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
200 Valid Reviews
The Southern Discoveries experience has a total of 200 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 200 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 63 |
|
32% |
| 9/10 | 59 |
|
30% |
| 8/10 | 48 |
|
24% |
| 7/10 | 21 |
|
11% |
| 6/10 | 5 |
|
3% |
| 5/10 | 3 |
|
2% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 1 |
|
1% |
86.90% Average
The raw data average (mean) for all the Southern Discoveries valid reviews is 86.90% and is based on 200 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 200 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
74.84%
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 |
|---|---|---|---|
| Kat | 1/10 | 75 days | 100% |
| Remy and Rebecca Mans | 6/10 | 2822 days | 6% |
| Jocelyn Booy | 9/10 | 2847 days | 7% |
| David Horley | 7/10 | 2861 days | 7% |
| Vallee Manon | 9/10 | 2894 days | 7% |
| Nanda Dyke | 9/10 | 2920 days | 7% |
| victor diego | 7/10 | 2938 days | 6% |
| Samuel Michalak | 10/10 | 2943 days | 7% |
| Laura Munguira Vadillo | 10/10 | 3167 days | 6% |
| Benedikt Hang | 8/10 | 3174 days | 6% |
| Jorge Gonzoleis | 8/10 | 3177 days | 6% |
| Lauren Goebel | 10/10 | 3181 days | 6% |
| Rahel Baufeld | 8/10 | 3189 days | 6% |
| Peter Hodgson | 10/10 | 3215 days | 6% |
| doug fiddes | 10/10 | 3240 days | 5% |
| Dan Wilson | 7/10 | 3257 days | 5% |
| Corrie Medinea | 8/10 | 3265 days | 5% |
| Gracen Verheryden | 10/10 | 3268 days | 5% |
| Jennifer Hoyles | 10/10 | 3272 days | 5% |
| Lenka Korinkova | 7/10 | 3534 days | 4% |
| Rebecca Wharton | 9/10 | 3562 days | 4% |
| Andy Jobst | 8/10 | 3637 days | 3% |
| Rawiri johnston | 10/10 | 3820 days | 3% |
| Marek Heiurich | 7/10 | 3890 days | 2% |
| Matt Weston | 10/10 | 3895 days | 2% |
| Henrik Bours | 8/10 | 3896 days | 2% |
| Svenja Trubenbach | 9/10 | 3896 days | 2% |
| Sheila Galpin | 9/10 | 3910 days | 2% |
| Guillaume | 9/10 | 3921 days | 2% |
| Andreas Jung | 9/10 | 3936 days | 2% |
| Inga Memmen | 10/10 | 3938 days | 2% |
| Alacchi Moustier | 10/10 | 3953 days | 2% |
| Guy David | 9/10 | 3961 days | 2% |
| Michael Rohn | 8/10 | 3968 days | 2% |
| Rainer | 9/10 | 4252 days | 1% |
| Clarissa Hanck | 9/10 | 4252 days | 1% |
| Michael Heuer | 9/10 | 4254 days | 1% |
| Oram Salem | 6/10 | 4254 days | 0% |
| Lea Roser | 9/10 | 4263 days | 1% |
| Jitka Krejcova | 10/10 | 4263 days | 1% |
| Michal Sturma | 9/10 | 4263 days | 1% |
| Stientje van den Heuvel | 8/10 | 4263 days | 1% |
| Tom Somers | 9/10 | 4263 days | 1% |
| Brandon Wells | 8/10 | 4264 days | 1% |
| Tim Vennewold | 9/10 | 4264 days | 1% |
| Katharina | 8/10 | 4264 days | 1% |
| Lorna and Seb | 9/10 | 4280 days | 0% |
| Kristin Denny | 8/10 | 4287 days | 0% |
| Wendy Ward | 10/10 | 4293 days | 0% |
| Michal Maly | 9/10 | 4303 days | 0% |
| Michael Nolan | 10/10 | 4305 days | 0% |
| Hanneke P | 7/10 | 4336 days | 0% |
| Katharina Pape | 8/10 | 4365 days | 0% |
| Camille | 7/10 | 4372 days | 0% |
| Petr Stepanek | 10/10 | 4634 days | 2% |
