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.
Nick Morrison
Rankers owner
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
90.82%
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 | 620 days |  |
48.9 | 100% |
| Thomas Klinting | 10/10 | 674 days | |
39.7 | 81% |
| Franz Mesey | 9/10 | 689 days | 31.12 | 63% | |
| Judit Van lanen | 10/10 | 707 days | |
34.63 | 70% |
| Jack Robinson | 8/10 | 745 days | |
29.29 | 59% |
| Mikulas and Dominika | 8/10 | 767 days | |
26.46 | 53% |
| Elizabeth Braidotti | 10/10 | 817 days | 17.25 | 34% | |
| Craig Forsyth | 10/10 | 934 days | 9.11 | 17% | |
| Lea Behnem | 10/10 | 1007 days | |
7.47 | 14% |
| Nicolas Justin | 7/10 | 1351 days | |
5.58 | 10% |
| Stephanie Piou | 8/10 | 1351 days | |
5.58 | 10% |
| Alex | 9/10 | 1379 days | |
5.53 | 10% |
| Devan Sheppard | 10/10 | 1448 days | |
5.42 | 10% |
| Nina Coopmans | 7/10 | 2060 days | |
4.41 | 8% |
| Katherine | 10/10 | 2084 days | |
4.37 | 8% |
| Lieven De Vlaminck | 9/10 | 2090 days | |
4.36 | 8% |
| Andy | 10/10 | 2181 days | 3.51 | 6% | |
| Ron | 9/10 | 2185 days | |
4.21 | 7% |
| Bart Slingerland | 9/10 | 2440 days | |
3.79 | 6% |
| Birds Tubbs | 10/10 | 2441 days | |
3.79 | 6% |
| Malena | 10/10 | 2456 days | 3.14 | 5% | |
| Schael | 10/10 | 2460 days | |
3.76 | 6% |
| Ryan Pynappels | 9/10 | 2467 days | |
3.74 | 6% |
| Tobias Forst | 8/10 | 2548 days | |
3.61 | 6% |
| Sarah and Soren | 9/10 | 2553 days | |
3.6 | 6% |
| Alberto Redner | 10/10 | 2563 days | |
3.59 | 6% |
| Dozza | 10/10 | 2608 days | 2.93 | 5% | |
| Sarah James | 10/10 | 2790 days | |
3.21 | 5% |
| Nick Taylor | 10/10 | 2790 days | |
3.21 | 5% |
| Laurent Pouvreau | 10/10 | 2794 days | |
3.21 | 5% |
| Paap | 8/10 | 2827 days | |
3.15 | 5% |
| Wouter Jansen | 8/10 | 2827 days | |
3.15 | 5% |
| Luise Jaeger | 3/10 | 2840 days | |
2.9 | 5% |
| Steff | 9/10 | 2842 days | |
3.13 | 5% |
| wannaraft | 10/10 | 2850 days | 2.6 | 4% | |
| elpo | 6/10 | 3095 days | 2.26 | 3% | |
| kempt | 8/10 | 3126 days | 2.22 | 3% | |
| Andy | 8/10 | 3177 days | |
2.58 | 4% |
| Sam Bishop | 10/10 | 3187 days | 2.13 | 3% | |
| Kay Beaumont | 10/10 | 3189 days | |
2.56 | 4% |
| Johan | 10/10 | 3197 days | |
2.54 | 4% |
| Jakob Pedersen | 7/10 | 3197 days | |
2.54 | 4% |
| Jens van Evp | 9/10 | 3211 days | |
2.52 | 4% |
| Max Van der Zalm | 8/10 | 3211 days | |
2.52 | 4% |
| Carolina Gonzalez | 8/10 | 3213 days | |
2.52 | 4% |
| Kasper | 9/10 | 3213 days | |
2.52 | 4% |
| Chance McGuire | 10/10 | 3215 days | 2.1 | 3% | |
| katesc | 9/10 | 3266 days | |
2.43 | 4% |
| rosalindm | 9/10 | 3271 days | |
