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
79.53%
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 | 333 days | 100% |
| Chris Creed | 10/10 | 545 days | 90% |
| Hirash | 1/10 | 607 days | 34% |
| Kat | 1/10 | 698 days | 31% |
| Remy and Rebecca Mans | 6/10 | 3445 days | 1% |
| Jocelyn Booy | 9/10 | 3470 days | 2% |
| David Horley | 7/10 | 3484 days | 2% |
| Vallee Manon | 9/10 | 3517 days | 2% |
| Nanda Dyke | 9/10 | 3543 days | 2% |
| victor diego | 7/10 | 3561 days | 1% |
| Samuel Michalak | 10/10 | 3566 days | 1% |
| Laura Munguira Vadillo | 10/10 | 3790 days | 1% |
| Benedikt Hang | 8/10 | 3797 days | 1% |
| Jorge Gonzoleis | 8/10 | 3800 days | 1% |
| Lauren Goebel | 10/10 | 3804 days | 1% |
| Rahel Baufeld | 8/10 | 3812 days | 1% |
| Peter Hodgson | 10/10 | 3838 days | 1% |
| doug fiddes | 10/10 | 3863 days | 1% |
| Dan Wilson | 7/10 | 3880 days | 1% |
| Corrie Medinea | 8/10 | 3888 days | 1% |
| Gracen Verheryden | 10/10 | 3891 days | 1% |
| Jennifer Hoyles | 10/10 | 3895 days | 1% |
| Lenka Korinkova | 7/10 | 4157 days | 0% |
| Rebecca Wharton | 9/10 | 4185 days | 0% |
| Andy Jobst | 8/10 | 4260 days | 0% |
| Rawiri johnston | 10/10 | 4443 days | 1% |
| Marek Heiurich | 7/10 | 4513 days | 1% |
| Matt Weston | 10/10 | 4518 days | 1% |
| Henrik Bours | 8/10 | 4519 days | 1% |
| Svenja Trubenbach | 9/10 | 4519 days | 1% |
| Sheila Galpin | 9/10 | 4533 days | 1% |
| Guillaume | 9/10 | 4544 days | 1% |
| Andreas Jung | 9/10 | 4559 days | 1% |
| Inga Memmen | 10/10 | 4561 days | 1% |
| Alacchi Moustier | 10/10 | 4576 days | 1% |
| Guy David | 9/10 | 4584 days | 1% |
| Michael Rohn | 8/10 | 4591 days | 1% |
| Rainer | 9/10 | 4875 days | 1% |
| Clarissa Hanck | 9/10 | 4875 days | 1% |
| Michael Heuer | 9/10 | 4877 days | 1% |
| Oram Salem | 6/10 | 4877 days | 1% |
| Lea Roser | 9/10 | 4886 days | 1% |
| Jitka Krejcova | 10/10 | 4886 days | 1% |
| Michal Sturma | 9/10 | 4886 days | 1% |
| Stientje van den Heuvel | 8/10 | 4886 days | 1% |
| Tom Somers | 9/10 | 4886 days | 1% |
| Brandon Wells | 8/10 | 4887 days | 1% |
| Tim Vennewold | 9/10 | 4887 days | 1% |
| Katharina | 8/10 | 4887 days | 1% |
| Lorna and Seb | 9/10 | 4903 days | 1% |
| Kristin Denny | 8/10 | 4910 days | 1% |
| Wendy Ward | 10/10 | 4916 days | 1% |
| Michal Maly | 9/10 | 4926 days | 1% |
| Michael Nolan | 10/10 | 4928 days | 1% |
| Hanneke P | 7/10 | 4959 days | 1% |
| Katharina Pape | 8/10 | 4988 days | 1% |
| Camille | 7/10 | 4995 days | 1% |
| Petr Stepanek | 10/10 | 5257 days | 1% |
| Larry Curtiss | 10/10 | 5262 days | 1% |
| nztintin | 10/10 | 5265 days | 1% |
| Marion Hassink | 7/10 | 5271 days | 1% |
| Stam | 6/10 | 5276 days | 1% |
| Ed & Katie Riches | 8/10 | 5277 days | 1% |
| Seth & Carla | 10/10 | 5279 days | 1% |
| Peter Putz | 10/10 | 5279 days | 1% |
| Tadej Ferjan | 10/10 | 5279 days | 1% |
