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 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 | 97 days | 100% |
| Chris Creed | 10/10 | 309 days | 96% |
| Hirash | 1/10 | 371 days | 38% |
| Kat | 1/10 | 462 days | 36% |
| Remy and Rebecca Mans | 6/10 | 3209 days | 2% |
| Jocelyn Booy | 9/10 | 3234 days | 2% |
| David Horley | 7/10 | 3248 days | 2% |
| Vallee Manon | 9/10 | 3281 days | 2% |
| Nanda Dyke | 9/10 | 3307 days | 2% |
| victor diego | 7/10 | 3325 days | 2% |
| Samuel Michalak | 10/10 | 3330 days | 2% |
| Laura Munguira Vadillo | 10/10 | 3554 days | 2% |
| Benedikt Hang | 8/10 | 3561 days | 2% |
| Jorge Gonzoleis | 8/10 | 3564 days | 2% |
| Lauren Goebel | 10/10 | 3568 days | 2% |
| Rahel Baufeld | 8/10 | 3576 days | 2% |
| Peter Hodgson | 10/10 | 3602 days | 1% |
| doug fiddes | 10/10 | 3628 days | 1% |
| Dan Wilson | 7/10 | 3644 days | 1% |
| Corrie Medinea | 8/10 | 3652 days | 1% |
| Gracen Verheryden | 10/10 | 3655 days | 1% |
| Jennifer Hoyles | 10/10 | 3659 days | 1% |
| Lenka Korinkova | 7/10 | 3921 days | 1% |
| Rebecca Wharton | 9/10 | 3949 days | 1% |
| Andy Jobst | 8/10 | 4024 days | 1% |
| Rawiri johnston | 10/10 | 4207 days | 0% |
| Marek Heiurich | 7/10 | 4277 days | 0% |
| Matt Weston | 10/10 | 4282 days | 0% |
| Henrik Bours | 8/10 | 4283 days | 0% |
| Svenja Trubenbach | 9/10 | 4283 days | 0% |
| Sheila Galpin | 9/10 | 4297 days | 0% |
| Guillaume | 9/10 | 4308 days | 0% |
| Andreas Jung | 9/10 | 4323 days | 0% |
| Inga Memmen | 10/10 | 4325 days | 0% |
| Alacchi Moustier | 10/10 | 4340 days | 0% |
| Guy David | 9/10 | 4348 days | 0% |
| Michael Rohn | 8/10 | 4355 days | 0% |
| Rainer | 9/10 | 4639 days | 1% |
| Clarissa Hanck | 9/10 | 4639 days | 1% |
| Michael Heuer | 9/10 | 4641 days | 1% |
| Oram Salem | 6/10 | 4641 days | 1% |
| Lea Roser | 9/10 | 4650 days | 1% |
| Jitka Krejcova | 10/10 | 4650 days | 1% |
| Michal Sturma | 9/10 | 4650 days | 1% |
| Stientje van den Heuvel | 8/10 | 4650 days | 1% |
| Tom Somers | 9/10 | 4650 days | 1% |
| Brandon Wells | 8/10 | 4651 days | 1% |
| Tim Vennewold | 9/10 | 4651 days | 1% |
| Katharina | 8/10 | 4651 days | 1% |
| Lorna and Seb | 9/10 | 4667 days | 1% |
| Kristin Denny | 8/10 | 4674 days | 1% |
| Wendy Ward | 10/10 | 4680 days | 1% |
| Michal Maly | 9/10 | 4690 days | 1% |
| Michael Nolan | 10/10 | 4692 days | 1% |
| Hanneke P | 7/10 | 4723 days | 1% |
| Katharina Pape | 8/10 | 4752 days | 1% |
| Camille | 7/10 | 4759 days | 1% |
| Petr Stepanek | 10/10 | 5021 days | 1% |
| Larry Curtiss | 10/10 | 5026 days | 1% |
| nztintin | 10/10 | 5029 days | 1% |
| Marion Hassink | 7/10 | 5035 days | 1% |
| Stam | 6/10 | 5040 days | 1% |
| Ed & Katie Riches | 8/10 | 5041 days | 1% |
| Seth & Carla | 10/10 | 5043 days | 1% |
| Peter Putz | 10/10 | 5043 days | 1% |
| Tadej Ferjan | 10/10 | 5043 days | 1% |
