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
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
75.07%
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 | 19 days | 100% |
| Remy and Rebecca Mans | 6/10 | 2766 days | 6% |
| Jocelyn Booy | 9/10 | 2791 days | 7% |
| David Horley | 7/10 | 2805 days | 7% |
| Vallee Manon | 9/10 | 2838 days | 7% |
| Nanda Dyke | 9/10 | 2864 days | 7% |
| victor diego | 7/10 | 2882 days | 6% |
| Samuel Michalak | 10/10 | 2887 days | 7% |
| Laura Munguira Vadillo | 10/10 | 3111 days | 6% |
| Benedikt Hang | 8/10 | 3118 days | 6% |
| Jorge Gonzoleis | 8/10 | 3121 days | 6% |
| Lauren Goebel | 10/10 | 3125 days | 6% |
| Rahel Baufeld | 8/10 | 3133 days | 6% |
| Peter Hodgson | 10/10 | 3159 days | 6% |
| doug fiddes | 10/10 | 3184 days | 5% |
| Dan Wilson | 7/10 | 3201 days | 5% |
| Corrie Medinea | 8/10 | 3209 days | 5% |
| Gracen Verheryden | 10/10 | 3212 days | 5% |
| Jennifer Hoyles | 10/10 | 3216 days | 5% |
| Lenka Korinkova | 7/10 | 3478 days | 4% |
| Rebecca Wharton | 9/10 | 3506 days | 4% |
| Andy Jobst | 8/10 | 3581 days | 3% |
| Rawiri johnston | 10/10 | 3764 days | 3% |
| Marek Heiurich | 7/10 | 3834 days | 2% |
| Matt Weston | 10/10 | 3839 days | 2% |
| Henrik Bours | 8/10 | 3840 days | 2% |
| Svenja Trubenbach | 9/10 | 3840 days | 2% |
| Sheila Galpin | 9/10 | 3854 days | 2% |
| Guillaume | 9/10 | 3865 days | 2% |
| Andreas Jung | 9/10 | 3880 days | 2% |
| Inga Memmen | 10/10 | 3882 days | 2% |
| Alacchi Moustier | 10/10 | 3897 days | 2% |
| Guy David | 9/10 | 3905 days | 2% |
| Michael Rohn | 8/10 | 3912 days | 2% |
| Rainer | 9/10 | 4196 days | 1% |
| Clarissa Hanck | 9/10 | 4196 days | 1% |
| Michael Heuer | 9/10 | 4198 days | 1% |
| Oram Salem | 6/10 | 4198 days | 0% |
| Lea Roser | 9/10 | 4207 days | 1% |
| Jitka Krejcova | 10/10 | 4207 days | 1% |
| Michal Sturma | 9/10 | 4207 days | 1% |
| Stientje van den Heuvel | 8/10 | 4207 days | 1% |
| Tom Somers | 9/10 | 4207 days | 1% |
| Brandon Wells | 8/10 | 4208 days | 1% |
| Tim Vennewold | 9/10 | 4208 days | 1% |
| Katharina | 8/10 | 4208 days | 1% |
| Lorna and Seb | 9/10 | 4224 days | 0% |
| Kristin Denny | 8/10 | 4231 days | 0% |
| Wendy Ward | 10/10 | 4237 days | 0% |
| Michal Maly | 9/10 | 4247 days | 0% |
| Michael Nolan | 10/10 | 4249 days | 0% |
| Hanneke P | 7/10 | 4280 days | 0% |
| Katharina Pape | 8/10 | 4309 days | 0% |
| Camille | 7/10 | 4316 days | 0% |
| Petr Stepanek | 10/10 | 4578 days | 2% |
| Larry Curtiss | 10/10 | 4583 days | 2% |
| nztintin | 10/10 | 4586 days | 2% |
| Marion Hassink | 7/10 | 4592 days | 2% |
| Stam | 6/10 | 4597 days | 2% |
| Ed & Katie Riches | 8/10 | 4598 days | 2% |
| Seth & Carla | 10/10 | 4600 days | 2% |
| Peter Putz | 10/10 | 4600 days | 2% |
| Tadej Ferjan | 10/10 | 4600 days | 2% |
| Nico Welagen | 10/10 | 4601 days | 2% |
