hirash | 1/10 | 586 days | 35% |
| Kat | 1/10 | 677 days | 32% |
| Remy and Rebecca Mans | 6/10 | 3424 days | 1% |
| Jocelyn Booy | 9/10 | 3449 days | 2% |
| David Horley | 7/10 | 3463 days | 2% |
| Vallee Manon | 9/10 | 3496 days | 2% |
| Nanda Dyke | 9/10 | 3522 days | 1% |
| victor diego | 7/10 | 3540 days | 1% |
| Samuel Michalak | 10/10 | 3545 days | 1% |
| Laura Munguira Vadillo | 10/10 | 3769 days | 1% |
| Benedikt Hang | 8/10 | 3776 days | 1% |
| Jorge Gonzoleis | 8/10 | 3779 days | 1% |
| Lauren Goebel | 10/10 | 3783 days | 1% |
| Rahel Baufeld | 8/10 | 3791 days | 1% |
| Peter Hodgson | 10/10 | 3817 days | 1% |
| doug fiddes | 10/10 | 3843 days | 1% |
| Dan Wilson | 7/10 | 3859 days | 1% |
| Corrie Medinea | 8/10 | 3867 days | 1% |
| Gracen Verheryden | 10/10 | 3870 days | 1% |
| Jennifer Hoyles | 10/10 | 3874 days | 1% |
| Lenka Korinkova | 7/10 | 4136 days | 0% |
| Rebecca Wharton | 9/10 | 4164 days | 0% |
| Andy Jobst | 8/10 | 4239 days | 0% |
| Rawiri johnston | 10/10 | 4422 days | 1% |
| Marek Heiurich | 7/10 | 4492 days | 1% |
| Matt Weston | 10/10 | 4497 days | 1% |
| Henrik Bours | 8/10 | 4498 days | 1% |
| Svenja Trubenbach | 9/10 | 4498 days | 1% |
| Sheila Galpin | 9/10 | 4512 days | 1% |
| Guillaume | 9/10 | 4523 days | 1% |
| Andreas Jung | 9/10 | 4538 days | 1% |
| Inga Memmen | 10/10 | 4540 days | 1% |
| Alacchi Moustier | 10/10 | 4555 days | 1% |
| Guy David | 9/10 | 4563 days | 1% |
| Michael Rohn | 8/10 | 4570 days | 1% |
| Rainer | 9/10 | 4854 days | 1% |
| Clarissa Hanck | 9/10 | 4854 days | 1% |
| Michael Heuer | 9/10 | 4856 days | 1% |
| Oram Salem | 6/10 | 4856 days | 1% |
| Lea Roser | 9/10 | 4865 days | 1% |
| Jitka Krejcova | 10/10 | 4865 days | 1% |
| Michal Sturma | 9/10 | 4865 days | 1% |
| Stientje van den Heuvel | 8/10 | 4865 days | 1% |
| Tom Somers | 9/10 | 4865 days | 1% |
| Brandon Wells | 8/10 | 4866 days | 1% |
| Tim Vennewold | 9/10 | 4866 days | 1% |
| Katharina | 8/10 | 4866 days | 1% |
| Lorna and Seb | 9/10 | 4882 days | 1% |
| Kristin Denny | 8/10 | 4889 days | 1% |
| Wendy Ward | 10/10 | 4895 days | 1% |
| Michal Maly | 9/10 | 4905 days | 1% |
| Michael Nolan | 10/10 | 4907 days | 1% |
| Hanneke P | 7/10 | 4938 days | 1% |
| Katharina Pape | 8/10 | 4967 days | 1% |
| Camille | 7/10 | 4974 days | 1% |
| Petr Stepanek | 10/10 | 5236 days | 1% |
| Larry Curtiss | 10/10 | 5241 days | 1% |
| nztintin | 10/10 | 5244 days | 1% |
| Marion Hassink | 7/10 | 5250 days | 1% |
| Stam | 6/10 | 5255 days | 1% |
| Ed & Katie Riches | 8/10 | 5256 days | 1% |
| Seth & Carla | 10/10 | 5258 days | 1% |
| Peter Putz | 10/10 | 5258 days | 1% |
| Tadej Ferjan | 10/10 | 5258 days | 1% |
| Nico Welagen | 10/10 | 5259 days | 1% |
| Alan Findlay | 9/10 | 5259 days | 1% |
| Andreas Kristiansen | 10/10 | 5267 days | 1% |