2.42 | 4% |
| jennyb | 9/10 | 3275 days | |
2.42 | 4% |
| Thomas Willi | 10/10 | 3287 days | |
2.4 | 3% |
| Jess Pasos | 10/10 | 3296 days | |
2.38 | 3% |
| Nikki Turner | 8/10 | 3442 days | |
2.14 | 3% |
| Sejna | 8/10 | 3463 days | |
2.11 | 3% |
| michellew | 10/10 | 3469 days | |
2.1 | 3% |
| erikholland | 8/10 | 3522 days | 1.68 | 2% | |
| mariea | 9/10 | 3533 days | |
1.99 | 3% |
| Krapels | 9/10 | 3545 days | |
1.97 | 3% |
| Halley | 5/10 | 3552 days | |
1.96 | 3% |
| Katie | 10/10 | 3570 days | |
1.93 | 3% |
| Ian S | 8/10 | 3571 days | |
1.93 | 3% |
| Debbie | 7/10 | 3572 days | |
1.93 | 3% |
| Daniel | 8/10 | 3580 days | |
1.92 | 2% |
| Kristy825 | 10/10 | 3584 days | 1.59 | 2% | |
| Limor | 6/10 | 3593 days | |
1.89 | 2% |
| Prentner | 6/10 | 3602 days | |
1.88 | 2% |
| Sonja | 9/10 | 3626 days | |
1.84 | 2% |
| Bronagh Mcartan | 9/10 | 3770 days | |
1.6 | 2% |
| Tim | 10/10 | 3794 days | |
1.56 | 2% |
| Brent Scanlan | 10/10 | 3863 days | |
1.45 | 2% |
| Meike Biel | 10/10 | 3871 days | |
1.44 | 1% |
| Hendrik | 6/10 | 3913 days | |
1.37 | 1% |
| Sabrina | 8/10 | 3913 days | |
1.37 | 1% |
| Peter Aston | 5/10 | 3913 days | |
1.37 | 1% |
| helga | 9/10 | 3915 days | 1.14 | 1% | |
| Janne | 8/10 | 3925 days | 1.12 | 1% | |
| Melissa Steedman | 9/10 | 3960 days | |
1.29 | 1% |
| gemma1 | 6/10 | 3965 days | 1.07 | 1% | |
| Francesco | 8/10 | 3995 days | |
1.23 | 1% |
| Jim&Rachel | 9/10 | 4078 days | |
1.1 | 1% |
| MarkReid | 10/10 | 4211 days | |
0.88 | 0% |
| HalRoberts | 8/10 | 4233 days | |
0.84 | 0% |
| David | 9/10 | 4242 days | |
0.83 | 0% |
| Justin | 8/10 | 4242 days | |
0.83 | 0% |
| Alex | 8/10 | 4249 days | |
0.82 | 0% |
| Hilary | 7/10 | 4258 days | |
0.8 | 0% |
| Roran | 7/10 | 4268 days | |
0.78 | 0% |
| Nina | 10/10 | 4293 days | |
0.74 | 0% |
| Inga | 9/10 | 4293 days | |
0.74 | 0% |
| Italy | 8/10 | 4293 days | |
0.74 | 0% |
| Nina | 8/10 | 4293 days | |
0.74 | 0% |
| Helen | 7/10 | 4293 days | |
0.74 | 0% |
| JuanPablo | 7/10 | 4310 days | |
0.72 | 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
-7.28% Adjustment
There may be an adjustment if an experience hasn't received any reviews within the last 60 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 364 days.
The Waitomo Adventures Ltd experience has been adjusted for 364 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 361 | -7.22% |
| 362 | -7.24% |
| 363 | -7.26% |
| 364 | -7.28% |
| 365 | -7.30% |
| 366 | -7.32% |
| 367 | -7.34% |
| … | … |
Final Ranking Score
84%
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.