G'day, 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
78.35%
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 | 109 days | 100% |
| Chris Creed | 10/10 | 321 days | 96% |
| Hirash | 1/10 | 383 days | 38% |
| Kat | 1/10 | 474 days | 36% |
| Remy and Rebecca Mans | 6/10 | 3221 days | 2% |
| Jocelyn Booy | 9/10 | 3246 days | 2% |
| David Horley | 7/10 | 3260 days | 2% |
| Vallee Manon | 9/10 | 3293 days | 2% |
| Nanda Dyke | 9/10 | 3319 days | 2% |
| victor diego | 7/10 | 3337 days | 2% |
| Samuel Michalak | 10/10 | 3342 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3566 days | 2% |
| Benedikt Hang | 8/10 | 3573 days | 2% |
| Jorge Gonzoleis | 8/10 | 3576 days | 2% |
| Lauren Goebel | 10/10 | 3580 days | 2% |
| Rahel Baufeld | 8/10 | 3588 days | 2% |
| Peter Hodgson | 10/10 | 3614 days | 1% |
| doug fiddes | 10/10 | 3640 days | 1% |
| Dan Wilson | 7/10 | 3656 days | 1% |
| Corrie Medinea | 8/10 | 3664 days | 1% |
| Gracen Verheryden | 10/10 | 3667 days | 1% |
| Jennifer Hoyles | 10/10 | 3671 days | 1% |
| Lenka Korinkova | 7/10 | 3933 days | 1% |
| Rebecca Wharton | 9/10 | 3961 days | 1% |
| Andy Jobst | 8/10 | 4036 days | 1% |
| Rawiri johnston | 10/10 | 4219 days | 0% |
| Marek Heiurich | 7/10 | 4289 days | 0% |
| Matt Weston | 10/10 | 4294 days | 0% |
| Henrik Bours | 8/10 | 4295 days | 0% |
| Svenja Trubenbach | 9/10 | 4295 days | 0% |
| Sheila Galpin | 9/10 | 4309 days | 0% |
| Guillaume | 9/10 | 4320 days | 0% |
| Andreas Jung | 9/10 | 4335 days | 0% |
| Inga Memmen | 10/10 | 4337 days | 0% |
| Alacchi Moustier | 10/10 | 4352 days | 0% |
| Guy David | 9/10 | 4360 days | 0% |
| Michael Rohn | 8/10 | 4367 days | 0% |
| Rainer | 9/10 | 4651 days | 1% |
| Clarissa Hanck | 9/10 | 4651 days | 1% |
| Michael Heuer | 9/10 | 4653 days | 1% |
| Oram Salem | 6/10 | 4653 days | 1% |
| Lea Roser | 9/10 | 4662 days | 1% |
| Jitka Krejcova | 10/10 | 4662 days | 1% |
| Michal Sturma | 9/10 | 4662 days | 1% |
| Stientje van den Heuvel | 8/10 | 4662 days | 1% |
| Tom Somers | 9/10 | 4662 days | 1% |
| Brandon Wells | 8/10 | 4663 days | 1% |
| Tim Vennewold | 9/10 | 4663 days | 1% |
| Katharina | 8/10 | 4663 days | 1% |
| Lorna and Seb | 9/10 | 4679 days | 1% |
| Kristin Denny | 8/10 | 4686 days | 1% |
| Wendy Ward | 10/10 | 4692 days | 1% |
| Michal Maly | 9/10 | 4702 days | 1% |
| Michael Nolan | 10/10 | 4704 days | 1% |
| Hanneke P | 7/10 | 4735 days | 1% |
| Katharina Pape | 8/10 | 4764 days | 1% |
| Camille | 7/10 | 4771 days | 1% |
| Petr Stepanek | 10/10 | 5033 days | 1% |
| Larry Curtiss | 10/10 | 5038 days | 1% |
| nztintin | 10/10 | 5041 days | 1% |
| Marion Hassink | 7/10 | 5047 days | 1% |
| Stam | 6/10 | 5052 days | 1% |
| Ed & Katie Riches | 8/10 | 5053 days | 1% |
| Seth & Carla | 10/10 | 5055 days | 1% |
| Peter Putz | 10/10 | 5055 days | 1% |
| Tadej Ferjan | 10/10 | 5055 days | 1% |
