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
91.30%
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 | 526 days |  |
67.39 | 100% |
| Thomas Klinting | 10/10 | 580 days | |
56.43 | 84% |
| Franz Mesey | 9/10 | 594 days | 44.77 | 66% | |
| Judit Van lanen | 10/10 | 613 days | |
50.18 | 74% |
| Jack Robinson | 8/10 | 651 days | |
43.49 | 64% |
| Mikulas and Dominika | 8/10 | 673 days | |
39.86 | 59% |
| Elizabeth Braidotti | 10/10 | 723 days | 26.93 | 39% | |
| Craig Forsyth | 10/10 | 839 days | 15.39 | 22% | |
| Lea Behnem | 10/10 | 913 days | |
12.3 | 17% |
| Nicolas Justin | 7/10 | 1257 days | |
5.73 | 7% |
| Stephanie Piou | 8/10 | 1257 days | |
5.73 | 7% |
| Alex | 9/10 | 1285 days | |
5.69 | 7% |
| Devan Sheppard | 10/10 | 1354 days | |
5.57 | 7% |
| Nina Coopmans | 7/10 | 1966 days | |
4.57 | 6% |
| Katherine | 10/10 | 1990 days | |
4.53 | 6% |
| Lieven De Vlaminck | 9/10 | 1996 days | |
4.52 | 5% |
| Andy | 10/10 | 2087 days | 3.64 | 4% | |
| Ron | 9/10 | 2091 days | |
4.36 | 5% |
| Bart Slingerland | 9/10 | 2346 days | |
3.94 | 5% |
| Birds Tubbs | 10/10 | 2347 days | |
3.94 | 5% |
| Malena | 10/10 | 2362 days | 3.26 | 4% | |
| Schael | 10/10 | 2366 days | |
3.91 | 5% |
| Ryan Pynappels | 9/10 | 2373 days | |
3.9 | 5% |
| Tobias Forst | 8/10 | 2454 days | |
3.77 | 4% |
| Sarah and Soren | 9/10 | 2459 days | |
3.76 | 4% |
| Alberto Redner | 10/10 | 2469 days | |
3.74 | 4% |
| Dozza | 10/10 | 2514 days | 3.06 | 3% | |
| Sarah James | 10/10 | 2696 days | |
3.37 | 4% |
| Nick Taylor | 10/10 | 2696 days | |
3.37 | 4% |
| Laurent Pouvreau | 10/10 | 2700 days | |
3.36 | 4% |
| Paap | 8/10 | 2733 days | |
3.31 | 4% |
| Wouter Jansen | 8/10 | 2733 days | |
3.31 | 4% |
| Luise Jaeger | 3/10 | 2746 days | |
3.04 | 3% |
| Steff | 9/10 | 2748 days | |
3.28 | 4% |
| wannaraft | 10/10 | 2756 days | 2.72 | 3% | |
| elpo | 6/10 | 3001 days | 2.39 | 2% | |
| kempt | 8/10 | 3032 days | 2.35 | 2% | |
| Andy | 8/10 | 3083 days | |
2.73 | 3% |
| Sam Bishop | 10/10 | 3093 days | 2.26 | 2% | |
| Kay Beaumont | 10/10 | 3095 days | |
2.71 | 3% |
| Johan | 10/10 | 3103 days | |
2.7 | 3% |
| Jakob Pedersen | 7/10 | 3103 days | |
2.7 | 3% |
| Jens van Evp | 9/10 | 3117 days | |
2.68 | 3% |
| Max Van der Zalm | 8/10 | 3117 days | |
2.68 | 3% |
| Carolina Gonzalez | 8/10 | 3119 days | |
2.67 | 3% |
| Kasper | 9/10 | 3119 days | |
2.67 | 3% |
| Chance McGuire | 10/10 | 3121 days | 2.22 | 2% | |
| katesc | 9/10 | 3172 days | |
2.59 | 3% |
| rosalindm | 9/10 | 3177 days | |
2.58 | 3% |
| jennyb | 9/10 | 3181 days | |
2.57 | 3% |
| Thomas Willi | 10/10 | 3193 days | |
2.55 | 3% |
| Jess Pasos | 10/10 | 3202 days | |
2.54 | 3% |
| Nikki Turner | 8/10 | 3348 days | |
2.3 | 2% |
| Sejna | 8/10 | 3369 days | |
2.26 | 2% |
| michellew | 10/10 | 3375 days | |
2.25 | 2% |
| erikholland | 8/10 | 3428 days | 1.8 | 1% | |
| mariea | 9/10 | 3439 days | |
2.15 | 2% |
| Krapels | 9/10 | 3451 days | |
2.13 | 2% |
| Halley | 5/10 | 3457 days | |
2.12 | 2% |
| Katie | 10/10 | 3475 days | |
2.09 | 2% |
| Ian S | 8/10 | 3476 days | |
2.09 | 2% |
| Debbie | 7/10 | 3477 days | |
2.08 | 2% |
| Daniel | 8/10 | 3486 days | |
2.07 | 2% |
| Kristy825 | 10/10 | 3490 days | 1.72 | 1% | |
| Limor | 6/10 | 3498 days | |
2.05 | 2% |
| Prentner | 6/10 | 3507 days | |
2.04 | 2% |
| Sonja | 9/10 | 3532 days | |
1.99 | 2% |
| Bronagh Mcartan | 9/10 | 3675 days | |
1.76 | 1% |
| Tim | 10/10 | 3699 days | |
1.72 | 1% |
| Brent Scanlan | 10/10 | 3769 days | |
1.6 | 1% |
| Meike Biel | 10/10 | 3777 days | |
1.59 | 1% |
| Hendrik | 6/10 | 3819 days | |
1.52 | 1% |
| Sabrina | 8/10 | 3819 days | |
1.52 | 1% |
| Peter Aston | 5/10 | 3819 days | |
1.52 | 1% |
| helga | 9/10 | 3820 days | 1.27 | 1% | |
| Janne | 8/10 | 3830 days | 1.25 | 1% | |
| Melissa Steedman | 9/10 | 3866 days | |
1.44 | 1% |
| gemma1 | 6/10 | 3871 days | 1.2 | 0% | |
| Francesco | 8/10 | 3901 days | |
1.39 | 1% |
| Jim&Rachel | 9/10 | 3984 days | |
1.25 | 1% |
| MarkReid | 10/10 | 4117 days | |
1.03 | 0% |
| HalRoberts | 8/10 | 4139 days | |
1.0 | 0% |
| David | 9/10 | 4148 days | |
0.98 | 0% |
| Justin | 8/10 | 4148 days | |
0.98 | 0% |
| Alex | 8/10 | 4155 days | |
0.97 | 0% |
| Hilary | 7/10 | 4164 days | |
0.96 | 0% |
| Roran | 7/10 | 4174 days | |
0.94 | 0% |
| Nina | 10/10 | 4199 days | |
0.9 | 0% |
| Inga | 9/10 | 4199 days | |
0.9 | 0% |
| Italy | 8/10 | 4199 days | |
0.9 | 0% |
| Nina | 8/10 | 4199 days | |
0.9 | 0% |
| Helen | 7/10 | 4199 days | |
0.9 | 0% |
| JuanPablo | 7/10 | 4216 days | |
0.87 | 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
-5.38% 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 269 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 266 | -5.32% |
| 267 | -5.34% |
| 268 | -5.36% |
| 269 | -5.38% |
| 270 | -5.40% |
| 271 | -5.42% |
| 272 | -5.44% |
| … | … |
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.