Ranking Score Explained
Hi there, 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 Kiwi Cave Rafting.
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.
Nick Morrison
Rankers owner
Kiwi Cave Rafting
Valid Reviews
23 Valid Reviews
The Kiwi Cave Rafting experience has a total of 23 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 23 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 8 |
|
35% |
| 9/10 | 4 |
|
17% |
| 8/10 | 8 |
|
35% |
| 7/10 | 2 |
|
9% |
| 6/10 | 1 |
|
4% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
86.96% Average
The raw data average (mean) for all the Kiwi Cave Rafting valid reviews is 86.96% and is based on 23 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
22 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 23 valid reviews, the experience has 22 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 22 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 8 |
|
36% |
| 9/10 | 4 |
|
18% |
| 8/10 | 7 |
|
32% |
| 7/10 | 2 |
|
9% |
| 6/10 | 1 |
|
5% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
87.27% Average
The raw data average (mean) for all the Kiwi Cave Rafting face-to-face reviews is 87.27% and is based on 22 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
93.91%
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 | Face-to-Face | Weight | Relative Weight |
|---|---|---|---|---|---|
| Andrew Bailey | 8/10 | 437 days |  |
83.69 | 100% |
| Robin | 10/10 | 461 days | |
79.59 | 95% |
| Theerada Wongkaew | 10/10 | 515 days | |
69.57 | 82% |
| Jasmine Rogers | 10/10 | 538 days | |
64.96 | 77% |
| Evan Lloyd | 10/10 | 563 days | |
59.82 | 70% |
| Jessica Nasstrom | 9/10 | 565 days | |
59.41 | 70% |
| Megan | 10/10 | 568 days | |
58.81 | 69% |
| Miriam Gamble | 10/10 | 582 days | |
56.04 | 66% |
| Matt Harris | 8/10 | 790 days | |
23.69 | 25% |
| Luisa and Hannes | 10/10 | 866 days | |
15.97 | 16% |
| Emeline Brocard | 10/10 | 1556 days | |
5.24 | 2% |
| Bernhard Fulterer | 6/10 | 1558 days | |
5.24 | 2% |
| Julia Ahrend | 8/10 | 1604 days | |
5.16 | 2% |
| Christian | 8/10 | 1900 days | |
4.68 | 2% |
| Nora | 8/10 | 1900 days | |
4.68 | 2% |
| Wouter Trumpie | 8/10 | 1986 days | |
4.54 | 1% |
| Julia Ramseier | 7/10 | 2009 days | |
4.5 | 1% |
| Chris Sylvia | 9/10 | 2265 days | |
4.08 | 1% |
| Steffien | 8/10 | 2272 days | 3.39 | 0% | |
| Karin & Bastiaan | 7/10 | 2602 days | |
3.52 | 0% |
| Paula Dove | 9/10 | 2628 days | |
3.48 | 0% |
| Anika Jedelsky | 8/10 | 2639 days | |
3.46 | 0% |
| Jau | 9/10 | 2656 days | |
3.43 | 0% |
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 Kiwi Cave Rafting experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-3.60% Adjustment
There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Kiwi Cave Rafting 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 364 days.
The Kiwi Cave Rafting experience has been adjusted for 180 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 177 | -3.54% |
| 178 | -3.56% |
| 179 | -3.58% |
| 180 | -3.60% |
| 181 | -3.62% |
| 182 | -3.64% |
| 183 | -3.66% |
| … | … |
Final Ranking Score
90%
The final ranking score once adjustments and rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.
If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.