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.
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
78.44%
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 | 131 days | 100% |
| Chris Creed | 10/10 | 343 days | 95% |
| Hirash | 1/10 | 405 days | 38% |
| Kat | 1/10 | 496 days | 36% |
| Remy and Rebecca Mans | 6/10 | 3243 days | 2% |
| Jocelyn Booy | 9/10 | 3268 days | 2% |
| David Horley | 7/10 | 3282 days | 2% |
| Vallee Manon | 9/10 | 3315 days | 2% |
| Nanda Dyke | 9/10 | 3341 days | 2% |
| victor diego | 7/10 | 3359 days | 2% |
| Samuel Michalak | 10/10 | 3364 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3588 days | 2% |
| Benedikt Hang | 8/10 | 3595 days | 2% |
| Jorge Gonzoleis | 8/10 | 3598 days | 2% |
| Lauren Goebel | 10/10 | 3602 days | 2% |
| Rahel Baufeld | 8/10 | 3610 days | 1% |
| Peter Hodgson | 10/10 | 3636 days | 1% |
| doug fiddes | 10/10 | 3662 days | 1% |
| Dan Wilson | 7/10 | 3678 days | 1% |
| Corrie Medinea | 8/10 | 3686 days | 1% |
| Gracen Verheryden | 10/10 | 3689 days | 1% |
| Jennifer Hoyles | 10/10 | 3693 days | 1% |
| Lenka Korinkova | 7/10 | 3955 days | 1% |
| Rebecca Wharton | 9/10 | 3983 days | 1% |
| Andy Jobst | 8/10 | 4058 days | 1% |
| Rawiri johnston | 10/10 | 4241 days | 0% |
| Marek Heiurich | 7/10 | 4311 days | 0% |
| Matt Weston | 10/10 | 4316 days | 0% |
| Henrik Bours | 8/10 | 4317 days | 0% |
| Svenja Trubenbach | 9/10 | 4317 days | 0% |
| Sheila Galpin | 9/10 | 4331 days | 0% |
| Guillaume | 9/10 | 4342 days | 0% |
| Andreas Jung | 9/10 | 4357 days | 0% |
| Inga Memmen | 10/10 | 4359 days | 0% |
| Alacchi Moustier | 10/10 | 4374 days | 0% |
| Guy David | 9/10 | 4382 days | 1% |
| Michael Rohn | 8/10 | 4389 days | 1% |
| Rainer | 9/10 | 4673 days | 1% |
| Clarissa Hanck | 9/10 | 4673 days | 1% |
| Michael Heuer | 9/10 | 4675 days | 1% |
| Oram Salem | 6/10 | 4675 days | 1% |
| Lea Roser | 9/10 | 4684 days | 1% |
| Jitka Krejcova | 10/10 | 4684 days | 1% |
| Michal Sturma | 9/10 | 4684 days | 1% |
| Stientje van den Heuvel | 8/10 | 4684 days | 1% |
| Tom Somers | 9/10 | 4684 days | 1% |
| Brandon Wells | 8/10 | 4685 days | 1% |
| Tim Vennewold | 9/10 | 4685 days | 1% |
| Katharina | 8/10 | 4685 days | 1% |
| Lorna and Seb | 9/10 | 4701 days | 1% |
| Kristin Denny | 8/10 | 4708 days | 1% |
| Wendy Ward | 10/10 | 4714 days | 1% |
| Michal Maly | 9/10 | 4724 days | 1% |
| Michael Nolan | 10/10 | 4726 days | 1% |
| Hanneke P | 7/10 | 4757 days | 1% |
| Katharina Pape | 8/10 | 4786 days | 1% |
| Camille | 7/10 | 4793 days | 1% |
| Petr Stepanek | 10/10 | 5055 days | 1% |
| Larry Curtiss | 10/10 | 5060 days | 1% |
| nztintin | 10/10 | 5063 days | 1% |
| Marion Hassink | 7/10 | 5069 days | 1% |
| Stam | 6/10 | 5074 days | 1% |
| Ed & Katie Riches | 8/10 | 5075 days | 1% |
| Seth & Carla | 10/10 | 5077 days | 1% |
| Peter Putz | 10/10 | 5077 days | 1% |
