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
79.99%
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 | 413 days | 100% |
| Chris Creed | 10/10 | 625 days | 87% |
| Hirash | 1/10 | 687 days | 33% |
| Kat | 1/10 | 778 days | 30% |
| Remy and Rebecca Mans | 6/10 | 3525 days | 2% |
| Jocelyn Booy | 9/10 | 3550 days | 2% |
| David Horley | 7/10 | 3564 days | 2% |
| Vallee Manon | 9/10 | 3597 days | 2% |
| Nanda Dyke | 9/10 | 3623 days | 2% |
| victor diego | 7/10 | 3641 days | 1% |
| Samuel Michalak | 10/10 | 3646 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3870 days | 1% |
| Benedikt Hang | 8/10 | 3877 days | 1% |
| Jorge Gonzoleis | 8/10 | 3880 days | 1% |
| Lauren Goebel | 10/10 | 3884 days | 1% |
| Rahel Baufeld | 8/10 | 3892 days | 1% |
| Peter Hodgson | 10/10 | 3918 days | 1% |
| doug fiddes | 10/10 | 3943 days | 1% |
| Dan Wilson | 7/10 | 3960 days | 1% |
| Corrie Medinea | 8/10 | 3968 days | 1% |
| Gracen Verheryden | 10/10 | 3971 days | 1% |
| Jennifer Hoyles | 10/10 | 3975 days | 1% |
| Lenka Korinkova | 7/10 | 4237 days | 0% |
| Rebecca Wharton | 9/10 | 4265 days | 0% |
| Andy Jobst | 8/10 | 4340 days | 0% |
| Rawiri johnston | 10/10 | 4523 days | 1% |
| Marek Heiurich | 7/10 | 4593 days | 1% |
| Matt Weston | 10/10 | 4598 days | 1% |
| Henrik Bours | 8/10 | 4599 days | 1% |
| Svenja Trubenbach | 9/10 | 4599 days | 1% |
| Sheila Galpin | 9/10 | 4613 days | 1% |
| Guillaume | 9/10 | 4624 days | 1% |
| Andreas Jung | 9/10 | 4639 days | 1% |
| Inga Memmen | 10/10 | 4641 days | 1% |
| Alacchi Moustier | 10/10 | 4656 days | 1% |
| Guy David | 9/10 | 4664 days | 1% |
| Michael Rohn | 8/10 | 4671 days | 1% |
| Rainer | 9/10 | 4955 days | 1% |
| Clarissa Hanck | 9/10 | 4955 days | 1% |
| Michael Heuer | 9/10 | 4957 days | 1% |
| Oram Salem | 6/10 | 4957 days | 1% |
| Lea Roser | 9/10 | 4966 days | 1% |
| Jitka Krejcova | 10/10 | 4966 days | 1% |
| Michal Sturma | 9/10 | 4966 days | 1% |
| Stientje van den Heuvel | 8/10 | 4966 days | 1% |
| Tom Somers | 9/10 | 4966 days | 1% |
| Brandon Wells | 8/10 | 4967 days | 1% |
| Tim Vennewold | 9/10 | 4967 days | 1% |
| Katharina | 8/10 | 4967 days | 1% |
| Lorna and Seb | 9/10 | 4983 days | 1% |
| Kristin Denny | 8/10 | 4990 days | 1% |
| Wendy Ward | 10/10 | 4996 days | 1% |
| Michal Maly | 9/10 | 5006 days | 1% |
| Michael Nolan | 10/10 | 5008 days | 1% |
| Hanneke P | 7/10 | 5039 days | 1% |
| Katharina Pape | 8/10 | 5068 days | 1% |
| Camille | 7/10 | 5075 days | 1% |
| Petr Stepanek | 10/10 | 5337 days | 1% |
| Larry Curtiss | 10/10 | 5342 days | 1% |
| nztintin | 10/10 | 5345 days | 1% |
| Marion Hassink | 7/10 | 5351 days | 1% |
| Stam | 6/10 | 5356 days | 1% |
| Ed & Katie Riches | 8/10 | 5357 days | 1% |
| Seth & Carla | 10/10 | 5359 days | 1% |
| Peter Putz | 10/10 | 5359 days | 1% |
| Tadej Ferjan | 10/10 | 5359 days | 1% |
