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
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
79.02%
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 | 232 days | 100% |
| Chris Creed | 10/10 | 444 days | 92% |
| Hirash | 1/10 | 506 days | 36% |
| Kat | 1/10 | 597 days | 34% |
| Remy and Rebecca Mans | 6/10 | 3344 days | 2% |
| Jocelyn Booy | 9/10 | 3369 days | 2% |
| David Horley | 7/10 | 3383 days | 2% |
| Vallee Manon | 9/10 | 3416 days | 2% |
| Nanda Dyke | 9/10 | 3442 days | 2% |
| victor diego | 7/10 | 3460 days | 2% |
| Samuel Michalak | 10/10 | 3465 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3689 days | 1% |
| Benedikt Hang | 8/10 | 3696 days | 1% |
| Jorge Gonzoleis | 8/10 | 3699 days | 1% |
| Lauren Goebel | 10/10 | 3703 days | 1% |
| Rahel Baufeld | 8/10 | 3711 days | 1% |
| Peter Hodgson | 10/10 | 3737 days | 1% |
| doug fiddes | 10/10 | 3762 days | 1% |
| Dan Wilson | 7/10 | 3779 days | 1% |
| Corrie Medinea | 8/10 | 3787 days | 1% |
| Gracen Verheryden | 10/10 | 3790 days | 1% |
| Jennifer Hoyles | 10/10 | 3794 days | 1% |
| Lenka Korinkova | 7/10 | 4056 days | 1% |
| Rebecca Wharton | 9/10 | 4084 days | 1% |
| Andy Jobst | 8/10 | 4159 days | 0% |
| Rawiri johnston | 10/10 | 4342 days | 0% |
| Marek Heiurich | 7/10 | 4412 days | 1% |
| Matt Weston | 10/10 | 4417 days | 1% |
| Henrik Bours | 8/10 | 4418 days | 1% |
| Svenja Trubenbach | 9/10 | 4418 days | 1% |
| Sheila Galpin | 9/10 | 4432 days | 1% |
| Guillaume | 9/10 | 4443 days | 1% |
| Andreas Jung | 9/10 | 4458 days | 1% |
| Inga Memmen | 10/10 | 4460 days | 1% |
| Alacchi Moustier | 10/10 | 4475 days | 1% |
| Guy David | 9/10 | 4483 days | 1% |
| Michael Rohn | 8/10 | 4490 days | 1% |
| Rainer | 9/10 | 4774 days | 1% |
| Clarissa Hanck | 9/10 | 4774 days | 1% |
| Michael Heuer | 9/10 | 4776 days | 1% |
| Oram Salem | 6/10 | 4776 days | 1% |
| Lea Roser | 9/10 | 4785 days | 1% |
| Jitka Krejcova | 10/10 | 4785 days | 1% |
| Michal Sturma | 9/10 | 4785 days | 1% |
| Stientje van den Heuvel | 8/10 | 4785 days | 1% |
| Tom Somers | 9/10 | 4785 days | 1% |
| Brandon Wells | 8/10 | 4786 days | 1% |
| Tim Vennewold | 9/10 | 4786 days | 1% |
| Katharina | 8/10 | 4786 days | 1% |
| Lorna and Seb | 9/10 | 4802 days | 1% |
| Kristin Denny | 8/10 | 4809 days | 1% |
| Wendy Ward | 10/10 | 4815 days | 1% |
| Michal Maly | 9/10 | 4825 days | 1% |
| Michael Nolan | 10/10 | 4827 days | 1% |
| Hanneke P | 7/10 | 4858 days | 1% |
| Katharina Pape | 8/10 | 4887 days | 1% |
| Camille | 7/10 | 4894 days | 1% |
| Petr Stepanek | 10/10 | 5156 days | 1% |
| Larry Curtiss | 10/10 | 5161 days | 1% |
| nztintin | 10/10 | 5164 days | 1% |
| Marion Hassink | 7/10 | 5170 days | 1% |
| Stam | 6/10 | 5175 days | 1% |
| Ed & Katie Riches | 8/10 | 5176 days | 1% |
| Seth & Carla | 10/10 | 5178 days | 1% |
| Peter Putz | 10/10 | 5178 days | 1% |
