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
90.33%
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 | 709 days |  |
34.33 | 100% |
| Thomas Klinting | 10/10 | 763 days | |
26.96 | 78% |
| Franz Mesey | 9/10 | 777 days | 21.02 | 61% | |
| Judit Van lanen | 10/10 | 796 days | |
23.0 | 66% |
| Jack Robinson | 8/10 | 834 days | |
18.95 | 54% |
| Mikulas and Dominika | 8/10 | 856 days | |
16.86 | 48% |
| Elizabeth Braidotti | 10/10 | 905 days | 10.72 | 30% | |
| Craig Forsyth | 10/10 | 1022 days | 5.84 | 16% | |
| Lea Behnem | 10/10 | 1096 days | |
6.0 | 16% |
| Nicolas Justin | 7/10 | 1440 days | |
5.43 | 14% |
| Stephanie Piou | 8/10 | 1440 days | |
5.43 | 14% |
| Alex | 9/10 | 1468 days | |
5.39 | 14% |
| Devan Sheppard | 10/10 | 1537 days | |
5.27 | 14% |
| Nina Coopmans | 7/10 | 2149 days | |
4.27 | 11% |
| Katherine | 10/10 | 2173 days | |
4.23 | 11% |
| Lieven De Vlaminck | 9/10 | 2179 days | |
4.22 | 11% |
| Andy | 10/10 | 2270 days | 3.39 | 8% | |
| Ron | 9/10 | 2274 days | |
4.06 | 10% |
| Bart Slingerland | 9/10 | 2529 days | |
3.64 | 9% |
| Birds Tubbs | 10/10 | 2530 days | |
3.64 | 9% |
| Malena | 10/10 | 2545 days | 3.01 | 7% | |
| Schael | 10/10 | 2549 days | |
3.61 | 9% |
| Ryan Pynappels | 9/10 | 2556 days | |
3.6 | 9% |
| Tobias Forst | 8/10 | 2637 days | |
3.47 | 9% |
| Sarah and Soren | 9/10 | 2642 days | |
3.46 | 9% |
| Alberto Redner | 10/10 | 2652 days | |
3.44 | 9% |
| Dozza | 10/10 | 2697 days | 2.81 | 7% | |
| Sarah James | 10/10 | 2879 days | |
3.07 | 7% |
| Nick Taylor | 10/10 | 2879 days | |
3.07 | 7% |
| Laurent Pouvreau | 10/10 | 2883 days | |
3.06 | 7% |
| Paap | 8/10 | 2916 days | |
3.01 | 7% |
| Wouter Jansen | 8/10 | 2916 days | |
3.01 | 7% |
| Luise Jaeger | 3/10 | 2929 days | |
2.76 | 6% |
| Steff | 9/10 | 2931 days | |
2.98 | 7% |
| wannaraft | 10/10 | 2939 days | 2.47 | 6% | |
| elpo | 6/10 | 3183 days | 2.14 | 5% | |
| kempt | 8/10 | 3214 days | 2.1 | 5% | |
| Andy | 8/10 | 3266 days | |
2.43 | 6% |
| Sam Bishop | 10/10 | 3276 days | 2.01 | 4% | |
| Kay Beaumont | 10/10 | 3278 days | |
2.41 | 5% |
| Johan | 10/10 | 3286 days | |
2.4 | 5% |
| Jakob Pedersen | 7/10 | 3286 days | |
2.4 | 5% |
| Jens van Evp | 9/10 | 3300 days | |
2.38 | 5% |
| Max Van der Zalm | 8/10 | 3300 days | |
2.38 | 5% |
| Carolina Gonzalez | 8/10 | 3302 days | |
2.37 | 5% |
| Kasper | 9/10 | 3302 days | |
2.37 | 5% |
| Chance McGuire | 10/10 | 3304 days | 1.97 | 4% | |
| katesc | 9/10 | 3355 days | |
2.28 | 5% |
| rosalindm | 9/10 | 3360 days | |
2.28 | 5% |
| jennyb | 9/10 | 3364 days | |
2.27 | 5% |
| Thomas Willi | 10/10 | 3376 days | |
2.25 | 5% |
| Jess Pasos | 10/10 | 3385 days | |
2.24 | 5% |
| Nikki Turner | 8/10 | 3530 days | |
2.0 | 4% |
| Sejna | 8/10 | 3551 days | |
1.96 | 4% |
| michellew | 10/10 | 3557 days | |
1.95 | 4% |
| erikholland | 8/10 | 3610 days | 1.55 | 3% | |
| mariea | 9/10 | 3621 days | |
1.85 | 4% |
| Krapels | 9/10 | 3634 days | |
1.83 | 4% |
| Halley | 5/10 | 3640 days | |
1.82 | 4% |
| Katie | 10/10 | 3658 days | |
1.79 | 4% |
| Ian S | 8/10 | 3659 days | |
1.79 | 4% |
| Debbie | 7/10 | 3660 days | |
1.78 | 4% |
| Daniel | 8/10 | 3669 days | |
1.77 | 4% |
| Kristy825 | 10/10 | 3672 days | 1.47 | 3% | |
| Limor | 6/10 | 3681 days | |
1.75 | 3% |
| Prentner | 6/10 | 3690 days | |
1.73 | 3% |
| Sonja | 9/10 | 3714 days | |
1.69 | 3% |
| Bronagh Mcartan | 9/10 | 3858 days | |
1.46 | 3% |
| Tim | 10/10 | 3882 days | |
1.42 | 3% |
| Brent Scanlan | 10/10 | 3951 days | |
1.31 | 2% |
| Meike Biel | 10/10 | 3959 days | |
1.29 | 2% |
| Hendrik | 6/10 | 4002 days | |
1.22 | 2% |
| Sabrina | 8/10 | 4002 days | |
1.22 | 2% |
| Peter Aston | 5/10 | 4002 days | |
1.22 | 2% |
| helga | 9/10 | 4003 days | 1.02 | 1% | |
| Janne | 8/10 | 4013 days | 1.0 | 1% | |
| Melissa Steedman | 9/10 | 4049 days | |
1.14 | 2% |
| gemma1 | 6/10 | 4053 days | 0.95 | 1% | |
| Francesco | 8/10 | 4084 days | |
1.09 | 2% |
| Jim&Rachel | 9/10 | 4166 days | |
0.95 | 1% |
| MarkReid | 10/10 | 4299 days | |
0.73 | 0% |
| HalRoberts | 8/10 | 4321 days | |
0.7 | 0% |
| David | 9/10 | 4330 days | |
0.68 | 0% |
| Justin | 8/10 | 4330 days | |
0.68 | 0% |
| Alex | 8/10 | 4337 days | |
0.67 | 0% |
| Hilary | 7/10 | 4346 days | |
0.66 | 0% |
| Roran | 7/10 | 4357 days | |
0.64 | 0% |
| Nina | 10/10 | 4382 days | |
0.6 | 0% |
| Inga | 9/10 | 4382 days | |
0.6 | 0% |
| Italy | 8/10 | 4382 days | |
0.6 | 0% |
| Nina | 8/10 | 4382 days | |
0.6 | 0% |
| Helen | 7/10 | 4382 days | |
0.6 | 0% |
| JuanPablo | 7/10 | 4399 days | |
0.57 | 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
83%
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.