Hi, 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
79.75%
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 | 373 days | 100% |
| Chris Creed | 10/10 | 585 days | 88% |
| Hirash | 1/10 | 647 days | 34% |
| Kat | 1/10 | 738 days | 31% |
| Remy and Rebecca Mans | 6/10 | 3485 days | 1% |
| Jocelyn Booy | 9/10 | 3510 days | 2% |
| David Horley | 7/10 | 3524 days | 2% |
| Vallee Manon | 9/10 | 3557 days | 2% |
| Nanda Dyke | 9/10 | 3583 days | 2% |
| victor diego | 7/10 | 3601 days | 1% |
| Samuel Michalak | 10/10 | 3606 days | 1% |
| Laura Munguira Vadillo | 10/10 | 3830 days | 1% |
| Benedikt Hang | 8/10 | 3837 days | 1% |
| Jorge Gonzoleis | 8/10 | 3840 days | 1% |
| Lauren Goebel | 10/10 | 3844 days | 1% |
| Rahel Baufeld | 8/10 | 3852 days | 1% |
| Peter Hodgson | 10/10 | 3878 days | 1% |
| doug fiddes | 10/10 | 3903 days | 1% |
| Dan Wilson | 7/10 | 3920 days | 1% |
| Corrie Medinea | 8/10 | 3928 days | 1% |
| Gracen Verheryden | 10/10 | 3931 days | 1% |
| Jennifer Hoyles | 10/10 | 3935 days | 1% |
| Lenka Korinkova | 7/10 | 4197 days | 0% |
| Rebecca Wharton | 9/10 | 4225 days | 0% |
| Andy Jobst | 8/10 | 4300 days | 0% |
| Rawiri johnston | 10/10 | 4483 days | 1% |
| Marek Heiurich | 7/10 | 4553 days | 1% |
| Matt Weston | 10/10 | 4558 days | 1% |
| Henrik Bours | 8/10 | 4559 days | 1% |
| Svenja Trubenbach | 9/10 | 4559 days | 1% |
| Sheila Galpin | 9/10 | 4573 days | 1% |
| Guillaume | 9/10 | 4584 days | 1% |
| Andreas Jung | 9/10 | 4599 days | 1% |
| Inga Memmen | 10/10 | 4601 days | 1% |
| Alacchi Moustier | 10/10 | 4616 days | 1% |
| Guy David | 9/10 | 4624 days | 1% |
| Michael Rohn | 8/10 | 4631 days | 1% |
| Rainer | 9/10 | 4915 days | 1% |
| Clarissa Hanck | 9/10 | 4915 days | 1% |
| Michael Heuer | 9/10 | 4917 days | 1% |
| Oram Salem | 6/10 | 4917 days | 1% |
| Lea Roser | 9/10 | 4926 days | 1% |
| Jitka Krejcova | 10/10 | 4926 days | 1% |
| Michal Sturma | 9/10 | 4926 days | 1% |
| Stientje van den Heuvel | 8/10 | 4926 days | 1% |
| Tom Somers | 9/10 | 4926 days | 1% |
| Brandon Wells | 8/10 | 4927 days | 1% |
| Tim Vennewold | 9/10 | 4927 days | 1% |
| Katharina | 8/10 | 4927 days | 1% |
| Lorna and Seb | 9/10 | 4943 days | 1% |
| Kristin Denny | 8/10 | 4950 days | 1% |
| Wendy Ward | 10/10 | 4956 days | 1% |
| Michal Maly | 9/10 | 4966 days | 1% |
| Michael Nolan | 10/10 | 4968 days | 1% |
| Hanneke P | 7/10 | 4999 days | 1% |
| Katharina Pape | 8/10 | 5028 days | 1% |
| Camille | 7/10 | 5035 days | 1% |
| Petr Stepanek | 10/10 | 5297 days | 1% |
| Larry Curtiss | 10/10 | 5302 days | 1% |
| nztintin | 10/10 | 5305 days | 1% |
| Marion Hassink | 7/10 | 5311 days | 1% |
| Stam | 6/10 | 5316 days | 1% |
| Ed & Katie Riches | 8/10 | 5317 days | 1% |
| Seth & Carla | 10/10 | 5319 days | 1% |
| Peter Putz | 10/10 | 5319 days | 1% |
| Tadej Ferjan | 10/10 | 5319 days | 1% |