| Tadej Ferjan | 10/10 | 5077 days | 1% |
| Nico Welagen | 10/10 | 5078 days | 1% |
| Alan Findlay | 9/10 | 5078 days | 1% |
| Andreas Kristiansen | 10/10 | 5086 days | 1% |
| Arnoldus Bergmans | 10/10 | 5158 days | 1% |
| Kai | 10/10 | 5160 days | 1% |
| Christoph | 9/10 | 5163 days | 1% |
| Jory Singer | 8/10 | 5169 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5174 days | 1% |
| Kimberly St Louis | 10/10 | 5368 days | 1% |
| Lisa Milton | 10/10 | 5391 days | 1% |
| Rob O'Neill | 10/10 | 5400 days | 1% |
| Laura Thrower | 10/10 | 5403 days | 1% |
| Ofir Avimeir | 8/10 | 5407 days | 1% |
| Zachary Steinberg | 9/10 | 5408 days | 1% |
| Brian Jones | 9/10 | 5408 days | 1% |
| Sarah and Uli Glas | 9/10 | 5409 days | 1% |
| Boi Sagarra | 8/10 | 5412 days | 1% |
| John Tinus | 8/10 | 5413 days | 1% |
| Stefanie | 8/10 | 5414 days | 1% |
| Alex | 8/10 | 5416 days | 1% |
| Fredrik Thornell | 8/10 | 5419 days | 1% |
| Siggi Wick | 9/10 | 5420 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5421 days | 1% |
| Estel la Prado | 9/10 | 5423 days | 1% |
| Jeff and Carey Brown | 10/10 | 5428 days | 1% |
| LandJ | 7/10 | 5429 days | 1% |
| Katie Mitchell | 9/10 | 5429 days | 1% |
| Galamez | 9/10 | 5436 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5439 days | 1% |
| Thomas Reidinger | 6/10 | 5443 days | 1% |
| G Elliason | 9/10 | 5443 days | 1% |
| Van den Borne | 9/10 | 5443 days | 1% |
| Laura Hayes | 10/10 | 5444 days | 1% |
| Brian Lind | 7/10 | 5444 days | 1% |
| Chloe Finster | 10/10 | 5444 days | 1% |
| Jol Balder | 8/10 | 5445 days | 1% |
| Robert Haidt | 10/10 | 5450 days | 1% |
| VisualDelight | 10/10 | 5672 days | 1% |
| lindam | 10/10 | 5763 days | 1% |
| Martina Pankova | 9/10 | 5769 days | 1% |
| Neal | 10/10 | 5807 days | 1% |
| Bouwma | 8/10 | 5815 days | 1% |
| Mattias Thorm | 9/10 | 5816 days | 1% |
| Erik Hummelmose | 8/10 | 5818 days | 1% |
| Ian E | 10/10 | 5818 days | 1% |
| Kane Chain | 9/10 | 5839 days | 1% |
| johnma | 10/10 | 5873 days | 1% |
| ingeh | 8/10 | 5877 days | 1% |
| Jerry | 8/10 | 5884 days | 1% |
| Decuq | 10/10 | 5895 days | 1% |
| Carl and Angela Rapihana | 8/10 | 5907 days | 1% |
| Graham Butt | 10/10 | 5907 days | 1% |
| tessac | 9/10 | 6009 days | 1% |
| andriesk | 9/10 | 6010 days | 1% |
| nickm | 10/10 | 6083 days | 1% |
| Sofie | 10/10 | 6098 days | 1% |
| streneer | 10/10 | 6115 days | 1% |
| ElleGermany | 9/10 | 6116 days | 1% |
| JonK | 9/10 | 6116 days | 1% |
| NicolaW | 10/10 | 6120 days | 1% |
| DirkGermany | 10/10 | 6123 days | 1% |
| Bridget | 10/10 | 6132 days | 1% |
| Roy | 9/10 | 6132 days | 1% |
| HenizV | 9/10 | 6138 days | 1% |
| CraigB | 10/10 | 6140 days | 1% |
| familytravellers | 7/10 | 6140 days | 1% |
| Rissmann | 10/10 | 6144 days | 1% |
| Sara Hansson | 10/10 | 6145 days | 1% |
| Frank | 9/10 | 6146 days | 1% |
| KurtL | 8/10 | 6146 days | 1% |
