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
201 Valid Reviews
The Southern Discoveries experience has a total of 201 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 201 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 63 |
|
31% |
| 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% |
86.52% Average
The raw data average (mean) for all the Southern Discoveries valid reviews is 86.52% and is based on 201 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 201 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
65.47%
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 |
|---|---|---|---|
| Hirash | 1/10 | 61 days | 100% |
| Kat | 1/10 | 152 days | 99% |
| Remy and Rebecca Mans | 6/10 | 2899 days | 6% |
| Jocelyn Booy | 9/10 | 2924 days | 7% |
| David Horley | 7/10 | 2938 days | 6% |
| Vallee Manon | 9/10 | 2971 days | 7% |
| Nanda Dyke | 9/10 | 2997 days | 7% |
| victor diego | 7/10 | 3015 days | 6% |
| Samuel Michalak | 10/10 | 3020 days | 7% |
| Laura Munguira Vadillo | 10/10 | 3244 days | 5% |
| Benedikt Hang | 8/10 | 3251 days | 5% |
| Jorge Gonzoleis | 8/10 | 3254 days | 5% |
| Lauren Goebel | 10/10 | 3258 days | 5% |
| Rahel Baufeld | 8/10 | 3266 days | 5% |
| Peter Hodgson | 10/10 | 3292 days | 5% |
| doug fiddes | 10/10 | 3317 days | 5% |
| Dan Wilson | 7/10 | 3334 days | 5% |
| Corrie Medinea | 8/10 | 3342 days | 5% |
| Gracen Verheryden | 10/10 | 3345 days | 5% |
| Jennifer Hoyles | 10/10 | 3349 days | 5% |
| Lenka Korinkova | 7/10 | 3611 days | 3% |
| Rebecca Wharton | 9/10 | 3639 days | 3% |
| Andy Jobst | 8/10 | 3714 days | 3% |
| Rawiri johnston | 10/10 | 3897 days | 2% |
| Marek Heiurich | 7/10 | 3967 days | 2% |
| Matt Weston | 10/10 | 3972 days | 2% |
| Henrik Bours | 8/10 | 3973 days | 2% |
| Svenja Trubenbach | 9/10 | 3973 days | 2% |
| Sheila Galpin | 9/10 | 3987 days | 2% |
| Guillaume | 9/10 | 3998 days | 2% |
| Andreas Jung | 9/10 | 4013 days | 2% |
| Inga Memmen | 10/10 | 4015 days | 2% |
| Alacchi Moustier | 10/10 | 4030 days | 2% |
| Guy David | 9/10 | 4038 days | 2% |
| Michael Rohn | 8/10 | 4045 days | 2% |
| Rainer | 9/10 | 4329 days | 0% |
| Clarissa Hanck | 9/10 | 4329 days | 0% |
| Michael Heuer | 9/10 | 4331 days | 0% |
| Oram Salem | 6/10 | 4331 days | 0% |
| Lea Roser | 9/10 | 4340 days | 0% |
| Jitka Krejcova | 10/10 | 4340 days | 0% |
| Michal Sturma | 9/10 | 4340 days | 0% |
| Stientje van den Heuvel | 8/10 | 4340 days | 0% |
| Tom Somers | 9/10 | 4340 days | 0% |
| Brandon Wells | 8/10 | 4341 days | 0% |
| Tim Vennewold | 9/10 | 4341 days | 0% |
| Katharina | 8/10 | 4341 days | 0% |
| Lorna and Seb | 9/10 | 4357 days | 0% |
| Kristin Denny | 8/10 | 4364 days | 0% |
| Wendy Ward | 10/10 | 4370 days | 0% |
| Michal Maly | 9/10 | 4380 days | 2% |
| Michael Nolan | 10/10 | 4382 days | 2% |
| Hanneke P | 7/10 | 4413 days | 2% |
| Katharina Pape | 8/10 | 4442 days | 2% |
| Camille | 7/10 | 4449 days | 2% |
| Petr Stepanek | 10/10 | 4711 days | 2% |
| Larry Curtiss | 10/10 | 4716 days | 2% |
