Kia ora, 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 203 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 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
78.32%
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 | 95 days | 100% |
| Chris Creed | 10/10 | 307 days | 96% |
| Hirash | 1/10 | 369 days | 38% |
| Kat | 1/10 | 460 days | 36% |
| Remy and Rebecca Mans | 6/10 | 3207 days | 2% |
| Jocelyn Booy | 9/10 | 3232 days | 2% |
| David Horley | 7/10 | 3246 days | 2% |
| Vallee Manon | 9/10 | 3279 days | 2% |
| Nanda Dyke | 9/10 | 3305 days | 2% |
| victor diego | 7/10 | 3323 days | 2% |
| Samuel Michalak | 10/10 | 3328 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3552 days | 2% |
| Benedikt Hang | 8/10 | 3559 days | 2% |
| Jorge Gonzoleis | 8/10 | 3562 days | 2% |
| Lauren Goebel | 10/10 | 3566 days | 2% |
| Rahel Baufeld | 8/10 | 3574 days | 2% |
| Peter Hodgson | 10/10 | 3600 days | 1% |
| doug fiddes | 10/10 | 3626 days | 1% |
| Dan Wilson | 7/10 | 3642 days | 1% |
| Corrie Medinea | 8/10 | 3650 days | 1% |
| Gracen Verheryden | 10/10 | 3653 days | 1% |
| Jennifer Hoyles | 10/10 | 3657 days | 1% |
| Lenka Korinkova | 7/10 | 3919 days | 1% |
| Rebecca Wharton | 9/10 | 3947 days | 1% |
| Andy Jobst | 8/10 | 4022 days | 1% |
| Rawiri johnston | 10/10 | 4205 days | 0% |
| Marek Heiurich | 7/10 | 4275 days | 0% |
| Matt Weston | 10/10 | 4280 days | 0% |
| Henrik Bours | 8/10 | 4281 days | 0% |
| Svenja Trubenbach | 9/10 | 4281 days | 0% |
| Sheila Galpin | 9/10 | 4295 days | 0% |
| Guillaume | 9/10 | 4306 days | 0% |
| Andreas Jung | 9/10 | 4321 days | 0% |
| Inga Memmen | 10/10 | 4323 days | 0% |
| Alacchi Moustier | 10/10 | 4338 days | 0% |
| Guy David | 9/10 | 4346 days | 0% |
| Michael Rohn | 8/10 | 4353 days | 0% |
| Rainer | 9/10 | 4637 days | 1% |
| Clarissa Hanck | 9/10 | 4637 days | 1% |
| Michael Heuer | 9/10 | 4639 days | 1% |
| Oram Salem | 6/10 | 4639 days | 1% |
| Lea Roser | 9/10 | 4648 days | 1% |
| Jitka Krejcova | 10/10 | 4648 days | 1% |
| Michal Sturma | 9/10 | 4648 days | 1% |
| Stientje van den Heuvel | 8/10 | 4648 days | 1% |
| Tom Somers | 9/10 | 4648 days | 1% |
| Brandon Wells | 8/10 | 4649 days | 1% |
| Tim Vennewold | 9/10 | 4649 days | 1% |
| Katharina | 8/10 | 4649 days | 1% |
| Lorna and Seb | 9/10 | 4665 days | 1% |
| Kristin Denny | 8/10 | 4672 days | 1% |
| Wendy Ward | 10/10 | 4678 days | 1% |
| Michal Maly | 9/10 | 4688 days | 1% |
| Michael Nolan | 10/10 | 4690 days | 1% |
| Hanneke P | 7/10 | 4721 days | 1% |
| Katharina Pape | 8/10 | 4750 days | 1% |
| Camille | 7/10 | 4757 days | 1% |
| Petr Stepanek | 10/10 | 5019 days | 1% |
| Larry Curtiss | 10/10 | 5024 days | 1% |
| nztintin | 10/10 | 5027 days | 1% |
| Marion Hassink | 7/10 | 5033 days | 1% |
| Stam | 6/10 | 5038 days | 1% |
| Ed & Katie Riches | 8/10 | 5039 days | 1% |
| Seth & Carla | 10/10 | 5041 days | 1% |