| Nico Welagen | 10/10 | 5056 days | 1% |
| Alan Findlay | 9/10 | 5056 days | 1% |
| Andreas Kristiansen | 10/10 | 5064 days | 1% |
| Arnoldus Bergmans | 10/10 | 5136 days | 1% |
| Kai | 10/10 | 5138 days | 1% |
| Christoph | 9/10 | 5141 days | 1% |
| Jory Singer | 8/10 | 5147 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5152 days | 1% |
| Kimberly St Louis | 10/10 | 5346 days | 1% |
| Lisa Milton | 10/10 | 5369 days | 1% |
| Rob O'Neill | 10/10 | 5378 days | 1% |
| Laura Thrower | 10/10 | 5381 days | 1% |
| Ofir Avimeir | 8/10 | 5385 days | 1% |
| Zachary Steinberg | 9/10 | 5386 days | 1% |
| Brian Jones | 9/10 | 5386 days | 1% |
| Sarah and Uli Glas | 9/10 | 5387 days | 1% |
| Boi Sagarra | 8/10 | 5390 days | 1% |
| John Tinus | 8/10 | 5391 days | 1% |
| Stefanie | 8/10 | 5392 days | 1% |
| Alex | 8/10 | 5394 days | 1% |
| Fredrik Thornell | 8/10 | 5397 days | 1% |
| Siggi Wick | 9/10 | 5398 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5399 days | 1% |
| Estel la Prado | 9/10 | 5401 days | 1% |
| Jeff and Carey Brown | 10/10 | 5406 days | 1% |
| LandJ | 7/10 | 5407 days | 1% |
| Katie Mitchell | 9/10 | 5407 days | 1% |
| Galamez | 9/10 | 5414 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5417 days | 1% |
| Thomas Reidinger | 6/10 | 5421 days | 1% |
| G Elliason | 9/10 | 5421 days | 1% |
| Van den Borne | 9/10 | 5421 days | 1% |
| Laura Hayes | 10/10 | 5422 days | 1% |
| Brian Lind | 7/10 | 5422 days | 1% |
| Chloe Finster | 10/10 | 5422 days | 1% |
| Jol Balder | 8/10 | 5423 days | 1% |
| Robert Haidt | 10/10 | 5428 days | 1% |
| VisualDelight | 10/10 | 5650 days | 1% |
| lindam | 10/10 | 5741 days | 1% |
| Martina Pankova | 9/10 | 5747 days | 1% |
| Neal | 10/10 | 5785 days | 1% |
| Bouwma | 8/10 | 5793 days | 1% |
| Mattias Thorm | 9/10 | 5794 days | 1% |
| Erik Hummelmose | 8/10 | 5796 days | 1% |
| Ian E | 10/10 | 5796 days | 1% |
| Kane Chain | 9/10 | 5817 days | 1% |
| johnma | 10/10 | 5851 days | 1% |
| ingeh | 8/10 | 5855 days | 1% |
| Jerry | 8/10 | 5862 days | 1% |
| Decuq | 10/10 | 5873 days | 1% |
| Carl and Angela Rapihana | 8/10 | 5885 days | 1% |
| Graham Butt | 10/10 | 5885 days | 1% |
| tessac | 9/10 | 5987 days | 1% |
| andriesk | 9/10 | 5988 days | 1% |
| nickm | 10/10 | 6061 days | 1% |
| Sofie | 10/10 | 6076 days | 1% |
| streneer | 10/10 | 6093 days | 1% |
| ElleGermany | 9/10 | 6094 days | 1% |
| JonK | 9/10 | 6094 days | 1% |
| NicolaW | 10/10 | 6098 days | 1% |
| DirkGermany | 10/10 | 6101 days | 1% |
| Bridget | 10/10 | 6111 days | 1% |
| Roy | 9/10 | 6111 days | 1% |
| HenizV | 9/10 | 6116 days | 1% |
| CraigB | 10/10 | 6118 days | 1% |
| familytravellers | 7/10 | 6118 days | 1% |
| Rissmann | 10/10 | 6122 days | 1% |
| Sara Hansson | 10/10 | 6123 days | 1% |
| Frank | 9/10 | 6124 days | 1% |
| KurtL | 8/10 | 6124 days | 1% |
