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 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
78.70%
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 | 170 days | 100% |
| Chris Creed | 10/10 | 383 days | 94% |
| Hirash | 1/10 | 445 days | 37% |
| Kat | 1/10 | 535 days | 35% |
| Remy and Rebecca Mans | 6/10 | 3283 days | 2% |
| Jocelyn Booy | 9/10 | 3308 days | 2% |
| David Horley | 7/10 | 3322 days | 2% |
| Vallee Manon | 9/10 | 3355 days | 2% |
| Nanda Dyke | 9/10 | 3381 days | 2% |
| victor diego | 7/10 | 3399 days | 2% |
| Samuel Michalak | 10/10 | 3404 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3628 days | 1% |
| Benedikt Hang | 8/10 | 3635 days | 1% |
| Jorge Gonzoleis | 8/10 | 3638 days | 1% |
| Lauren Goebel | 10/10 | 3642 days | 1% |
| Rahel Baufeld | 8/10 | 3650 days | 1% |
| Peter Hodgson | 10/10 | 3676 days | 1% |
| doug fiddes | 10/10 | 3701 days | 1% |
| Dan Wilson | 7/10 | 3718 days | 1% |
| Corrie Medinea | 8/10 | 3726 days | 1% |
| Gracen Verheryden | 10/10 | 3729 days | 1% |
| Jennifer Hoyles | 10/10 | 3733 days | 1% |
| Lenka Korinkova | 7/10 | 3995 days | 1% |
| Rebecca Wharton | 9/10 | 4023 days | 1% |
| Andy Jobst | 8/10 | 4098 days | 1% |
| Rawiri johnston | 10/10 | 4280 days | 0% |
| Marek Heiurich | 7/10 | 4351 days | 0% |
| Matt Weston | 10/10 | 4356 days | 0% |
| Henrik Bours | 8/10 | 4357 days | 0% |
| Svenja Trubenbach | 9/10 | 4357 days | 0% |
| Sheila Galpin | 9/10 | 4371 days | 0% |
| Guillaume | 9/10 | 4382 days | 1% |
| Andreas Jung | 9/10 | 4397 days | 1% |
| Inga Memmen | 10/10 | 4399 days | 1% |
| Alacchi Moustier | 10/10 | 4414 days | 1% |
| Guy David | 9/10 | 4422 days | 1% |
| Michael Rohn | 8/10 | 4429 days | 1% |
| Rainer | 9/10 | 4713 days | 1% |
| Clarissa Hanck | 9/10 | 4713 days | 1% |
| Michael Heuer | 9/10 | 4715 days | 1% |
| Oram Salem | 6/10 | 4715 days | 1% |
| Lea Roser | 9/10 | 4724 days | 1% |
| Jitka Krejcova | 10/10 | 4724 days | 1% |
| Michal Sturma | 9/10 | 4724 days | 1% |
| Stientje van den Heuvel | 8/10 | 4724 days | 1% |
| Tom Somers | 9/10 | 4724 days | 1% |
| Brandon Wells | 8/10 | 4725 days | 1% |
| Tim Vennewold | 9/10 | 4725 days | 1% |
| Katharina | 8/10 | 4725 days | 1% |
| Lorna and Seb | 9/10 | 4741 days | 1% |
| Kristin Denny | 8/10 | 4748 days | 1% |
| Wendy Ward | 10/10 | 4754 days | 1% |
| Michal Maly | 9/10 | 4764 days | 1% |
| Michael Nolan | 10/10 | 4766 days | 1% |
| Hanneke P | 7/10 | 4797 days | 1% |
| Katharina Pape | 8/10 | 4826 days | 1% |
| Camille | 7/10 | 4833 days | 1% |
| Petr Stepanek | 10/10 | 5095 days | 1% |
| Larry Curtiss | 10/10 | 5100 days | 1% |
| nztintin | 10/10 | 5103 days | 1% |
| Marion Hassink | 7/10 | 5109 days | 1% |
| Stam | 6/10 | 5114 days | 1% |
| Ed & Katie Riches | 8/10 | 5115 days | 1% |
| Seth & Carla | 10/10 | 5117 days | 1% |
| Peter Putz | 10/10 | 5117 days | 1% |
