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 203 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 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
78.32%
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 | 96 days | 100% |
| Chris Creed | 10/10 | 308 days | 96% |
| Hirash | 1/10 | 370 days | 38% |
| Kat | 1/10 | 461 days | 36% |
| Remy and Rebecca Mans | 6/10 | 3208 days | 2% |
| Jocelyn Booy | 9/10 | 3233 days | 2% |
| David Horley | 7/10 | 3247 days | 2% |
| Vallee Manon | 9/10 | 3280 days | 2% |
| Nanda Dyke | 9/10 | 3306 days | 2% |
| victor diego | 7/10 | 3324 days | 2% |
| Samuel Michalak | 10/10 | 3329 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3553 days | 2% |
| Benedikt Hang | 8/10 | 3560 days | 2% |
| Jorge Gonzoleis | 8/10 | 3563 days | 2% |
| Lauren Goebel | 10/10 | 3567 days | 2% |
| Rahel Baufeld | 8/10 | 3575 days | 2% |
| Peter Hodgson | 10/10 | 3601 days | 1% |
| doug fiddes | 10/10 | 3626 days | 1% |
| Dan Wilson | 7/10 | 3643 days | 1% |
| Corrie Medinea | 8/10 | 3651 days | 1% |
| Gracen Verheryden | 10/10 | 3654 days | 1% |
| Jennifer Hoyles | 10/10 | 3658 days | 1% |
| Lenka Korinkova | 7/10 | 3920 days | 1% |
| Rebecca Wharton | 9/10 | 3948 days | 1% |
| Andy Jobst | 8/10 | 4023 days | 1% |
| Rawiri johnston | 10/10 | 4206 days | 0% |
| Marek Heiurich | 7/10 | 4276 days | 0% |
| Matt Weston | 10/10 | 4281 days | 0% |
| Henrik Bours | 8/10 | 4282 days | 0% |
| Svenja Trubenbach | 9/10 | 4282 days | 0% |
| Sheila Galpin | 9/10 | 4296 days | 0% |
| Guillaume | 9/10 | 4307 days | 0% |
| Andreas Jung | 9/10 | 4322 days | 0% |
| Inga Memmen | 10/10 | 4324 days | 0% |
| Alacchi Moustier | 10/10 | 4339 days | 0% |
| Guy David | 9/10 | 4347 days | 0% |
| Michael Rohn | 8/10 | 4354 days | 0% |
| Rainer | 9/10 | 4638 days | 1% |
| Clarissa Hanck | 9/10 | 4638 days | 1% |
| Michael Heuer | 9/10 | 4640 days | 1% |
| Oram Salem | 6/10 | 4640 days | 1% |
| Lea Roser | 9/10 | 4649 days | 1% |
| Jitka Krejcova | 10/10 | 4649 days | 1% |
| Michal Sturma | 9/10 | 4649 days | 1% |
| Stientje van den Heuvel | 8/10 | 4649 days | 1% |
| Tom Somers | 9/10 | 4649 days | 1% |
| Brandon Wells | 8/10 | 4650 days | 1% |
| Tim Vennewold | 9/10 | 4650 days | 1% |
| Katharina | 8/10 | 4650 days | 1% |
| Lorna and Seb | 9/10 | 4666 days | 1% |
| Kristin Denny | 8/10 | 4673 days | 1% |
| Wendy Ward | 10/10 | 4679 days | 1% |
| Michal Maly | 9/10 | 4689 days | 1% |
| Michael Nolan | 10/10 | 4691 days | 1% |
| Hanneke P | 7/10 | 4722 days | 1% |
| Katharina Pape | 8/10 | 4751 days | 1% |
| Camille | 7/10 | 4758 days | 1% |
| Petr Stepanek | 10/10 | 5020 days | 1% |
| Larry Curtiss | 10/10 | 5025 days | 1% |
| nztintin | 10/10 | 5028 days | 1% |
| Marion Hassink | 7/10 | 5034 days | 1% |
| Stam | 6/10 | 5039 days | 1% |
| Ed & Katie Riches | 8/10 | 5040 days | 1% |
| Seth & Carla | 10/10 | 5042 days | 1% |
