Kia ora, 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 | 3364 days | 100% |
| Magali Schwantke | 10/10 | 3622 days | 74% |
| Hana Rachfalik | 9/10 | 3630 days | 73% |
| Liam Bates | 10/10 | 3641 days | 72% |
| Rahel Baufeld | 8/10 | 3647 days | 70% |
| Lea Behnem | 8/10 | 3651 days | 70% |
| Marlene Goecke | 9/10 | 3658 days | 70% |
| Felix Sternke | 7/10 | 3669 days | 65% |
| Timon Streicher | 10/10 | 3684 days | 68% |
| Suzanne Vermeulen | 7/10 | 3791 days | 54% |
| Kristina Farkas | 10/10 | 4020 days | 35% |
| Martha Taatz | 10/10 | 4039 days | 33% |
| Sibylle and Nadine | 8/10 | 4086 days | 28% |
| Hadler | 9/10 | 4371 days | 0% |
| Christine Helleiner | 10/10 | 4371 days | 0% |
| Ian Garner | 10/10 | 4383 days | 50% |
| Dieter Hirsch | 8/10 | 4435 days | 49% |
| Ken S | 10/10 | 4460 days | 50% |
| Katrina Gamby | 9/10 | 4747 days | 49% |
| Peter Moederer | 8/10 | 4752 days | 49% |
| Dick Kooij | 8/10 | 4807 days | 49% |
| Tony Hines | 8/10 | 4811 days | 49% |
| Hans | 8/10 | 4815 days | 49% |
| Urs Zuercher | 9/10 | 4830 days | 49% |
| Judy | 9/10 | 4834 days | 49% |
| Stevie | 8/10 | 4837 days | 49% |
| Thys | 8/10 | 4837 days | 49% |
| Adrian Weidell | 7/10 | 5030 days | 46% |
| Peter Kent | 10/10 | 5087 days | 50% |
| Helmut Schmid | 9/10 | 5094 days | 49% |
| V deLeeuw | 9/10 | 5096 days | 49% |
| Roy Barton | 9/10 | 5097 days | 49% |
| M H Hansen | 8/10 | 5112 days | 49% |
| Sabine | 9/10 | 5112 days | 49% |
| A Sorg | 10/10 | 5121 days | 50% |
| Leander Siegert | 8/10 | 5127 days | 49% |
| John & Myra Sloan | 9/10 | 5200 days | 49% |
| Andy Lever | 9/10 | 5206 days | 49% |
| Marianne Wheatley | 8/10 | 5454 days | 49% |
| Aimee Pollett | 9/10 | 5456 days | 49% |
| Tina Baun | 8/10 | 5458 days | 49% |
| Julia Hofstetter | 6/10 | 5459 days | 43% |
| Scheauwen | 4/10 | 5464 days | 32% |
| Shirley | 8/10 | 5464 days | 49% |
| Henrik Mundbuerg | 10/10 | 5470 days | 50% |
| Mike and Sue Clark | 2/10 | 5472 days | 22% |
| Dave and Emma | 7/10 | 5482 days | 46% |
| Rosey834 | 8/10 | 5556 days | 49% |
| David | 7/10 | 5764 days | 46% |
| kempt | 6/10 | 5770 days | 43% |
| Russ Turner | 9/10 | 5817 days | 49% |
| Remro | 8/10 | 5819 days | 49% |
| Rob & Anne | 9/10 | 5824 days | 49% |
| Pam Know | 8/10 | 5826 days | 49% |
| Gunda G | 10/10 | 5839 days | 50% |
| Denecke Thorsten | 8/10 | 5840 days | 49% |
| Jakob Pedersen | 9/10 | 5841 days | 49% |
| Lynn Tichauer | 7/10 | 5842 days | 46% |
| Malcolm Glad | 7/10 | 5844 days | 46% |
| Mathias Skov | 7/10 | 5845 days | 46% |
| Mick Thexton | 9/10 | 5854 days | 49% |
| Torsten Gehrke | 5/10 | 5876 days | 38% |
| Werner Swiss | 10/10 | 5881 days | 50% |
| gemmav | 8/10 | 5905 days | 49% |
| nadinef | 9/10 | 5913 days | 49% |
| Anne Ford | 8/10 | 5923 days | 49% |
| Lothar Riedmann | 7/10 | 5923 days | 46% |
| Sibylle Locher | 8/10 | 5929 days | 49% |
| Mike | 8/10 | 5933 days | 49% |
| godineau | 8/10 | 6047 days | 49% |
| katesh | 10/10 | 6120 days | 50% |
| CeesVanW | 9/10 | 6165 days | 49% |
| arthurwa | 10/10 | 6165 days | 50% |
| Jake1 | 7/10 | 6167 days | 46% |
| Peter Jackie | 9/10 | 6168 days | 49% |
| Gerd Hebbel | 8/10 | 6181 days | 49% |
| HeideS | 9/10 | 6184 days | 49% |
| Kate | 8/10 | 6188 days | 49% |
| Keith | 8/10 | 6189 days | 49% |
| ChristopherD | 9/10 | 6199 days | 49% |
| Green | 8/10 | 6205 days | 49% |
| Philip | 7/10 | 6214 days | 46% |
| Katy | 4/10 | 6216 days | 32% |
| Andrew | 8/10 | 6216 days | 49% |
| Nikolaj | 7/10 | 6216 days | 46% |
| KuntzGermany | 10/10 | 6220 days | 50% |
| Klalis | 8/10 | 6222 days | 49% |
| MartinD | 7/10 | 6223 days | 46% |
| Van Dam | 10/10 | 6227 days | 50% |
| Hans | 7/10 | 6237 days | 46% |
| Johann | 10/10 | 6242 days | 50% |
| Lynne | 9/10 | 6278 days | 49% |
| Heidi | 8/10 | 6280 days | 49% |
| Liz | 8/10 | 6304 days | 49% |
| Louise | 8/10 | 6329 days | 49% |
| Rosseel | 8/10 | 6331 days | 49% |
| teamaustria | 6/10 | 6354 days | 43% |
| Dave | 5/10 | 6355 days | 38% |
| Rebecca Smith | 9/10 | 6380 days | 49% |
| Daniela | 8/10 | 6544 days | 49% |
| Hoetnagels | 6/10 | 6548 days | 43% |
| Leo | 9/10 | 6557 days | 49% |
| Amanda | 6/10 | 6563 days | 43% |
| Sally and David Wallis | 10/10 | 6565 days | 50% |
| Roger & Margaret | 8/10 | 6579 days | 49% |
| Meiki | 9/10 | 6612 days | 49% |
| Dave | 8/10 | 6895 days | 49% |
| Beth | 10/10 | 6902 days | 50% |
| Frederik | 9/10 | 6919 days | 49% |
| Lucy | 7/10 | 6928 days | 46% |
| Jasper | 8/10 | 6930 days | 49% |
| Fiona | 8/10 | 6941 days | 49% |
| Gordon | 9/10 | 6942 days | 49% |
| Harrison | 7/10 | 6943 days | 46% |
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
-4.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 52 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 | -4.09% |
| 198 | -4.11% |
| 199 | -4.13% |
| 200 | -4.15% |
| 201 | -4.17% |
| 202 | -4.19% |
| 203 | -4.21% |
| … | … |
Balancing Adjustment
3.30% 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.