Kia ora, 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
78.93%
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 | 211 days | 100% |
| Chris Creed | 10/10 | 424 days | 93% |
| Hirash | 1/10 | 486 days | 36% |
| Kat | 1/10 | 576 days | 34% |
| Remy and Rebecca Mans | 6/10 | 3324 days | 2% |
| Jocelyn Booy | 9/10 | 3349 days | 2% |
| David Horley | 7/10 | 3363 days | 2% |
| Vallee Manon | 9/10 | 3396 days | 2% |
| Nanda Dyke | 9/10 | 3422 days | 2% |
| victor diego | 7/10 | 3440 days | 2% |
| Samuel Michalak | 10/10 | 3445 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3669 days | 1% |
| Benedikt Hang | 8/10 | 3676 days | 1% |
| Jorge Gonzoleis | 8/10 | 3679 days | 1% |
| Lauren Goebel | 10/10 | 3683 days | 1% |
| Rahel Baufeld | 8/10 | 3691 days | 1% |
| Peter Hodgson | 10/10 | 3717 days | 1% |
| doug fiddes | 10/10 | 3742 days | 1% |
| Dan Wilson | 7/10 | 3759 days | 1% |
| Corrie Medinea | 8/10 | 3767 days | 1% |
| Gracen Verheryden | 10/10 | 3770 days | 1% |
| Jennifer Hoyles | 10/10 | 3774 days | 1% |
| Lenka Korinkova | 7/10 | 4036 days | 1% |
| Rebecca Wharton | 9/10 | 4064 days | 1% |
| Andy Jobst | 8/10 | 4139 days | 0% |
| Rawiri johnston | 10/10 | 4321 days | 0% |
| Marek Heiurich | 7/10 | 4392 days | 1% |
| Matt Weston | 10/10 | 4397 days | 1% |
| Henrik Bours | 8/10 | 4398 days | 1% |
| Svenja Trubenbach | 9/10 | 4398 days | 1% |
| Sheila Galpin | 9/10 | 4412 days | 1% |
| Guillaume | 9/10 | 4423 days | 1% |
| Andreas Jung | 9/10 | 4438 days | 1% |
| Inga Memmen | 10/10 | 4440 days | 1% |
| Alacchi Moustier | 10/10 | 4455 days | 1% |
| Guy David | 9/10 | 4463 days | 1% |
| Michael Rohn | 8/10 | 4470 days | 1% |
| Rainer | 9/10 | 4754 days | 1% |
| Clarissa Hanck | 9/10 | 4754 days | 1% |
| Michael Heuer | 9/10 | 4756 days | 1% |
| Oram Salem | 6/10 | 4756 days | 1% |
| Lea Roser | 9/10 | 4765 days | 1% |
| Jitka Krejcova | 10/10 | 4765 days | 1% |
| Michal Sturma | 9/10 | 4765 days | 1% |
| Stientje van den Heuvel | 8/10 | 4765 days | 1% |
| Tom Somers | 9/10 | 4765 days | 1% |
| Brandon Wells | 8/10 | 4766 days | 1% |
| Tim Vennewold | 9/10 | 4766 days | 1% |
| Katharina | 8/10 | 4766 days | 1% |
| Lorna and Seb | 9/10 | 4782 days | 1% |
| Kristin Denny | 8/10 | 4789 days | 1% |
| Wendy Ward | 10/10 | 4795 days | 1% |
| Michal Maly | 9/10 | 4805 days | 1% |
| Michael Nolan | 10/10 | 4807 days | 1% |
| Hanneke P | 7/10 | 4838 days | 1% |
| Katharina Pape | 8/10 | 4867 days | 1% |
| Camille | 7/10 | 4874 days | 1% |
| Petr Stepanek | 10/10 | 5136 days | 1% |
| Larry Curtiss | 10/10 | 5141 days | 1% |
| nztintin | 10/10 | 5144 days | 1% |
| Marion Hassink | 7/10 | 5150 days | 1% |
| Stam | 6/10 | 5155 days | 1% |
| Ed & Katie Riches | 8/10 | 5156 days | 1% |
| Seth & Carla | 10/10 | 5158 days | 1% |
| Peter Putz | 10/10 | 5158 days | 1% |
| Tadej Ferjan | 10/10 | 5158 days | 1% |