| Peter Putz | 10/10 | 5041 days | 1% |
| Tadej Ferjan | 10/10 | 5041 days | 1% |
| Nico Welagen | 10/10 | 5042 days | 1% |
| Alan Findlay | 9/10 | 5042 days | 1% |
| Andreas Kristiansen | 10/10 | 5050 days | 1% |
| Arnoldus Bergmans | 10/10 | 5122 days | 1% |
| Kai | 10/10 | 5124 days | 1% |
| Christoph | 9/10 | 5127 days | 1% |
| Jory Singer | 8/10 | 5133 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5138 days | 1% |
| Kimberly St Louis | 10/10 | 5332 days | 1% |
| Lisa Milton | 10/10 | 5355 days | 1% |
| Rob O'Neill | 10/10 | 5364 days | 1% |
| Laura Thrower | 10/10 | 5367 days | 1% |
| Ofir Avimeir | 8/10 | 5371 days | 1% |
| Zachary Steinberg | 9/10 | 5372 days | 1% |
| Brian Jones | 9/10 | 5372 days | 1% |
| Sarah and Uli Glas | 9/10 | 5373 days | 1% |
| Boi Sagarra | 8/10 | 5376 days | 1% |
| John Tinus | 8/10 | 5377 days | 1% |
| Stefanie | 8/10 | 5378 days | 1% |
| Alex | 8/10 | 5380 days | 1% |
| Fredrik Thornell | 8/10 | 5383 days | 1% |
| Siggi Wick | 9/10 | 5384 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5385 days | 1% |
| Estel la Prado | 9/10 | 5387 days | 1% |
| Jeff and Carey Brown | 10/10 | 5392 days | 1% |
| LandJ | 7/10 | 5393 days | 1% |
| Katie Mitchell | 9/10 | 5393 days | 1% |
| Galamez | 9/10 | 5400 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5403 days | 1% |
| Thomas Reidinger | 6/10 | 5407 days | 1% |
| G Elliason | 9/10 | 5407 days | 1% |
| Van den Borne | 9/10 | 5407 days | 1% |
| Laura Hayes | 10/10 | 5408 days | 1% |
| Brian Lind | 7/10 | 5408 days | 1% |
| Chloe Finster | 10/10 | 5408 days | 1% |
| Jol Balder | 8/10 | 5409 days | 1% |
| Robert Haidt | 10/10 | 5414 days | 1% |
| VisualDelight | 10/10 | 5636 days | 1% |
| lindam | 10/10 | 5727 days | 1% |
| Martina Pankova | 9/10 | 5733 days | 1% |
| Neal | 10/10 | 5771 days | 1% |
| Bouwma | 8/10 | 5779 days | 1% |
| Mattias Thorm | 9/10 | 5780 days | 1% |
| Erik Hummelmose | 8/10 | 5782 days | 1% |
| Ian E | 10/10 | 5782 days | 1% |
| Kane Chain | 9/10 | 5803 days | 1% |
| johnma | 10/10 | 5837 days | 1% |
| ingeh | 8/10 | 5841 days | 1% |
| Jerry | 8/10 | 5848 days | 1% |
| Decuq | 10/10 | 5859 days | 1% |
| Carl and Angela Rapihana | 8/10 | 5871 days | 1% |
| Graham Butt | 10/10 | 5871 days | 1% |
| tessac | 9/10 | 5973 days | 1% |
| andriesk | 9/10 | 5974 days | 1% |
| nickm | 10/10 | 6047 days | 1% |
| Sofie | 10/10 | 6062 days | 1% |
| streneer | 10/10 | 6079 days | 1% |
| ElleGermany | 9/10 | 6080 days | 1% |
| JonK | 9/10 | 6080 days | 1% |
| NicolaW | 10/10 | 6084 days | 1% |
| DirkGermany | 10/10 | 6087 days | 1% |
| Bridget | 10/10 | 6097 days | 1% |
| Roy | 9/10 | 6097 days | 1% |
| HenizV | 9/10 | 6102 days | 1% |
| CraigB | 10/10 | 6104 days | 1% |
| familytravellers | 7/10 | 6104 days | 1% |
| Rissmann | 10/10 | 6108 days | 1% |
| Sara Hansson | 10/10 | 6109 days | 1% |
| Frank | 9/10 | 6110 days | 1% |