| Tadej Ferjan | 10/10 | 5178 days | 1% |
| Nico Welagen | 10/10 | 5179 days | 1% |
| Alan Findlay | 9/10 | 5179 days | 1% |
| Andreas Kristiansen | 10/10 | 5187 days | 1% |
| Arnoldus Bergmans | 10/10 | 5259 days | 1% |
| Kai | 10/10 | 5261 days | 1% |
| Christoph | 9/10 | 5264 days | 1% |
| Jory Singer | 8/10 | 5270 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5275 days | 1% |
| Kimberly St Louis | 10/10 | 5469 days | 1% |
| Lisa Milton | 10/10 | 5492 days | 1% |
| Rob O'Neill | 10/10 | 5501 days | 1% |
| Laura Thrower | 10/10 | 5504 days | 1% |
| Ofir Avimeir | 8/10 | 5508 days | 1% |
| Zachary Steinberg | 9/10 | 5509 days | 1% |
| Brian Jones | 9/10 | 5509 days | 1% |
| Sarah and Uli Glas | 9/10 | 5510 days | 1% |
| Boi Sagarra | 8/10 | 5513 days | 1% |
| John Tinus | 8/10 | 5514 days | 1% |
| Stefanie | 8/10 | 5515 days | 1% |
| Alex | 8/10 | 5517 days | 1% |
| Fredrik Thornell | 8/10 | 5520 days | 1% |
| Siggi Wick | 9/10 | 5521 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5522 days | 1% |
| Estel la Prado | 9/10 | 5524 days | 1% |
| Jeff and Carey Brown | 10/10 | 5529 days | 1% |
| LandJ | 7/10 | 5530 days | 1% |
| Katie Mitchell | 9/10 | 5530 days | 1% |
| Galamez | 9/10 | 5537 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5540 days | 1% |
| Thomas Reidinger | 6/10 | 5544 days | 1% |
| G Elliason | 9/10 | 5544 days | 1% |
| Van den Borne | 9/10 | 5544 days | 1% |
| Laura Hayes | 10/10 | 5545 days | 1% |
| Brian Lind | 7/10 | 5545 days | 1% |
| Chloe Finster | 10/10 | 5545 days | 1% |
| Jol Balder | 8/10 | 5546 days | 1% |
| Robert Haidt | 10/10 | 5551 days | 1% |
| VisualDelight | 10/10 | 5773 days | 1% |
| lindam | 10/10 | 5864 days | 1% |
| Martina Pankova | 9/10 | 5870 days | 1% |
| Neal | 10/10 | 5908 days | 1% |
| Bouwma | 8/10 | 5916 days | 1% |
| Mattias Thorm | 9/10 | 5917 days | 1% |
| Erik Hummelmose | 8/10 | 5919 days | 1% |
| Ian E | 10/10 | 5919 days | 1% |
| Kane Chain | 9/10 | 5940 days | 1% |
| johnma | 10/10 | 5974 days | 1% |
| ingeh | 8/10 | 5978 days | 1% |
| Jerry | 8/10 | 5985 days | 1% |
| Decuq | 10/10 | 5996 days | 1% |
| Carl and Angela Rapihana | 8/10 | 6008 days | 1% |
| Graham Butt | 10/10 | 6008 days | 1% |
| tessac | 9/10 | 6110 days | 1% |
| andriesk | 9/10 | 6111 days | 1% |
| nickm | 10/10 | 6184 days | 1% |
| Sofie | 10/10 | 6199 days | 1% |
| streneer | 10/10 | 6216 days | 1% |
| ElleGermany | 9/10 | 6217 days | 1% |
| JonK | 9/10 | 6217 days | 1% |
| NicolaW | 10/10 | 6221 days | 1% |
| DirkGermany | 10/10 | 6224 days | 1% |
| Bridget | 10/10 | 6233 days | 1% |
| Roy | 9/10 | 6233 days | 1% |
| HenizV | 9/10 | 6238 days | 1% |
| CraigB | 10/10 | 6241 days | 1% |
| familytravellers | 7/10 | 6241 days | 1% |
| Rissmann | 10/10 | 6245 days | 1% |
| Sara Hansson | 10/10 | 6246 days | 1% |
| Frank | 9/10 | 6246 days | 1% |
| KurtL | 8/10 | 6247 days | 1% |