| Larry Curtiss | 10/10 | 4639 days | 2% |
| nztintin | 10/10 | 4642 days | 2% |
| Marion Hassink | 7/10 | 4648 days | 2% |
| Stam | 6/10 | 4653 days | 2% |
| Ed & Katie Riches | 8/10 | 4654 days | 2% |
| Seth & Carla | 10/10 | 4656 days | 2% |
| Peter Putz | 10/10 | 4656 days | 2% |
| Tadej Ferjan | 10/10 | 4656 days | 2% |
| Nico Welagen | 10/10 | 4657 days | 2% |
| Alan Findlay | 9/10 | 4657 days | 2% |
| Andreas Kristiansen | 10/10 | 4665 days | 2% |
| Arnoldus Bergmans | 10/10 | 4737 days | 2% |
| Kai | 10/10 | 4739 days | 2% |
| Christoph | 9/10 | 4742 days | 2% |
| Jory Singer | 8/10 | 4748 days | 2% |
| Scott & Madeleine Bancroft | 9/10 | 4753 days | 2% |
| Kimberly St Louis | 10/10 | 4947 days | 2% |
| Lisa Milton | 10/10 | 4970 days | 2% |
| Rob O'Neill | 10/10 | 4979 days | 2% |
| Laura Thrower | 10/10 | 4982 days | 2% |
| Ofir Avimeir | 8/10 | 4986 days | 2% |
| Zachary Steinberg | 9/10 | 4987 days | 2% |
| Brian Jones | 9/10 | 4987 days | 2% |
| Sarah and Uli Glas | 9/10 | 4988 days | 2% |
| Boi Sagarra | 8/10 | 4991 days | 2% |
| John Tinus | 8/10 | 4992 days | 2% |
| Stefanie | 8/10 | 4993 days | 2% |
| Alex | 8/10 | 4995 days | 2% |
| Fredrik Thornell | 8/10 | 4998 days | 2% |
| Siggi Wick | 9/10 | 4999 days | 2% |
| Bruce & Elaine Chote | 10/10 | 5000 days | 2% |
| Estel la Prado | 9/10 | 5002 days | 2% |
| Jeff and Carey Brown | 10/10 | 5007 days | 2% |
| LandJ | 7/10 | 5008 days | 2% |
| Katie Mitchell | 9/10 | 5008 days | 2% |
| Galamez | 9/10 | 5015 days | 2% |
| Mr & Mrs Mackie | 9/10 | 5018 days | 2% |
| Thomas Reidinger | 6/10 | 5022 days | 2% |
| G Elliason | 9/10 | 5022 days | 2% |
| Van den Borne | 9/10 | 5022 days | 2% |
| Laura Hayes | 10/10 | 5023 days | 2% |
| Brian Lind | 7/10 | 5023 days | 2% |
| Chloe Finster | 10/10 | 5023 days | 2% |
| Jol Balder | 8/10 | 5024 days | 2% |
| Robert Haidt | 10/10 | 5029 days | 2% |
| VisualDelight | 10/10 | 5251 days | 2% |
| lindam | 10/10 | 5342 days | 2% |
| Martina Pankova | 9/10 | 5348 days | 2% |
| Neal | 10/10 | 5386 days | 2% |
| Bouwma | 8/10 | 5394 days | 2% |
| Mattias Thorm | 9/10 | 5395 days | 2% |
| Erik Hummelmose | 8/10 | 5397 days | 2% |
| Ian E | 10/10 | 5397 days | 2% |
| Kane Chain | 9/10 | 5418 days | 2% |
| johnma | 10/10 | 5452 days | 2% |
| ingeh | 8/10 | 5456 days | 2% |
| Jerry | 8/10 | 5463 days | 2% |
| Decuq | 10/10 | 5474 days | 2% |
| Carl and Angela Rapihana | 8/10 | 5486 days | 2% |
| Graham Butt | 10/10 | 5486 days | 2% |
| tessac | 9/10 | 5588 days | 2% |
| andriesk | 9/10 | 5589 days | 2% |
| nickm | 10/10 | 5662 days | 2% |
| Sofie | 10/10 | 5677 days | 2% |
| streneer | 10/10 | 5694 days | 2% |
| ElleGermany | 9/10 | 5695 days | 2% |
| JonK | 9/10 | 5695 days | 2% |
| NicolaW | 10/10 | 5699 days | 2% |
| DirkGermany | 10/10 | 5702 days | 2% |
| Bridget | 10/10 | 5711 days | 2% |
| Roy | 9/10 | 5711 days | 2% |
| HenizV | 9/10 | 5716 days | 2% |
| CraigB | 10/10 | 5719 days | 2% |
| familytravellers | 7/10 | 5719 days | 2% |
| Rissmann | 10/10 | 5723 days | 2% |