| nztintin | 10/10 | 4719 days | 2% |
| Marion Hassink | 7/10 | 4725 days | 2% |
| Stam | 6/10 | 4730 days | 2% |
| Ed & Katie Riches | 8/10 | 4731 days | 2% |
| Seth & Carla | 10/10 | 4733 days | 2% |
| Peter Putz | 10/10 | 4733 days | 2% |
| Tadej Ferjan | 10/10 | 4733 days | 2% |
| Nico Welagen | 10/10 | 4734 days | 2% |
| Alan Findlay | 9/10 | 4734 days | 2% |
| Andreas Kristiansen | 10/10 | 4742 days | 2% |
| Arnoldus Bergmans | 10/10 | 4814 days | 2% |
| Kai | 10/10 | 4816 days | 2% |
| Christoph | 9/10 | 4819 days | 2% |
| Jory Singer | 8/10 | 4825 days | 2% |
| Scott & Madeleine Bancroft | 9/10 | 4830 days | 2% |
| Kimberly St Louis | 10/10 | 5024 days | 2% |
| Lisa Milton | 10/10 | 5047 days | 2% |
| Rob O'Neill | 10/10 | 5056 days | 2% |
| Laura Thrower | 10/10 | 5059 days | 2% |
| Ofir Avimeir | 8/10 | 5063 days | 2% |
| Zachary Steinberg | 9/10 | 5064 days | 2% |
| Brian Jones | 9/10 | 5064 days | 2% |
| Sarah and Uli Glas | 9/10 | 5065 days | 2% |
| Boi Sagarra | 8/10 | 5068 days | 2% |
| John Tinus | 8/10 | 5069 days | 2% |
| Stefanie | 8/10 | 5070 days | 2% |
| Alex | 8/10 | 5072 days | 2% |
| Fredrik Thornell | 8/10 | 5075 days | 2% |
| Siggi Wick | 9/10 | 5076 days | 2% |
| Bruce & Elaine Chote | 10/10 | 5077 days | 2% |
| Estel la Prado | 9/10 | 5079 days | 2% |
| Jeff and Carey Brown | 10/10 | 5084 days | 2% |
| LandJ | 7/10 | 5085 days | 2% |
| Katie Mitchell | 9/10 | 5085 days | 2% |
| Galamez | 9/10 | 5092 days | 2% |
| Mr & Mrs Mackie | 9/10 | 5095 days | 2% |
| Thomas Reidinger | 6/10 | 5099 days | 2% |
| G Elliason | 9/10 | 5099 days | 2% |
| Van den Borne | 9/10 | 5099 days | 2% |
| Laura Hayes | 10/10 | 5100 days | 2% |
| Brian Lind | 7/10 | 5100 days | 2% |
| Chloe Finster | 10/10 | 5100 days | 2% |
| Jol Balder | 8/10 | 5101 days | 2% |
| Robert Haidt | 10/10 | 5106 days | 2% |
| VisualDelight | 10/10 | 5328 days | 2% |
| lindam | 10/10 | 5419 days | 2% |
| Martina Pankova | 9/10 | 5425 days | 2% |
| Neal | 10/10 | 5463 days | 2% |
| Bouwma | 8/10 | 5471 days | 2% |
| Mattias Thorm | 9/10 | 5472 days | 2% |
| Erik Hummelmose | 8/10 | 5474 days | 2% |
| Ian E | 10/10 | 5474 days | 2% |
| Kane Chain | 9/10 | 5495 days | 2% |
| johnma | 10/10 | 5529 days | 2% |
| ingeh | 8/10 | 5533 days | 2% |
| Jerry | 8/10 | 5540 days | 2% |
| Decuq | 10/10 | 5551 days | 2% |
| Carl and Angela Rapihana | 8/10 | 5563 days | 2% |
| Graham Butt | 10/10 | 5563 days | 2% |
| tessac | 9/10 | 5665 days | 2% |
| andriesk | 9/10 | 5666 days | 2% |
| nickm | 10/10 | 5739 days | 2% |
| Sofie | 10/10 | 5754 days | 2% |
| streneer | 10/10 | 5771 days | 2% |
| ElleGermany | 9/10 | 5772 days | 2% |
| JonK | 9/10 | 5772 days | 2% |
| NicolaW | 10/10 | 5776 days | 2% |
| DirkGermany | 10/10 | 5779 days | 2% |
| Bridget | 10/10 | 5788 days | 2% |
| Roy | 9/10 | 5788 days | 2% |
| HenizV | 9/10 | 5793 days | 2% |
| CraigB | 10/10 | 5796 days | 2% |
| familytravellers | 7/10 | 5796 days | 2% |
| Rissmann | 10/10 | 5800 days | 2% |
| Sara Hansson | 10/10 | 5801 days | 2% |