| Nico Welagen | 10/10 | 5159 days | 1% |
| Alan Findlay | 9/10 | 5159 days | 1% |
| Andreas Kristiansen | 10/10 | 5167 days | 1% |
| Arnoldus Bergmans | 10/10 | 5239 days | 1% |
| Kai | 10/10 | 5241 days | 1% |
| Christoph | 9/10 | 5244 days | 1% |
| Jory Singer | 8/10 | 5250 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5255 days | 1% |
| Kimberly St Louis | 10/10 | 5448 days | 1% |
| Lisa Milton | 10/10 | 5471 days | 1% |
| Rob O'Neill | 10/10 | 5481 days | 1% |
| Laura Thrower | 10/10 | 5484 days | 1% |
| Ofir Avimeir | 8/10 | 5488 days | 1% |
| Zachary Steinberg | 9/10 | 5489 days | 1% |
| Brian Jones | 9/10 | 5489 days | 1% |
| Sarah and Uli Glas | 9/10 | 5490 days | 1% |
| Boi Sagarra | 8/10 | 5493 days | 1% |
| John Tinus | 8/10 | 5494 days | 1% |
| Stefanie | 8/10 | 5495 days | 1% |
| Alex | 8/10 | 5497 days | 1% |
| Fredrik Thornell | 8/10 | 5500 days | 1% |
| Siggi Wick | 9/10 | 5501 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5502 days | 1% |
| Estel la Prado | 9/10 | 5504 days | 1% |
| Jeff and Carey Brown | 10/10 | 5509 days | 1% |
| LandJ | 7/10 | 5510 days | 1% |
| Katie Mitchell | 9/10 | 5510 days | 1% |
| Galamez | 9/10 | 5517 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5520 days | 1% |
| Thomas Reidinger | 6/10 | 5524 days | 1% |
| G Elliason | 9/10 | 5524 days | 1% |
| Van den Borne | 9/10 | 5524 days | 1% |
| Laura Hayes | 10/10 | 5525 days | 1% |
| Brian Lind | 7/10 | 5525 days | 1% |
| Chloe Finster | 10/10 | 5525 days | 1% |
| Jol Balder | 8/10 | 5526 days | 1% |
| Robert Haidt | 10/10 | 5531 days | 1% |
| VisualDelight | 10/10 | 5752 days | 1% |
| lindam | 10/10 | 5844 days | 1% |
| Martina Pankova | 9/10 | 5850 days | 1% |
| Neal | 10/10 | 5888 days | 1% |
| Bouwma | 8/10 | 5896 days | 1% |
| Mattias Thorm | 9/10 | 5897 days | 1% |
| Erik Hummelmose | 8/10 | 5899 days | 1% |
| Ian E | 10/10 | 5899 days | 1% |
| Kane Chain | 9/10 | 5920 days | 1% |
| johnma | 10/10 | 5954 days | 1% |
| ingeh | 8/10 | 5958 days | 1% |
| Jerry | 8/10 | 5965 days | 1% |
| Decuq | 10/10 | 5976 days | 1% |
| Carl and Angela Rapihana | 8/10 | 5988 days | 1% |
| Graham Butt | 10/10 | 5988 days | 1% |
| tessac | 9/10 | 6089 days | 1% |
| andriesk | 9/10 | 6090 days | 1% |
| nickm | 10/10 | 6163 days | 1% |
| Sofie | 10/10 | 6178 days | 1% |
| streneer | 10/10 | 6195 days | 1% |
| ElleGermany | 9/10 | 6196 days | 1% |
| JonK | 9/10 | 6196 days | 1% |
| NicolaW | 10/10 | 6200 days | 1% |
| DirkGermany | 10/10 | 6203 days | 1% |
| Bridget | 10/10 | 6213 days | 1% |
| Roy | 9/10 | 6213 days | 1% |
| HenizV | 9/10 | 6218 days | 1% |
| CraigB | 10/10 | 6221 days | 1% |
| familytravellers | 7/10 | 6221 days | 1% |
| Rissmann | 10/10 | 6225 days | 1% |
| Sara Hansson | 10/10 | 6226 days | 1% |
| Frank | 9/10 | 6226 days | 1% |
| KurtL | 8/10 | 6227 days | 1% |
