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
80.11%
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 | 432 days | 100% |
| Chris Creed | 10/10 | 644 days | 86% |
| Hirash | 1/10 | 706 days | 33% |
| Kat | 1/10 | 797 days | 29% |
| Remy and Rebecca Mans | 6/10 | 3544 days | 2% |
| Jocelyn Booy | 9/10 | 3569 days | 2% |
| David Horley | 7/10 | 3583 days | 2% |
| Vallee Manon | 9/10 | 3616 days | 2% |
| Nanda Dyke | 9/10 | 3642 days | 2% |
| victor diego | 7/10 | 3660 days | 1% |
| Samuel Michalak | 10/10 | 3665 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3889 days | 1% |
| Benedikt Hang | 8/10 | 3896 days | 1% |
| Jorge Gonzoleis | 8/10 | 3899 days | 1% |
| Lauren Goebel | 10/10 | 3903 days | 1% |
| Rahel Baufeld | 8/10 | 3911 days | 1% |
| Peter Hodgson | 10/10 | 3937 days | 1% |
| doug fiddes | 10/10 | 3963 days | 1% |
| Dan Wilson | 7/10 | 3979 days | 1% |
| Corrie Medinea | 8/10 | 3987 days | 1% |
| Gracen Verheryden | 10/10 | 3990 days | 1% |
| Jennifer Hoyles | 10/10 | 3994 days | 1% |
| Lenka Korinkova | 7/10 | 4256 days | 0% |
| Rebecca Wharton | 9/10 | 4284 days | 0% |
| Andy Jobst | 8/10 | 4359 days | 0% |
| Rawiri johnston | 10/10 | 4542 days | 1% |
| Marek Heiurich | 7/10 | 4612 days | 1% |
| Matt Weston | 10/10 | 4617 days | 1% |
| Henrik Bours | 8/10 | 4618 days | 1% |
| Svenja Trubenbach | 9/10 | 4618 days | 1% |
| Sheila Galpin | 9/10 | 4632 days | 1% |
| Guillaume | 9/10 | 4643 days | 1% |
| Andreas Jung | 9/10 | 4658 days | 1% |
| Inga Memmen | 10/10 | 4660 days | 1% |
| Alacchi Moustier | 10/10 | 4675 days | 1% |
| Guy David | 9/10 | 4683 days | 1% |
| Michael Rohn | 8/10 | 4690 days | 1% |
| Rainer | 9/10 | 4974 days | 1% |
| Clarissa Hanck | 9/10 | 4974 days | 1% |
| Michael Heuer | 9/10 | 4976 days | 1% |
| Oram Salem | 6/10 | 4976 days | 1% |
| Lea Roser | 9/10 | 4985 days | 1% |
| Jitka Krejcova | 10/10 | 4985 days | 1% |
| Michal Sturma | 9/10 | 4985 days | 1% |
| Stientje van den Heuvel | 8/10 | 4985 days | 1% |
| Tom Somers | 9/10 | 4985 days | 1% |
| Brandon Wells | 8/10 | 4986 days | 1% |
| Tim Vennewold | 9/10 | 4986 days | 1% |
| Katharina | 8/10 | 4986 days | 1% |
| Lorna and Seb | 9/10 | 5002 days | 1% |
| Kristin Denny | 8/10 | 5009 days | 1% |
| Wendy Ward | 10/10 | 5015 days | 1% |
| Michal Maly | 9/10 | 5025 days | 1% |
| Michael Nolan | 10/10 | 5027 days | 1% |
| Hanneke P | 7/10 | 5058 days | 1% |
| Katharina Pape | 8/10 | 5087 days | 1% |
| Camille | 7/10 | 5094 days | 1% |
| Petr Stepanek | 10/10 | 5356 days | 1% |
| Larry Curtiss | 10/10 | 5361 days | 1% |
| nztintin | 10/10 | 5364 days | 1% |
| Marion Hassink | 7/10 | 5370 days | 1% |
| Stam | 6/10 | 5375 days | 1% |
| Ed & Katie Riches | 8/10 | 5376 days | 1% |
| Seth & Carla | 10/10 | 5378 days | 1% |
| Peter Putz | 10/10 | 5378 days | 1% |
| Tadej Ferjan | 10/10 | 5378 days | 1% |
