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 Cave Stream Scenic Reserve.
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.
Cave Stream Scenic Reserve
Valid Reviews
50 Valid Reviews
The Cave Stream Scenic Reserve experience has a total of 60 reviews. There are 50 valid reviews that are included when calculating the ranking score and 10 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 50 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 37 |
|
74% |
| 9/10 | 10 |
|
20% |
| 8/10 | 3 |
|
6% |
| 7/10 | 0 |
|
0% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
96.80% Average
The raw data average (mean) for all the Cave Stream Scenic Reserve valid reviews is 96.80% and is based on 50 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
37 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 50 valid reviews, the experience has 37 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 37 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 26 |
|
70% |
| 9/10 | 8 |
|
22% |
| 8/10 | 3 |
|
8% |
| 7/10 | 0 |
|
0% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
96.22% Average
The raw data average (mean) for all the Cave Stream Scenic Reserve face-to-face reviews is 96.22% and is based on 37 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
98.15%
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 |
|---|---|---|---|
| Kdoe | 10/10 | 1078 days | 100% |
| Pete | 10/10 | 2020 days | 12% |
| Justin | 10/10 | 2173 days | 12% |
| Joan Dangerfield | 10/10 | 2629 days | 9% |
| Bob the genious | 10/10 | 2904 days | 8% |
| Wilhelm Wiechel | 9/10 | 3008 days | 7% |
| Emma Philpott | 10/10 | 3255 days | 6% |
| Frank Ryan | 10/10 | 3284 days | 6% |
| Car R | 10/10 | 3296 days | 6% |
| Kolar | 10/10 | 3318 days | 6% |
| Stuart Gange | 9/10 | 3351 days | 5% |
| Huon | 10/10 | 3607 days | 4% |
| Cecile | 9/10 | 3607 days | 4% |
| Jari Kahelin | 10/10 | 3614 days | 4% |
| Floriane Desnoyer | 10/10 | 3616 days | 4% |
| Elodie Bardolle | 8/10 | 3643 days | 4% |
| Yarden Oliva | 10/10 | 3655 days | 4% |
| Jan Penicka | 10/10 | 3660 days | 4% |
| Kim S | 10/10 | 3846 days | 3% |
| Chris | 10/10 | 3990 days | 2% |
| Tarillon Family | 8/10 | 3990 days | 2% |
| Sue Strebe | 8/10 | 4018 days | 2% |
| Oliver Andres | 10/10 | 4074 days | 2% |
| Helen Olsson | 10/10 | 4341 days | 0% |
| Simeon W | 10/10 | 4347 days | 0% |
| Philip Schumann | 10/10 | 4361 days | 0% |
| Jonas Hessel | 10/10 | 4362 days | 0% |
| Igor | 10/10 | 4365 days | 0% |
| Ann Winter | 10/10 | 4383 days | 3% |
| Phillip | 10/10 | 4383 days | 3% |
| Jason MacLeod | 10/10 | 4393 days | 3% |
| Debora Grusler | 10/10 | 4394 days | 3% |
| Lisbeth Sorum | 10/10 | 4400 days | 3% |
| Cameron Tarbotton | 10/10 | 4400 days | 3% |
| Katharina | 10/10 | 4717 days | 3% |
| Fabian | 10/10 | 4717 days | 3% |
| Eric | 9/10 | 4735 days | 3% |
| Rogier Ramaker | 9/10 | 4735 days | 3% |
| Melvin Groenhof | 9/10 | 4735 days | 3% |
| Roeland Driessen | 10/10 | 4789 days | 3% |
| Anna | 10/10 | 5062 days | 3% |
| Rachel_Flowers | 10/10 | 5186 days | 3% |
| D Patterson | 10/10 | 5216 days | 3% |
| Sophie Burge | 9/10 | 5438 days | 3% |
| Ann-Kathrin Auditor | 10/10 | 5455 days | 3% |
| Lenore Dejong | 10/10 | 5463 days | 3% |
| Paap | 9/10 | 5466 days | 3% |
| Tim Pfahlert | 9/10 | 5477 days | 3% |
| Daniela Seibel | 10/10 | 5481 days | 3% |
| Rissa W | 9/10 | 6585 days | 3% |
Adjustments
No Adjustment
Several adjustments to the weighted average may be added to improve relevancy and credibility. Cave Stream Scenic Reserve does not meet the criteria for any of these adjustments to apply.
Balancing Adjustment
0.15% 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
98%
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.