| Nico Welagen | 10/10 | 5320 days | 1% |
| Alan Findlay | 9/10 | 5320 days | 1% |
| Andreas Kristiansen | 10/10 | 5328 days | 1% |
| Arnoldus Bergmans | 10/10 | 5400 days | 1% |
| Kai | 10/10 | 5402 days | 1% |
| Christoph | 9/10 | 5405 days | 1% |
| Jory Singer | 8/10 | 5411 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5416 days | 1% |
| Kimberly St Louis | 10/10 | 5610 days | 1% |
| Lisa Milton | 10/10 | 5633 days | 1% |
| Rob O'Neill | 10/10 | 5642 days | 1% |
| Laura Thrower | 10/10 | 5645 days | 1% |
| Ofir Avimeir | 8/10 | 5649 days | 1% |
| Zachary Steinberg | 9/10 | 5650 days | 1% |
| Brian Jones | 9/10 | 5650 days | 1% |
| Sarah and Uli Glas | 9/10 | 5651 days | 1% |
| Boi Sagarra | 8/10 | 5654 days | 1% |
| John Tinus | 8/10 | 5655 days | 1% |
| Stefanie | 8/10 | 5656 days | 1% |
| Alex | 8/10 | 5658 days | 1% |
| Fredrik Thornell | 8/10 | 5661 days | 1% |
| Siggi Wick | 9/10 | 5662 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5663 days | 1% |
| Estel la Prado | 9/10 | 5665 days | 1% |
| Jeff and Carey Brown | 10/10 | 5670 days | 1% |
| LandJ | 7/10 | 5671 days | 1% |
| Katie Mitchell | 9/10 | 5671 days | 1% |
| Galamez | 9/10 | 5678 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5681 days | 1% |
| Thomas Reidinger | 6/10 | 5685 days | 1% |
| G Elliason | 9/10 | 5685 days | 1% |
| Van den Borne | 9/10 | 5685 days | 1% |
| Laura Hayes | 10/10 | 5686 days | 1% |
| Brian Lind | 7/10 | 5686 days | 1% |
| Chloe Finster | 10/10 | 5686 days | 1% |
| Jol Balder | 8/10 | 5687 days | 1% |
| Robert Haidt | 10/10 | 5692 days | 1% |
| VisualDelight | 10/10 | 5914 days | 1% |
| lindam | 10/10 | 6005 days | 1% |
| Martina Pankova | 9/10 | 6011 days | 1% |
| Neal | 10/10 | 6049 days | 1% |
| Bouwma | 8/10 | 6057 days | 1% |
| Mattias Thorm | 9/10 | 6058 days | 1% |
| Erik Hummelmose | 8/10 | 6060 days | 1% |
| Ian E | 10/10 | 6060 days | 1% |
| Kane Chain | 9/10 | 6081 days | 1% |
| johnma | 10/10 | 6115 days | 1% |
| ingeh | 8/10 | 6119 days | 1% |
| Jerry | 8/10 | 6126 days | 1% |
| Decuq | 10/10 | 6137 days | 1% |
| Carl and Angela Rapihana | 8/10 | 6149 days | 1% |
| Graham Butt | 10/10 | 6149 days | 1% |
| tessac | 9/10 | 6251 days | 1% |
| andriesk | 9/10 | 6252 days | 1% |
| nickm | 10/10 | 6325 days | 1% |
| Sofie | 10/10 | 6340 days | 1% |
| streneer | 10/10 | 6357 days | 1% |
| ElleGermany | 9/10 | 6358 days | 1% |
| JonK | 9/10 | 6358 days | 1% |
| NicolaW | 10/10 | 6362 days | 1% |
| DirkGermany | 10/10 | 6365 days | 1% |
| Bridget | 10/10 | 6374 days | 1% |
| Roy | 9/10 | 6374 days | 1% |
| HenizV | 9/10 | 6379 days | 1% |
| CraigB | 10/10 | 6382 days | 1% |
| familytravellers | 7/10 | 6382 days | 1% |
| Rissmann | 10/10 | 6386 days | 1% |
| Sara Hansson | 10/10 | 6387 days | 1% |
| Frank | 9/10 | 6387 days | 1% |
| KurtL | 8/10 | 6388 days | 1% |
