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 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
88.05%
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 | 1567 days | 100% |
| Thomas Klinting | 10/10 | 1621 days | 97% |
| Franz Mesey | 9/10 | 1636 days | 97% |
| Judit Van lanen | 10/10 | 1654 days | 96% |
| Jack Robinson | 8/10 | 1692 days | 89% |
| Mikulas and Dominika | 8/10 | 1714 days | 88% |
| Elizabeth Braidotti | 10/10 | 1764 days | 90% |
| Craig Forsyth | 10/10 | 1881 days | 84% |
| Lea Behnem | 10/10 | 1954 days | 81% |
| Nicolas Justin | 7/10 | 2298 days | 57% |
| Stephanie Piou | 8/10 | 2298 days | 60% |
| Alex | 9/10 | 2326 days | 62% |
| Devan Sheppard | 10/10 | 2395 days | 58% |
| Nina Coopmans | 7/10 | 3007 days | 25% |
| Katherine | 10/10 | 3031 days | 26% |
| Lieven De Vlaminck | 9/10 | 3037 days | 26% |
| Andy | 10/10 | 3128 days | 21% |
| Ron | 9/10 | 3132 days | 21% |
| Bart Slingerland | 9/10 | 3387 days | 8% |
| Birds Tubbs | 10/10 | 3388 days | 8% |
| Malena | 10/10 | 3403 days | 8% |
| Schael | 10/10 | 3407 days | 7% |
| Ryan Pynappels | 9/10 | 3414 days | 7% |
| Tobias Forst | 8/10 | 3495 days | 3% |
| Sarah and Soren | 9/10 | 3500 days | 3% |
| Alberto Redner | 10/10 | 3510 days | 2% |
| Dozza | 10/10 | 3555 days | 0% |
| Sarah James | 10/10 | 3737 days | 21% |
| Nick Taylor | 10/10 | 3737 days | 21% |
| Laurent Pouvreau | 10/10 | 3741 days | 21% |
| Paap | 8/10 | 3774 days | 20% |
| Wouter Jansen | 8/10 | 3774 days | 20% |
| Luise Jaeger | 3/10 | 3787 days | 15% |
| Steff | 9/10 | 3789 days | 21% |
| wannaraft | 10/10 | 3797 days | 21% |
| elpo | 6/10 | 4042 days | 17% |
| kempt | 8/10 | 4073 days | 20% |
| Andy | 8/10 | 4124 days | 20% |
| Sam Bishop | 10/10 | 4134 days | 21% |
| Kay Beaumont | 10/10 | 4136 days | 21% |
| Johan | 10/10 | 4144 days | 21% |
| Jakob Pedersen | 7/10 | 4144 days | 19% |
| Jens van Evp | 9/10 | 4158 days | 21% |
| Max Van der Zalm | 8/10 | 4158 days | 20% |
| Carolina Gonzalez | 8/10 | 4160 days | 20% |
| Kasper | 9/10 | 4160 days | 21% |
| Chance McGuire | 10/10 | 4162 days | 21% |
| katesc | 9/10 | 4213 days | 21% |
| rosalindm | 9/10 | 4218 days | 21% |
| jennyb | 9/10 | 4222 days | 21% |
| Thomas Willi | 10/10 | 4234 days | 21% |
| Jess Pasos | 10/10 | 4243 days | 21% |
| Nikki Turner | 8/10 | 4389 days | 20% |
| Sejna | 8/10 | 4410 days | 20% |
| michellew | 10/10 | 4416 days | 21% |
| erikholland | 8/10 | 4469 days | 20% |
| mariea | 9/10 | 4480 days | 21% |
| Krapels | 9/10 | 4493 days | 21% |
| Halley | 5/10 | 4499 days | 16% |
| Katie | 10/10 | 4517 days | 21% |
| Ian S | 8/10 | 4518 days | 20% |
| Debbie | 7/10 | 4519 days | 19% |
| Daniel | 8/10 | 4527 days | 20% |
| Kristy825 | 10/10 | 4531 days | 21% |
| Limor | 6/10 | 4540 days | 17% |
| Prentner | 6/10 | 4549 days | 17% |
| Sonja | 9/10 | 4573 days | 21% |
| Bronagh Mcartan | 9/10 | 4717 days | 21% |
| Tim | 10/10 | 4741 days | 21% |
| Brent Scanlan | 10/10 | 4810 days | 21% |
| Meike Biel | 10/10 | 4818 days | 21% |
| Hendrik | 6/10 | 4860 days | 17% |
| Sabrina | 8/10 | 4860 days | 20% |
| Peter Aston | 5/10 | 4860 days | 16% |
| helga | 9/10 | 4862 days | 21% |
| Janne | 8/10 | 4872 days | 20% |
| Melissa Steedman | 9/10 | 4907 days | 21% |
| gemma1 | 6/10 | 4912 days | 17% |
| Francesco | 8/10 | 4942 days | 20% |
| Jim&Rachel | 9/10 | 5025 days | 21% |
| MarkReid | 10/10 | 5158 days | 21% |
| HalRoberts | 8/10 | 5180 days | 20% |
| David | 9/10 | 5189 days | 21% |
| Justin | 8/10 | 5189 days | 20% |
| Alex | 8/10 | 5196 days | 20% |
| Hilary | 7/10 | 5205 days | 19% |
| Roran | 7/10 | 5215 days | 19% |
| Nina | 10/10 | 5240 days | 21% |
| Inga | 9/10 | 5240 days | 21% |
| Italy | 8/10 | 5240 days | 20% |
| Nina | 8/10 | 5240 days | 20% |
| Helen | 7/10 | 5240 days | 19% |
| JuanPablo | 7/10 | 5257 days | 19% |
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
-2.10% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 120 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 | -2.06% |
| 198 | -2.07% |
| 199 | -2.09% |
| 200 | -2.10% |
| 201 | -2.11% |
| 202 | -2.12% |
| 203 | -2.13% |
| … | … |
Final Ranking Score
86%
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.