| Nico Welagen | 10/10 | 5360 days | 1% |
| Alan Findlay | 9/10 | 5360 days | 1% |
| Andreas Kristiansen | 10/10 | 5368 days | 1% |
| Arnoldus Bergmans | 10/10 | 5440 days | 1% |
| Kai | 10/10 | 5442 days | 1% |
| Christoph | 9/10 | 5445 days | 1% |
| Jory Singer | 8/10 | 5451 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5456 days | 1% |
| Kimberly St Louis | 10/10 | 5650 days | 1% |
| Lisa Milton | 10/10 | 5673 days | 1% |
| Rob O'Neill | 10/10 | 5682 days | 1% |
| Laura Thrower | 10/10 | 5685 days | 1% |
| Ofir Avimeir | 8/10 | 5689 days | 1% |
| Zachary Steinberg | 9/10 | 5690 days | 1% |
| Brian Jones | 9/10 | 5690 days | 1% |
| Sarah and Uli Glas | 9/10 | 5691 days | 1% |
| Boi Sagarra | 8/10 | 5694 days | 1% |
| John Tinus | 8/10 | 5695 days | 1% |
| Stefanie | 8/10 | 5696 days | 1% |
| Alex | 8/10 | 5698 days | 1% |
| Fredrik Thornell | 8/10 | 5701 days | 1% |
| Siggi Wick | 9/10 | 5702 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5703 days | 1% |
| Estel la Prado | 9/10 | 5705 days | 1% |
| Jeff and Carey Brown | 10/10 | 5710 days | 1% |
| LandJ | 7/10 | 5711 days | 1% |
| Katie Mitchell | 9/10 | 5711 days | 1% |
| Galamez | 9/10 | 5718 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5721 days | 1% |
| Thomas Reidinger | 6/10 | 5725 days | 1% |
| G Elliason | 9/10 | 5725 days | 1% |
| Van den Borne | 9/10 | 5725 days | 1% |
| Laura Hayes | 10/10 | 5726 days | 1% |
| Brian Lind | 7/10 | 5726 days | 1% |
| Chloe Finster | 10/10 | 5726 days | 1% |
| Jol Balder | 8/10 | 5727 days | 1% |
| Robert Haidt | 10/10 | 5732 days | 1% |
| VisualDelight | 10/10 | 5954 days | 1% |
| lindam | 10/10 | 6045 days | 1% |
| Martina Pankova | 9/10 | 6051 days | 1% |
| Neal | 10/10 | 6089 days | 1% |
| Bouwma | 8/10 | 6097 days | 1% |
| Mattias Thorm | 9/10 | 6098 days | 1% |
| Erik Hummelmose | 8/10 | 6100 days | 1% |
| Ian E | 10/10 | 6100 days | 1% |
| Kane Chain | 9/10 | 6121 days | 1% |
| johnma | 10/10 | 6155 days | 1% |
| ingeh | 8/10 | 6159 days | 1% |
| Jerry | 8/10 | 6166 days | 1% |
| Decuq | 10/10 | 6177 days | 1% |
| Carl and Angela Rapihana | 8/10 | 6189 days | 1% |
| Graham Butt | 10/10 | 6189 days | 1% |
| tessac | 9/10 | 6291 days | 1% |
| andriesk | 9/10 | 6292 days | 1% |
| nickm | 10/10 | 6365 days | 1% |
| Sofie | 10/10 | 6380 days | 1% |
| streneer | 10/10 | 6397 days | 1% |
| ElleGermany | 9/10 | 6398 days | 1% |
| JonK | 9/10 | 6398 days | 1% |
| NicolaW | 10/10 | 6402 days | 1% |
| DirkGermany | 10/10 | 6405 days | 1% |
| Bridget | 10/10 | 6414 days | 1% |
| Roy | 9/10 | 6414 days | 1% |
| HenizV | 9/10 | 6419 days | 1% |
| CraigB | 10/10 | 6422 days | 1% |
| familytravellers | 7/10 | 6422 days | 1% |
| Rissmann | 10/10 | 6426 days | 1% |
| Sara Hansson | 10/10 | 6427 days | 1% |
| Frank | 9/10 | 6427 days | 1% |
| KurtL | 8/10 | 6428 days | 1% |
