Hi, 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.
![](data:image/svg+xml;utf8,<svg width="300" height="300" viewBox="0 0 300 300" xmlns="http://www.w3.org/2000/svg"><rect id="bg" width="300" height="300" fill="rgb(46,196,145)" /><path d="m 150 605 Q 206 94 -305 150 Q 206 206 150 -305 Q 94 206 605 150 Q 94 94 150 605 z" fill="rgb(70,136,0)" /><path d="m 150 515 Q 296 4 -215 150 Q 296 296 150 -215 Q 4 296 515 150 Q 4 4 150 515 z" fill="rgb(185,119,255)" /><path d="m 150 176 Q 165 135 124 150 Q 165 165 150 124 Q 135 165 176 150 Q 135 135 150 176 z" fill="rgb(209,59,110)" /></svg>)
Southern Discoveries
Valid Reviews
202 Valid Reviews
The Southern Discoveries experience has a total of 202 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 202 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 64 |
|
32% |
| 9/10 | 59 |
|
29% |
| 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% |
86.58% Average
The raw data average (mean) for all the Southern Discoveries valid reviews is 86.58% and is based on 202 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 202 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
74.88%
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 |
|---|---|---|---|
| Chris Creed | 10/10 | 64 days | 100% |
| Hirash | 1/10 | 126 days | 40% |
| Kat | 1/10 | 217 days | 39% |
| Remy and Rebecca Mans | 6/10 | 2964 days | 2% |
| Jocelyn Booy | 9/10 | 2989 days | 2% |
| David Horley | 7/10 | 3003 days | 2% |
| Vallee Manon | 9/10 | 3036 days | 2% |
| Nanda Dyke | 9/10 | 3062 days | 2% |
| victor diego | 7/10 | 3080 days | 2% |
| Samuel Michalak | 10/10 | 3085 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3309 days | 2% |
| Benedikt Hang | 8/10 | 3316 days | 2% |
| Jorge Gonzoleis | 8/10 | 3319 days | 2% |
| Lauren Goebel | 10/10 | 3323 days | 2% |
| Rahel Baufeld | 8/10 | 3331 days | 2% |
| Peter Hodgson | 10/10 | 3357 days | 1% |
| doug fiddes | 10/10 | 3382 days | 1% |
| Dan Wilson | 7/10 | 3399 days | 1% |
| Corrie Medinea | 8/10 | 3407 days | 1% |
| Gracen Verheryden | 10/10 | 3410 days | 1% |
| Jennifer Hoyles | 10/10 | 3414 days | 1% |
| Lenka Korinkova | 7/10 | 3676 days | 1% |
| Rebecca Wharton | 9/10 | 3704 days | 1% |
| Andy Jobst | 8/10 | 3779 days | 1% |
| Rawiri johnston | 10/10 | 3962 days | 0% |
| Marek Heiurich | 7/10 | 4032 days | 0% |
| Matt Weston | 10/10 | 4037 days | 0% |
| Henrik Bours | 8/10 | 4038 days | 0% |
| Svenja Trubenbach | 9/10 | 4038 days | 0% |
| Sheila Galpin | 9/10 | 4052 days | 0% |
| Guillaume | 9/10 | 4063 days | 0% |
| Andreas Jung | 9/10 | 4078 days | 0% |
| Inga Memmen | 10/10 | 4080 days | 0% |
| Alacchi Moustier | 10/10 | 4095 days | 0% |
| Guy David | 9/10 | 4103 days | 0% |
| Michael Rohn | 8/10 | 4110 days | 0% |
| Rainer | 9/10 | 4394 days | 0% |
| Clarissa Hanck | 9/10 | 4394 days | 0% |
| Michael Heuer | 9/10 | 4396 days | 0% |
| Oram Salem | 6/10 | 4396 days | 0% |
| Lea Roser | 9/10 | 4405 days | 0% |
| Jitka Krejcova | 10/10 | 4405 days | 0% |
| Michal Sturma | 9/10 | 4405 days | 0% |
| Stientje van den Heuvel | 8/10 | 4405 days | 0% |
| Tom Somers | 9/10 | 4405 days | 0% |
| Brandon Wells | 8/10 | 4406 days | 0% |
| Tim Vennewold | 9/10 | 4406 days | 0% |
