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
200 Valid Reviews
The Southern Discoveries experience has a total of 200 valid reviews. There are no invalid reviews 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 200 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 63 |
|
32% |
| 9/10 | 59 |
|
30% |
| 8/10 | 48 |
|
24% |
| 7/10 | 21 |
|
11% |
| 6/10 | 5 |
|
3% |
| 5/10 | 3 |
|
2% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 1 |
|
1% |
86.90% Average
The raw data average (mean) for all the Southern Discoveries valid reviews is 86.90% and is based on 200 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 200 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
74.70%
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 |
|---|---|---|---|
| Kat | 1/10 | 109 days | 100% |
| Remy and Rebecca Mans | 6/10 | 2856 days | 6% |
| Jocelyn Booy | 9/10 | 2881 days | 7% |
| David Horley | 7/10 | 2895 days | 7% |
| Vallee Manon | 9/10 | 2928 days | 7% |
| Nanda Dyke | 9/10 | 2954 days | 7% |
| victor diego | 7/10 | 2972 days | 6% |
| Samuel Michalak | 10/10 | 2977 days | 7% |
| Laura Munguira Vadillo | 10/10 | 3201 days | 6% |
| Benedikt Hang | 8/10 | 3208 days | 6% |
| Jorge Gonzoleis | 8/10 | 3211 days | 6% |
| Lauren Goebel | 10/10 | 3215 days | 6% |
| Rahel Baufeld | 8/10 | 3223 days | 5% |
| Peter Hodgson | 10/10 | 3249 days | 5% |
| doug fiddes | 10/10 | 3274 days | 5% |
| Dan Wilson | 7/10 | 3291 days | 5% |
| Corrie Medinea | 8/10 | 3299 days | 5% |
| Gracen Verheryden | 10/10 | 3302 days | 5% |
| Jennifer Hoyles | 10/10 | 3306 days | 5% |
| Lenka Korinkova | 7/10 | 3568 days | 4% |
| Rebecca Wharton | 9/10 | 3596 days | 4% |
| Andy Jobst | 8/10 | 3671 days | 3% |
| Rawiri johnston | 10/10 | 3854 days | 3% |
| Marek Heiurich | 7/10 | 3924 days | 2% |
| Matt Weston | 10/10 | 3929 days | 2% |
| Henrik Bours | 8/10 | 3930 days | 2% |
| Svenja Trubenbach | 9/10 | 3930 days | 2% |
| Sheila Galpin | 9/10 | 3944 days | 2% |
| Guillaume | 9/10 | 3955 days | 2% |
| Andreas Jung | 9/10 | 3970 days | 2% |
| Inga Memmen | 10/10 | 3972 days | 2% |
| Alacchi Moustier | 10/10 | 3987 days | 2% |
| Guy David | 9/10 | 3995 days | 2% |
| Michael Rohn | 8/10 | 4002 days | 2% |
| Rainer | 9/10 | 4286 days | 0% |
| Clarissa Hanck | 9/10 | 4286 days | 0% |
| Michael Heuer | 9/10 | 4288 days | 0% |
| Oram Salem | 6/10 | 4288 days | 0% |
| Lea Roser | 9/10 | 4297 days | 0% |
| Jitka Krejcova | 10/10 | 4297 days | 0% |
| Michal Sturma | 9/10 | 4297 days | 0% |
| Stientje van den Heuvel | 8/10 | 4297 days | 0% |
| Tom Somers | 9/10 | 4297 days | 0% |
| Brandon Wells | 8/10 | 4298 days | 0% |
| Tim Vennewold | 9/10 | 4298 days | 0% |
| Katharina | 8/10 | 4298 days | 0% |
| Lorna and Seb | 9/10 | 4314 days | 0% |
| Kristin Denny | 8/10 | 4321 days | 0% |
| Wendy Ward | 10/10 | 4327 days | 0% |
| Michal Maly | 9/10 | 4337 days | 0% |
| Michael Nolan | 10/10 | 4339 days | 0% |
| Hanneke P | 7/10 | 4370 days | 0% |
| Katharina Pape | 8/10 | 4399 days | 2% |
| Camille | 7/10 | 4406 days | 2% |
