Ranking Score Explained
G'day 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 Waitomo Adventures Ltd.
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 Adventures Ltd
Valid Reviews
93 Valid Reviews
The Waitomo Adventures Ltd experience has a total of 94 reviews. There are 93 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 93 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 32 |
|
34% |
| 9/10 | 22 |
|
24% |
| 8/10 | 23 |
|
25% |
| 7/10 | 8 |
|
9% |
| 6/10 | 5 |
|
5% |
| 5/10 | 2 |
|
2% |
| 4/10 | 0 |
|
0% |
| 3/10 | 1 |
|
1% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
86.13% Average
The raw data average (mean) for all the Waitomo Adventures Ltd valid reviews is 86.13% and is based on 93 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
77 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 93 valid reviews, the experience has 77 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 77 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 23 |
|
30% |
| 9/10 | 20 |
|
26% |
| 8/10 | 20 |
|
26% |
| 7/10 | 8 |
|
10% |
| 6/10 | 3 |
|
4% |
| 5/10 | 2 |
|
3% |
| 4/10 | 0 |
|
0% |
| 3/10 | 1 |
|
1% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
85.32% Average
The raw data average (mean) for all the Waitomo Adventures Ltd face-to-face reviews is 85.32% and is based on 77 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
87.92%
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 |
|---|---|---|---|
| Dennis | 10/10 | 1976 days | 100% |
| Thomas Klinting | 10/10 | 2030 days | 97% |
| Franz Mesey | 9/10 | 2045 days | 96% |
| Judit Van lanen | 10/10 | 2063 days | 94% |
| Jack Robinson | 8/10 | 2101 days | 87% |
| Mikulas and Dominika | 8/10 | 2123 days | 86% |
| Elizabeth Braidotti | 10/10 | 2173 days | 87% |
| Craig Forsyth | 10/10 | 2290 days | 80% |
| Lea Behnem | 10/10 | 2363 days | 75% |
| Nicolas Justin | 7/10 | 2707 days | 48% |
| Stephanie Piou | 8/10 | 2707 days | 50% |
| Alex | 9/10 | 2735 days | 52% |
| Devan Sheppard | 10/10 | 2804 days | 47% |
| Nina Coopmans | 7/10 | 3416 days | 7% |
| Katherine | 10/10 | 3440 days | 6% |
| Lieven De Vlaminck | 9/10 | 3446 days | 6% |
| Andy | 10/10 | 3537 days | 0% |
| Ron | 9/10 | 3541 days | 0% |
| Bart Slingerland | 9/10 | 3796 days | 26% |
| Birds Tubbs | 10/10 | 3797 days | 26% |
| Malena | 10/10 | 3812 days | 26% |
| Schael | 10/10 | 3816 days | 26% |
| Ryan Pynappels | 9/10 | 3823 days | 26% |
| Tobias Forst | 8/10 | 3904 days | 24% |
| Sarah and Soren | 9/10 | 3909 days | 26% |
| Alberto Redner | 10/10 | 3919 days | 26% |
| Dozza | 10/10 | 3964 days | 26% |
| Sarah James | 10/10 | 4146 days | 26% |
| Nick Taylor | 10/10 | 4146 days | 26% |
| Laurent Pouvreau | 10/10 | 4150 days | 26% |
| Paap | 8/10 | 4183 days | 24% |
| Wouter Jansen | 8/10 | 4183 days | 24% |
| Luise Jaeger | 3/10 | 4196 days | 18% |
| Steff | 9/10 | 4198 days | 26% |
| wannaraft | 10/10 | 4206 days | 26% |
| elpo | 6/10 | 4451 days | 20% |
| kempt | 8/10 | 4482 days | 24% |
| Andy | 8/10 | 4533 days | 24% |
| Sam Bishop | 10/10 | 4543 days | 26% |
| Kay Beaumont | 10/10 | 4545 days | 26% |
| Johan | 10/10 | 4553 days | 26% |
| Jakob Pedersen | 7/10 | 4553 days | 23% |
| Jens van Evp | 9/10 | 4567 days | 26% |
| Max Van der Zalm | 8/10 | 4567 days | 24% |
| Carolina Gonzalez | 8/10 | 4569 days | 24% |
| Kasper | 9/10 | 4569 days | 26% |
| Chance McGuire | 10/10 | 4571 days | 26% |
| katesc | 9/10 | 4622 days | 26% |
| rosalindm | 9/10 | 4627 days | 26% |
| jennyb | 9/10 | 4631 days | 26% |
| Thomas Willi | 10/10 | 4643 days | 26% |
| Jess Pasos | 10/10 | 4652 days | 26% |
| Nikki Turner | 8/10 | 4798 days | 24% |
| Sejna | 8/10 | 4819 days | 24% |
| michellew | 10/10 | 4825 days | 26% |
| erikholland | 8/10 | 4878 days | 24% |
| mariea | 9/10 | 4889 days | 26% |
| Krapels | 9/10 | 4901 days | 26% |
| Halley | 5/10 | 4907 days | 19% |
| Katie | 10/10 | 4925 days | 26% |
| Ian S | 8/10 | 4926 days | 24% |
| Debbie | 7/10 | 4927 days | 23% |
| Daniel | 8/10 | 4936 days | 24% |
| Kristy825 | 10/10 | 4940 days | 26% |
| Limor | 6/10 | 4948 days | 20% |
| Prentner | 6/10 | 4957 days | 20% |
| Sonja | 9/10 | 4982 days | 26% |
| Bronagh Mcartan | 9/10 | 5125 days | 26% |
| Tim | 10/10 | 5149 days | 26% |
| Brent Scanlan | 10/10 | 5219 days | 26% |
| Meike Biel | 10/10 | 5227 days | 26% |
| Hendrik | 6/10 | 5269 days | 20% |
| Sabrina | 8/10 | 5269 days | 24% |
| Peter Aston | 5/10 | 5269 days | 19% |
| helga | 9/10 | 5270 days | 26% |
| Janne | 8/10 | 5280 days | 24% |
| Melissa Steedman | 9/10 | 5316 days | 26% |
| gemma1 | 6/10 | 5321 days | 20% |
| Francesco | 8/10 | 5351 days | 24% |
| Jim&Rachel | 9/10 | 5434 days | 26% |
| MarkReid | 10/10 | 5567 days | 26% |
| HalRoberts | 8/10 | 5589 days | 24% |
| David | 9/10 | 5598 days | 26% |
| Justin | 8/10 | 5598 days | 24% |
| Alex | 8/10 | 5605 days | 24% |
| Hilary | 7/10 | 5614 days | 23% |
| Roran | 7/10 | 5624 days | 23% |
| Nina | 10/10 | 5649 days | 26% |
| Inga | 9/10 | 5649 days | 26% |
| Italy | 8/10 | 5649 days | 24% |
| Nina | 8/10 | 5649 days | 24% |
| Helen | 7/10 | 5649 days | 23% |
| JuanPablo | 7/10 | 5666 days | 23% |
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 Waitomo Adventures Ltd experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-2.19% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 119 days. However the Waitomo Adventures Ltd 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 Waitomo Adventures Ltd experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -2.16% |
| 198 | -2.17% |
| 199 | -2.18% |
| 200 | -2.19% |
| 201 | -2.20% |
| 202 | -2.21% |
| 203 | -2.22% |
| … | … |
Final Ranking Score
86%
The final ranking score once any adjustments, ratings, 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.