| SteveW | 8/10 | 6389 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6390 days | 1% |
| Joel | 9/10 | 6390 days | 1% |
| Suzie Lechner | 10/10 | 6390 days | 1% |
| KathrinS | 9/10 | 6390 days | 1% |
| Debbie | 7/10 | 6393 days | 1% |
| Stolz | 9/10 | 6393 days | 1% |
| Ulli | 9/10 | 6394 days | 1% |
| Tatjane | 8/10 | 6401 days | 1% |
| Claudia | 8/10 | 6402 days | 1% |
| SimonR | 8/10 | 6404 days | 1% |
| SonjaG | 9/10 | 6404 days | 1% |
| Steve | 7/10 | 6404 days | 1% |
| AdelineC | 8/10 | 6405 days | 1% |
| RobC1 | 7/10 | 6405 days | 1% |
| RichardB1 | 6/10 | 6405 days | 1% |
| JoT | 7/10 | 6405 days | 1% |
| Olly | 10/10 | 6406 days | 1% |
| Klaus | 9/10 | 6406 days | 1% |
| JanetH | 8/10 | 6418 days | 1% |
| StefanieW | 8/10 | 6420 days | 1% |
| schenk | 8/10 | 6420 days | 1% |
| groenewold | 7/10 | 6434 days | 1% |
| Jessy | 5/10 | 6434 days | 1% |
| Wilco | 7/10 | 6442 days | 1% |
| Bernd | 8/10 | 6443 days | 1% |
| Ruben | 8/10 | 6443 days | 1% |
| Paul | 10/10 | 6446 days | 1% |
| Loren | 10/10 | 6474 days | 1% |
| DavidO | 8/10 | 6477 days | 1% |
| Peter | 9/10 | 6482 days | 1% |
| David | 10/10 | 6483 days | 1% |
| Kylie | 8/10 | 6487 days | 1% |
| Ursula | 9/10 | 6500 days | 1% |
| Carrie | 8/10 | 6516 days | 1% |
| David | 10/10 | 6547 days | 1% |
| Howard | 9/10 | 6565 days | 1% |
| Chris | 8/10 | 6747 days | 1% |
| Anthony | 8/10 | 6750 days | 1% |
| Sandra Verbaarschot | 10/10 | 6750 days | 1% |
| Omer Harron | 10/10 | 6750 days | 1% |
| angela | 9/10 | 6753 days | 1% |
| Kerstin Brantryd | 5/10 | 6757 days | 1% |
| Sanne | 10/10 | 6763 days | 1% |
| Tessa McCormick | 9/10 | 6767 days | 1% |
| Sally and David Wallis | 10/10 | 6770 days | 1% |
| Martens | 8/10 | 6771 days | 1% |
| Dan Adamson | 9/10 | 6789 days | 1% |
| Ben | 7/10 | 6855 days | 1% |
| Kirsty Ranger | 9/10 | 6930 days | 1% |
| Andy Chapman | 8/10 | 6972 days | 1% |
| ranker_34 | 5/10 | 6972 days | 1% |
| Jo | 9/10 | 6972 days | 1% |
| Matous | 10/10 | 7091 days | 1% |
| Stefan&Gerte | 7/10 | 7094 days | 1% |
| Jenny | 9/10 | 7094 days | 1% |
| Paul Yacoumis | 8/10 | 7098 days | 1% |
| Deloraine | 7/10 | 7107 days | 1% |
| Denise Nick | 9/10 | 7109 days | 1% |
| Daniel | 10/10 | 7114 days | 1% |
| Martin Smith | 8/10 | 7117 days | 1% |
| Susan | 8/10 | 7120 days | 1% |
| sebastian | 10/10 | 7121 days | 1% |
| ranker_110 | 9/10 | 7128 days | 1% |
| Stefan | 8/10 | 7130 days | 1% |
| Svenja | 7/10 | 7135 days | 1% |
| Hirsh | 10/10 | 7140 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
-2.78% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 85 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 | -2.74% |
| 198 | -2.76% |
| 199 | -2.77% |
| 200 | -2.78% |
| 201 | -2.80% |
| 202 | -2.81% |
| 203 | -2.83% |
| … | … |
Balancing Adjustment
3.93% 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.