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 Waimangu Volcanic Valley.
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.
Waimangu Volcanic Valley
Valid Reviews
143 Valid Reviews
The Waimangu Volcanic Valley experience has a total of 143 valid reviews. There are no invalid reviews 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 143 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 30 |
|
21% |
| 9/10 | 37 |
|
26% |
| 8/10 | 45 |
|
31% |
| 7/10 | 19 |
|
13% |
| 6/10 | 6 |
|
4% |
| 5/10 | 2 |
|
1% |
| 4/10 | 2 |
|
1% |
| 3/10 | 1 |
|
1% |
| 2/10 | 1 |
|
1% |
| 1/10 | 0 |
|
0% |
82.87% Average
The raw data average (mean) for all the Waimangu Volcanic Valley valid reviews is 82.87% and is based on 143 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
135 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 143 valid reviews, the experience has 135 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 135 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 29 |
|
21% |
| 9/10 | 35 |
|
26% |
| 8/10 | 43 |
|
32% |
| 7/10 | 17 |
|
13% |
| 6/10 | 6 |
|
4% |
| 5/10 | 2 |
|
1% |
| 4/10 | 2 |
|
1% |
| 3/10 | 0 |
|
0% |
| 2/10 | 1 |
|
1% |
| 1/10 | 0 |
|
0% |
83.26% Average
The raw data average (mean) for all the Waimangu Volcanic Valley face-to-face reviews is 83.26% and is based on 135 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
73.76%
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 |
|---|---|---|---|---|---|
| Dave | 3/10 | 682 days | 24.66 | 100% | |
| Rado Hank | 8/10 | 1011 days |  |
5.81 | 24% |
| Matthias and Adriane | 9/10 | 1266 days | |
4.67 | 19% |
| Laure and Pascal | 9/10 | 1279 days | |
4.64 | 19% |
| Thomas Klinting | 10/10 | 1305 days | |
4.59 | 19% |
| Helna Saumanova | 9/10 | 1310 days | |
4.58 | 19% |
| Danny | 7/10 | 1362 days | |
4.07 | 17% |
| Marine Lavie | 8/10 | 1624 days | |
3.77 | 15% |
| Cate Ronke | 8/10 | 1627 days | |
3.76 | 15% |
| Stephan Friedrich | 9/10 | 1643 days | 3.93 | 16% | |
| Stula Vladimir | 10/10 | 1661 days | |
3.89 | 16% |
| Isabelle | 10/10 | 1664 days | |
3.89 | 16% |
| Mikkel Palleson | 7/10 | 1667 days | |
3.53 | 14% |
| Meilin | 5/10 | 1673 days | |
3.13 | 13% |
| Sebastian and Susanna | 7/10 | 1712 days | |
3.45 | 14% |
| Jakob Gerber | 7/10 | 1717 days | 3.44 | 14% | |
| Marie Weber | 9/10 | 2026 days | |
3.18 | 13% |
| Erik Hafuer | 4/10 | 2060 days | |
2.46 | 10% |
| Caroline Jonsson | 7/10 | 2325 days | |
2.36 | 10% |
| Jonny Ronnblom | 7/10 | 2325 days | |
2.36 | 10% |
| Catherine Schlachter | 9/10 | 2332 days | |
2.58 | 10% |
| Christina Perez | 8/10 | 2332 days | |
2.45 | 10% |
| Bea Westkam | 10/10 | 2341 days | |
2.56 | 10% |
| Julia Moellers | 8/10 | 2341 days | |
2.43 | 10% |
| Anne Haenchen | 8/10 | 2357 days | |
2.4 | 10% |
| Kathi | 8/10 | 2357 days | |
2.4 | 10% |
| Sophia | 7/10 | 2374 days | |
2.27 | 9% |
| Lukas | 6/10 | 2383 days | |
2.06 | 8% |
| Celine Darde | 8/10 | 2397 days | |
2.33 | 9% |
| Ludovic Denee | 8/10 | 2397 days | |
2.33 | 9% |
| Melanie Pretzel | 8/10 | 2724 days | |
1.72 | 7% |
| Frederic Birke | 8/10 | 2724 days | |
1.72 | 7% |
| Andre and Marina | 2/10 | 2755 days | |
1.31 | 5% |
| Hanneke P | 7/10 | 2781 days | 1.55 | 6% | |
| Joroen Borkert | 9/10 | 2799 days | |
1.67 | 7% |
| Roux | 8/10 | 2802 days | |
1.58 | 6% |
| Leo | 9/10 | 2816 days | |
1.63 | 7% |
| Lutz Huuemorder | 8/10 | 2818 days | |
1.55 | 6% |
| Henzen | 8/10 | 2821 days | |
1.54 | 6% |
| Tuedi Muggli | 10/10 | 3084 days | |
1.11 | 4% |
| Romla | 8/10 | 3094 days | |
1.03 | 4% |
| Ronald Veldman | 8/10 | 3094 days | |
1.03 | 4% |
| Richard | 8/10 | 3097 days | |
1.03 | 4% |
| Marie Dutron | 6/10 | 3097 days | |
