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
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
78.80%
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 | 191 days | 100% |
| Chris Creed | 10/10 | 403 days | 94% |
| Hirash | 1/10 | 465 days | 37% |
| Kat | 1/10 | 556 days | 34% |
| Remy and Rebecca Mans | 6/10 | 3303 days | 2% |
| Jocelyn Booy | 9/10 | 3328 days | 2% |
| David Horley | 7/10 | 3342 days | 2% |
| Vallee Manon | 9/10 | 3375 days | 2% |
| Nanda Dyke | 9/10 | 3401 days | 2% |
| victor diego | 7/10 | 3419 days | 2% |
| Samuel Michalak | 10/10 | 3424 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3648 days | 1% |
| Benedikt Hang | 8/10 | 3655 days | 1% |
| Jorge Gonzoleis | 8/10 | 3658 days | 1% |
| Lauren Goebel | 10/10 | 3662 days | 1% |
| Rahel Baufeld | 8/10 | 3670 days | 1% |
| Peter Hodgson | 10/10 | 3696 days | 1% |
| doug fiddes | 10/10 | 3722 days | 1% |
| Dan Wilson | 7/10 | 3738 days | 1% |
| Corrie Medinea | 8/10 | 3746 days | 1% |
| Gracen Verheryden | 10/10 | 3749 days | 1% |
| Jennifer Hoyles | 10/10 | 3753 days | 1% |
| Lenka Korinkova | 7/10 | 4015 days | 1% |
| Rebecca Wharton | 9/10 | 4043 days | 1% |
| Andy Jobst | 8/10 | 4118 days | 1% |
| Rawiri johnston | 10/10 | 4301 days | 0% |
| Marek Heiurich | 7/10 | 4371 days | 0% |
| Matt Weston | 10/10 | 4376 days | 0% |
| Henrik Bours | 8/10 | 4377 days | 0% |
| Svenja Trubenbach | 9/10 | 4377 days | 0% |
| Sheila Galpin | 9/10 | 4391 days | 1% |
| Guillaume | 9/10 | 4402 days | 1% |
| Andreas Jung | 9/10 | 4417 days | 1% |
| Inga Memmen | 10/10 | 4419 days | 1% |
| Alacchi Moustier | 10/10 | 4434 days | 1% |
| Guy David | 9/10 | 4442 days | 1% |
| Michael Rohn | 8/10 | 4449 days | 1% |
| Rainer | 9/10 | 4733 days | 1% |
| Clarissa Hanck | 9/10 | 4733 days | 1% |
| Michael Heuer | 9/10 | 4735 days | 1% |
| Oram Salem | 6/10 | 4735 days | 1% |
| Lea Roser | 9/10 | 4744 days | 1% |
| Jitka Krejcova | 10/10 | 4744 days | 1% |
| Michal Sturma | 9/10 | 4744 days | 1% |
| Stientje van den Heuvel | 8/10 | 4744 days | 1% |
| Tom Somers | 9/10 | 4744 days | 1% |
| Brandon Wells | 8/10 | 4745 days | 1% |
| Tim Vennewold | 9/10 | 4745 days | 1% |
| Katharina | 8/10 | 4745 days | 1% |
| Lorna and Seb | 9/10 | 4761 days | 1% |
| Kristin Denny | 8/10 | 4768 days | 1% |
| Wendy Ward | 10/10 | 4774 days | 1% |
| Michal Maly | 9/10 | 4784 days | 1% |
| Michael Nolan | 10/10 | 4786 days | 1% |
| Hanneke P | 7/10 | 4817 days | 1% |
| Katharina Pape | 8/10 | 4846 days | 1% |
| Camille | 7/10 | 4853 days | 1% |
| Petr Stepanek | 10/10 | 5115 days | 1% |
| Larry Curtiss | 10/10 | 5120 days | 1% |
| nztintin | 10/10 | 5123 days | 1% |
| Marion Hassink | 7/10 | 5129 days | 1% |
| Stam | 6/10 | 5134 days | 1% |
| Ed & Katie Riches | 8/10 | 5135 days | 1% |
| Seth & Carla | 10/10 | 5137 days | 1% |
| Peter Putz | 10/10 | 5137 days | 1% |
