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
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
74.78%
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 | 83 days | 100% |
| Remy and Rebecca Mans | 6/10 | 2830 days | 6% |
| Jocelyn Booy | 9/10 | 2855 days | 7% |
| David Horley | 7/10 | 2869 days | 7% |
| Vallee Manon | 9/10 | 2902 days | 7% |
| Nanda Dyke | 9/10 | 2928 days | 7% |
| victor diego | 7/10 | 2946 days | 6% |
| Samuel Michalak | 10/10 | 2951 days | 7% |
| Laura Munguira Vadillo | 10/10 | 3175 days | 6% |
| Benedikt Hang | 8/10 | 3182 days | 6% |
| Jorge Gonzoleis | 8/10 | 3185 days | 6% |
| Lauren Goebel | 10/10 | 3189 days | 6% |
| Rahel Baufeld | 8/10 | 3197 days | 6% |
| Peter Hodgson | 10/10 | 3223 days | 6% |
| doug fiddes | 10/10 | 3249 days | 5% |
| Dan Wilson | 7/10 | 3265 days | 5% |
| Corrie Medinea | 8/10 | 3273 days | 5% |
| Gracen Verheryden | 10/10 | 3276 days | 5% |
| Jennifer Hoyles | 10/10 | 3280 days | 5% |
| Lenka Korinkova | 7/10 | 3542 days | 4% |
| Rebecca Wharton | 9/10 | 3570 days | 4% |
| Andy Jobst | 8/10 | 3645 days | 3% |
| Rawiri johnston | 10/10 | 3828 days | 3% |
| Marek Heiurich | 7/10 | 3898 days | 2% |
| Matt Weston | 10/10 | 3903 days | 2% |
| Henrik Bours | 8/10 | 3904 days | 2% |
| Svenja Trubenbach | 9/10 | 3904 days | 2% |
| Sheila Galpin | 9/10 | 3918 days | 2% |
| Guillaume | 9/10 | 3929 days | 2% |
| Andreas Jung | 9/10 | 3944 days | 2% |
| Inga Memmen | 10/10 | 3946 days | 2% |
| Alacchi Moustier | 10/10 | 3961 days | 2% |
| Guy David | 9/10 | 3969 days | 2% |
| Michael Rohn | 8/10 | 3976 days | 2% |
| Rainer | 9/10 | 4260 days | 1% |
| Clarissa Hanck | 9/10 | 4260 days | 1% |
| Michael Heuer | 9/10 | 4262 days | 1% |
| Oram Salem | 6/10 | 4262 days | 0% |
| Lea Roser | 9/10 | 4271 days | 0% |
| Jitka Krejcova | 10/10 | 4271 days | 0% |
| Michal Sturma | 9/10 | 4271 days | 0% |
| Stientje van den Heuvel | 8/10 | 4271 days | 0% |
| Tom Somers | 9/10 | 4271 days | 0% |
| Brandon Wells | 8/10 | 4272 days | 0% |
| Tim Vennewold | 9/10 | 4272 days | 0% |
| Katharina | 8/10 | 4272 days | 0% |
| Lorna and Seb | 9/10 | 4288 days | 0% |
| Kristin Denny | 8/10 | 4295 days | 0% |
| Wendy Ward | 10/10 | 4301 days | 0% |
| Michal Maly | 9/10 | 4311 days | 0% |
| Michael Nolan | 10/10 | 4313 days | 0% |
| Hanneke P | 7/10 | 4344 days | 0% |
| Katharina Pape | 8/10 | 4373 days | 0% |
| Camille | 7/10 | 4380 days | 2% |
| Petr Stepanek | 10/10 | 4642 days | 2% |
| Larry Curtiss | 10/10 | 4647 days | 2% |
| nztintin | 10/10 | 4650 days | 2% |
| Marion Hassink | 7/10 | 4656 days | 2% |
| Stam | 6/10 | 4661 days | 2% |
| Ed & Katie Riches | 8/10 | 4662 days | 2% |
| Seth & Carla | 10/10 | 4664 days | 2% |
| Peter Putz | 10/10 | 4664 days | 2% |
| Tadej Ferjan | 10/10 | 4664 days | 2% |
| Nico Welagen | 10/10 | 4665 days | 2% |