| Nico Welagen | 10/10 | 5044 days | 1% |
| Alan Findlay | 9/10 | 5044 days | 1% |
| Andreas Kristiansen | 10/10 | 5052 days | 1% |
| Arnoldus Bergmans | 10/10 | 5124 days | 1% |
| Kai | 10/10 | 5126 days | 1% |
| Christoph | 9/10 | 5129 days | 1% |
| Jory Singer | 8/10 | 5135 days | 1% |
| Scott & Madeleine Bancroft | 9/10 | 5140 days | 1% |
| Kimberly St Louis | 10/10 | 5334 days | 1% |
| Lisa Milton | 10/10 | 5357 days | 1% |
| Rob O'Neill | 10/10 | 5366 days | 1% |
| Laura Thrower | 10/10 | 5369 days | 1% |
| Ofir Avimeir | 8/10 | 5373 days | 1% |
| Zachary Steinberg | 9/10 | 5374 days | 1% |
| Brian Jones | 9/10 | 5374 days | 1% |
| Sarah and Uli Glas | 9/10 | 5375 days | 1% |
| Boi Sagarra | 8/10 | 5378 days | 1% |
| John Tinus | 8/10 | 5379 days | 1% |
| Stefanie | 8/10 | 5380 days | 1% |
| Alex | 8/10 | 5382 days | 1% |
| Fredrik Thornell | 8/10 | 5385 days | 1% |
| Siggi Wick | 9/10 | 5386 days | 1% |
| Bruce & Elaine Chote | 10/10 | 5387 days | 1% |
| Estel la Prado | 9/10 | 5389 days | 1% |
| Jeff and Carey Brown | 10/10 | 5394 days | 1% |
| LandJ | 7/10 | 5395 days | 1% |
| Katie Mitchell | 9/10 | 5395 days | 1% |
| Galamez | 9/10 | 5402 days | 1% |
| Mr & Mrs Mackie | 9/10 | 5405 days | 1% |
| Thomas Reidinger | 6/10 | 5409 days | 1% |
| G Elliason | 9/10 | 5409 days | 1% |
| Van den Borne | 9/10 | 5409 days | 1% |
| Laura Hayes | 10/10 | 5410 days | 1% |
| Brian Lind | 7/10 | 5410 days | 1% |
| Chloe Finster | 10/10 | 5410 days | 1% |
| Jol Balder | 8/10 | 5411 days | 1% |
| Robert Haidt | 10/10 | 5416 days | 1% |
| VisualDelight | 10/10 | 5638 days | 1% |
| lindam | 10/10 | 5729 days | 1% |
| Martina Pankova | 9/10 | 5735 days | 1% |
| Neal | 10/10 | 5773 days | 1% |
| Bouwma | 8/10 | 5781 days | 1% |
| Mattias Thorm | 9/10 | 5782 days | 1% |
| Erik Hummelmose | 8/10 | 5784 days | 1% |
| Ian E | 10/10 | 5784 days | 1% |
| Kane Chain | 9/10 | 5805 days | 1% |
| johnma | 10/10 | 5839 days | 1% |
| ingeh | 8/10 | 5843 days | 1% |
| Jerry | 8/10 | 5850 days | 1% |
| Decuq | 10/10 | 5861 days | 1% |
| Carl and Angela Rapihana | 8/10 | 5873 days | 1% |
| Graham Butt | 10/10 | 5873 days | 1% |
| tessac | 9/10 | 5975 days | 1% |
| andriesk | 9/10 | 5976 days | 1% |
| nickm | 10/10 | 6049 days | 1% |
| Sofie | 10/10 | 6064 days | 1% |
| streneer | 10/10 | 6081 days | 1% |
| ElleGermany | 9/10 | 6082 days | 1% |
| JonK | 9/10 | 6082 days | 1% |
| NicolaW | 10/10 | 6086 days | 1% |
| DirkGermany | 10/10 | 6089 days | 1% |
| Bridget | 10/10 | 6098 days | 1% |
| Roy | 9/10 | 6098 days | 1% |
| HenizV | 9/10 | 6104 days | 1% |
| CraigB | 10/10 | 6106 days | 1% |
| familytravellers | 7/10 | 6106 days | 1% |
| Rissmann | 10/10 | 6110 days | 1% |
| Sara Hansson | 10/10 | 6111 days | 1% |
| Frank | 9/10 | 6112 days | 1% |
| KurtL | 8/10 | 6112 days | 1% |