| Tadej Ferjan | 10/10 | 5137 days | 1% |
| Nico Welagen | 10/10 | 5138 days | 1% |
| Alan Findlay | 9/10 | 5138 days | 1% |
| Andreas Kristiansen | 10/10 | 5146 days | 1% |
| Arnoldus Bergmans | 10/10 | 5218 days | 1% |
| Kai | 10/10 | 5220 days | 1% |
| Christoph | 9/10 | 5223 days | 1% |
| Jory Singer | 8/10 | 5229 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5234 days | 1% |
| Kimberly St Louis | 10/10 | 5428 days | 1% |
| Lisa Milton | 10/10 | 5451 days | 1% |
| Rob O'Neill | 10/10 | 5460 days | 1% |
| Laura Thrower | 10/10 | 5463 days | 1% |
| Ofir Avimeir | 8/10 | 5467 days | 1% |
| Zachary Steinberg | 9/10 | 5468 days | 1% |
| Brian Jones | 9/10 | 5468 days | 1% |
| Sarah and Uli Glas | 9/10 | 5469 days | 1% |
| Boi Sagarra | 8/10 | 5472 days | 1% |
| John Tinus | 8/10 | 5473 days | 1% |
| Stefanie | 8/10 | 5474 days | 1% |
| Alex | 8/10 | 5476 days | 1% |
| Fredrik Thornell | 8/10 | 5479 days | 1% |
| Siggi Wick | 9/10 | 5480 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5481 days | 1% |
| Estel la Prado | 9/10 | 5483 days | 1% |
| Jeff and Carey Brown | 10/10 | 5488 days | 1% |
| LandJ | 7/10 | 5489 days | 1% |
| Katie Mitchell | 9/10 | 5489 days | 1% |
| Galamez | 9/10 | 5496 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5499 days | 1% |
| Thomas Reidinger | 6/10 | 5503 days | 1% |
| G Elliason | 9/10 | 5503 days | 1% |
| Van den Borne | 9/10 | 5503 days | 1% |
| Laura Hayes | 10/10 | 5504 days | 1% |
| Brian Lind | 7/10 | 5504 days | 1% |
| Chloe Finster | 10/10 | 5504 days | 1% |
| Jol Balder | 8/10 | 5505 days | 1% |
| Robert Haidt | 10/10 | 5510 days | 1% |
| VisualDelight | 10/10 | 5732 days | 1% |
| lindam | 10/10 | 5823 days | 1% |
| Martina Pankova | 9/10 | 5829 days | 1% |
| Neal | 10/10 | 5867 days | 1% |
| Bouwma | 8/10 | 5875 days | 1% |
| Mattias Thorm | 9/10 | 5876 days | 1% |
| Erik Hummelmose | 8/10 | 5878 days | 1% |
| Ian E | 10/10 | 5878 days | 1% |
| Kane Chain | 9/10 | 5899 days | 1% |
| johnma | 10/10 | 5933 days | 1% |
| ingeh | 8/10 | 5937 days | 1% |
| Jerry | 8/10 | 5944 days | 1% |
| Decuq | 10/10 | 5955 days | 1% |
| Carl and Angela Rapihana | 8/10 | 5967 days | 1% |
| Graham Butt | 10/10 | 5967 days | 1% |
| tessac | 9/10 | 6069 days | 1% |
| andriesk | 9/10 | 6070 days | 1% |
| nickm | 10/10 | 6143 days | 1% |
| Sofie | 10/10 | 6158 days | 1% |
| streneer | 10/10 | 6175 days | 1% |
| ElleGermany | 9/10 | 6176 days | 1% |
| JonK | 9/10 | 6176 days | 1% |
| NicolaW | 10/10 | 6180 days | 1% |
| DirkGermany | 10/10 | 6183 days | 1% |
| Bridget | 10/10 | 6192 days | 1% |
| Roy | 9/10 | 6192 days | 1% |
| HenizV | 9/10 | 6197 days | 1% |
| CraigB | 10/10 | 6200 days | 1% |
| familytravellers | 7/10 | 6200 days | 1% |
| Rissmann | 10/10 | 6204 days | 1% |
| Sara Hansson | 10/10 | 6205 days | 1% |
| Frank | 9/10 | 6205 days | 1% |
| KurtL | 8/10 | 6206 days | 1% |