| Peter Putz | 10/10 | 5042 days | 1% |
| Tadej Ferjan | 10/10 | 5042 days | 1% |
| Nico Welagen | 10/10 | 5043 days | 1% |
| Alan Findlay | 9/10 | 5043 days | 1% |
| Andreas Kristiansen | 10/10 | 5051 days | 1% |
| Arnoldus Bergmans | 10/10 | 5123 days | 1% |
| Kai | 10/10 | 5125 days | 1% |
| Christoph | 9/10 | 5128 days | 1% |
| Jory Singer | 8/10 | 5134 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5139 days | 1% |
| Kimberly St Louis | 10/10 | 5333 days | 1% |
| Lisa Milton | 10/10 | 5356 days | 1% |
| Rob O'Neill | 10/10 | 5365 days | 1% |
| Laura Thrower | 10/10 | 5368 days | 1% |
| Ofir Avimeir | 8/10 | 5372 days | 1% |
| Zachary Steinberg | 9/10 | 5373 days | 1% |
| Brian Jones | 9/10 | 5373 days | 1% |
| Sarah and Uli Glas | 9/10 | 5374 days | 1% |
| Boi Sagarra | 8/10 | 5377 days | 1% |
| John Tinus | 8/10 | 5378 days | 1% |
| Stefanie | 8/10 | 5379 days | 1% |
| Alex | 8/10 | 5381 days | 1% |
| Fredrik Thornell | 8/10 | 5384 days | 1% |
| Siggi Wick | 9/10 | 5385 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5386 days | 1% |
| Estel la Prado | 9/10 | 5388 days | 1% |
| Jeff and Carey Brown | 10/10 | 5393 days | 1% |
| LandJ | 7/10 | 5394 days | 1% |
| Katie Mitchell | 9/10 | 5394 days | 1% |
| Galamez | 9/10 | 5401 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5404 days | 1% |
| Thomas Reidinger | 6/10 | 5408 days | 1% |
| G Elliason | 9/10 | 5408 days | 1% |
| Van den Borne | 9/10 | 5408 days | 1% |
| Laura Hayes | 10/10 | 5409 days | 1% |
| Brian Lind | 7/10 | 5409 days | 1% |
| Chloe Finster | 10/10 | 5409 days | 1% |
| Jol Balder | 8/10 | 5410 days | 1% |
| Robert Haidt | 10/10 | 5415 days | 1% |
| VisualDelight | 10/10 | 5637 days | 1% |
| lindam | 10/10 | 5728 days | 1% |
| Martina Pankova | 9/10 | 5734 days | 1% |
| Neal | 10/10 | 5772 days | 1% |
| Bouwma | 8/10 | 5780 days | 1% |
| Mattias Thorm | 9/10 | 5781 days | 1% |
| Erik Hummelmose | 8/10 | 5783 days | 1% |
| Ian E | 10/10 | 5783 days | 1% |
| Kane Chain | 9/10 | 5804 days | 1% |
| johnma | 10/10 | 5838 days | 1% |
| ingeh | 8/10 | 5842 days | 1% |
| Jerry | 8/10 | 5849 days | 1% |
| Decuq | 10/10 | 5860 days | 1% |
| Carl and Angela Rapihana | 8/10 | 5872 days | 1% |
| Graham Butt | 10/10 | 5872 days | 1% |
| tessac | 9/10 | 5974 days | 1% |
| andriesk | 9/10 | 5975 days | 1% |
| nickm | 10/10 | 6048 days | 1% |
| Sofie | 10/10 | 6063 days | 1% |
| streneer | 10/10 | 6080 days | 1% |
| ElleGermany | 9/10 | 6081 days | 1% |
| JonK | 9/10 | 6081 days | 1% |
| NicolaW | 10/10 | 6085 days | 1% |
| DirkGermany | 10/10 | 6088 days | 1% |
| Bridget | 10/10 | 6097 days | 1% |
| Roy | 9/10 | 6097 days | 1% |
| HenizV | 9/10 | 6102 days | 1% |
| CraigB | 10/10 | 6105 days | 1% |
| familytravellers | 7/10 | 6105 days | 1% |
| Rissmann | 10/10 | 6109 days | 1% |
| Sara Hansson | 10/10 | 6110 days | 1% |
| Frank | 9/10 | 6110 days | 1% |
| KurtL | 8/10 | 6111 days | 1% |