| SteveW | 8/10 | 6113 days | 1% |
| Peter Bowen-Simpkins | 9/10 | 6114 days | 1% |
| Joel | 9/10 | 6114 days | 1% |
| Suzie Lechner | 10/10 | 6114 days | 1% |
| KathrinS | 9/10 | 6114 days | 1% |
| Debbie | 7/10 | 6118 days | 1% |
| Stolz | 9/10 | 6118 days | 1% |
| Ulli | 9/10 | 6118 days | 1% |
| Tatjane | 8/10 | 6126 days | 1% |
| Claudia | 8/10 | 6126 days | 1% |
| SimonR | 8/10 | 6128 days | 1% |
| SonjaG | 9/10 | 6128 days | 1% |
| Steve | 7/10 | 6128 days | 1% |
| AdelineC | 8/10 | 6129 days | 1% |
| RobC1 | 7/10 | 6129 days | 1% |
| RichardB1 | 6/10 | 6129 days | 1% |
| JoT | 7/10 | 6129 days | 1% |
| Olly | 10/10 | 6130 days | 1% |
| Klaus | 9/10 | 6131 days | 1% |
| JanetH | 8/10 | 6142 days | 1% |
| StefanieW | 8/10 | 6144 days | 1% |
| schenk | 8/10 | 6145 days | 1% |
| groenewold | 7/10 | 6159 days | 1% |
| Jessy | 5/10 | 6159 days | 1% |
| Wilco | 7/10 | 6166 days | 1% |
| Bernd | 8/10 | 6167 days | 1% |
| Ruben | 8/10 | 6167 days | 1% |
| Paul | 10/10 | 6171 days | 1% |
| Loren | 10/10 | 6198 days | 1% |
| DavidO | 8/10 | 6201 days | 1% |
| Peter | 9/10 | 6207 days | 1% |
| David | 10/10 | 6208 days | 1% |
| Kylie | 8/10 | 6211 days | 1% |
| Ursula | 9/10 | 6225 days | 1% |
| Carrie | 8/10 | 6241 days | 1% |
| David | 10/10 | 6272 days | 1% |
| Howard | 9/10 | 6290 days | 1% |
| Chris | 8/10 | 6471 days | 1% |
| Anthony | 8/10 | 6474 days | 1% |
| Sandra Verbaarschot | 10/10 | 6474 days | 1% |
| Omer Harron | 10/10 | 6474 days | 1% |
| angela | 9/10 | 6477 days | 1% |
| Kerstin Brantryd | 5/10 | 6481 days | 1% |
| Sanne | 10/10 | 6487 days | 1% |
| Tessa McCormick | 9/10 | 6491 days | 1% |
| Sally and David Wallis | 10/10 | 6494 days | 1% |
| Martens | 8/10 | 6495 days | 1% |
| Dan Adamson | 9/10 | 6513 days | 1% |
| Ben | 7/10 | 6579 days | 1% |
| Kirsty Ranger | 9/10 | 6654 days | 1% |
| Andy Chapman | 8/10 | 6696 days | 1% |
| ranker_34 | 5/10 | 6696 days | 1% |
| Jo | 9/10 | 6696 days | 1% |
| Matous | 10/10 | 6815 days | 1% |
| Stefan&Gerte | 7/10 | 6818 days | 1% |
| Jenny | 9/10 | 6818 days | 1% |
| Paul Yacoumis | 8/10 | 6822 days | 1% |
| Deloraine | 7/10 | 6831 days | 1% |
| Denise Nick | 9/10 | 6833 days | 1% |
| Daniel | 10/10 | 6838 days | 1% |
| Martin Smith | 8/10 | 6841 days | 1% |
| Susan | 8/10 | 6844 days | 1% |
| sebastian | 10/10 | 6845 days | 1% |
| ranker_110 | 9/10 | 6852 days | 1% |
| Stefan | 8/10 | 6854 days | 1% |
| Svenja | 7/10 | 6859 days | 1% |
| Hirsh | 10/10 | 6864 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
-1.49% 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 73 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 70 | -1.43% |
| 71 | -1.45% |
| 72 | -1.47% |
| 73 | -1.49% |
| 74 | -1.51% |
| 75 | -1.53% |
| 76 | -1.55% |
| … | … |
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.