| Nico Welagen | 10/10 | 5280 days | 1% |
| Alan Findlay | 9/10 | 5280 days | 1% |
| Andreas Kristiansen | 10/10 | 5288 days | 1% |
| Arnoldus Bergmans | 10/10 | 5360 days | 1% |
| Kai | 10/10 | 5362 days | 1% |
| Christoph | 9/10 | 5365 days | 1% |
| Jory Singer | 8/10 | 5371 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5376 days | 1% |
| Kimberly St Louis | 10/10 | 5570 days | 1% |
| Lisa Milton | 10/10 | 5593 days | 1% |
| Rob O'Neill | 10/10 | 5602 days | 1% |
| Laura Thrower | 10/10 | 5605 days | 1% |
| Ofir Avimeir | 8/10 | 5609 days | 1% |
| Zachary Steinberg | 9/10 | 5610 days | 1% |
| Brian Jones | 9/10 | 5610 days | 1% |
| Sarah and Uli Glas | 9/10 | 5611 days | 1% |
| Boi Sagarra | 8/10 | 5614 days | 1% |
| John Tinus | 8/10 | 5615 days | 1% |
| Stefanie | 8/10 | 5616 days | 1% |
| Alex | 8/10 | 5618 days | 1% |
| Fredrik Thornell | 8/10 | 5621 days | 1% |
| Siggi Wick | 9/10 | 5622 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5623 days | 1% |
| Estel la Prado | 9/10 | 5625 days | 1% |
| Jeff and Carey Brown | 10/10 | 5630 days | 1% |
| LandJ | 7/10 | 5631 days | 1% |
| Katie Mitchell | 9/10 | 5631 days | 1% |
| Galamez | 9/10 | 5638 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5641 days | 1% |
| Thomas Reidinger | 6/10 | 5645 days | 1% |
| G Elliason | 9/10 | 5645 days | 1% |
| Van den Borne | 9/10 | 5645 days | 1% |
| Laura Hayes | 10/10 | 5646 days | 1% |
| Brian Lind | 7/10 | 5646 days | 1% |
| Chloe Finster | 10/10 | 5646 days | 1% |
| Jol Balder | 8/10 | 5647 days | 1% |
| Robert Haidt | 10/10 | 5652 days | 1% |
| VisualDelight | 10/10 | 5874 days | 1% |
| lindam | 10/10 | 5965 days | 1% |
| Martina Pankova | 9/10 | 5971 days | 1% |
| Neal | 10/10 | 6009 days | 1% |
| Bouwma | 8/10 | 6017 days | 1% |
| Mattias Thorm | 9/10 | 6018 days | 1% |
| Erik Hummelmose | 8/10 | 6020 days | 1% |
| Ian E | 10/10 | 6020 days | 1% |
| Kane Chain | 9/10 | 6041 days | 1% |
| johnma | 10/10 | 6075 days | 1% |
| ingeh | 8/10 | 6079 days | 1% |
| Jerry | 8/10 | 6086 days | 1% |
| Decuq | 10/10 | 6097 days | 1% |
| Carl and Angela Rapihana | 8/10 | 6109 days | 1% |
| Graham Butt | 10/10 | 6109 days | 1% |
| tessac | 9/10 | 6211 days | 1% |
| andriesk | 9/10 | 6212 days | 1% |
| nickm | 10/10 | 6285 days | 1% |
| Sofie | 10/10 | 6300 days | 1% |
| streneer | 10/10 | 6317 days | 1% |
| ElleGermany | 9/10 | 6318 days | 1% |
| JonK | 9/10 | 6318 days | 1% |
| NicolaW | 10/10 | 6322 days | 1% |
| DirkGermany | 10/10 | 6325 days | 1% |
| Bridget | 10/10 | 6334 days | 1% |
| Roy | 9/10 | 6334 days | 1% |
| HenizV | 9/10 | 6339 days | 1% |
| CraigB | 10/10 | 6342 days | 1% |
| familytravellers | 7/10 | 6342 days | 1% |
| Rissmann | 10/10 | 6346 days | 1% |
| Sara Hansson | 10/10 | 6347 days | 1% |
| Frank | 9/10 | 6347 days | 1% |
| KurtL | 8/10 | 6348 days | 1% |