| Petr Stepanek | 10/10 | 4668 days | 2% |
| Larry Curtiss | 10/10 | 4673 days | 2% |
| nztintin | 10/10 | 4676 days | 2% |
| Marion Hassink | 7/10 | 4682 days | 2% |
| Stam | 6/10 | 4687 days | 2% |
| Ed & Katie Riches | 8/10 | 4688 days | 2% |
| Seth & Carla | 10/10 | 4690 days | 2% |
| Peter Putz | 10/10 | 4690 days | 2% |
| Tadej Ferjan | 10/10 | 4690 days | 2% |
| Nico Welagen | 10/10 | 4691 days | 2% |
| Alan Findlay | 9/10 | 4691 days | 2% |
| Andreas Kristiansen | 10/10 | 4699 days | 2% |
| Arnoldus Bergmans | 10/10 | 4771 days | 2% |
| Kai | 10/10 | 4773 days | 2% |
| Christoph | 9/10 | 4776 days | 2% |
| Jory Singer | 8/10 | 4782 days | 2% |
| Scott & Madeleine Bancroft | 9/10 | 4787 days | 2% |
| Kimberly St Louis | 10/10 | 4981 days | 2% |
| Lisa Milton | 10/10 | 5004 days | 2% |
| Rob O'Neill | 10/10 | 5013 days | 2% |
| Laura Thrower | 10/10 | 5016 days | 2% |
| Ofir Avimeir | 8/10 | 5020 days | 2% |
| Zachary Steinberg | 9/10 | 5021 days | 2% |
| Brian Jones | 9/10 | 5021 days | 2% |
| Sarah and Uli Glas | 9/10 | 5022 days | 2% |
| Boi Sagarra | 8/10 | 5025 days | 2% |
| John Tinus | 8/10 | 5026 days | 2% |
| Stefanie | 8/10 | 5027 days | 2% |
| Alex | 8/10 | 5029 days | 2% |
| Fredrik Thornell | 8/10 | 5032 days | 2% |
| Siggi Wick | 9/10 | 5033 days | 2% |
| Bruce & Elaine Chote | 10/10 | 5034 days | 2% |
| Estel la Prado | 9/10 | 5036 days | 2% |
| Jeff and Carey Brown | 10/10 | 5041 days | 2% |
| LandJ | 7/10 | 5042 days | 2% |
| Katie Mitchell | 9/10 | 5042 days | 2% |
| Galamez | 9/10 | 5049 days | 2% |
| Mr & Mrs Mackie | 9/10 | 5052 days | 2% |
| Thomas Reidinger | 6/10 | 5056 days | 2% |
| G Elliason | 9/10 | 5056 days | 2% |
| Van den Borne | 9/10 | 5056 days | 2% |
| Laura Hayes | 10/10 | 5057 days | 2% |
| Brian Lind | 7/10 | 5057 days | 2% |
| Chloe Finster | 10/10 | 5057 days | 2% |
| Jol Balder | 8/10 | 5058 days | 2% |
| Robert Haidt | 10/10 | 5063 days | 2% |
| VisualDelight | 10/10 | 5285 days | 2% |
| lindam | 10/10 | 5376 days | 2% |
| Martina Pankova | 9/10 | 5382 days | 2% |
| Neal | 10/10 | 5420 days | 2% |
| Bouwma | 8/10 | 5428 days | 2% |
| Mattias Thorm | 9/10 | 5429 days | 2% |
| Erik Hummelmose | 8/10 | 5431 days | 2% |
| Ian E | 10/10 | 5431 days | 2% |
| Kane Chain | 9/10 | 5452 days | 2% |
| johnma | 10/10 | 5486 days | 2% |
| ingeh | 8/10 | 5490 days | 2% |
| Jerry | 8/10 | 5497 days | 2% |
| Decuq | 10/10 | 5508 days | 2% |
| Carl and Angela Rapihana | 8/10 | 5520 days | 2% |
| Graham Butt | 10/10 | 5520 days | 2% |
| tessac | 9/10 | 5622 days | 2% |
| andriesk | 9/10 | 5623 days | 2% |
| nickm | 10/10 | 5696 days | 2% |
| Sofie | 10/10 | 5711 days | 2% |
| streneer | 10/10 | 5728 days | 2% |
| ElleGermany | 9/10 | 5729 days | 2% |
| JonK | 9/10 | 5729 days | 2% |
| NicolaW | 10/10 | 5733 days | 2% |
| DirkGermany | 10/10 | 5736 days | 2% |
| Bridget | 10/10 | 5745 days | 2% |
| Roy | 9/10 | 5745 days | 2% |
| HenizV | 9/10 | 5750 days | 2% |
| CraigB | 10/10 | 5753 days | 2% |
| familytravellers | 7/10 | 5753 days | 2% |