| SteveW | 8/10 | 6112 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6113 days | 1% |
| Joel | 9/10 | 6113 days | 1% |
| Suzie Lechner | 10/10 | 6113 days | 1% |
| KathrinS | 9/10 | 6113 days | 1% |
| Debbie | 7/10 | 6116 days | 1% |
| Stolz | 9/10 | 6116 days | 1% |
| Ulli | 9/10 | 6117 days | 1% |
| Tatjane | 8/10 | 6124 days | 1% |
| Claudia | 8/10 | 6125 days | 1% |
| SimonR | 8/10 | 6127 days | 1% |
| SonjaG | 9/10 | 6127 days | 1% |
| Steve | 7/10 | 6127 days | 1% |
| AdelineC | 8/10 | 6128 days | 1% |
| RobC1 | 7/10 | 6128 days | 1% |
| RichardB1 | 6/10 | 6128 days | 1% |
| JoT | 7/10 | 6128 days | 1% |
| Olly | 10/10 | 6129 days | 1% |
| Klaus | 9/10 | 6129 days | 1% |
| JanetH | 8/10 | 6141 days | 1% |
| StefanieW | 8/10 | 6143 days | 1% |
| schenk | 8/10 | 6143 days | 1% |
| groenewold | 7/10 | 6157 days | 1% |
| Jessy | 5/10 | 6157 days | 1% |
| Wilco | 7/10 | 6165 days | 1% |
| Bernd | 8/10 | 6166 days | 1% |
| Ruben | 8/10 | 6166 days | 1% |
| Paul | 10/10 | 6169 days | 1% |
| Loren | 10/10 | 6197 days | 1% |
| DavidO | 8/10 | 6200 days | 1% |
| Peter | 9/10 | 6205 days | 1% |
| David | 10/10 | 6206 days | 1% |
| Kylie | 8/10 | 6210 days | 1% |
| Ursula | 9/10 | 6223 days | 1% |
| Carrie | 8/10 | 6240 days | 1% |
| David | 10/10 | 6270 days | 1% |
| Howard | 9/10 | 6288 days | 1% |
| Chris | 8/10 | 6470 days | 1% |
| Anthony | 8/10 | 6473 days | 1% |
| Sandra Verbaarschot | 10/10 | 6473 days | 1% |
| Omer Harron | 10/10 | 6473 days | 1% |
| angela | 9/10 | 6476 days | 1% |
| Kerstin Brantryd | 5/10 | 6480 days | 1% |
| Sanne | 10/10 | 6486 days | 1% |
| Tessa McCormick | 9/10 | 6490 days | 1% |
| Sally and David Wallis | 10/10 | 6493 days | 1% |
| Martens | 8/10 | 6494 days | 1% |
| Dan Adamson | 9/10 | 6512 days | 1% |
| Ben | 7/10 | 6578 days | 1% |
| Kirsty Ranger | 9/10 | 6653 days | 1% |
| Andy Chapman | 8/10 | 6695 days | 1% |
| ranker_34 | 5/10 | 6695 days | 1% |
| Jo | 9/10 | 6695 days | 1% |
| Matous | 10/10 | 6814 days | 1% |
| Stefan&Gerte | 7/10 | 6817 days | 1% |
| Jenny | 9/10 | 6817 days | 1% |
| Paul Yacoumis | 8/10 | 6821 days | 1% |
| Deloraine | 7/10 | 6830 days | 1% |
| Denise Nick | 9/10 | 6832 days | 1% |
| Daniel | 10/10 | 6837 days | 1% |
| Martin Smith | 8/10 | 6840 days | 1% |
| Susan | 8/10 | 6843 days | 1% |
| sebastian | 10/10 | 6844 days | 1% |
| ranker_110 | 9/10 | 6851 days | 1% |
| Stefan | 8/10 | 6853 days | 1% |
| Svenja | 7/10 | 6858 days | 1% |
| Hirsh | 10/10 | 6863 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
-1.47% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 72 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 69 | -1.41% |
| 70 | -1.43% |
| 71 | -1.45% |
| 72 | -1.47% |
| 73 | -1.49% |
| 74 | -1.51% |
| 75 | -1.53% |
| … | … |
Balancing Adjustment
3.97% 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
81%
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.