| SteveW | 8/10 | 6125 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6126 days | 1% |
| Joel | 9/10 | 6126 days | 1% |
| Suzie Lechner | 10/10 | 6126 days | 1% |
| KathrinS | 9/10 | 6126 days | 1% |
| Debbie | 7/10 | 6130 days | 1% |
| Stolz | 9/10 | 6130 days | 1% |
| Ulli | 9/10 | 6131 days | 1% |
| Tatjane | 8/10 | 6138 days | 1% |
| Claudia | 8/10 | 6139 days | 1% |
| SimonR | 8/10 | 6140 days | 1% |
| SonjaG | 9/10 | 6140 days | 1% |
| Steve | 7/10 | 6140 days | 1% |
| AdelineC | 8/10 | 6141 days | 1% |
| RobC1 | 7/10 | 6141 days | 1% |
| RichardB1 | 6/10 | 6141 days | 1% |
| JoT | 7/10 | 6141 days | 1% |
| Olly | 10/10 | 6142 days | 1% |
| Klaus | 9/10 | 6143 days | 1% |
| JanetH | 8/10 | 6154 days | 1% |
| StefanieW | 8/10 | 6156 days | 1% |
| schenk | 8/10 | 6157 days | 1% |
| groenewold | 7/10 | 6171 days | 1% |
| Jessy | 5/10 | 6171 days | 1% |
| Wilco | 7/10 | 6179 days | 1% |
| Bernd | 8/10 | 6180 days | 1% |
| Ruben | 8/10 | 6180 days | 1% |
| Paul | 10/10 | 6183 days | 1% |
| Loren | 10/10 | 6211 days | 1% |
| DavidO | 8/10 | 6213 days | 1% |
| Peter | 9/10 | 6219 days | 1% |
| David | 10/10 | 6220 days | 1% |
| Kylie | 8/10 | 6224 days | 1% |
| Ursula | 9/10 | 6237 days | 1% |
| Carrie | 8/10 | 6253 days | 1% |
| David | 10/10 | 6284 days | 1% |
| Howard | 9/10 | 6302 days | 1% |
| Chris | 8/10 | 6483 days | 1% |
| Anthony | 8/10 | 6486 days | 1% |
| Sandra Verbaarschot | 10/10 | 6486 days | 1% |
| Omer Harron | 10/10 | 6486 days | 1% |
| angela | 9/10 | 6489 days | 1% |
| Kerstin Brantryd | 5/10 | 6493 days | 1% |
| Sanne | 10/10 | 6499 days | 1% |
| Tessa McCormick | 9/10 | 6503 days | 1% |
| Sally and David Wallis | 10/10 | 6506 days | 1% |
| Martens | 8/10 | 6507 days | 1% |
| Dan Adamson | 9/10 | 6525 days | 1% |
| Ben | 7/10 | 6591 days | 1% |
| Kirsty Ranger | 9/10 | 6666 days | 1% |
| Andy Chapman | 8/10 | 6708 days | 1% |
| ranker_34 | 5/10 | 6708 days | 1% |
| Jo | 9/10 | 6708 days | 1% |
| Matous | 10/10 | 6827 days | 1% |
| Stefan&Gerte | 7/10 | 6830 days | 1% |
| Jenny | 9/10 | 6830 days | 1% |
| Paul Yacoumis | 8/10 | 6834 days | 1% |
| Deloraine | 7/10 | 6843 days | 1% |
| Denise Nick | 9/10 | 6845 days | 1% |
| Daniel | 10/10 | 6850 days | 1% |
| Martin Smith | 8/10 | 6853 days | 1% |
| Susan | 8/10 | 6856 days | 1% |
| sebastian | 10/10 | 6857 days | 1% |
| ranker_110 | 9/10 | 6864 days | 1% |
| Stefan | 8/10 | 6866 days | 1% |
| Svenja | 7/10 | 6871 days | 1% |
| Hirsh | 10/10 | 6876 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
-1.72% 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 85 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 82 | -1.66% |
| 83 | -1.68% |
| 84 | -1.70% |
| 85 | -1.72% |
| 86 | -1.74% |
| 87 | -1.76% |
| 88 | -1.78% |
| … | … |
Balancing Adjustment
4.04% 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.