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
202 Valid Reviews
The Southern Discoveries experience has a total of 202 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 202 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 64 |
|
32% |
| 9/10 | 59 |
|
29% |
| 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% |
86.58% Average
The raw data average (mean) for all the Southern Discoveries valid reviews is 86.58% and is based on 202 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 202 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
74.55%
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 |
|---|---|---|---|
| Chris Creed | 10/10 | 29 days | 100% |
| Hirash | 1/10 | 91 days | 40% |
| Kat | 1/10 | 182 days | 40% |
| Remy and Rebecca Mans | 6/10 | 2929 days | 2% |
| Jocelyn Booy | 9/10 | 2954 days | 3% |
| David Horley | 7/10 | 2968 days | 3% |
| Vallee Manon | 9/10 | 3001 days | 3% |
| Nanda Dyke | 9/10 | 3027 days | 3% |
| victor diego | 7/10 | 3045 days | 2% |
| Samuel Michalak | 10/10 | 3050 days | 3% |
| Laura Munguira Vadillo | 10/10 | 3274 days | 2% |
| Benedikt Hang | 8/10 | 3281 days | 2% |
| Jorge Gonzoleis | 8/10 | 3284 days | 2% |
| Lauren Goebel | 10/10 | 3288 days | 2% |
| Rahel Baufeld | 8/10 | 3296 days | 2% |
| Peter Hodgson | 10/10 | 3322 days | 2% |
| doug fiddes | 10/10 | 3348 days | 2% |
| Dan Wilson | 7/10 | 3364 days | 2% |
| Corrie Medinea | 8/10 | 3372 days | 2% |
| Gracen Verheryden | 10/10 | 3375 days | 2% |
| Jennifer Hoyles | 10/10 | 3379 days | 2% |
| Lenka Korinkova | 7/10 | 3641 days | 1% |
| Rebecca Wharton | 9/10 | 3669 days | 1% |
| Andy Jobst | 8/10 | 3744 days | 1% |
| Rawiri johnston | 10/10 | 3927 days | 1% |
| Marek Heiurich | 7/10 | 3997 days | 1% |
| Matt Weston | 10/10 | 4002 days | 1% |
| Henrik Bours | 8/10 | 4003 days | 1% |
| Svenja Trubenbach | 9/10 | 4003 days | 1% |
| Sheila Galpin | 9/10 | 4017 days | 1% |
| Guillaume | 9/10 | 4028 days | 1% |
| Andreas Jung | 9/10 | 4043 days | 1% |
| Inga Memmen | 10/10 | 4045 days | 1% |
| Alacchi Moustier | 10/10 | 4060 days | 1% |
| Guy David | 9/10 | 4068 days | 1% |
| Michael Rohn | 8/10 | 4075 days | 1% |
| Rainer | 9/10 | 4359 days | 0% |
| Clarissa Hanck | 9/10 | 4359 days | 0% |
| Michael Heuer | 9/10 | 4361 days | 0% |
| Oram Salem | 6/10 | 4361 days | 0% |
| Lea Roser | 9/10 | 4370 days | 0% |
| Jitka Krejcova | 10/10 | 4370 days | 0% |
| Michal Sturma | 9/10 | 4370 days | 0% |
| Stientje van den Heuvel | 8/10 | 4370 days | 0% |
| Tom Somers | 9/10 | 4370 days | 0% |
| Brandon Wells | 8/10 | 4371 days | 0% |
| Tim Vennewold | 9/10 | 4371 days | 0% |
| Katharina | 8/10 | 4371 days | 0% |
| Lorna and Seb | 9/10 | 4387 days | 1% |
| Kristin Denny | 8/10 | 4394 days | 1% |
| Wendy Ward | 10/10 | 4400 days | 1% |
| Michal Maly | 9/10 | 4410 days | 1% |
| Michael Nolan | 10/10 | 4412 days | 1% |
| Hanneke P | 7/10 | 4443 days | 1% |
| Katharina Pape | 8/10 | 4472 days | 1% |
| Camille | 7/10 | 4479 days | 1% |
| Petr Stepanek | 10/10 | 4741 days | 1% |