| Alan Findlay | 9/10 | 4665 days | 2% |
| Andreas Kristiansen | 10/10 | 4673 days | 2% |
| Arnoldus Bergmans | 10/10 | 4745 days | 2% |
| Kai | 10/10 | 4747 days | 2% |
| Christoph | 9/10 | 4750 days | 2% |
| Jory Singer | 8/10 | 4756 days | 2% |
| Scott & Madeleine Bancroft | 9/10 | 4761 days | 2% |
| Kimberly St Louis | 10/10 | 4955 days | 2% |
| Lisa Milton | 10/10 | 4978 days | 2% |
| Rob O'Neill | 10/10 | 4987 days | 2% |
| Laura Thrower | 10/10 | 4990 days | 2% |
| Ofir Avimeir | 8/10 | 4994 days | 2% |
| Zachary Steinberg | 9/10 | 4995 days | 2% |
| Brian Jones | 9/10 | 4995 days | 2% |
| Sarah and Uli Glas | 9/10 | 4996 days | 2% |
| Boi Sagarra | 8/10 | 4999 days | 2% |
| John Tinus | 8/10 | 5000 days | 2% |
| Stefanie | 8/10 | 5001 days | 2% |
| Alex | 8/10 | 5003 days | 2% |
| Fredrik Thornell | 8/10 | 5006 days | 2% |
| Siggi Wick | 9/10 | 5007 days | 2% |
| Bruce & Elaine Chote | 10/10 | 5008 days | 2% |
| Estel la Prado | 9/10 | 5010 days | 2% |
| Jeff and Carey Brown | 10/10 | 5015 days | 2% |
| LandJ | 7/10 | 5016 days | 2% |
| Katie Mitchell | 9/10 | 5016 days | 2% |
| Galamez | 9/10 | 5023 days | 2% |
| Mr & Mrs Mackie | 9/10 | 5026 days | 2% |
| Thomas Reidinger | 6/10 | 5030 days | 2% |
| G Elliason | 9/10 | 5030 days | 2% |
| Van den Borne | 9/10 | 5030 days | 2% |
| Laura Hayes | 10/10 | 5031 days | 2% |
| Brian Lind | 7/10 | 5031 days | 2% |
| Chloe Finster | 10/10 | 5031 days | 2% |
| Jol Balder | 8/10 | 5032 days | 2% |
| Robert Haidt | 10/10 | 5037 days | 2% |
| VisualDelight | 10/10 | 5259 days | 2% |
| lindam | 10/10 | 5350 days | 2% |
| Martina Pankova | 9/10 | 5356 days | 2% |
| Neal | 10/10 | 5394 days | 2% |
| Bouwma | 8/10 | 5402 days | 2% |
| Mattias Thorm | 9/10 | 5403 days | 2% |
| Erik Hummelmose | 8/10 | 5405 days | 2% |
| Ian E | 10/10 | 5405 days | 2% |
| Kane Chain | 9/10 | 5426 days | 2% |
| johnma | 10/10 | 5460 days | 2% |
| ingeh | 8/10 | 5464 days | 2% |
| Jerry | 8/10 | 5471 days | 2% |
| Decuq | 10/10 | 5482 days | 2% |
| Carl and Angela Rapihana | 8/10 | 5494 days | 2% |
| Graham Butt | 10/10 | 5494 days | 2% |
| tessac | 9/10 | 5596 days | 2% |
| andriesk | 9/10 | 5597 days | 2% |
| nickm | 10/10 | 5670 days | 2% |
| Sofie | 10/10 | 5685 days | 2% |
| streneer | 10/10 | 5702 days | 2% |
| ElleGermany | 9/10 | 5703 days | 2% |
| JonK | 9/10 | 5703 days | 2% |
| NicolaW | 10/10 | 5707 days | 2% |
| DirkGermany | 10/10 | 5710 days | 2% |
| Bridget | 10/10 | 5720 days | 2% |
| Roy | 9/10 | 5720 days | 2% |
| HenizV | 9/10 | 5725 days | 2% |
| CraigB | 10/10 | 5727 days | 2% |
| familytravellers | 7/10 | 5727 days | 2% |
| Rissmann | 10/10 | 5731 days | 2% |
| Sara Hansson | 10/10 | 5732 days | 2% |
| Frank | 9/10 | 5733 days | 2% |
| KurtL | 8/10 | 5733 days | 2% |
| SteveW | 8/10 | 5734 days | 2% |
| Peter Bowen-Simpkins | 9/10 | 5735 days | 2% |
