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 Waitomo Walkway.
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.
Waitomo Walkway
Valid Reviews
29 Valid Reviews
The Waitomo Walkway experience has a total of 29 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 29 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 10 |
|
34% |
| 9/10 | 10 |
|
34% |
| 8/10 | 7 |
|
24% |
| 7/10 | 2 |
|
7% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
89.66% Average
The raw data average (mean) for all the Waitomo Walkway valid reviews is 89.66% and is based on 29 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
25 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 29 valid reviews, the experience has 25 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 25 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 6 |
|
24% |
| 9/10 | 10 |
|
40% |
| 8/10 | 7 |
|
28% |
| 7/10 | 2 |
|
8% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
88.00% Average
The raw data average (mean) for all the Waitomo Walkway face-to-face reviews is 88.00% and is based on 25 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
90.18%
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 |
|---|---|---|---|
| Flatlanders | 10/10 | 2747 days | 100% |
| Julia Achatz | 8/10 | 3448 days | 48% |
| Markus Wagner | 9/10 | 3448 days | 49% |
| Eline-Jessica van der Hoeven | 10/10 | 3537 days | 43% |
| Eline | 9/10 | 3767 days | 26% |
| Dave Lamb | 8/10 | 3798 days | 24% |
| Anna Fath | 7/10 | 3814 days | 21% |
| Mark Rosema | 9/10 | 3835 days | 21% |
| Fides | 10/10 | 4139 days | 0% |
| Simon Mehlmann | 8/10 | 4491 days | 19% |
| Andreas Garbin | 10/10 | 4957 days | 19% |
| Ron | 7/10 | 4973 days | 17% |
| Pietersen | 8/10 | 4980 days | 19% |
| Bodil Andersen | 9/10 | 4984 days | 19% |
| Rob Klauer | 9/10 | 5232 days | 19% |
| Martin Guillaume | 10/10 | 5240 days | 19% |
| Lee Lloyd | 8/10 | 5254 days | 19% |
| Eline Vakentijn | 8/10 | 5258 days | 19% |
| A Sorg | 10/10 | 5265 days | 19% |
| Samplonius | 9/10 | 5268 days | 19% |
| Robin | 10/10 | 5579 days | 19% |
| huggyfamily | 10/10 | 5579 days | 19% |
| Binder | 10/10 | 5594 days | 19% |
| Annelie & Martin | 9/10 | 5614 days | 19% |
| Nadia Husain | 9/10 | 5638 days | 19% |
| Ralf Genthe | 9/10 | 6020 days | 19% |
| vernenal | 10/10 | 6069 days | 19% |
| Chris Mackamul | 9/10 | 6072 days | 19% |
| Ulyate | 8/10 | 6076 days | 19% |
Adjustments
No Adjustment
Several adjustments to the weighted average may be added to improve relevancy and credibility. Waitomo Walkway does not meet the criteria for any of these adjustments to apply.
Balancing Adjustment
0.98% 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 folk 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
91%
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.