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
92.11%
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 | 1242 days |  |
4.71 | 100% |
| Thomas Klinting | 10/10 | 1296 days | |
4.61 | 98% |
| Franz Mesey | 9/10 | 1310 days | 4.58 | 97% | |
| Judit Van lanen | 10/10 | 1329 days | |
4.54 | 96% |
| Jack Robinson | 8/10 | 1367 days | |
4.24 | 90% |
| Mikulas and Dominika | 8/10 | 1389 days | |
4.2 | 89% |
| Elizabeth Braidotti | 10/10 | 1439 days | 4.33 | 92% | |
| Craig Forsyth | 10/10 | 1555 days | 4.1 | 87% | |
| Lea Behnem | 10/10 | 1629 days | |
3.95 | 84% |
| Nicolas Justin | 7/10 | 1973 days | |
2.99 | 63% |
| Stephanie Piou | 8/10 | 1973 days | |
3.12 | 66% |
| Alex | 9/10 | 2001 days | |
3.23 | 68% |
| Devan Sheppard | 10/10 | 2070 days | |
3.09 | 66% |
| Nina Coopmans | 7/10 | 2682 days | |
1.72 | 37% |
| Katherine | 10/10 | 2706 days | |
1.85 | 39% |
| Lieven De Vlaminck | 9/10 | 2712 days | |
1.84 | 39% |
| Andy | 10/10 | 2803 days | 1.66 | 35% | |
| Ron | 9/10 | 2807 days | |
1.65 | 35% |
| Bart Slingerland | 9/10 | 3062 days | |
1.15 | 24% |
| Birds Tubbs | 10/10 | 3063 days | |
1.15 | 24% |
| Malena | 10/10 | 3078 days | 1.12 | 24% | |
| Schael | 10/10 | 3082 days | |
1.11 | 24% |
| Ryan Pynappels | 9/10 | 3089 days | |
1.1 | 23% |
| Tobias Forst | 8/10 | 3170 days | |
0.89 | 19% |
| Sarah and Soren | 9/10 | 3175 days | |
0.93 | 20% |
| Alberto Redner | 10/10 | 3185 days | |
0.91 | 19% |
| Dozza | 10/10 | 3230 days | 0.82 | 17% | |
| Sarah James | 10/10 | 3412 days | |
0.47 | 10% |
| Nick Taylor | 10/10 | 3412 days | |
0.47 | 10% |
| Laurent Pouvreau | 10/10 | 3416 days | |
0.46 | 10% |
| Paap | 8/10 | 3449 days | |
0.37 | 8% |
| Wouter Jansen | 8/10 | 3449 days | |
0.37 | 8% |
| Luise Jaeger | 3/10 | 3462 days | |
0.28 | 6% |
| Steff | 9/10 | 3464 days | |
0.36 | 8% |
| wannaraft | 10/10 | 3472 days | 0.35 | 7% | |
| elpo | 6/10 | 3717 days | 0.0 | 0% | |
| kempt | 8/10 | 3748 days | 0.0 | 0% | |
| Andy | 8/10 | 3799 days | |
0.0 | 0% |
| Sam Bishop | 10/10 | 3809 days | 0.0 | 0% | |
| Kay Beaumont | 10/10 | 3811 days | |
0.0 | 0% |
| Johan | 10/10 | 3819 days | |
0.0 | 0% |
| Jakob Pedersen | 7/10 | 3819 days | |
0.0 | 0% |
| Jens van Evp | 9/10 | 3833 days | |
0.0 | 0% |
| Max Van der Zalm | 8/10 | 3833 days | |
0.0 | 0% |
| Carolina Gonzalez | 8/10 | 3835 days | |
0.0 | 0% |
| Kasper | 9/10 | 3835 days | |
0.0 | 0% |
| Chance McGuire | 10/10 | 3837 days | 0.0 | 0% | |
| katesc | 9/10 | 3888 days | |
0.0 | 0% |
| rosalindm | 9/10 | 3893 days | |
0.0 | 0% |
| jennyb | 9/10 | 3897 days | |
0.0 | 0% |
| Thomas Willi | 10/10 | 3909 days | |
0.0 | 0% |
| Jess Pasos | 10/10 | 3918 days | |
0.0 | 0% |
| Nikki Turner | 8/10 | 4064 days | |
0.0 | 0% |
| Sejna | 8/10 | 4085 days | |
0.0 | 0% |
| michellew | 10/10 | 4091 days | |
0.0 | 0% |
| erikholland | 8/10 | 4143 days | 0.0 | 0% | |
| mariea | 9/10 | 4154 days | |
0.0 | 0% |
| Krapels | 9/10 | 4167 days | |
0.0 | 0% |
| Halley | 5/10 | 4173 days | |
0.0 | 0% |
| Katie | 10/10 | 4191 days | |
0.0 | 0% |
| Ian S | 8/10 | 4192 days | |
0.0 | 0% |
| Debbie | 7/10 | 4193 days | |
0.0 | 0% |
| Daniel | 8/10 | 4202 days | |
0.0 | 0% |
| Kristy825 | 10/10 | 4205 days | 0.0 | 0% | |
| Limor | 6/10 | 4214 days | |
0.0 | 0% |
| Prentner | 6/10 | 4223 days | |
0.0 | 0% |
| Sonja | 9/10 | 4247 days | |
0.0 | 0% |
| Bronagh Mcartan | 9/10 | 4391 days | |
0.0 | 0% |
| Tim | 10/10 | 4415 days | |
0.0 | 0% |
| Brent Scanlan | 10/10 | 4485 days | |
0.0 | 0% |
| Meike Biel | 10/10 | 4493 days | |
0.0 | 0% |
| Hendrik | 6/10 | 4535 days | |
0.0 | 0% |
| Sabrina | 8/10 | 4535 days | |
0.0 | 0% |
| Peter Aston | 5/10 | 4535 days | |
0.0 | 0% |
| helga | 9/10 | 4536 days | 0.0 | 0% | |
| Janne | 8/10 | 4546 days | 0.0 | 0% | |
| Melissa Steedman | 9/10 | 4582 days | |
0.0 | 0% |
| gemma1 | 6/10 | 4586 days | 0.0 | 0% | |
| Francesco | 8/10 | 4617 days | |
0.0 | 0% |
| Jim&Rachel | 9/10 | 4700 days | |
0.0 | 0% |
| MarkReid | 10/10 | 4833 days | |
0.0 | 0% |
| HalRoberts | 8/10 | 4855 days | |
0.0 | 0% |
| David | 9/10 | 4864 days | |
0.0 | 0% |
| Justin | 8/10 | 4864 days | |
0.0 | 0% |
| Alex | 8/10 | 4871 days | |
0.0 | 0% |
| Hilary | 7/10 | 4880 days | |
0.0 | 0% |
| Roran | 7/10 | 4890 days | |
0.0 | 0% |
| Nina | 10/10 | 4915 days | |
0.0 | 0% |
| Inga | 9/10 | 4915 days | |
0.0 | 0% |
| Italy | 8/10 | 4915 days | |
0.0 | 0% |
| Nina | 8/10 | 4915 days | |
0.0 | 0% |
| Helen | 7/10 | 4915 days | |
0.0 | 0% |
| JuanPablo | 7/10 | 4932 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
-2.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 121 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 | -2.12% |
| 198 | -2.13% |
| 199 | -2.14% |
| 200 | -2.15% |
| 201 | -2.16% |
| 202 | -2.17% |
| 203 | -2.18% |
| … | … |
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.