| Katharina | 8/10 | 4406 days | 0% |
| Lorna and Seb | 9/10 | 4422 days | 0% |
| Kristin Denny | 8/10 | 4429 days | 0% |
| Wendy Ward | 10/10 | 4435 days | 0% |
| Michal Maly | 9/10 | 4445 days | 0% |
| Michael Nolan | 10/10 | 4447 days | 0% |
| Hanneke P | 7/10 | 4478 days | 0% |
| Katharina Pape | 8/10 | 4507 days | 0% |
| Camille | 7/10 | 4514 days | 0% |
| Petr Stepanek | 10/10 | 4776 days | 0% |
| Larry Curtiss | 10/10 | 4781 days | 0% |
| nztintin | 10/10 | 4784 days | 0% |
| Marion Hassink | 7/10 | 4790 days | 0% |
| Stam | 6/10 | 4795 days | 0% |
| Ed & Katie Riches | 8/10 | 4796 days | 0% |
| Seth & Carla | 10/10 | 4798 days | 0% |
| Peter Putz | 10/10 | 4798 days | 0% |
| Tadej Ferjan | 10/10 | 4798 days | 0% |
| Nico Welagen | 10/10 | 4799 days | 0% |
| Alan Findlay | 9/10 | 4799 days | 0% |
| Andreas Kristiansen | 10/10 | 4807 days | 0% |
| Arnoldus Bergmans | 10/10 | 4879 days | 0% |
| Kai | 10/10 | 4881 days | 0% |
| Christoph | 9/10 | 4884 days | 0% |
| Jory Singer | 8/10 | 4890 days | 0% |
| Scott & Madeleine Bancroft | 9/10 | 4895 days | 0% |
| Kimberly St Louis | 10/10 | 5089 days | 0% |
| Lisa Milton | 10/10 | 5112 days | 0% |
| Rob O'Neill | 10/10 | 5121 days | 0% |
| Laura Thrower | 10/10 | 5124 days | 0% |
| Ofir Avimeir | 8/10 | 5128 days | 0% |
| Zachary Steinberg | 9/10 | 5129 days | 0% |
| Brian Jones | 9/10 | 5129 days | 0% |
| Sarah and Uli Glas | 9/10 | 5130 days | 0% |
| Boi Sagarra | 8/10 | 5133 days | 0% |
| John Tinus | 8/10 | 5134 days | 0% |
| Stefanie | 8/10 | 5135 days | 0% |
| Alex | 8/10 | 5137 days | 0% |
| Fredrik Thornell | 8/10 | 5140 days | 0% |
| Siggi Wick | 9/10 | 5141 days | 0% |
| Bruce & Elaine Chote | 10/10 | 5142 days | 0% |
| Estel la Prado | 9/10 | 5144 days | 0% |
| Jeff and Carey Brown | 10/10 | 5149 days | 0% |
| LandJ | 7/10 | 5150 days | 0% |
| Katie Mitchell | 9/10 | 5150 days | 0% |
| Galamez | 9/10 | 5157 days | 0% |
| Mr & Mrs Mackie | 9/10 | 5160 days | 0% |
| Thomas Reidinger | 6/10 | 5164 days | 0% |
| G Elliason | 9/10 | 5164 days | 0% |
| Van den Borne | 9/10 | 5164 days | 0% |
| Laura Hayes | 10/10 | 5165 days | 0% |
| Brian Lind | 7/10 | 5165 days | 0% |
| Chloe Finster | 10/10 | 5165 days | 0% |
| Jol Balder | 8/10 | 5166 days | 0% |
| Robert Haidt | 10/10 | 5171 days | 0% |
| VisualDelight | 10/10 | 5393 days | 0% |
| lindam | 10/10 | 5484 days | 0% |
| Martina Pankova | 9/10 | 5490 days | 0% |
| Neal | 10/10 | 5528 days | 0% |
| Bouwma | 8/10 | 5536 days | 0% |
| Mattias Thorm | 9/10 | 5537 days | 0% |
| Erik Hummelmose | 8/10 | 5539 days | 0% |
| Ian E | 10/10 | 5539 days | 0% |
| Kane Chain | 9/10 | 5560 days | 0% |
| johnma | 10/10 | 5594 days | 0% |
| ingeh | 8/10 | 5598 days | 0% |
| Jerry | 8/10 | 5605 days | 0% |
| Decuq | 10/10 | 5616 days | 0% |
| Carl and Angela Rapihana | 8/10 | 5628 days | 0% |
| Graham Butt | 10/10 | 5628 days | 0% |
| tessac | 9/10 | 5730 days | 0% |
| andriesk | 9/10 | 5731 days | 0% |
| nickm | 10/10 | 5804 days | 0% |
| Sofie | 10/10 | 5819 days | 0% |
| streneer | 10/10 | 5836 days | 0% |
| ElleGermany | 9/10 | 5837 days | 0% |
| JonK | 9/10 | 5837 days | 0% |
| NicolaW | 10/10 | 5841 days | 0% |
| DirkGermany | 10/10 | 5844 days | 0% |
| Bridget | 10/10 | 5853 days | 0% |