| SteveW | 8/10 | 6349 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6350 days | 1% |
| Joel | 9/10 | 6350 days | 1% |
| Suzie Lechner | 10/10 | 6350 days | 1% |
| KathrinS | 9/10 | 6350 days | 1% |
| Debbie | 7/10 | 6353 days | 1% |
| Stolz | 9/10 | 6353 days | 1% |
| Ulli | 9/10 | 6354 days | 1% |
| Tatjane | 8/10 | 6361 days | 1% |
| Claudia | 8/10 | 6362 days | 1% |
| SimonR | 8/10 | 6364 days | 1% |
| SonjaG | 9/10 | 6364 days | 1% |
| Steve | 7/10 | 6364 days | 1% |
| AdelineC | 8/10 | 6365 days | 1% |
| RobC1 | 7/10 | 6365 days | 1% |
| RichardB1 | 6/10 | 6365 days | 1% |
| JoT | 7/10 | 6365 days | 1% |
| Olly | 10/10 | 6366 days | 1% |
| Klaus | 9/10 | 6366 days | 1% |
| JanetH | 8/10 | 6378 days | 1% |
| StefanieW | 8/10 | 6380 days | 1% |
| schenk | 8/10 | 6380 days | 1% |
| groenewold | 7/10 | 6394 days | 1% |
| Jessy | 5/10 | 6394 days | 1% |
| Wilco | 7/10 | 6402 days | 1% |
| Bernd | 8/10 | 6403 days | 1% |
| Ruben | 8/10 | 6403 days | 1% |
| Paul | 10/10 | 6406 days | 1% |
| Loren | 10/10 | 6434 days | 1% |
| DavidO | 8/10 | 6437 days | 1% |
| Peter | 9/10 | 6442 days | 1% |
| David | 10/10 | 6443 days | 1% |
| Kylie | 8/10 | 6447 days | 1% |
| Ursula | 9/10 | 6460 days | 1% |
| Carrie | 8/10 | 6476 days | 1% |
| David | 10/10 | 6507 days | 1% |
| Howard | 9/10 | 6525 days | 1% |
| Chris | 8/10 | 6707 days | 1% |
| Anthony | 8/10 | 6710 days | 1% |
| Sandra Verbaarschot | 10/10 | 6710 days | 1% |
| Omer Harron | 10/10 | 6710 days | 1% |
| angela | 9/10 | 6713 days | 1% |
| Kerstin Brantryd | 5/10 | 6717 days | 1% |
| Sanne | 10/10 | 6723 days | 1% |
| Tessa McCormick | 9/10 | 6727 days | 1% |
| Sally and David Wallis | 10/10 | 6730 days | 1% |
| Martens | 8/10 | 6731 days | 1% |
| Dan Adamson | 9/10 | 6749 days | 1% |
| Ben | 7/10 | 6815 days | 1% |
| Kirsty Ranger | 9/10 | 6890 days | 1% |
| Andy Chapman | 8/10 | 6932 days | 1% |
| ranker_34 | 5/10 | 6932 days | 1% |
| Jo | 9/10 | 6932 days | 1% |
| Matous | 10/10 | 7051 days | 1% |
| Stefan&Gerte | 7/10 | 7054 days | 1% |
| Jenny | 9/10 | 7054 days | 1% |
| Paul Yacoumis | 8/10 | 7058 days | 1% |
| Deloraine | 7/10 | 7067 days | 1% |
| Denise Nick | 9/10 | 7069 days | 1% |
| Daniel | 10/10 | 7074 days | 1% |
| Martin Smith | 8/10 | 7077 days | 1% |
| Susan | 8/10 | 7080 days | 1% |
| sebastian | 10/10 | 7081 days | 1% |
| ranker_110 | 9/10 | 7088 days | 1% |
| Stefan | 8/10 | 7090 days | 1% |
| Svenja | 7/10 | 7095 days | 1% |
| Hirsh | 10/10 | 7100 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
-2.09% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 123 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 | -2.06% |
| 198 | -2.07% |
| 199 | -2.08% |
| 200 | -2.09% |
| 201 | -2.10% |
| 202 | -2.12% |
| 203 | -2.13% |
| … | … |
Balancing Adjustment
3.77% 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.