| Nico Welagen | 10/10 | 5379 days | 1% |
| Alan Findlay | 9/10 | 5379 days | 1% |
| Andreas Kristiansen | 10/10 | 5387 days | 1% |
| Arnoldus Bergmans | 10/10 | 5459 days | 1% |
| Kai | 10/10 | 5461 days | 1% |
| Christoph | 9/10 | 5464 days | 1% |
| Jory Singer | 8/10 | 5470 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5475 days | 1% |
| Kimberly St Louis | 10/10 | 5669 days | 1% |
| Lisa Milton | 10/10 | 5692 days | 1% |
| Rob O'Neill | 10/10 | 5701 days | 1% |
| Laura Thrower | 10/10 | 5704 days | 1% |
| Ofir Avimeir | 8/10 | 5708 days | 1% |
| Zachary Steinberg | 9/10 | 5709 days | 1% |
| Brian Jones | 9/10 | 5709 days | 1% |
| Sarah and Uli Glas | 9/10 | 5710 days | 1% |
| Boi Sagarra | 8/10 | 5713 days | 1% |
| John Tinus | 8/10 | 5714 days | 1% |
| Stefanie | 8/10 | 5715 days | 1% |
| Alex | 8/10 | 5717 days | 1% |
| Fredrik Thornell | 8/10 | 5720 days | 1% |
| Siggi Wick | 9/10 | 5721 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5722 days | 1% |
| Estel la Prado | 9/10 | 5724 days | 1% |
| Jeff and Carey Brown | 10/10 | 5729 days | 1% |
| LandJ | 7/10 | 5730 days | 1% |
| Katie Mitchell | 9/10 | 5730 days | 1% |
| Galamez | 9/10 | 5737 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5740 days | 1% |
| Thomas Reidinger | 6/10 | 5744 days | 1% |
| G Elliason | 9/10 | 5744 days | 1% |
| Van den Borne | 9/10 | 5744 days | 1% |
| Laura Hayes | 10/10 | 5745 days | 1% |
| Brian Lind | 7/10 | 5745 days | 1% |
| Chloe Finster | 10/10 | 5745 days | 1% |
| Jol Balder | 8/10 | 5746 days | 1% |
| Robert Haidt | 10/10 | 5751 days | 1% |
| VisualDelight | 10/10 | 5973 days | 1% |
| lindam | 10/10 | 6064 days | 1% |
| Martina Pankova | 9/10 | 6070 days | 1% |
| Neal | 10/10 | 6108 days | 1% |
| Bouwma | 8/10 | 6116 days | 1% |
| Mattias Thorm | 9/10 | 6117 days | 1% |
| Erik Hummelmose | 8/10 | 6119 days | 1% |
| Ian E | 10/10 | 6119 days | 1% |
| Kane Chain | 9/10 | 6140 days | 1% |
| johnma | 10/10 | 6174 days | 1% |
| ingeh | 8/10 | 6178 days | 1% |
| Jerry | 8/10 | 6185 days | 1% |
| Decuq | 10/10 | 6196 days | 1% |
| Carl and Angela Rapihana | 8/10 | 6208 days | 1% |
| Graham Butt | 10/10 | 6208 days | 1% |
| tessac | 9/10 | 6310 days | 1% |
| andriesk | 9/10 | 6311 days | 1% |
| nickm | 10/10 | 6384 days | 1% |
| Sofie | 10/10 | 6399 days | 1% |
| streneer | 10/10 | 6416 days | 1% |
| ElleGermany | 9/10 | 6417 days | 1% |
| JonK | 9/10 | 6417 days | 1% |
| NicolaW | 10/10 | 6421 days | 1% |
| DirkGermany | 10/10 | 6424 days | 1% |
| Bridget | 10/10 | 6434 days | 1% |
| Roy | 9/10 | 6434 days | 1% |
| HenizV | 9/10 | 6439 days | 1% |
| CraigB | 10/10 | 6441 days | 1% |
| familytravellers | 7/10 | 6441 days | 1% |
| Rissmann | 10/10 | 6445 days | 1% |
| Sara Hansson | 10/10 | 6446 days | 1% |
| Frank | 9/10 | 6447 days | 1% |
| KurtL | 8/10 | 6447 days | 1% |
