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 Nelson Lakes National Park.
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.
Nelson Lakes National Park
Valid Reviews
37 Valid Reviews
The Nelson Lakes National Park experience has a total of 37 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 37 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 7 |
|
19% |
| 9/10 | 11 |
|
30% |
| 8/10 | 10 |
|
27% |
| 7/10 | 6 |
|
16% |
| 6/10 | 1 |
|
3% |
| 5/10 | 1 |
|
3% |
| 4/10 | 0 |
|
0% |
| 3/10 | 1 |
|
3% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
82.43% Average
The raw data average (mean) for all the Nelson Lakes National Park valid reviews is 82.43% and is based on 37 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
36 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 37 valid reviews, the experience has 36 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 36 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 7 |
|
19% |
| 9/10 | 11 |
|
31% |
| 8/10 | 10 |
|
28% |
| 7/10 | 6 |
|
17% |
| 6/10 | 1 |
|
3% |
| 5/10 | 1 |
|
3% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
83.89% Average
The raw data average (mean) for all the Nelson Lakes National Park face-to-face reviews is 83.89% and is based on 36 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
81.01%
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 |
|---|---|---|---|
| Ross | 3/10 | 1804 days | 100% |
| Sophie Kalnymsky | 9/10 | 3865 days | 33% |
| Jonathan Brunetti | 8/10 | 3915 days | 29% |
| Sophie Arru | 8/10 | 3921 days | 29% |
| Philipp Richter | 8/10 | 3971 days | 25% |
| Simon Quass | 10/10 | 3972 days | 25% |
| Esther Itier | 7/10 | 4204 days | 7% |
| Maria Schober | 9/10 | 4226 days | 6% |
| Sibylle and Nadine | 8/10 | 4291 days | 1% |
| Fanny DeBon | 6/10 | 4298 days | 0% |
| Bartlomiej Berger | 7/10 | 4305 days | 0% |
| Florian Klein | 9/10 | 4527 days | 33% |
| Sanne Meijer | 8/10 | 4558 days | 32% |
| Adam | 8/10 | 4567 days | 32% |
| Anne Haenchen | 9/10 | 4575 days | 33% |
| Kathi | 9/10 | 4575 days | 33% |
| Hadar | 5/10 | 4579 days | 24% |
| Leon Courtney | 7/10 | 4582 days | 31% |
| Kristyna | 10/10 | 4591 days | 33% |
| Wayne Schist | 8/10 | 4598 days | 32% |
| David Krasner | 10/10 | 4600 days | 33% |
| Matthias Freiling | 10/10 | 4601 days | 33% |
| Max Tetzlaff | 9/10 | 4601 days | 33% |
| Johannes | 7/10 | 4602 days | 31% |
| Alexis Redor | 7/10 | 4606 days | 31% |
| Ngaire Davies | 8/10 | 4617 days | 32% |
| Paul Davies | 8/10 | 4617 days | 32% |
| Mayan Goddat | 9/10 | 4623 days | 33% |
| Daniel Naveh | 9/10 | 4623 days | 33% |
| Jean Batiste Le meur | 9/10 | 4623 days | 33% |
| Clara Hayes | 7/10 | 4629 days | 31% |
| Michael Rohn | 10/10 | 4631 days | 33% |
| Evian Bolz | 10/10 | 4632 days | 33% |
| Giles Leonard | 8/10 | 4922 days | 32% |
| Sian Bolderson | 9/10 | 4923 days | 33% |
| Stu Murray | 10/10 | 4940 days | 33% |
| Gerard Berote | 9/10 | 4941 days | 33% |
Adjustments
No Adjustment
Several adjustments to the weighted average may be added to improve relevancy and credibility. Nelson Lakes National Park does not meet the criteria for any of these adjustments to apply.
Balancing Adjustment
2.73% 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
84%
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.