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 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 | 3306 days | 100% |
| Magali Schwantke | 10/10 | 3564 days | 76% |
| Hana Rachfalik | 9/10 | 3572 days | 74% |
| Liam Bates | 10/10 | 3583 days | 74% |
| Rahel Baufeld | 8/10 | 3589 days | 72% |
| Lea Behnem | 8/10 | 3593 days | 72% |
| Marlene Goecke | 9/10 | 3600 days | 72% |
| Felix Sternke | 7/10 | 3611 days | 67% |
| Timon Streicher | 10/10 | 3626 days | 70% |
| Suzanne Vermeulen | 7/10 | 3733 days | 56% |
| Kristina Farkas | 10/10 | 3962 days | 39% |
| Martha Taatz | 10/10 | 3981 days | 37% |
| Sibylle and Nadine | 8/10 | 4028 days | 32% |
| Hadler | 9/10 | 4313 days | 6% |
| Christine Helleiner | 10/10 | 4313 days | 6% |
| Ian Garner | 10/10 | 4325 days | 5% |
| Dieter Hirsch | 8/10 | 4377 days | 0% |
| Ken S | 10/10 | 4402 days | 47% |
| Katrina Gamby | 9/10 | 4689 days | 47% |
| Peter Moederer | 8/10 | 4694 days | 46% |
| Dick Kooij | 8/10 | 4749 days | 46% |
| Tony Hines | 8/10 | 4753 days | 46% |
| Hans | 8/10 | 4757 days | 46% |
| Urs Zuercher | 9/10 | 4772 days | 47% |
| Judy | 9/10 | 4776 days | 47% |
| Stevie | 8/10 | 4779 days | 46% |
| Thys | 8/10 | 4779 days | 46% |
| Adrian Weidell | 7/10 | 4972 days | 44% |
| Peter Kent | 10/10 | 5029 days | 47% |
| Helmut Schmid | 9/10 | 5036 days | 47% |
| V deLeeuw | 9/10 | 5038 days | 47% |
| Roy Barton | 9/10 | 5039 days | 47% |
| M H Hansen | 8/10 | 5054 days | 46% |
| Sabine | 9/10 | 5054 days | 47% |
| A Sorg | 10/10 | 5063 days | 47% |
| Leander Siegert | 8/10 | 5069 days | 46% |
| John & Myra Sloan | 9/10 | 5142 days | 47% |
| Andy Lever | 9/10 | 5148 days | 47% |
| Marianne Wheatley | 8/10 | 5396 days | 46% |
| Aimee Pollett | 9/10 | 5398 days | 47% |
| Tina Baun | 8/10 | 5400 days | 46% |
| Julia Hofstetter | 6/10 | 5401 days | 41% |
| Scheauwen | 4/10 | 5406 days | 31% |
| Shirley | 8/10 | 5406 days | 46% |
| Henrik Mundbuerg | 10/10 | 5412 days | 47% |
| Mike and Sue Clark | 2/10 | 5414 days | 21% |
| Dave and Emma | 7/10 | 5424 days | 44% |
| Rosey834 | 8/10 | 5498 days | 46% |
| David | 7/10 | 5706 days | 44% |
| kempt | 6/10 | 5712 days | 41% |
| Russ Turner | 9/10 | 5759 days | 47% |
| Remro | 8/10 | 5761 days | 46% |
| Rob & Anne | 9/10 | 5766 days | 47% |
| Pam Know | 8/10 | 5768 days | 46% |
| Gunda G | 10/10 | 5781 days | 47% |
| Denecke Thorsten | 8/10 | 5782 days | 46% |
| Jakob Pedersen | 9/10 | 5783 days | 47% |
| Lynn Tichauer | 7/10 | 5784 days | 44% |
| Malcolm Glad | 7/10 | 5786 days | 44% |
| Mathias Skov | 7/10 | 5787 days | 44% |
| Mick Thexton | 9/10 | 5796 days | 47% |
| Torsten Gehrke | 5/10 | 5818 days | 36% |
| Werner Swiss | 10/10 | 5823 days | 47% |
| gemmav | 8/10 | 5847 days | 46% |
| nadinef | 9/10 | 5855 days | 47% |
| Anne Ford | 8/10 | 5865 days | 46% |
| Lothar Riedmann | 7/10 | 5865 days | 44% |
| Sibylle Locher | 8/10 | 5871 days | 46% |
| Mike | 8/10 | 5875 days | 46% |
| godineau | 8/10 | 5989 days | 46% |
| katesh | 10/10 | 6062 days | 47% |
| CeesVanW | 9/10 | 6107 days | 47% |
| arthurwa | 10/10 | 6107 days | 47% |
| Jake1 | 7/10 | 6109 days | 44% |
| Peter Jackie | 9/10 | 6110 days | 47% |
| Gerd Hebbel | 8/10 | 6123 days | 46% |
| HeideS | 9/10 | 6126 days | 47% |
| Kate | 8/10 | 6131 days | 46% |
| Keith | 8/10 | 6132 days | 46% |
| ChristopherD | 9/10 | 6141 days | 47% |
| Green | 8/10 | 6148 days | 46% |
| Philip | 7/10 | 6156 days | 44% |
| Katy | 4/10 | 6158 days | 31% |
| Andrew | 8/10 | 6158 days | 46% |
| Nikolaj | 7/10 | 6158 days | 44% |
| KuntzGermany | 10/10 | 6162 days | 47% |
| Klalis | 8/10 | 6164 days | 46% |
| MartinD | 7/10 | 6165 days | 44% |
| Van Dam | 10/10 | 6170 days | 47% |
| Hans | 7/10 | 6180 days | 44% |
| Johann | 10/10 | 6184 days | 47% |
| Lynne | 9/10 | 6221 days | 47% |
| Heidi | 8/10 | 6222 days | 46% |
| Liz | 8/10 | 6247 days | 46% |
| Louise | 8/10 | 6271 days | 46% |
| Rosseel | 8/10 | 6273 days | 46% |
| teamaustria | 6/10 | 6297 days | 41% |
| Dave | 5/10 | 6298 days | 36% |
| Rebecca Smith | 9/10 | 6323 days | 47% |
| Daniela | 8/10 | 6486 days | 46% |
| Hoetnagels | 6/10 | 6490 days | 41% |
| Leo | 9/10 | 6499 days | 47% |
| Amanda | 6/10 | 6505 days | 41% |
| Sally and David Wallis | 10/10 | 6507 days | 47% |
| Roger & Margaret | 8/10 | 6521 days | 46% |
| Meiki | 9/10 | 6554 days | 47% |
| Dave | 8/10 | 6837 days | 46% |
| Beth | 10/10 | 6844 days | 47% |
| Frederik | 9/10 | 6861 days | 47% |
| Lucy | 7/10 | 6870 days | 44% |
| Jasper | 8/10 | 6872 days | 46% |
| Fiona | 8/10 | 6883 days | 46% |
| Gordon | 9/10 | 6884 days | 47% |
| Harrison | 7/10 | 6885 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
-4.04% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 41 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 | -3.98% |
| 198 | -4.00% |
| 199 | -4.02% |
| 200 | -4.04% |
| 201 | -4.06% |
| 202 | -4.08% |
| 203 | -4.10% |
| … | … |
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.