| SteveW | 8/10 | 6207 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6208 days | 1% |
| Joel | 9/10 | 6208 days | 1% |
| Suzie Lechner | 10/10 | 6208 days | 1% |
| KathrinS | 9/10 | 6208 days | 1% |
| Debbie | 7/10 | 6211 days | 1% |
| Stolz | 9/10 | 6211 days | 1% |
| Ulli | 9/10 | 6212 days | 1% |
| Tatjane | 8/10 | 6219 days | 1% |
| Claudia | 8/10 | 6220 days | 1% |
| SimonR | 8/10 | 6222 days | 1% |
| SonjaG | 9/10 | 6222 days | 1% |
| Steve | 7/10 | 6222 days | 1% |
| AdelineC | 8/10 | 6223 days | 1% |
| RobC1 | 7/10 | 6223 days | 1% |
| RichardB1 | 6/10 | 6223 days | 1% |
| JoT | 7/10 | 6223 days | 1% |
| Olly | 10/10 | 6224 days | 1% |
| Klaus | 9/10 | 6224 days | 1% |
| JanetH | 8/10 | 6236 days | 1% |
| StefanieW | 8/10 | 6238 days | 1% |
| schenk | 8/10 | 6239 days | 1% |
| groenewold | 7/10 | 6252 days | 1% |
| Jessy | 5/10 | 6253 days | 1% |
| Wilco | 7/10 | 6260 days | 1% |
| Bernd | 8/10 | 6261 days | 1% |
| Ruben | 8/10 | 6261 days | 1% |
| Paul | 10/10 | 6265 days | 1% |
| Loren | 10/10 | 6292 days | 1% |
| DavidO | 8/10 | 6295 days | 1% |
| Peter | 9/10 | 6301 days | 1% |
| David | 10/10 | 6301 days | 1% |
| Kylie | 8/10 | 6305 days | 1% |
| Ursula | 9/10 | 6318 days | 1% |
| Carrie | 8/10 | 6335 days | 1% |
| David | 10/10 | 6365 days | 1% |
| Howard | 9/10 | 6383 days | 1% |
| Chris | 8/10 | 6565 days | 1% |
| Anthony | 8/10 | 6568 days | 1% |
| Sandra Verbaarschot | 10/10 | 6568 days | 1% |
| Omer Harron | 10/10 | 6568 days | 1% |
| angela | 9/10 | 6571 days | 1% |
| Kerstin Brantryd | 5/10 | 6575 days | 1% |
| Sanne | 10/10 | 6581 days | 1% |
| Tessa McCormick | 9/10 | 6585 days | 1% |
| Sally and David Wallis | 10/10 | 6588 days | 1% |
| Martens | 8/10 | 6589 days | 1% |
| Dan Adamson | 9/10 | 6607 days | 1% |
| Ben | 7/10 | 6673 days | 1% |
| Kirsty Ranger | 9/10 | 6748 days | 1% |
| Andy Chapman | 8/10 | 6790 days | 1% |
| ranker_34 | 5/10 | 6790 days | 1% |
| Jo | 9/10 | 6790 days | 1% |
| Matous | 10/10 | 6909 days | 1% |
| Stefan&Gerte | 7/10 | 6912 days | 1% |
| Jenny | 9/10 | 6912 days | 1% |
| Paul Yacoumis | 8/10 | 6916 days | 1% |
| Deloraine | 7/10 | 6925 days | 1% |
| Denise Nick | 9/10 | 6927 days | 1% |
| Daniel | 10/10 | 6932 days | 1% |
| Martin Smith | 8/10 | 6935 days | 1% |
| Susan | 8/10 | 6938 days | 1% |
| sebastian | 10/10 | 6939 days | 1% |
| ranker_110 | 9/10 | 6946 days | 1% |
| Stefan | 8/10 | 6948 days | 1% |
| Svenja | 7/10 | 6953 days | 1% |
| Hirsh | 10/10 | 6958 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
-3.37% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 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 167 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 164 | -3.31% |
| 165 | -3.33% |
| 166 | -3.35% |
| 167 | -3.37% |
| 168 | -3.39% |
| 169 | -3.41% |
| 170 | -3.43% |
| … | … |
Balancing Adjustment
4.48% 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.