| Alan Findlay | 9/10 | 4601 days | 2% |
| Andreas Kristiansen | 10/10 | 4609 days | 2% |
| Arnoldus Bergmans | 10/10 | 4681 days | 2% |
| Kai | 10/10 | 4683 days | 2% |
| Christoph | 9/10 | 4686 days | 2% |
| Jory Singer | 8/10 | 4692 days | 2% |
| Scott & Madeleine Bancroft | 9/10 | 4697 days | 2% |
| Kimberly St Louis | 10/10 | 4891 days | 2% |
| Lisa Milton | 10/10 | 4914 days | 2% |
| Rob O'Neill | 10/10 | 4923 days | 2% |
| Laura Thrower | 10/10 | 4926 days | 2% |
| Ofir Avimeir | 8/10 | 4930 days | 2% |
| Zachary Steinberg | 9/10 | 4931 days | 2% |
| Brian Jones | 9/10 | 4931 days | 2% |
| Sarah and Uli Glas | 9/10 | 4932 days | 2% |
| Boi Sagarra | 8/10 | 4935 days | 2% |
| John Tinus | 8/10 | 4936 days | 2% |
| Stefanie | 8/10 | 4937 days | 2% |
| Alex | 8/10 | 4939 days | 2% |
| Fredrik Thornell | 8/10 | 4942 days | 2% |
| Siggi Wick | 9/10 | 4943 days | 2% |
| Bruce & Elaine Chote | 10/10 | 4944 days | 2% |
| Estel la Prado | 9/10 | 4946 days | 2% |
| Jeff and Carey Brown | 10/10 | 4951 days | 2% |
| LandJ | 7/10 | 4952 days | 2% |
| Katie Mitchell | 9/10 | 4952 days | 2% |
| Galamez | 9/10 | 4959 days | 2% |
| Mr & Mrs Mackie | 9/10 | 4962 days | 2% |
| Thomas Reidinger | 6/10 | 4966 days | 2% |
| G Elliason | 9/10 | 4966 days | 2% |
| Van den Borne | 9/10 | 4966 days | 2% |
| Laura Hayes | 10/10 | 4967 days | 2% |
| Brian Lind | 7/10 | 4967 days | 2% |
| Chloe Finster | 10/10 | 4967 days | 2% |
| Jol Balder | 8/10 | 4968 days | 2% |
| Robert Haidt | 10/10 | 4973 days | 2% |
| VisualDelight | 10/10 | 5195 days | 2% |
| lindam | 10/10 | 5286 days | 2% |
| Martina Pankova | 9/10 | 5292 days | 2% |
| Neal | 10/10 | 5330 days | 2% |
| Bouwma | 8/10 | 5338 days | 2% |
| Mattias Thorm | 9/10 | 5339 days | 2% |
| Erik Hummelmose | 8/10 | 5341 days | 2% |
| Ian E | 10/10 | 5341 days | 2% |
| Kane Chain | 9/10 | 5362 days | 2% |
| johnma | 10/10 | 5396 days | 2% |
| ingeh | 8/10 | 5400 days | 2% |
| Jerry | 8/10 | 5407 days | 2% |
| Decuq | 10/10 | 5418 days | 2% |
| Carl and Angela Rapihana | 8/10 | 5430 days | 2% |
| Graham Butt | 10/10 | 5430 days | 2% |
| tessac | 9/10 | 5532 days | 2% |
| andriesk | 9/10 | 5533 days | 2% |
| nickm | 10/10 | 5606 days | 2% |
| Sofie | 10/10 | 5621 days | 2% |
| streneer | 10/10 | 5638 days | 2% |
| ElleGermany | 9/10 | 5639 days | 2% |
| JonK | 9/10 | 5639 days | 2% |
| NicolaW | 10/10 | 5643 days | 2% |
| DirkGermany | 10/10 | 5646 days | 2% |
| Bridget | 10/10 | 5655 days | 2% |
| Roy | 9/10 | 5655 days | 2% |
| HenizV | 9/10 | 5660 days | 2% |
| CraigB | 10/10 | 5663 days | 2% |
| familytravellers | 7/10 | 5663 days | 2% |
| Rissmann | 10/10 | 5667 days | 2% |
| Sara Hansson | 10/10 | 5668 days | 2% |
| Frank | 9/10 | 5668 days | 2% |
| KurtL | 8/10 | 5669 days | 2% |
| SteveW | 8/10 | 5670 days | 2% |