| Rissmann | 10/10 | 5757 days | 2% |
| Sara Hansson | 10/10 | 5758 days | 2% |
| Frank | 9/10 | 5758 days | 2% |
| KurtL | 8/10 | 5759 days | 2% |
| SteveW | 8/10 | 5760 days | 2% |
| Peter Bowen-Simpkins | 9/10 | 5761 days | 2% |
| Joel | 9/10 | 5761 days | 2% |
| Suzie Lechner | 10/10 | 5761 days | 2% |
| KathrinS | 9/10 | 5761 days | 2% |
| Debbie | 7/10 | 5764 days | 2% |
| Stolz | 9/10 | 5764 days | 2% |
| Ulli | 9/10 | 5765 days | 2% |
| Tatjane | 8/10 | 5772 days | 2% |
| Claudia | 8/10 | 5773 days | 2% |
| SimonR | 8/10 | 5775 days | 2% |
| SonjaG | 9/10 | 5775 days | 2% |
| Steve | 7/10 | 5775 days | 2% |
| AdelineC | 8/10 | 5776 days | 2% |
| RobC1 | 7/10 | 5776 days | 2% |
| RichardB1 | 6/10 | 5776 days | 2% |
| JoT | 7/10 | 5776 days | 2% |
| Olly | 10/10 | 5777 days | 2% |
| Klaus | 9/10 | 5777 days | 2% |
| JanetH | 8/10 | 5789 days | 2% |
| StefanieW | 8/10 | 5791 days | 2% |
| schenk | 8/10 | 5791 days | 2% |
| groenewold | 7/10 | 5805 days | 2% |
| Jessy | 5/10 | 5805 days | 2% |
| Wilco | 7/10 | 5813 days | 2% |
| Bernd | 8/10 | 5814 days | 2% |
| Ruben | 8/10 | 5814 days | 2% |
| Paul | 10/10 | 5817 days | 2% |
| Loren | 10/10 | 5845 days | 2% |
| DavidO | 8/10 | 5848 days | 2% |
| Peter | 9/10 | 5853 days | 2% |
| David | 10/10 | 5854 days | 2% |
| Kylie | 8/10 | 5858 days | 2% |
| Ursula | 9/10 | 5871 days | 2% |
| Carrie | 8/10 | 5888 days | 2% |
| David | 10/10 | 5918 days | 2% |
| Howard | 9/10 | 5936 days | 2% |
| Chris | 8/10 | 6118 days | 2% |
| Anthony | 8/10 | 6121 days | 2% |
| Sandra Verbaarschot | 10/10 | 6121 days | 2% |
| Omer Harron | 10/10 | 6121 days | 2% |
| angela | 9/10 | 6124 days | 2% |
| Kerstin Brantryd | 5/10 | 6128 days | 2% |
| Sanne | 10/10 | 6134 days | 2% |
| Tessa McCormick | 9/10 | 6138 days | 2% |
| Sally and David Wallis | 10/10 | 6141 days | 2% |
| Martens | 8/10 | 6142 days | 2% |
| Dan Adamson | 9/10 | 6160 days | 2% |
| Ben | 7/10 | 6226 days | 2% |
| Kirsty Ranger | 9/10 | 6301 days | 2% |
| Andy Chapman | 8/10 | 6343 days | 2% |
| ranker_34 | 5/10 | 6343 days | 2% |
| Jo | 9/10 | 6343 days | 2% |
| Matous | 10/10 | 6462 days | 2% |
| Stefan&Gerte | 7/10 | 6465 days | 2% |
| Jenny | 9/10 | 6465 days | 2% |
| Paul Yacoumis | 8/10 | 6469 days | 2% |
| Deloraine | 7/10 | 6478 days | 2% |
| Denise Nick | 9/10 | 6480 days | 2% |
| Daniel | 10/10 | 6485 days | 2% |
| Martin Smith | 8/10 | 6488 days | 2% |
| Susan | 8/10 | 6491 days | 2% |
| sebastian | 10/10 | 6492 days | 2% |
| ranker_110 | 9/10 | 6499 days | 2% |
| Stefan | 8/10 | 6501 days | 2% |
| Svenja | 7/10 | 6506 days | 2% |
| Hirsh | 10/10 | 6511 days | 2% |
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 41 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 99 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 96 | -1.94% |
| 97 | -1.96% |
| 98 | -1.98% |
| 99 | -2.00% |
| 100 | -2.02% |
| 101 | -2.04% |
| 102 | -2.06% |
| … | … |
Balancing Adjustment
5.62% 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
78%
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.