| KurtL | 8/10 | 6110 days | 1% |
| SteveW | 8/10 | 6111 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6112 days | 1% |
| Joel | 9/10 | 6112 days | 1% |
| Suzie Lechner | 10/10 | 6112 days | 1% |
| KathrinS | 9/10 | 6112 days | 1% |
| Debbie | 7/10 | 6116 days | 1% |
| Stolz | 9/10 | 6116 days | 1% |
| Ulli | 9/10 | 6117 days | 1% |
| Tatjane | 8/10 | 6124 days | 1% |
| Claudia | 8/10 | 6125 days | 1% |
| SimonR | 8/10 | 6126 days | 1% |
| SonjaG | 9/10 | 6126 days | 1% |
| Steve | 7/10 | 6126 days | 1% |
| AdelineC | 8/10 | 6127 days | 1% |
| RobC1 | 7/10 | 6127 days | 1% |
| RichardB1 | 6/10 | 6127 days | 1% |
| JoT | 7/10 | 6127 days | 1% |
| Olly | 10/10 | 6128 days | 1% |
| Klaus | 9/10 | 6129 days | 1% |
| JanetH | 8/10 | 6140 days | 1% |
| StefanieW | 8/10 | 6142 days | 1% |
| schenk | 8/10 | 6143 days | 1% |
| groenewold | 7/10 | 6157 days | 1% |
| Jessy | 5/10 | 6157 days | 1% |
| Wilco | 7/10 | 6165 days | 1% |
| Bernd | 8/10 | 6165 days | 1% |
| Ruben | 8/10 | 6166 days | 1% |
| Paul | 10/10 | 6169 days | 1% |
| Loren | 10/10 | 6197 days | 1% |
| DavidO | 8/10 | 6199 days | 1% |
| Peter | 9/10 | 6205 days | 1% |
| David | 10/10 | 6206 days | 1% |
| Kylie | 8/10 | 6210 days | 1% |
| Ursula | 9/10 | 6223 days | 1% |
| Carrie | 8/10 | 6239 days | 1% |
| David | 10/10 | 6270 days | 1% |
| Howard | 9/10 | 6288 days | 1% |
| Chris | 8/10 | 6469 days | 1% |
| Anthony | 8/10 | 6472 days | 1% |
| Sandra Verbaarschot | 10/10 | 6472 days | 1% |
| Omer Harron | 10/10 | 6472 days | 1% |
| angela | 9/10 | 6475 days | 1% |
| Kerstin Brantryd | 5/10 | 6479 days | 1% |
| Sanne | 10/10 | 6485 days | 1% |
| Tessa McCormick | 9/10 | 6489 days | 1% |
| Sally and David Wallis | 10/10 | 6492 days | 1% |
| Martens | 8/10 | 6493 days | 1% |
| Dan Adamson | 9/10 | 6511 days | 1% |
| Ben | 7/10 | 6577 days | 1% |
| Kirsty Ranger | 9/10 | 6652 days | 1% |
| Andy Chapman | 8/10 | 6694 days | 1% |
| ranker_34 | 5/10 | 6694 days | 1% |
| Jo | 9/10 | 6694 days | 1% |
| Matous | 10/10 | 6813 days | 1% |
| Stefan&Gerte | 7/10 | 6816 days | 1% |
| Jenny | 9/10 | 6816 days | 1% |
| Paul Yacoumis | 8/10 | 6820 days | 1% |
| Deloraine | 7/10 | 6829 days | 1% |
| Denise Nick | 9/10 | 6831 days | 1% |
| Daniel | 10/10 | 6836 days | 1% |
| Martin Smith | 8/10 | 6839 days | 1% |
| Susan | 8/10 | 6842 days | 1% |
| sebastian | 10/10 | 6843 days | 1% |
| ranker_110 | 9/10 | 6850 days | 1% |
| Stefan | 8/10 | 6852 days | 1% |
| Svenja | 7/10 | 6857 days | 1% |
| Hirsh | 10/10 | 6862 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
-1.45% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 71 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 68 | -1.38% |
| 69 | -1.41% |
| 70 | -1.43% |
| 71 | -1.45% |
| 72 | -1.47% |
| 73 | -1.49% |
| 74 | -1.51% |
| … | … |
Balancing Adjustment
3.96% 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.