| Arnoldus Bergmans | 10/10 | 5339 days | 1% |
| Kai | 10/10 | 5341 days | 1% |
| Christoph | 9/10 | 5344 days | 1% |
| Jory Singer | 8/10 | 5350 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5355 days | 1% |
| Kimberly St Louis | 10/10 | 5549 days | 1% |
| Lisa Milton | 10/10 | 5572 days | 1% |
| Rob O'Neill | 10/10 | 5581 days | 1% |
| Laura Thrower | 10/10 | 5584 days | 1% |
| Ofir Avimeir | 8/10 | 5588 days | 1% |
| Zachary Steinberg | 9/10 | 5589 days | 1% |
| Brian Jones | 9/10 | 5589 days | 1% |
| Sarah and Uli Glas | 9/10 | 5590 days | 1% |
| Boi Sagarra | 8/10 | 5593 days | 1% |
| John Tinus | 8/10 | 5594 days | 1% |
| Stefanie | 8/10 | 5595 days | 1% |
| Alex | 8/10 | 5597 days | 1% |
| Fredrik Thornell | 8/10 | 5600 days | 1% |
| Siggi Wick | 9/10 | 5601 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5602 days | 1% |
| Estel la Prado | 9/10 | 5604 days | 1% |
| Jeff and Carey Brown | 10/10 | 5609 days | 1% |
| LandJ | 7/10 | 5610 days | 1% |
| Katie Mitchell | 9/10 | 5610 days | 1% |
| Galamez | 9/10 | 5617 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5620 days | 1% |
| Thomas Reidinger | 6/10 | 5624 days | 1% |
| G Elliason | 9/10 | 5624 days | 1% |
| Van den Borne | 9/10 | 5624 days | 1% |
| Laura Hayes | 10/10 | 5625 days | 1% |
| Brian Lind | 7/10 | 5625 days | 1% |
| Chloe Finster | 10/10 | 5625 days | 1% |
| Jol Balder | 8/10 | 5626 days | 1% |
| Robert Haidt | 10/10 | 5631 days | 1% |
| VisualDelight | 10/10 | 5853 days | 1% |
| lindam | 10/10 | 5944 days | 1% |
| Martina Pankova | 9/10 | 5950 days | 1% |
| Neal | 10/10 | 5988 days | 1% |
| Bouwma | 8/10 | 5996 days | 1% |
| Mattias Thorm | 9/10 | 5997 days | 1% |
| Erik Hummelmose | 8/10 | 5999 days | 1% |
| Ian E | 10/10 | 5999 days | 1% |
| Kane Chain | 9/10 | 6020 days | 1% |
| johnma | 10/10 | 6054 days | 1% |
| ingeh | 8/10 | 6058 days | 1% |
| Jerry | 8/10 | 6065 days | 1% |
| Decuq | 10/10 | 6076 days | 1% |
| Carl and Angela Rapihana | 8/10 | 6088 days | 1% |
| Graham Butt | 10/10 | 6088 days | 1% |
| tessac | 9/10 | 6190 days | 1% |
| andriesk | 9/10 | 6191 days | 1% |
| nickm | 10/10 | 6264 days | 1% |
| Sofie | 10/10 | 6279 days | 1% |
| streneer | 10/10 | 6296 days | 1% |
| ElleGermany | 9/10 | 6297 days | 1% |
| JonK | 9/10 | 6297 days | 1% |
| NicolaW | 10/10 | 6301 days | 1% |
| DirkGermany | 10/10 | 6304 days | 1% |
| Bridget | 10/10 | 6314 days | 1% |
| Roy | 9/10 | 6314 days | 1% |
| HenizV | 9/10 | 6319 days | 1% |
| CraigB | 10/10 | 6321 days | 1% |
| familytravellers | 7/10 | 6321 days | 1% |
| Rissmann | 10/10 | 6325 days | 1% |
| Sara Hansson | 10/10 | 6326 days | 1% |
| Frank | 9/10 | 6327 days | 1% |
| KurtL | 8/10 | 6327 days | 1% |
| SteveW | 8/10 | 6328 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6329 days | 1% |