| Sara Hansson | 10/10 | 5724 days | 2% |
| Frank | 9/10 | 5724 days | 2% |
| KurtL | 8/10 | 5725 days | 2% |
| SteveW | 8/10 | 5726 days | 2% |
| Peter Bowen-Simpkins | 9/10 | 5727 days | 2% |
| Joel | 9/10 | 5727 days | 2% |
| Suzie Lechner | 10/10 | 5727 days | 2% |
| KathrinS | 9/10 | 5727 days | 2% |
| Debbie | 7/10 | 5730 days | 2% |
| Stolz | 9/10 | 5730 days | 2% |
| Ulli | 9/10 | 5731 days | 2% |
| Tatjane | 8/10 | 5738 days | 2% |
| Claudia | 8/10 | 5739 days | 2% |
| SimonR | 8/10 | 5741 days | 2% |
| SonjaG | 9/10 | 5741 days | 2% |
| Steve | 7/10 | 5741 days | 2% |
| AdelineC | 8/10 | 5742 days | 2% |
| RobC1 | 7/10 | 5742 days | 2% |
| RichardB1 | 6/10 | 5742 days | 2% |
| JoT | 7/10 | 5742 days | 2% |
| Olly | 10/10 | 5743 days | 2% |
| Klaus | 9/10 | 5743 days | 2% |
| JanetH | 8/10 | 5755 days | 2% |
| StefanieW | 8/10 | 5757 days | 2% |
| schenk | 8/10 | 5757 days | 2% |
| groenewold | 7/10 | 5771 days | 2% |
| Jessy | 5/10 | 5771 days | 2% |
| Wilco | 7/10 | 5779 days | 2% |
| Bernd | 8/10 | 5780 days | 2% |
| Ruben | 8/10 | 5780 days | 2% |
| Paul | 10/10 | 5783 days | 2% |
| Loren | 10/10 | 5811 days | 2% |
| DavidO | 8/10 | 5814 days | 2% |
| Peter | 9/10 | 5819 days | 2% |
| David | 10/10 | 5820 days | 2% |
| Kylie | 8/10 | 5824 days | 2% |
| Ursula | 9/10 | 5837 days | 2% |
| Carrie | 8/10 | 5853 days | 2% |
| David | 10/10 | 5884 days | 2% |
| Howard | 9/10 | 5902 days | 2% |
| Chris | 8/10 | 6084 days | 2% |
| Anthony | 8/10 | 6087 days | 2% |
| Sandra Verbaarschot | 10/10 | 6087 days | 2% |
| Omer Harron | 10/10 | 6087 days | 2% |
| angela | 9/10 | 6090 days | 2% |
| Kerstin Brantryd | 5/10 | 6094 days | 2% |
| Sanne | 10/10 | 6100 days | 2% |
| Tessa McCormick | 9/10 | 6104 days | 2% |
| Sally and David Wallis | 10/10 | 6107 days | 2% |
| Martens | 8/10 | 6108 days | 2% |
| Dan Adamson | 9/10 | 6126 days | 2% |
| Ben | 7/10 | 6192 days | 2% |
| Kirsty Ranger | 9/10 | 6267 days | 2% |
| Andy Chapman | 8/10 | 6309 days | 2% |
| ranker_34 | 5/10 | 6309 days | 2% |
| Jo | 9/10 | 6309 days | 2% |
| Matous | 10/10 | 6428 days | 2% |
| Stefan&Gerte | 7/10 | 6431 days | 2% |
| Jenny | 9/10 | 6431 days | 2% |
| Paul Yacoumis | 8/10 | 6435 days | 2% |
| Deloraine | 7/10 | 6444 days | 2% |
| Denise Nick | 9/10 | 6446 days | 2% |
| Daniel | 10/10 | 6451 days | 2% |
| Martin Smith | 8/10 | 6454 days | 2% |
| Susan | 8/10 | 6457 days | 2% |
| sebastian | 10/10 | 6458 days | 2% |
| ranker_110 | 9/10 | 6465 days | 2% |
| Stefan | 8/10 | 6467 days | 2% |
| Svenja | 7/10 | 6472 days | 2% |
| Hirsh | 10/10 | 6477 days | 2% |
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
-1.30% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 44 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 65 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 62 | -1.24% |
| 63 | -1.26% |
| 64 | -1.28% |
| 65 | -1.30% |
| 66 | -1.33% |
| 67 | -1.35% |
| 68 | -1.37% |
| … | … |
Balancing Adjustment
5.24% 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.