| SteveW | 8/10 | 6147 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6148 days | 1% |
| Joel | 9/10 | 6148 days | 1% |
| Suzie Lechner | 10/10 | 6148 days | 1% |
| KathrinS | 9/10 | 6148 days | 1% |
| Debbie | 7/10 | 6152 days | 1% |
| Stolz | 9/10 | 6152 days | 1% |
| Ulli | 9/10 | 6152 days | 1% |
| Tatjane | 8/10 | 6160 days | 1% |
| Claudia | 8/10 | 6160 days | 1% |
| SimonR | 8/10 | 6162 days | 1% |
| SonjaG | 9/10 | 6162 days | 1% |
| Steve | 7/10 | 6162 days | 1% |
| AdelineC | 8/10 | 6163 days | 1% |
| RobC1 | 7/10 | 6163 days | 1% |
| RichardB1 | 6/10 | 6163 days | 1% |
| JoT | 7/10 | 6163 days | 1% |
| Olly | 10/10 | 6164 days | 1% |
| Klaus | 9/10 | 6165 days | 1% |
| JanetH | 8/10 | 6176 days | 1% |
| StefanieW | 8/10 | 6178 days | 1% |
| schenk | 8/10 | 6179 days | 1% |
| groenewold | 7/10 | 6193 days | 1% |
| Jessy | 5/10 | 6193 days | 1% |
| Wilco | 7/10 | 6200 days | 1% |
| Bernd | 8/10 | 6201 days | 1% |
| Ruben | 8/10 | 6201 days | 1% |
| Paul | 10/10 | 6205 days | 1% |
| Loren | 10/10 | 6232 days | 1% |
| DavidO | 8/10 | 6235 days | 1% |
| Peter | 9/10 | 6241 days | 1% |
| David | 10/10 | 6242 days | 1% |
| Kylie | 8/10 | 6245 days | 1% |
| Ursula | 9/10 | 6259 days | 1% |
| Carrie | 8/10 | 6275 days | 1% |
| David | 10/10 | 6306 days | 1% |
| Howard | 9/10 | 6324 days | 1% |
| Chris | 8/10 | 6505 days | 1% |
| Anthony | 8/10 | 6508 days | 1% |
| Sandra Verbaarschot | 10/10 | 6508 days | 1% |
| Omer Harron | 10/10 | 6508 days | 1% |
| angela | 9/10 | 6511 days | 1% |
| Kerstin Brantryd | 5/10 | 6515 days | 1% |
| Sanne | 10/10 | 6521 days | 1% |
| Tessa McCormick | 9/10 | 6525 days | 1% |
| Sally and David Wallis | 10/10 | 6528 days | 1% |
| Martens | 8/10 | 6529 days | 1% |
| Dan Adamson | 9/10 | 6547 days | 1% |
| Ben | 7/10 | 6613 days | 1% |
| Kirsty Ranger | 9/10 | 6688 days | 1% |
| Andy Chapman | 8/10 | 6730 days | 1% |
| ranker_34 | 5/10 | 6730 days | 1% |
| Jo | 9/10 | 6730 days | 1% |
| Matous | 10/10 | 6849 days | 1% |
| Stefan&Gerte | 7/10 | 6852 days | 1% |
| Jenny | 9/10 | 6852 days | 1% |
| Paul Yacoumis | 8/10 | 6856 days | 1% |
| Deloraine | 7/10 | 6865 days | 1% |
| Denise Nick | 9/10 | 6867 days | 1% |
| Daniel | 10/10 | 6872 days | 1% |
| Martin Smith | 8/10 | 6875 days | 1% |
| Susan | 8/10 | 6878 days | 1% |
| sebastian | 10/10 | 6879 days | 1% |
| ranker_110 | 9/10 | 6886 days | 1% |
| Stefan | 8/10 | 6888 days | 1% |
| Svenja | 7/10 | 6893 days | 1% |
| Hirsh | 10/10 | 6898 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
-2.17% 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 107 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 104 | -2.11% |
| 105 | -2.13% |
| 106 | -2.15% |
| 107 | -2.17% |
| 108 | -2.19% |
| 109 | -2.21% |
| 110 | -2.23% |
| … | … |
Balancing Adjustment
4.17% 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.