| SteveW | 8/10 | 6228 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6229 days | 1% |
| Joel | 9/10 | 6229 days | 1% |
| Suzie Lechner | 10/10 | 6229 days | 1% |
| KathrinS | 9/10 | 6229 days | 1% |
| Debbie | 7/10 | 6232 days | 1% |
| Stolz | 9/10 | 6232 days | 1% |
| Ulli | 9/10 | 6233 days | 1% |
| Tatjane | 8/10 | 6240 days | 1% |
| Claudia | 8/10 | 6241 days | 1% |
| SimonR | 8/10 | 6243 days | 1% |
| SonjaG | 9/10 | 6243 days | 1% |
| Steve | 7/10 | 6243 days | 1% |
| AdelineC | 8/10 | 6244 days | 1% |
| RobC1 | 7/10 | 6244 days | 1% |
| RichardB1 | 6/10 | 6244 days | 1% |
| JoT | 7/10 | 6244 days | 1% |
| Olly | 10/10 | 6245 days | 1% |
| Klaus | 9/10 | 6245 days | 1% |
| JanetH | 8/10 | 6257 days | 1% |
| StefanieW | 8/10 | 6259 days | 1% |
| schenk | 8/10 | 6259 days | 1% |
| groenewold | 7/10 | 6273 days | 1% |
| Jessy | 5/10 | 6273 days | 1% |
| Wilco | 7/10 | 6281 days | 1% |
| Bernd | 8/10 | 6282 days | 1% |
| Ruben | 8/10 | 6282 days | 1% |
| Paul | 10/10 | 6285 days | 1% |
| Loren | 10/10 | 6313 days | 1% |
| DavidO | 8/10 | 6316 days | 1% |
| Peter | 9/10 | 6321 days | 1% |
| David | 10/10 | 6322 days | 1% |
| Kylie | 8/10 | 6326 days | 1% |
| Ursula | 9/10 | 6339 days | 1% |
| Carrie | 8/10 | 6355 days | 1% |
| David | 10/10 | 6386 days | 1% |
| Howard | 9/10 | 6404 days | 1% |
| Chris | 8/10 | 6586 days | 1% |
| Anthony | 8/10 | 6589 days | 1% |
| Sandra Verbaarschot | 10/10 | 6589 days | 1% |
| Omer Harron | 10/10 | 6589 days | 1% |
| angela | 9/10 | 6592 days | 1% |
| Kerstin Brantryd | 5/10 | 6596 days | 1% |
| Sanne | 10/10 | 6602 days | 1% |
| Tessa McCormick | 9/10 | 6606 days | 1% |
| Sally and David Wallis | 10/10 | 6609 days | 1% |
| Martens | 8/10 | 6610 days | 1% |
| Dan Adamson | 9/10 | 6628 days | 1% |
| Ben | 7/10 | 6694 days | 1% |
| Kirsty Ranger | 9/10 | 6768 days | 1% |
| Andy Chapman | 8/10 | 6810 days | 1% |
| ranker_34 | 5/10 | 6810 days | 1% |
| Jo | 9/10 | 6810 days | 1% |
| Matous | 10/10 | 6929 days | 1% |
| Stefan&Gerte | 7/10 | 6932 days | 1% |
| Jenny | 9/10 | 6932 days | 1% |
| Paul Yacoumis | 8/10 | 6936 days | 1% |
| Deloraine | 7/10 | 6945 days | 1% |
| Denise Nick | 9/10 | 6947 days | 1% |
| Daniel | 10/10 | 6952 days | 1% |
| Martin Smith | 8/10 | 6956 days | 1% |
| Susan | 8/10 | 6959 days | 1% |
| sebastian | 10/10 | 6960 days | 1% |
| ranker_110 | 9/10 | 6967 days | 1% |
| Stefan | 8/10 | 6969 days | 1% |
| Svenja | 7/10 | 6974 days | 1% |
| Hirsh | 10/10 | 6979 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
-3.51% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 60 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 188 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 185 | -3.46% |
| 186 | -3.48% |
| 187 | -3.49% |
| 188 | -3.51% |
| 189 | -3.53% |
| 190 | -3.55% |
| 191 | -3.57% |
| … | … |
Balancing Adjustment
4.48% 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.