| Roy | 9/10 | 5853 days | 0% |
| HenizV | 9/10 | 5858 days | 0% |
| CraigB | 10/10 | 5861 days | 0% |
| familytravellers | 7/10 | 5861 days | 0% |
| Rissmann | 10/10 | 5865 days | 0% |
| Sara Hansson | 10/10 | 5866 days | 0% |
| Frank | 9/10 | 5866 days | 0% |
| KurtL | 8/10 | 5867 days | 0% |
| SteveW | 8/10 | 5868 days | 0% |
| Peter Bowen-Simpkins | 9/10 | 5869 days | 0% |
| Joel | 9/10 | 5869 days | 0% |
| Suzie Lechner | 10/10 | 5869 days | 0% |
| KathrinS | 9/10 | 5869 days | 0% |
| Debbie | 7/10 | 5872 days | 0% |
| Stolz | 9/10 | 5872 days | 0% |
| Ulli | 9/10 | 5873 days | 0% |
| Tatjane | 8/10 | 5880 days | 0% |
| Claudia | 8/10 | 5881 days | 0% |
| SimonR | 8/10 | 5883 days | 0% |
| SonjaG | 9/10 | 5883 days | 0% |
| Steve | 7/10 | 5883 days | 0% |
| AdelineC | 8/10 | 5884 days | 0% |
| RobC1 | 7/10 | 5884 days | 0% |
| RichardB1 | 6/10 | 5884 days | 0% |
| JoT | 7/10 | 5884 days | 0% |
| Olly | 10/10 | 5885 days | 0% |
| Klaus | 9/10 | 5885 days | 0% |
| JanetH | 8/10 | 5897 days | 0% |
| StefanieW | 8/10 | 5899 days | 0% |
| schenk | 8/10 | 5899 days | 0% |
| groenewold | 7/10 | 5913 days | 0% |
| Jessy | 5/10 | 5913 days | 0% |
| Wilco | 7/10 | 5921 days | 0% |
| Bernd | 8/10 | 5922 days | 0% |
| Ruben | 8/10 | 5922 days | 0% |
| Paul | 10/10 | 5925 days | 0% |
| Loren | 10/10 | 5953 days | 0% |
| DavidO | 8/10 | 5956 days | 0% |
| Peter | 9/10 | 5961 days | 0% |
| David | 10/10 | 5962 days | 0% |
| Kylie | 8/10 | 5966 days | 0% |
| Ursula | 9/10 | 5979 days | 0% |
| Carrie | 8/10 | 5995 days | 0% |
| David | 10/10 | 6026 days | 0% |
| Howard | 9/10 | 6044 days | 0% |
| Chris | 8/10 | 6226 days | 0% |
| Anthony | 8/10 | 6229 days | 0% |
| Sandra Verbaarschot | 10/10 | 6229 days | 0% |
| Omer Harron | 10/10 | 6229 days | 0% |
| angela | 9/10 | 6232 days | 0% |
| Kerstin Brantryd | 5/10 | 6236 days | 0% |
| Sanne | 10/10 | 6242 days | 0% |
| Tessa McCormick | 9/10 | 6246 days | 0% |
| Sally and David Wallis | 10/10 | 6249 days | 0% |
| Martens | 8/10 | 6250 days | 0% |
| Dan Adamson | 9/10 | 6268 days | 0% |
| Ben | 7/10 | 6334 days | 0% |
| Kirsty Ranger | 9/10 | 6409 days | 0% |
| Andy Chapman | 8/10 | 6451 days | 0% |
| ranker_34 | 5/10 | 6451 days | 0% |
| Jo | 9/10 | 6451 days | 0% |
| Matous | 10/10 | 6570 days | 0% |
| Stefan&Gerte | 7/10 | 6573 days | 0% |
| Jenny | 9/10 | 6573 days | 0% |
| Paul Yacoumis | 8/10 | 6577 days | 0% |
| Deloraine | 7/10 | 6586 days | 0% |
| Denise Nick | 9/10 | 6588 days | 0% |
| Daniel | 10/10 | 6593 days | 0% |
| Martin Smith | 8/10 | 6596 days | 0% |
| Susan | 8/10 | 6599 days | 0% |
| sebastian | 10/10 | 6600 days | 0% |
| ranker_110 | 9/10 | 6607 days | 0% |
| Stefan | 8/10 | 6609 days | 0% |
| Svenja | 7/10 | 6614 days | 0% |
| Hirsh | 10/10 | 6619 days | 0% |
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
-0.91% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 61 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 50 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 47 | -0.86% |
| 48 | -0.87% |
| 49 | -0.89% |
| 50 | -0.91% |
| 51 | -0.93% |
| 52 | -0.95% |
| 53 | -0.97% |
| … | … |
Balancing Adjustment
5.06% 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.