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
92.07%
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 |
|---|---|---|---|---|---|
| Dennis | 10/10 | 1184 days |  |
4.83 | 100% |
| Thomas Klinting | 10/10 | 1238 days | |
4.72 | 98% |
| Franz Mesey | 9/10 | 1253 days | 4.69 | 97% | |
| Judit Van lanen | 10/10 | 1271 days | |
4.66 | 96% |
| Jack Robinson | 8/10 | 1309 days | |
4.35 | 90% |
| Mikulas and Dominika | 8/10 | 1331 days | |
4.31 | 89% |
| Elizabeth Braidotti | 10/10 | 1381 days | 4.44 | 92% | |
| Craig Forsyth | 10/10 | 1498 days | 4.21 | 87% | |
| Lea Behnem | 10/10 | 1571 days | |
4.07 | 84% |
| Nicolas Justin | 7/10 | 1915 days | |
3.09 | 64% |
| Stephanie Piou | 8/10 | 1915 days | |
3.23 | 67% |
| Alex | 9/10 | 1943 days | |
3.34 | 69% |
| Devan Sheppard | 10/10 | 2012 days | |
3.21 | 66% |
| Nina Coopmans | 7/10 | 2624 days | |
1.83 | 38% |
| Katherine | 10/10 | 2648 days | |
1.96 | 41% |
| Lieven De Vlaminck | 9/10 | 2654 days | |
1.95 | 40% |
| Andy | 10/10 | 2745 days | 1.77 | 37% | |
| Ron | 9/10 | 2749 days | |
1.76 | 37% |
| Bart Slingerland | 9/10 | 3004 days | |
1.26 | 26% |
| Birds Tubbs | 10/10 | 3005 days | |
1.26 | 26% |
| Malena | 10/10 | 3020 days | 1.23 | 26% | |
| Schael | 10/10 | 3024 days | |
1.23 | 25% |
| Ryan Pynappels | 9/10 | 3031 days | |
1.21 | 25% |
| Tobias Forst | 8/10 | 3112 days | |
1.0 | 21% |
| Sarah and Soren | 9/10 | 3117 days | |
1.04 | 22% |
| Alberto Redner | 10/10 | 3127 days | |
1.02 | 21% |
| Dozza | 10/10 | 3172 days | 0.94 | 19% | |
| Sarah James | 10/10 | 3354 days | |
0.58 | 12% |
| Nick Taylor | 10/10 | 3354 days | |
0.58 | 12% |
| Laurent Pouvreau | 10/10 | 3358 days | |
0.57 | 12% |
| Paap | 8/10 | 3391 days | |
0.48 | 10% |
| Wouter Jansen | 8/10 | 3391 days | |
0.48 | 10% |
| Luise Jaeger | 3/10 | 3404 days | |
0.37 | 8% |
| Steff | 9/10 | 3406 days | |
0.48 | 10% |
| wannaraft | 10/10 | 3414 days | 0.46 | 10% | |
| elpo | 6/10 | 3659 days | 0.0 | 0% | |
| kempt | 8/10 | 3690 days | 0.0 | 0% | |
| Andy | 8/10 | 3741 days | |
0.0 | 0% |
| Sam Bishop | 10/10 | 3751 days | 0.0 | 0% | |
| Kay Beaumont | 10/10 | 3753 days | |
0.0 | 0% |
| Johan | 10/10 | 3761 days | |
0.0 | 0% |
| Jakob Pedersen | 7/10 | 3761 days | |
0.0 | 0% |
| Jens van Evp | 9/10 | 3775 days | |
0.0 | 0% |
| Max Van der Zalm | 8/10 | 3775 days | |
0.0 | 0% |
| Carolina Gonzalez | 8/10 | 3777 days | |
0.0 | 0% |
| Kasper | 9/10 | 3777 days | |
0.0 | 0% |
| Chance McGuire | 10/10 | 3779 days | 0.0 | 0% | |
| katesc | 9/10 | 3830 days | |
0.0 | 0% |
| rosalindm | 9/10 | 3835 days | |
0.0 | 0% |
| jennyb | 9/10 | 3839 days | |
0.0 | 0% |
| Thomas Willi | 10/10 | 3851 days | |
0.0 | 0% |
| Jess Pasos | 10/10 | 3860 days | |
0.0 | 0% |
| Nikki Turner | 8/10 | 4006 days | |
0.0 | 0% |
| Sejna | 8/10 | 4027 days | |
0.0 | 0% |
| michellew | 10/10 | 4033 days | |
0.0 | 0% |
| erikholland | 8/10 | 4086 days | 0.0 | 0% | |
| mariea | 9/10 | 4097 days | |
0.0 | 0% |
| Krapels | 9/10 | 4109 days | |
0.0 | 0% |
| Halley | 5/10 | 4116 days | |
0.0 | 0% |
| Katie | 10/10 | 4133 days | |
0.0 | 0% |
| Ian S | 8/10 | 4134 days | |
0.0 | 0% |
| Debbie | 7/10 | 4136 days | |
0.0 | 0% |
| Daniel | 8/10 | 4144 days | |
0.0 | 0% |
| Kristy825 | 10/10 | 4148 days | 0.0 | 0% | |
| Limor | 6/10 | 4156 days | |
0.0 | 0% |
| Prentner | 6/10 | 4165 days | |
0.0 | 0% |
| Sonja | 9/10 | 4190 days | |
0.0 | 0% |
| Bronagh Mcartan | 9/10 | 4333 days | |
0.0 | 0% |
| Tim | 10/10 | 4357 days | |
0.0 | 0% |
| Brent Scanlan | 10/10 | 4427 days | |
0.0 | 0% |
| Meike Biel | 10/10 | 4435 days | |
0.0 | 0% |
| Hendrik | 6/10 | 4477 days | |
0.0 | 0% |
| Sabrina | 8/10 | 4477 days | |
0.0 | 0% |
| Peter Aston | 5/10 | 4477 days | |
0.0 | 0% |
| helga | 9/10 | 4478 days | 0.0 | 0% | |
| Janne | 8/10 | 4488 days | 0.0 | 0% | |
| Melissa Steedman | 9/10 | 4524 days | |
0.0 | 0% |
| gemma1 | 6/10 | 4529 days | 0.0 | 0% | |
| Francesco | 8/10 | 4559 days | |
0.0 | 0% |
| Jim&Rachel | 9/10 | 4642 days | |
0.0 | 0% |
| MarkReid | 10/10 | 4775 days | |
0.0 | 0% |
| HalRoberts | 8/10 | 4797 days | |
0.0 | 0% |
| David | 9/10 | 4806 days | |
0.0 | 0% |
| Justin | 8/10 | 4806 days | |
0.0 | 0% |
| Alex | 8/10 | 4813 days | |
0.0 | 0% |
| Hilary | 7/10 | 4822 days | |
0.0 | 0% |
| Roran | 7/10 | 4832 days | |
0.0 | 0% |
| Nina | 10/10 | 4857 days | |
0.0 | 0% |
| Inga | 9/10 | 4857 days | |
0.0 | 0% |
| Italy | 8/10 | 4857 days | |
0.0 | 0% |
| Nina | 8/10 | 4857 days | |
0.0 | 0% |
| Helen | 7/10 | 4857 days | |
0.0 | 0% |
| JuanPablo | 7/10 | 4874 days | |
0.0 | 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 Waitomo Adventures Ltd experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-2.33% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 111 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 | -2.29% |
| 198 | -2.30% |
| 199 | -2.32% |
| 200 | -2.33% |
| 201 | -2.34% |
| 202 | -2.35% |
| 203 | -2.36% |
| … | … |
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.