| Tadej Ferjan | 10/10 | 5117 days | 1% |
| Nico Welagen | 10/10 | 5118 days | 1% |
| Alan Findlay | 9/10 | 5118 days | 1% |
| Andreas Kristiansen | 10/10 | 5126 days | 1% |
| Arnoldus Bergmans | 10/10 | 5198 days | 1% |
| Kai | 10/10 | 5200 days | 1% |
| Christoph | 9/10 | 5203 days | 1% |
| Jory Singer | 8/10 | 5209 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5214 days | 1% |
| Kimberly St Louis | 10/10 | 5407 days | 1% |
| Lisa Milton | 10/10 | 5430 days | 1% |
| Rob O'Neill | 10/10 | 5440 days | 1% |
| Laura Thrower | 10/10 | 5443 days | 1% |
| Ofir Avimeir | 8/10 | 5447 days | 1% |
| Zachary Steinberg | 9/10 | 5448 days | 1% |
| Brian Jones | 9/10 | 5448 days | 1% |
| Sarah and Uli Glas | 9/10 | 5449 days | 1% |
| Boi Sagarra | 8/10 | 5452 days | 1% |
| John Tinus | 8/10 | 5453 days | 1% |
| Stefanie | 8/10 | 5454 days | 1% |
| Alex | 8/10 | 5456 days | 1% |
| Fredrik Thornell | 8/10 | 5459 days | 1% |
| Siggi Wick | 9/10 | 5460 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5461 days | 1% |
| Estel la Prado | 9/10 | 5463 days | 1% |
| Jeff and Carey Brown | 10/10 | 5468 days | 1% |
| LandJ | 7/10 | 5469 days | 1% |
| Katie Mitchell | 9/10 | 5469 days | 1% |
| Galamez | 9/10 | 5476 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5479 days | 1% |
| Thomas Reidinger | 6/10 | 5483 days | 1% |
| G Elliason | 9/10 | 5483 days | 1% |
| Van den Borne | 9/10 | 5483 days | 1% |
| Laura Hayes | 10/10 | 5484 days | 1% |
| Brian Lind | 7/10 | 5484 days | 1% |
| Chloe Finster | 10/10 | 5484 days | 1% |
| Jol Balder | 8/10 | 5485 days | 1% |
| Robert Haidt | 10/10 | 5490 days | 1% |
| VisualDelight | 10/10 | 5711 days | 1% |
| lindam | 10/10 | 5803 days | 1% |
| Martina Pankova | 9/10 | 5809 days | 1% |
| Neal | 10/10 | 5847 days | 1% |
| Bouwma | 8/10 | 5855 days | 1% |
| Mattias Thorm | 9/10 | 5856 days | 1% |
| Erik Hummelmose | 8/10 | 5858 days | 1% |
| Ian E | 10/10 | 5858 days | 1% |
| Kane Chain | 9/10 | 5879 days | 1% |
| johnma | 10/10 | 5913 days | 1% |
| ingeh | 8/10 | 5917 days | 1% |
| Jerry | 8/10 | 5924 days | 1% |
| Decuq | 10/10 | 5935 days | 1% |
| Carl and Angela Rapihana | 8/10 | 5947 days | 1% |
| Graham Butt | 10/10 | 5947 days | 1% |
| tessac | 9/10 | 6048 days | 1% |
| andriesk | 9/10 | 6049 days | 1% |
| nickm | 10/10 | 6122 days | 1% |
| Sofie | 10/10 | 6137 days | 1% |
| streneer | 10/10 | 6154 days | 1% |
| ElleGermany | 9/10 | 6155 days | 1% |
| JonK | 9/10 | 6155 days | 1% |
| NicolaW | 10/10 | 6159 days | 1% |
| DirkGermany | 10/10 | 6162 days | 1% |
| Bridget | 10/10 | 6172 days | 1% |
| Roy | 9/10 | 6172 days | 1% |
| HenizV | 9/10 | 6177 days | 1% |
| CraigB | 10/10 | 6180 days | 1% |
| familytravellers | 7/10 | 6180 days | 1% |
| Rissmann | 10/10 | 6184 days | 1% |
| Sara Hansson | 10/10 | 6185 days | 1% |
| Frank | 9/10 | 6185 days | 1% |
| KurtL | 8/10 | 6186 days | 1% |
