Hey, 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 Hole in the Rock Cruise.
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.
Hole in the Rock Cruise
Valid Reviews
114 Valid Reviews
The Hole in the Rock Cruise experience has a total of 115 reviews. There are 114 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 114 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 21 |
|
18% |
| 9/10 | 28 |
|
25% |
| 8/10 | 39 |
|
34% |
| 7/10 | 16 |
|
14% |
| 6/10 | 5 |
|
4% |
| 5/10 | 2 |
|
2% |
| 4/10 | 2 |
|
2% |
| 3/10 | 0 |
|
0% |
| 2/10 | 1 |
|
1% |
| 1/10 | 0 |
|
0% |
82.11% Average
The raw data average (mean) for all the Hole in the Rock Cruise valid reviews is 82.11% and is based on 114 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
109 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 114 valid reviews, the experience has 109 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 109 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 20 |
|
18% |
| 9/10 | 27 |
|
25% |
| 8/10 | 38 |
|
35% |
| 7/10 | 15 |
|
14% |
| 6/10 | 4 |
|
4% |
| 5/10 | 2 |
|
2% |
| 4/10 | 2 |
|
2% |
| 3/10 | 0 |
|
0% |
| 2/10 | 1 |
|
1% |
| 1/10 | 0 |
|
0% |
82.20% Average
The raw data average (mean) for all the Hole in the Rock Cruise face-to-face reviews is 82.20% and is based on 109 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
83.10%
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 |
|---|---|---|---|
| Alexandra Luerner | 10/10 | 3304 days | 100% |
| Magali Schwantke | 10/10 | 3562 days | 76% |
| Hana Rachfalik | 9/10 | 3570 days | 74% |
| Liam Bates | 10/10 | 3581 days | 74% |
| Rahel Baufeld | 8/10 | 3587 days | 72% |
| Lea Behnem | 8/10 | 3591 days | 72% |
| Marlene Goecke | 9/10 | 3598 days | 72% |
| Felix Sternke | 7/10 | 3609 days | 67% |
| Timon Streicher | 10/10 | 3624 days | 70% |
| Suzanne Vermeulen | 7/10 | 3730 days | 56% |
| Kristina Farkas | 10/10 | 3960 days | 39% |
| Martha Taatz | 10/10 | 3979 days | 37% |
| Sibylle and Nadine | 8/10 | 4026 days | 32% |
| Hadler | 9/10 | 4311 days | 6% |
| Christine Helleiner | 10/10 | 4311 days | 6% |
| Ian Garner | 10/10 | 4323 days | 5% |
| Dieter Hirsch | 8/10 | 4375 days | 0% |
| Ken S | 10/10 | 4400 days | 47% |
| Katrina Gamby | 9/10 | 4687 days | 47% |
| Peter Moederer | 8/10 | 4692 days | 46% |
| Dick Kooij | 8/10 | 4747 days | 46% |
| Tony Hines | 8/10 | 4751 days | 46% |
| Hans | 8/10 | 4755 days | 46% |
| Urs Zuercher | 9/10 | 4770 days | 47% |
| Judy | 9/10 | 4774 days | 47% |
| Stevie | 8/10 | 4777 days | 46% |
| Thys | 8/10 | 4777 days | 46% |
| Adrian Weidell | 7/10 | 4970 days | 44% |
| Peter Kent | 10/10 | 5027 days | 47% |
| Helmut Schmid | 9/10 | 5034 days | 47% |
| V deLeeuw | 9/10 | 5036 days | 47% |
| Roy Barton | 9/10 | 5037 days | 47% |
| M H Hansen | 8/10 | 5052 days | 46% |
| Sabine | 9/10 | 5052 days | 47% |
| A Sorg | 10/10 | 5061 days | 47% |
| Leander Siegert | 8/10 | 5067 days | 46% |
| John & Myra Sloan | 9/10 | 5140 days | 47% |
| Andy Lever | 9/10 | 5146 days | 47% |
| Marianne Wheatley | 8/10 | 5394 days | 46% |
| Aimee Pollett | 9/10 | 5396 days | 47% |
| Tina Baun | 8/10 | 5398 days | 46% |
| Julia Hofstetter | 6/10 | 5399 days | 41% |
| Scheauwen | 4/10 | 5404 days | 31% |
| Shirley | 8/10 | 5404 days | 46% |
| Henrik Mundbuerg | 10/10 | 5410 days | 47% |