| Larry Curtiss | 10/10 | 4746 days | 1% |
| nztintin | 10/10 | 4749 days | 1% |
| Marion Hassink | 7/10 | 4755 days | 1% |
| Stam | 6/10 | 4760 days | 1% |
| Ed & Katie Riches | 8/10 | 4761 days | 1% |
| Seth & Carla | 10/10 | 4763 days | 1% |
| Peter Putz | 10/10 | 4763 days | 1% |
| Tadej Ferjan | 10/10 | 4763 days | 1% |
| Nico Welagen | 10/10 | 4764 days | 1% |
| Alan Findlay | 9/10 | 4764 days | 1% |
| Andreas Kristiansen | 10/10 | 4772 days | 1% |
| Arnoldus Bergmans | 10/10 | 4844 days | 1% |
| Kai | 10/10 | 4846 days | 1% |
| Christoph | 9/10 | 4849 days | 1% |
| Jory Singer | 8/10 | 4855 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 4860 days | 1% |
| Kimberly St Louis | 10/10 | 5054 days | 1% |
| Lisa Milton | 10/10 | 5077 days | 1% |
| Rob O'Neill | 10/10 | 5086 days | 1% |
| Laura Thrower | 10/10 | 5089 days | 1% |
| Ofir Avimeir | 8/10 | 5093 days | 1% |
| Zachary Steinberg | 9/10 | 5094 days | 1% |
| Brian Jones | 9/10 | 5094 days | 1% |
| Sarah and Uli Glas | 9/10 | 5095 days | 1% |
| Boi Sagarra | 8/10 | 5098 days | 1% |
| John Tinus | 8/10 | 5099 days | 1% |
| Stefanie | 8/10 | 5100 days | 1% |
| Alex | 8/10 | 5102 days | 1% |
| Fredrik Thornell | 8/10 | 5105 days | 1% |
| Siggi Wick | 9/10 | 5106 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5107 days | 1% |
| Estel la Prado | 9/10 | 5109 days | 1% |
| Jeff and Carey Brown | 10/10 | 5114 days | 1% |
| LandJ | 7/10 | 5115 days | 1% |
| Katie Mitchell | 9/10 | 5115 days | 1% |
| Galamez | 9/10 | 5122 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5125 days | 1% |
| Thomas Reidinger | 6/10 | 5129 days | 1% |
| G Elliason | 9/10 | 5129 days | 1% |
| Van den Borne | 9/10 | 5129 days | 1% |
| Laura Hayes | 10/10 | 5130 days | 1% |
| Brian Lind | 7/10 | 5130 days | 1% |
| Chloe Finster | 10/10 | 5130 days | 1% |
| Jol Balder | 8/10 | 5131 days | 1% |
| Robert Haidt | 10/10 | 5136 days | 1% |
| VisualDelight | 10/10 | 5358 days | 1% |
| lindam | 10/10 | 5449 days | 1% |
| Martina Pankova | 9/10 | 5455 days | 1% |
| Neal | 10/10 | 5493 days | 1% |
| Bouwma | 8/10 | 5501 days | 1% |
| Mattias Thorm | 9/10 | 5502 days | 1% |
| Erik Hummelmose | 8/10 | 5504 days | 1% |
| Ian E | 10/10 | 5504 days | 1% |
| Kane Chain | 9/10 | 5525 days | 1% |
| johnma | 10/10 | 5559 days | 1% |
| ingeh | 8/10 | 5563 days | 1% |
| Jerry | 8/10 | 5570 days | 1% |
| Decuq | 10/10 | 5581 days | 1% |
| Carl and Angela Rapihana | 8/10 | 5593 days | 1% |
| Graham Butt | 10/10 | 5593 days | 1% |
| tessac | 9/10 | 5695 days | 1% |
| andriesk | 9/10 | 5696 days | 1% |
| nickm | 10/10 | 5769 days | 1% |
| Sofie | 10/10 | 5784 days | 1% |
| streneer | 10/10 | 5801 days | 1% |
| ElleGermany | 9/10 | 5802 days | 1% |
| JonK | 9/10 | 5802 days | 1% |
| NicolaW | 10/10 | 5806 days | 1% |
| DirkGermany | 10/10 | 5809 days | 1% |
| Bridget | 10/10 | 5818 days | 1% |
| Roy | 9/10 | 5818 days | 1% |
| HenizV | 9/10 | 5824 days | 1% |
| CraigB | 10/10 | 5826 days | 1% |
| familytravellers | 7/10 | 5826 days | 1% |