| SteveW | 8/10 | 6448 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6449 days | 1% |
| Joel | 9/10 | 6449 days | 1% |
| Suzie Lechner | 10/10 | 6449 days | 1% |
| KathrinS | 9/10 | 6449 days | 1% |
| Debbie | 7/10 | 6453 days | 1% |
| Stolz | 9/10 | 6453 days | 1% |
| Ulli | 9/10 | 6453 days | 1% |
| Tatjane | 8/10 | 6461 days | 1% |
| Claudia | 8/10 | 6462 days | 1% |
| SimonR | 8/10 | 6463 days | 1% |
| SonjaG | 9/10 | 6463 days | 1% |
| Steve | 7/10 | 6463 days | 1% |
| AdelineC | 8/10 | 6464 days | 1% |
| RobC1 | 7/10 | 6464 days | 1% |
| RichardB1 | 6/10 | 6464 days | 1% |
| JoT | 7/10 | 6464 days | 1% |
| Olly | 10/10 | 6465 days | 1% |
| Klaus | 9/10 | 6466 days | 1% |
| JanetH | 8/10 | 6477 days | 1% |
| StefanieW | 8/10 | 6479 days | 1% |
| schenk | 8/10 | 6480 days | 1% |
| groenewold | 7/10 | 6494 days | 1% |
| Jessy | 5/10 | 6494 days | 1% |
| Wilco | 7/10 | 6502 days | 1% |
| Bernd | 8/10 | 6502 days | 1% |
| Ruben | 8/10 | 6503 days | 1% |
| Paul | 10/10 | 6506 days | 1% |
| Loren | 10/10 | 6534 days | 1% |
| DavidO | 8/10 | 6536 days | 1% |
| Peter | 9/10 | 6542 days | 1% |
| David | 10/10 | 6543 days | 1% |
| Kylie | 8/10 | 6546 days | 1% |
| Ursula | 9/10 | 6560 days | 1% |
| Carrie | 8/10 | 6576 days | 1% |
| David | 10/10 | 6607 days | 1% |
| Howard | 9/10 | 6625 days | 1% |
| Chris | 8/10 | 6806 days | 1% |
| Anthony | 8/10 | 6809 days | 1% |
| Sandra Verbaarschot | 10/10 | 6809 days | 1% |
| Omer Harron | 10/10 | 6809 days | 1% |
| angela | 9/10 | 6812 days | 1% |
| Kerstin Brantryd | 5/10 | 6816 days | 1% |
| Sanne | 10/10 | 6822 days | 1% |
| Tessa McCormick | 9/10 | 6826 days | 1% |
| Sally and David Wallis | 10/10 | 6829 days | 1% |
| Martens | 8/10 | 6830 days | 1% |
| Dan Adamson | 9/10 | 6848 days | 1% |
| Ben | 7/10 | 6914 days | 1% |
| Kirsty Ranger | 9/10 | 6989 days | 1% |
| Andy Chapman | 8/10 | 7031 days | 1% |
| ranker_34 | 5/10 | 7031 days | 1% |
| Jo | 9/10 | 7031 days | 1% |
| Matous | 10/10 | 7150 days | 1% |
| Stefan&Gerte | 7/10 | 7153 days | 1% |
| Jenny | 9/10 | 7153 days | 1% |
| Paul Yacoumis | 8/10 | 7157 days | 1% |
| Deloraine | 7/10 | 7166 days | 1% |
| Denise Nick | 9/10 | 7168 days | 1% |
| Daniel | 10/10 | 7173 days | 1% |
| Martin Smith | 8/10 | 7176 days | 1% |
| Susan | 8/10 | 7179 days | 1% |
| sebastian | 10/10 | 7180 days | 1% |
| ranker_110 | 9/10 | 7187 days | 1% |
| Stefan | 8/10 | 7189 days | 1% |
| Svenja | 7/10 | 7194 days | 1% |
| Hirsh | 10/10 | 7199 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
-3.93% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 47 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 | -3.87% |
| 198 | -3.89% |
| 199 | -3.91% |
| 200 | -3.93% |
| 201 | -3.95% |
| 202 | -3.97% |
| 203 | -3.99% |
| … | … |
Balancing Adjustment
4.20% 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
80%
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.