| SteveW | 8/10 | 6429 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6430 days | 1% |
| Joel | 9/10 | 6430 days | 1% |
| Suzie Lechner | 10/10 | 6430 days | 1% |
| KathrinS | 9/10 | 6430 days | 1% |
| Debbie | 7/10 | 6433 days | 1% |
| Stolz | 9/10 | 6433 days | 1% |
| Ulli | 9/10 | 6434 days | 1% |
| Tatjane | 8/10 | 6441 days | 1% |
| Claudia | 8/10 | 6442 days | 1% |
| SimonR | 8/10 | 6444 days | 1% |
| SonjaG | 9/10 | 6444 days | 1% |
| Steve | 7/10 | 6444 days | 1% |
| AdelineC | 8/10 | 6445 days | 1% |
| RobC1 | 7/10 | 6445 days | 1% |
| RichardB1 | 6/10 | 6445 days | 1% |
| JoT | 7/10 | 6445 days | 1% |
| Olly | 10/10 | 6446 days | 1% |
| Klaus | 9/10 | 6446 days | 1% |
| JanetH | 8/10 | 6458 days | 1% |
| StefanieW | 8/10 | 6460 days | 1% |
| schenk | 8/10 | 6460 days | 1% |
| groenewold | 7/10 | 6474 days | 1% |
| Jessy | 5/10 | 6474 days | 1% |
| Wilco | 7/10 | 6482 days | 1% |
| Bernd | 8/10 | 6483 days | 1% |
| Ruben | 8/10 | 6483 days | 1% |
| Paul | 10/10 | 6486 days | 1% |
| Loren | 10/10 | 6514 days | 1% |
| DavidO | 8/10 | 6517 days | 1% |
| Peter | 9/10 | 6522 days | 1% |
| David | 10/10 | 6523 days | 1% |
| Kylie | 8/10 | 6527 days | 1% |
| Ursula | 9/10 | 6540 days | 1% |
| Carrie | 8/10 | 6557 days | 1% |
| David | 10/10 | 6587 days | 1% |
| Howard | 9/10 | 6605 days | 1% |
| Chris | 8/10 | 6787 days | 1% |
| Anthony | 8/10 | 6790 days | 1% |
| Sandra Verbaarschot | 10/10 | 6790 days | 1% |
| Omer Harron | 10/10 | 6790 days | 1% |
| angela | 9/10 | 6793 days | 1% |
| Kerstin Brantryd | 5/10 | 6797 days | 1% |
| Sanne | 10/10 | 6803 days | 1% |
| Tessa McCormick | 9/10 | 6807 days | 1% |
| Sally and David Wallis | 10/10 | 6810 days | 1% |
| Martens | 8/10 | 6811 days | 1% |
| Dan Adamson | 9/10 | 6829 days | 1% |
| Ben | 7/10 | 6895 days | 1% |
| Kirsty Ranger | 9/10 | 6970 days | 1% |
| Andy Chapman | 8/10 | 7012 days | 1% |
| ranker_34 | 5/10 | 7012 days | 1% |
| Jo | 9/10 | 7012 days | 1% |
| Matous | 10/10 | 7131 days | 1% |
| Stefan&Gerte | 7/10 | 7134 days | 1% |
| Jenny | 9/10 | 7134 days | 1% |
| Paul Yacoumis | 8/10 | 7138 days | 1% |
| Deloraine | 7/10 | 7147 days | 1% |
| Denise Nick | 9/10 | 7149 days | 1% |
| Daniel | 10/10 | 7154 days | 1% |
| Martin Smith | 8/10 | 7157 days | 1% |
| Susan | 8/10 | 7160 days | 1% |
| sebastian | 10/10 | 7161 days | 1% |
| ranker_110 | 9/10 | 7168 days | 1% |
| Stefan | 8/10 | 7170 days | 1% |
| Svenja | 7/10 | 7175 days | 1% |
| Hirsh | 10/10 | 7180 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
-3.64% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 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 | -3.59% |
| 198 | -3.60% |
| 199 | -3.62% |
| 200 | -3.64% |
| 201 | -3.66% |
| 202 | -3.68% |
| 203 | -3.70% |
| … | … |
Balancing Adjustment
4.14% 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.