| Rissmann | 10/10 | 5830 days | 1% |
| Sara Hansson | 10/10 | 5831 days | 1% |
| Frank | 9/10 | 5832 days | 1% |
| KurtL | 8/10 | 5832 days | 1% |
| SteveW | 8/10 | 5833 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 5834 days | 1% |
| Joel | 9/10 | 5834 days | 1% |
| Suzie Lechner | 10/10 | 5834 days | 1% |
| KathrinS | 9/10 | 5834 days | 1% |
| Debbie | 7/10 | 5838 days | 1% |
| Stolz | 9/10 | 5838 days | 1% |
| Ulli | 9/10 | 5838 days | 1% |
| Tatjane | 8/10 | 5846 days | 1% |
| Claudia | 8/10 | 5846 days | 1% |
| SimonR | 8/10 | 5848 days | 1% |
| SonjaG | 9/10 | 5848 days | 1% |
| Steve | 7/10 | 5848 days | 1% |
| AdelineC | 8/10 | 5849 days | 1% |
| RobC1 | 7/10 | 5849 days | 1% |
| RichardB1 | 6/10 | 5849 days | 1% |
| JoT | 7/10 | 5849 days | 1% |
| Olly | 10/10 | 5850 days | 1% |
| Klaus | 9/10 | 5851 days | 1% |
| JanetH | 8/10 | 5862 days | 1% |
| StefanieW | 8/10 | 5864 days | 1% |
| schenk | 8/10 | 5865 days | 1% |
| groenewold | 7/10 | 5879 days | 1% |
| Jessy | 5/10 | 5879 days | 1% |
| Wilco | 7/10 | 5886 days | 1% |
| Bernd | 8/10 | 5887 days | 1% |
| Ruben | 8/10 | 5887 days | 1% |
| Paul | 10/10 | 5891 days | 1% |
| Loren | 10/10 | 5918 days | 1% |
| DavidO | 8/10 | 5921 days | 1% |
| Peter | 9/10 | 5927 days | 1% |
| David | 10/10 | 5928 days | 1% |
| Kylie | 8/10 | 5931 days | 1% |
| Ursula | 9/10 | 5945 days | 1% |
| Carrie | 8/10 | 5961 days | 1% |
| David | 10/10 | 5992 days | 1% |
| Howard | 9/10 | 6010 days | 1% |
| Chris | 8/10 | 6191 days | 1% |
| Anthony | 8/10 | 6194 days | 1% |
| Sandra Verbaarschot | 10/10 | 6194 days | 1% |
| Omer Harron | 10/10 | 6194 days | 1% |
| angela | 9/10 | 6197 days | 1% |
| Kerstin Brantryd | 5/10 | 6201 days | 1% |
| Sanne | 10/10 | 6207 days | 1% |
| Tessa McCormick | 9/10 | 6211 days | 1% |
| Sally and David Wallis | 10/10 | 6214 days | 1% |
| Martens | 8/10 | 6215 days | 1% |
| Dan Adamson | 9/10 | 6233 days | 1% |
| Ben | 7/10 | 6299 days | 1% |
| Kirsty Ranger | 9/10 | 6374 days | 1% |
| Andy Chapman | 8/10 | 6416 days | 1% |
| ranker_34 | 5/10 | 6416 days | 1% |
| Jo | 9/10 | 6416 days | 1% |
| Matous | 10/10 | 6535 days | 1% |
| Stefan&Gerte | 7/10 | 6538 days | 1% |
| Jenny | 9/10 | 6538 days | 1% |
| Paul Yacoumis | 8/10 | 6542 days | 1% |
| Deloraine | 7/10 | 6551 days | 1% |
| Denise Nick | 9/10 | 6553 days | 1% |
| Daniel | 10/10 | 6558 days | 1% |
| Martin Smith | 8/10 | 6561 days | 1% |
| Susan | 8/10 | 6564 days | 1% |
| sebastian | 10/10 | 6565 days | 1% |
| ranker_110 | 9/10 | 6572 days | 1% |
| Stefan | 8/10 | 6574 days | 1% |
| Svenja | 7/10 | 6579 days | 1% |
| Hirsh | 10/10 | 6584 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
-0.33% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 55 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 16 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 13 | -0.27% |
| 14 | -0.29% |
| 15 | -0.31% |
| 16 | -0.33% |
| 17 | -0.35% |
| 18 | -0.37% |
| 19 | -0.39% |
| … | … |
Balancing Adjustment
4.95% 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.