| SteveW | 8/10 | 6248 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6249 days | 1% |
| Joel | 9/10 | 6249 days | 1% |
| Suzie Lechner | 10/10 | 6249 days | 1% |
| KathrinS | 9/10 | 6249 days | 1% |
| Debbie | 7/10 | 6252 days | 1% |
| Stolz | 9/10 | 6252 days | 1% |
| Ulli | 9/10 | 6253 days | 1% |
| Tatjane | 8/10 | 6260 days | 1% |
| Claudia | 8/10 | 6261 days | 1% |
| SimonR | 8/10 | 6263 days | 1% |
| SonjaG | 9/10 | 6263 days | 1% |
| Steve | 7/10 | 6263 days | 1% |
| AdelineC | 8/10 | 6264 days | 1% |
| RobC1 | 7/10 | 6264 days | 1% |
| RichardB1 | 6/10 | 6264 days | 1% |
| JoT | 7/10 | 6264 days | 1% |
| Olly | 10/10 | 6265 days | 1% |
| Klaus | 9/10 | 6265 days | 1% |
| JanetH | 8/10 | 6277 days | 1% |
| StefanieW | 8/10 | 6279 days | 1% |
| schenk | 8/10 | 6279 days | 1% |
| groenewold | 7/10 | 6293 days | 1% |
| Jessy | 5/10 | 6293 days | 1% |
| Wilco | 7/10 | 6301 days | 1% |
| Bernd | 8/10 | 6302 days | 1% |
| Ruben | 8/10 | 6302 days | 1% |
| Paul | 10/10 | 6305 days | 1% |
| Loren | 10/10 | 6333 days | 1% |
| DavidO | 8/10 | 6336 days | 1% |
| Peter | 9/10 | 6341 days | 1% |
| David | 10/10 | 6342 days | 1% |
| Kylie | 8/10 | 6346 days | 1% |
| Ursula | 9/10 | 6359 days | 1% |
| Carrie | 8/10 | 6375 days | 1% |
| David | 10/10 | 6406 days | 1% |
| Howard | 9/10 | 6424 days | 1% |
| Chris | 8/10 | 6606 days | 1% |
| Anthony | 8/10 | 6609 days | 1% |
| Sandra Verbaarschot | 10/10 | 6609 days | 1% |
| Omer Harron | 10/10 | 6609 days | 1% |
| angela | 9/10 | 6612 days | 1% |
| Kerstin Brantryd | 5/10 | 6616 days | 1% |
| Sanne | 10/10 | 6622 days | 1% |
| Tessa McCormick | 9/10 | 6626 days | 1% |
| Sally and David Wallis | 10/10 | 6629 days | 1% |
| Martens | 8/10 | 6630 days | 1% |
| Dan Adamson | 9/10 | 6648 days | 1% |
| Ben | 7/10 | 6714 days | 1% |
| Kirsty Ranger | 9/10 | 6789 days | 1% |
| Andy Chapman | 8/10 | 6831 days | 1% |
| ranker_34 | 5/10 | 6831 days | 1% |
| Jo | 9/10 | 6831 days | 1% |
| Matous | 10/10 | 6950 days | 1% |
| Stefan&Gerte | 7/10 | 6953 days | 1% |
| Jenny | 9/10 | 6953 days | 1% |
| Paul Yacoumis | 8/10 | 6957 days | 1% |
| Deloraine | 7/10 | 6966 days | 1% |
| Denise Nick | 9/10 | 6968 days | 1% |
| Daniel | 10/10 | 6973 days | 1% |
| Martin Smith | 8/10 | 6976 days | 1% |
| Susan | 8/10 | 6979 days | 1% |
| sebastian | 10/10 | 6980 days | 1% |
| ranker_110 | 9/10 | 6987 days | 1% |
| Stefan | 8/10 | 6989 days | 1% |
| Svenja | 7/10 | 6994 days | 1% |
| Hirsh | 10/10 | 6999 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
-3.34% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 70 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 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -3.29% |
| 198 | -3.30% |
| 199 | -3.32% |
| 200 | -3.34% |
| 201 | -3.35% |
| 202 | -3.37% |
| 203 | -3.39% |
| … | … |
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.