| Joel | 9/10 | 5735 days | 2% |
| Suzie Lechner | 10/10 | 5735 days | 2% |
| KathrinS | 9/10 | 5735 days | 2% |
| Debbie | 7/10 | 5739 days | 2% |
| Stolz | 9/10 | 5739 days | 2% |
| Ulli | 9/10 | 5740 days | 2% |
| Tatjane | 8/10 | 5747 days | 2% |
| Claudia | 8/10 | 5748 days | 2% |
| SimonR | 8/10 | 5749 days | 2% |
| SonjaG | 9/10 | 5749 days | 2% |
| Steve | 7/10 | 5749 days | 2% |
| AdelineC | 8/10 | 5750 days | 2% |
| RobC1 | 7/10 | 5750 days | 2% |
| RichardB1 | 6/10 | 5750 days | 2% |
| JoT | 7/10 | 5750 days | 2% |
| Olly | 10/10 | 5751 days | 2% |
| Klaus | 9/10 | 5752 days | 2% |
| JanetH | 8/10 | 5763 days | 2% |
| StefanieW | 8/10 | 5765 days | 2% |
| schenk | 8/10 | 5766 days | 2% |
| groenewold | 7/10 | 5780 days | 2% |
| Jessy | 5/10 | 5780 days | 2% |
| Wilco | 7/10 | 5788 days | 2% |
| Bernd | 8/10 | 5789 days | 2% |
| Ruben | 8/10 | 5789 days | 2% |
| Paul | 10/10 | 5792 days | 2% |
| Loren | 10/10 | 5820 days | 2% |
| DavidO | 8/10 | 5822 days | 2% |
| Peter | 9/10 | 5828 days | 2% |
| David | 10/10 | 5829 days | 2% |
| Kylie | 8/10 | 5833 days | 2% |
| Ursula | 9/10 | 5846 days | 2% |
| Carrie | 8/10 | 5862 days | 2% |
| David | 10/10 | 5893 days | 2% |
| Howard | 9/10 | 5911 days | 2% |
| Chris | 8/10 | 6092 days | 2% |
| Anthony | 8/10 | 6095 days | 2% |
| Sandra Verbaarschot | 10/10 | 6095 days | 2% |
| Omer Harron | 10/10 | 6095 days | 2% |
| angela | 9/10 | 6098 days | 2% |
| Kerstin Brantryd | 5/10 | 6102 days | 2% |
| Sanne | 10/10 | 6108 days | 2% |
| Tessa McCormick | 9/10 | 6112 days | 2% |
| Sally and David Wallis | 10/10 | 6115 days | 2% |
| Martens | 8/10 | 6116 days | 2% |
| Dan Adamson | 9/10 | 6134 days | 2% |
| Ben | 7/10 | 6200 days | 2% |
| Kirsty Ranger | 9/10 | 6275 days | 2% |
| Andy Chapman | 8/10 | 6317 days | 2% |
| ranker_34 | 5/10 | 6317 days | 2% |
| Jo | 9/10 | 6317 days | 2% |
| Matous | 10/10 | 6436 days | 2% |
| Stefan&Gerte | 7/10 | 6439 days | 2% |
| Jenny | 9/10 | 6439 days | 2% |
| Paul Yacoumis | 8/10 | 6443 days | 2% |
| Deloraine | 7/10 | 6452 days | 2% |
| Denise Nick | 9/10 | 6454 days | 2% |
| Daniel | 10/10 | 6459 days | 2% |
| Martin Smith | 8/10 | 6462 days | 2% |
| Susan | 8/10 | 6465 days | 2% |
| sebastian | 10/10 | 6466 days | 2% |
| ranker_110 | 9/10 | 6473 days | 2% |
| Stefan | 8/10 | 6475 days | 2% |
| Svenja | 7/10 | 6480 days | 2% |
| Hirsh | 10/10 | 6485 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
-1.50% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 43 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 74 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 71 | -1.44% |
| 72 | -1.46% |
| 73 | -1.48% |
| 74 | -1.50% |
| 75 | -1.52% |
| 76 | -1.54% |
| 77 | -1.56% |
| … | … |
Balancing Adjustment
5.35% 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
79%
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.