| Mike and Sue Clark | 2/10 | 5412 days | 21% |
| Dave and Emma | 7/10 | 5422 days | 44% |
| Rosey834 | 8/10 | 5496 days | 46% |
| David | 7/10 | 5704 days | 44% |
| kempt | 6/10 | 5710 days | 41% |
| Russ Turner | 9/10 | 5757 days | 47% |
| Remro | 8/10 | 5759 days | 46% |
| Rob & Anne | 9/10 | 5764 days | 47% |
| Pam Know | 8/10 | 5766 days | 46% |
| Gunda G | 10/10 | 5779 days | 47% |
| Denecke Thorsten | 8/10 | 5780 days | 46% |
| Jakob Pedersen | 9/10 | 5781 days | 47% |
| Lynn Tichauer | 7/10 | 5782 days | 44% |
| Malcolm Glad | 7/10 | 5784 days | 44% |
| Mathias Skov | 7/10 | 5785 days | 44% |
| Mick Thexton | 9/10 | 5794 days | 47% |
| Torsten Gehrke | 5/10 | 5816 days | 36% |
| Werner Swiss | 10/10 | 5821 days | 47% |
| gemmav | 8/10 | 5845 days | 46% |
| nadinef | 9/10 | 5853 days | 47% |
| Anne Ford | 8/10 | 5863 days | 46% |
| Lothar Riedmann | 7/10 | 5863 days | 44% |
| Sibylle Locher | 8/10 | 5869 days | 46% |
| Mike | 8/10 | 5873 days | 46% |
| godineau | 8/10 | 5987 days | 46% |
| katesh | 10/10 | 6060 days | 47% |
| CeesVanW | 9/10 | 6105 days | 47% |
| arthurwa | 10/10 | 6105 days | 47% |
| Jake1 | 7/10 | 6107 days | 44% |
| Peter Jackie | 9/10 | 6108 days | 47% |
| Gerd Hebbel | 8/10 | 6121 days | 46% |
| HeideS | 9/10 | 6124 days | 47% |
| Kate | 8/10 | 6128 days | 46% |
| Keith | 8/10 | 6129 days | 46% |
| ChristopherD | 9/10 | 6139 days | 47% |
| Green | 8/10 | 6145 days | 46% |
| Philip | 7/10 | 6154 days | 44% |
| Katy | 4/10 | 6155 days | 31% |
| Andrew | 8/10 | 6155 days | 46% |
| Nikolaj | 7/10 | 6155 days | 44% |
| KuntzGermany | 10/10 | 6160 days | 47% |
| Klalis | 8/10 | 6161 days | 46% |
| MartinD | 7/10 | 6163 days | 44% |
| Van Dam | 10/10 | 6167 days | 47% |
| Hans | 7/10 | 6177 days | 44% |
| Johann | 10/10 | 6181 days | 47% |
| Lynne | 9/10 | 6218 days | 47% |
| Heidi | 8/10 | 6220 days | 46% |
| Liz | 8/10 | 6244 days | 46% |
| Louise | 8/10 | 6269 days | 46% |
| Rosseel | 8/10 | 6271 days | 46% |
| teamaustria | 6/10 | 6294 days | 41% |
| Dave | 5/10 | 6295 days | 36% |
| Rebecca Smith | 9/10 | 6320 days | 47% |
| Daniela | 8/10 | 6484 days | 46% |
| Hoetnagels | 6/10 | 6488 days | 41% |
| Leo | 9/10 | 6497 days | 47% |
| Amanda | 6/10 | 6503 days | 41% |
| Sally and David Wallis | 10/10 | 6505 days | 47% |
| Roger & Margaret | 8/10 | 6519 days | 46% |
| Meiki | 9/10 | 6552 days | 47% |
| Dave | 8/10 | 6835 days | 46% |
| Beth | 10/10 | 6842 days | 47% |
| Frederik | 9/10 | 6859 days | 47% |
| Lucy | 7/10 | 6868 days | 44% |
| Jasper | 8/10 | 6870 days | 46% |
| Fiona | 8/10 | 6881 days | 46% |
| Gordon | 9/10 | 6882 days | 47% |
| Harrison | 7/10 | 6883 days | 44% |
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 Hole in the Rock Cruise experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.05% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 days. However the Hole in the Rock Cruise 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 Hole in the Rock Cruise experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -3.99% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 201 | -4.07% |
| 202 | -4.09% |
| 203 | -4.11% |
| … | … |
Balancing Adjustment
3.27% 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
82%
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.