| Joel | 9/10 | 6329 days | 1% |
| Suzie Lechner | 10/10 | 6329 days | 1% |
| KathrinS | 9/10 | 6329 days | 1% |
| Debbie | 7/10 | 6333 days | 1% |
| Stolz | 9/10 | 6333 days | 1% |
| Ulli | 9/10 | 6333 days | 1% |
| Tatjane | 8/10 | 6341 days | 1% |
| Claudia | 8/10 | 6342 days | 1% |
| SimonR | 8/10 | 6343 days | 1% |
| SonjaG | 9/10 | 6343 days | 1% |
| Steve | 7/10 | 6343 days | 1% |
| AdelineC | 8/10 | 6344 days | 1% |
| RobC1 | 7/10 | 6344 days | 1% |
| RichardB1 | 6/10 | 6344 days | 1% |
| JoT | 7/10 | 6344 days | 1% |
| Olly | 10/10 | 6345 days | 1% |
| Klaus | 9/10 | 6346 days | 1% |
| JanetH | 8/10 | 6357 days | 1% |
| StefanieW | 8/10 | 6359 days | 1% |
| schenk | 8/10 | 6360 days | 1% |
| groenewold | 7/10 | 6374 days | 1% |
| Jessy | 5/10 | 6374 days | 1% |
| Wilco | 7/10 | 6381 days | 1% |
| Bernd | 8/10 | 6382 days | 1% |
| Ruben | 8/10 | 6383 days | 1% |
| Paul | 10/10 | 6386 days | 1% |
| Loren | 10/10 | 6414 days | 1% |
| DavidO | 8/10 | 6416 days | 1% |
| Peter | 9/10 | 6422 days | 1% |
| David | 10/10 | 6423 days | 1% |
| Kylie | 8/10 | 6426 days | 1% |
| Ursula | 9/10 | 6440 days | 1% |
| Carrie | 8/10 | 6456 days | 1% |
| David | 10/10 | 6487 days | 1% |
| Howard | 9/10 | 6505 days | 1% |
| Chris | 8/10 | 6686 days | 1% |
| Anthony | 8/10 | 6689 days | 1% |
| Sandra Verbaarschot | 10/10 | 6689 days | 1% |
| Omer Harron | 10/10 | 6689 days | 1% |
| angela | 9/10 | 6692 days | 1% |
| Kerstin Brantryd | 5/10 | 6696 days | 1% |
| Sanne | 10/10 | 6702 days | 1% |
| Tessa McCormick | 9/10 | 6706 days | 1% |
| Sally and David Wallis | 10/10 | 6709 days | 1% |
| Martens | 8/10 | 6710 days | 1% |
| Dan Adamson | 9/10 | 6728 days | 1% |
| Ben | 7/10 | 6794 days | 1% |
| Kirsty Ranger | 9/10 | 6869 days | 1% |
| Andy Chapman | 8/10 | 6911 days | 1% |
| ranker_34 | 5/10 | 6911 days | 1% |
| Jo | 9/10 | 6911 days | 1% |
| Matous | 10/10 | 7030 days | 1% |
| Stefan&Gerte | 7/10 | 7033 days | 1% |
| Jenny | 9/10 | 7033 days | 1% |
| Paul Yacoumis | 8/10 | 7037 days | 1% |
| Deloraine | 7/10 | 7046 days | 1% |
| Denise Nick | 9/10 | 7048 days | 1% |
| Daniel | 10/10 | 7053 days | 1% |
| Martin Smith | 8/10 | 7056 days | 1% |
| Susan | 8/10 | 7059 days | 1% |
| sebastian | 10/10 | 7060 days | 1% |
| ranker_110 | 9/10 | 7067 days | 1% |
| Stefan | 8/10 | 7069 days | 1% |
| Svenja | 7/10 | 7074 days | 1% |
| Hirsh | 10/10 | 7079 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
-2.00% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 125 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 | -1.97% |
| 198 | -1.98% |
| 199 | -1.99% |
| 200 | -2.00% |
| 201 | -2.01% |
| 202 | -2.02% |
| 203 | -2.03% |
| … | … |
Balancing Adjustment
3.78% 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.