| Frank | 9/10 | 5801 days | 2% |
| KurtL | 8/10 | 5802 days | 2% |
| SteveW | 8/10 | 5803 days | 2% |
| Peter Bowen-Simpkins | 9/10 | 5804 days | 2% |
| Joel | 9/10 | 5804 days | 2% |
| Suzie Lechner | 10/10 | 5804 days | 2% |
| KathrinS | 9/10 | 5804 days | 2% |
| Debbie | 7/10 | 5807 days | 2% |
| Stolz | 9/10 | 5807 days | 2% |
| Ulli | 9/10 | 5808 days | 2% |
| Tatjane | 8/10 | 5815 days | 2% |
| Claudia | 8/10 | 5816 days | 2% |
| SimonR | 8/10 | 5818 days | 2% |
| SonjaG | 9/10 | 5818 days | 2% |
| Steve | 7/10 | 5818 days | 2% |
| AdelineC | 8/10 | 5819 days | 2% |
| RobC1 | 7/10 | 5819 days | 2% |
| RichardB1 | 6/10 | 5819 days | 2% |
| JoT | 7/10 | 5819 days | 2% |
| Olly | 10/10 | 5820 days | 2% |
| Klaus | 9/10 | 5820 days | 2% |
| JanetH | 8/10 | 5832 days | 2% |
| StefanieW | 8/10 | 5834 days | 2% |
| schenk | 8/10 | 5834 days | 2% |
| groenewold | 7/10 | 5848 days | 2% |
| Jessy | 5/10 | 5848 days | 2% |
| Wilco | 7/10 | 5856 days | 2% |
| Bernd | 8/10 | 5857 days | 2% |
| Ruben | 8/10 | 5857 days | 2% |
| Paul | 10/10 | 5860 days | 2% |
| Loren | 10/10 | 5888 days | 2% |
| DavidO | 8/10 | 5891 days | 2% |
| Peter | 9/10 | 5896 days | 2% |
| David | 10/10 | 5897 days | 2% |
| Kylie | 8/10 | 5901 days | 2% |
| Ursula | 9/10 | 5914 days | 2% |
| Carrie | 8/10 | 5931 days | 2% |
| David | 10/10 | 5961 days | 2% |
| Howard | 9/10 | 5979 days | 2% |
| Chris | 8/10 | 6161 days | 2% |
| Anthony | 8/10 | 6164 days | 2% |
| Sandra Verbaarschot | 10/10 | 6164 days | 2% |
| Omer Harron | 10/10 | 6164 days | 2% |
| angela | 9/10 | 6167 days | 2% |
| Kerstin Brantryd | 5/10 | 6171 days | 2% |
| Sanne | 10/10 | 6177 days | 2% |
| Tessa McCormick | 9/10 | 6181 days | 2% |
| Sally and David Wallis | 10/10 | 6184 days | 2% |
| Martens | 8/10 | 6185 days | 2% |
| Dan Adamson | 9/10 | 6203 days | 2% |
| Ben | 7/10 | 6269 days | 2% |
| Kirsty Ranger | 9/10 | 6344 days | 2% |
| Andy Chapman | 8/10 | 6386 days | 2% |
| ranker_34 | 5/10 | 6386 days | 2% |
| Jo | 9/10 | 6386 days | 2% |
| Matous | 10/10 | 6505 days | 2% |
| Stefan&Gerte | 7/10 | 6508 days | 2% |
| Jenny | 9/10 | 6508 days | 2% |
| Paul Yacoumis | 8/10 | 6512 days | 2% |
| Deloraine | 7/10 | 6521 days | 2% |
| Denise Nick | 9/10 | 6523 days | 2% |
| Daniel | 10/10 | 6528 days | 2% |
| Martin Smith | 8/10 | 6531 days | 2% |
| Susan | 8/10 | 6534 days | 2% |
| sebastian | 10/10 | 6535 days | 2% |
| ranker_110 | 9/10 | 6542 days | 2% |
| Stefan | 8/10 | 6544 days | 2% |
| Svenja | 7/10 | 6549 days | 2% |
| Hirsh | 10/10 | 6554 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
-0.58% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 49 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 28 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 25 | -0.52% |
| 26 | -0.54% |
| 27 | -0.56% |
| 28 | -0.58% |
| 29 | -0.60% |
| 30 | -0.62% |
| 31 | -0.64% |
| … | … |
Balancing Adjustment
10.29% 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
75%
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.