| SteveW | 8/10 | 6187 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6188 days | 1% |
| Joel | 9/10 | 6188 days | 1% |
| Suzie Lechner | 10/10 | 6188 days | 1% |
| KathrinS | 9/10 | 6188 days | 1% |
| Debbie | 7/10 | 6191 days | 1% |
| Stolz | 9/10 | 6191 days | 1% |
| Ulli | 9/10 | 6192 days | 1% |
| Tatjane | 8/10 | 6199 days | 1% |
| Claudia | 8/10 | 6200 days | 1% |
| SimonR | 8/10 | 6202 days | 1% |
| SonjaG | 9/10 | 6202 days | 1% |
| Steve | 7/10 | 6202 days | 1% |
| AdelineC | 8/10 | 6203 days | 1% |
| RobC1 | 7/10 | 6203 days | 1% |
| RichardB1 | 6/10 | 6203 days | 1% |
| JoT | 7/10 | 6203 days | 1% |
| Olly | 10/10 | 6204 days | 1% |
| Klaus | 9/10 | 6204 days | 1% |
| JanetH | 8/10 | 6216 days | 1% |
| StefanieW | 8/10 | 6218 days | 1% |
| schenk | 8/10 | 6218 days | 1% |
| groenewold | 7/10 | 6232 days | 1% |
| Jessy | 5/10 | 6232 days | 1% |
| Wilco | 7/10 | 6240 days | 1% |
| Bernd | 8/10 | 6241 days | 1% |
| Ruben | 8/10 | 6241 days | 1% |
| Paul | 10/10 | 6244 days | 1% |
| Loren | 10/10 | 6272 days | 1% |
| DavidO | 8/10 | 6275 days | 1% |
| Peter | 9/10 | 6280 days | 1% |
| David | 10/10 | 6281 days | 1% |
| Kylie | 8/10 | 6285 days | 1% |
| Ursula | 9/10 | 6298 days | 1% |
| Carrie | 8/10 | 6314 days | 1% |
| David | 10/10 | 6345 days | 1% |
| Howard | 9/10 | 6363 days | 1% |
| Chris | 8/10 | 6545 days | 1% |
| Anthony | 8/10 | 6548 days | 1% |
| Sandra Verbaarschot | 10/10 | 6548 days | 1% |
| Omer Harron | 10/10 | 6548 days | 1% |
| angela | 9/10 | 6551 days | 1% |
| Kerstin Brantryd | 5/10 | 6555 days | 1% |
| Sanne | 10/10 | 6561 days | 1% |
| Tessa McCormick | 9/10 | 6565 days | 1% |
| Sally and David Wallis | 10/10 | 6568 days | 1% |
| Martens | 8/10 | 6569 days | 1% |
| Dan Adamson | 9/10 | 6587 days | 1% |
| Ben | 7/10 | 6653 days | 1% |
| Kirsty Ranger | 9/10 | 6727 days | 1% |
| Andy Chapman | 8/10 | 6769 days | 1% |
| ranker_34 | 5/10 | 6769 days | 1% |
| Jo | 9/10 | 6769 days | 1% |
| Matous | 10/10 | 6888 days | 1% |
| Stefan&Gerte | 7/10 | 6891 days | 1% |
| Jenny | 9/10 | 6891 days | 1% |
| Paul Yacoumis | 8/10 | 6895 days | 1% |
| Deloraine | 7/10 | 6904 days | 1% |
| Denise Nick | 9/10 | 6906 days | 1% |
| Daniel | 10/10 | 6911 days | 1% |
| Martin Smith | 8/10 | 6915 days | 1% |
| Susan | 8/10 | 6918 days | 1% |
| sebastian | 10/10 | 6919 days | 1% |
| ranker_110 | 9/10 | 6926 days | 1% |
| Stefan | 8/10 | 6928 days | 1% |
| Svenja | 7/10 | 6933 days | 1% |
| Hirsh | 10/10 | 6938 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
-3.05% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 53 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 147 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 144 | -2.99% |
| 145 | -3.01% |
| 146 | -3.03% |
| 147 | -3.05% |
| 148 | -3.07% |
| 149 | -3.09% |
| 150 | -3.11% |
| … | … |
Balancing Adjustment
4.39% 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.