| Peter Bowen-Simpkins | 9/10 | 5671 days | 2% |
| Joel | 9/10 | 5671 days | 2% |
| Suzie Lechner | 10/10 | 5671 days | 2% |
| KathrinS | 9/10 | 5671 days | 2% |
| Debbie | 7/10 | 5674 days | 2% |
| Stolz | 9/10 | 5674 days | 2% |
| Ulli | 9/10 | 5675 days | 2% |
| Tatjane | 8/10 | 5682 days | 2% |
| Claudia | 8/10 | 5683 days | 2% |
| SimonR | 8/10 | 5685 days | 2% |
| SonjaG | 9/10 | 5685 days | 2% |
| Steve | 7/10 | 5685 days | 2% |
| AdelineC | 8/10 | 5686 days | 2% |
| RobC1 | 7/10 | 5686 days | 2% |
| RichardB1 | 6/10 | 5686 days | 2% |
| JoT | 7/10 | 5686 days | 2% |
| Olly | 10/10 | 5687 days | 2% |
| Klaus | 9/10 | 5687 days | 2% |
| JanetH | 8/10 | 5699 days | 2% |
| StefanieW | 8/10 | 5701 days | 2% |
| schenk | 8/10 | 5701 days | 2% |
| groenewold | 7/10 | 5715 days | 2% |
| Jessy | 5/10 | 5715 days | 2% |
| Wilco | 7/10 | 5723 days | 2% |
| Bernd | 8/10 | 5724 days | 2% |
| Ruben | 8/10 | 5724 days | 2% |
| Paul | 10/10 | 5727 days | 2% |
| Loren | 10/10 | 5755 days | 2% |
| DavidO | 8/10 | 5758 days | 2% |
| Peter | 9/10 | 5763 days | 2% |
| David | 10/10 | 5764 days | 2% |
| Kylie | 8/10 | 5768 days | 2% |
| Ursula | 9/10 | 5781 days | 2% |
| Carrie | 8/10 | 5797 days | 2% |
| David | 10/10 | 5828 days | 2% |
| Howard | 9/10 | 5846 days | 2% |
| Chris | 8/10 | 6028 days | 2% |
| Anthony | 8/10 | 6031 days | 2% |
| Sandra Verbaarschot | 10/10 | 6031 days | 2% |
| Omer Harron | 10/10 | 6031 days | 2% |
| angela | 9/10 | 6034 days | 2% |
| Kerstin Brantryd | 5/10 | 6038 days | 2% |
| Sanne | 10/10 | 6044 days | 2% |
| Tessa McCormick | 9/10 | 6048 days | 2% |
| Sally and David Wallis | 10/10 | 6051 days | 2% |
| Martens | 8/10 | 6052 days | 2% |
| Dan Adamson | 9/10 | 6070 days | 2% |
| Ben | 7/10 | 6136 days | 2% |
| Kirsty Ranger | 9/10 | 6211 days | 2% |
| Andy Chapman | 8/10 | 6253 days | 2% |
| ranker_34 | 5/10 | 6253 days | 2% |
| Jo | 9/10 | 6253 days | 2% |
| Matous | 10/10 | 6372 days | 2% |
| Stefan&Gerte | 7/10 | 6375 days | 2% |
| Jenny | 9/10 | 6375 days | 2% |
| Paul Yacoumis | 8/10 | 6379 days | 2% |
| Deloraine | 7/10 | 6388 days | 2% |
| Denise Nick | 9/10 | 6390 days | 2% |
| Daniel | 10/10 | 6395 days | 2% |
| Martin Smith | 8/10 | 6398 days | 2% |
| Susan | 8/10 | 6401 days | 2% |
| sebastian | 10/10 | 6402 days | 2% |
| ranker_110 | 9/10 | 6409 days | 2% |
| Stefan | 8/10 | 6411 days | 2% |
| Svenja | 7/10 | 6416 days | 2% |
| Hirsh | 10/10 | 6421 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
-0.14% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 74 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 9 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 6 | -0.09% |
| 7 | -0.11% |
| 8 | -0.12% |
| 9 | -0.14% |
| 10 | -0.15% |
| 11 | -0.17% |
| 12 | -0.18% |
| … | … |
Balancing Adjustment
4.67% 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.