0.9 | 4% |
| Carl & Desiree Potter | 9/10 | 3099 days | |
1.08 | 4% |
| Frans | 10/10 | 3099 days | |
1.08 | 4% |
| Preben vil Helmsen | 10/10 | 3099 days | |
1.08 | 4% |
| Johann Maier | 10/10 | 3100 days | |
1.08 | 4% |
| Gillian MacLaren | 8/10 | 3101 days | |
1.02 | 4% |
| Eline Vakentijn | 8/10 | 3101 days | |
1.02 | 4% |
| Langerak | 9/10 | 3103 days | |
1.07 | 4% |
| Magda Savels | 8/10 | 3109 days | |
1.01 | 4% |
| Roger ter Horst | 9/10 | 3111 days | |
1.05 | 4% |
| Maria Dietrich | 9/10 | 3111 days | |
1.05 | 4% |
| Samplonius | 8/10 | 3111 days | |
1.0 | 4% |
| Manuela Zimmerti | 9/10 | 3179 days | |
0.92 | 4% |
| Dirk Faupel | 9/10 | 3182 days | |
0.92 | 4% |
| Dirk Faupel | 9/10 | 3182 days | |
0.92 | 4% |
| Robert Carswell | 7/10 | 3184 days | |
0.83 | 3% |
| Marc & Pauline | 8/10 | 3184 days | |
0.87 | 4% |
| Gerard Crothers | 10/10 | 3185 days | |
0.91 | 4% |
| Steve Eley | 7/10 | 3187 days | |
0.82 | 3% |
| van Rees | 8/10 | 3187 days | |
0.86 | 3% |
| Ron & Hannah de Reuver | 9/10 | 3192 days | |
0.9 | 4% |
| Wolfgang Goggel | 9/10 | 3192 days | |
0.9 | 4% |
| Gary A | 7/10 | 3208 days | |
0.79 | 3% |
| Tina | 9/10 | 3208 days | |
0.86 | 4% |
| Jon_and_Family | 8/10 | 3422 days | 0.42 | 2% | |
| Franzi & Tobi | 9/10 | 3433 days | |
0.42 | 2% |
| Oliver Berg | 7/10 | 3436 days | |
0.38 | 2% |
| Marianne Wheatley | 10/10 | 3441 days | |
0.41 | 2% |
| Krabbe | 8/10 | 3444 days | |
0.38 | 2% |
| Rolf | 4/10 | 3444 days | |
0.32 | 1% |
| Malcolm Jones | 8/10 | 3446 days | |
0.38 | 2% |
| Berger | 8/10 | 3457 days | |
0.36 | 1% |
| Pieter | 9/10 | 3458 days | |
0.38 | 2% |
| mr Schumader | 9/10 | 3467 days | |
0.36 | 1% |
| Tamlin Barton | 6/10 | 3468 days | |
0.3 | 1% |
| Tim Van Nispen | 8/10 | 3469 days | |
0.34 | 1% |
| Johanna | 6/10 | 3470 days | |
0.29 | 1% |
| Eva Stauderova | 10/10 | 3472 days | |
0.35 | 1% |
| Patrick Decoster | 9/10 | 3474 days | |
0.34 | 1% |
| Liz Dolman | 8/10 | 3476 days | |
0.32 | 1% |
| Kay and Colin Yendole | 9/10 | 3477 days | |
0.34 | 1% |
| Chamton | 6/10 | 3481 days | |
0.27 | 1% |
| willsworthy | 9/10 | 3573 days | 0.15 | 1% | |
| allesca | 8/10 | 3604 days | 0.09 | 0% | |
| Bergemann | 8/10 | 3804 days | |
0.0 | 0% |
| Silke Seemann | 9/10 | 3809 days | |
0.0 | 0% |
| John Harrison | 8/10 | 3825 days | |
0.0 | 0% |
| Tanja Haring | 9/10 | 3831 days | |
0.0 | 0% |
| Amanda Hoff | 10/10 | 3846 days | 0.0 | 0% | |
| Beute Jacob | 8/10 | 3859 days | |
0.0 | 0% |
| Alies van der plank | 8/10 | 3863 days | |
0.0 | 0% |
| mariekef | 10/10 | 3892 days | |
0.0 | 0% |
| sanneb1 | 8/10 | 3893 days | |
0.0 | 0% |
| keane | 7/10 | 3893 days | |
0.0 | 0% |
| mariak | 8/10 | 3894 days | |
0.0 | 0% |
| usigmund | 8/10 | 3897 days | |
0.0 | 0% |
| hofstetterf | 10/10 | 3906 days | |
0.0 | 0% |
| Stefan Lua | 10/10 | 3910 days | |
0.0 | 0% |
| Peter Essink | 9/10 | 3910 days | |
0.0 | 0% |
| Wolfgang Mages | 10/10 | 3912 days | |
0.0 | 0% |
| Ann S | 10/10 | 3916 days | |
0.0 | 0% |
| Roeder Grit | 8/10 | 3919 days | |
0.0 | 0% |
| ulrichk | 10/10 | 4025 days | |
0.0 | 0% |
| gerrys | 7/10 | 4107 days | |
0.0 | 0% |
| RolandV | 10/10 | 4136 days | |
0.0 | 0% |
| GemmaC | 8/10 | 4141 days | |
0.0 | 0% |
| CeesVanW | 8/10 | 4149 days | |
0.0 | 0% |
| LaurensD | 7/10 | 4152 days | |
0.0 | 0% |
| StefanieA | 10/10 | 4154 days | |
0.0 | 0% |
| Hendrik Flier | 7/10 | 4158 days | |
0.0 | 0% |
| PBouwmessten | 9/10 | 4172 days | |
0.0 | 0% |
| MauzcoV | 9/10 | 4172 days | |
0.0 | 0% |
| marcusr | 9/10 | 4194 days | |
0.0 | 0% |
| Eugene | 10/10 | 4194 days | |
0.0 | 0% |
| Tony | 10/10 | 4201 days | |
0.0 | 0% |
| Ian S | 9/10 | 4202 days | |
0.0 | 0% |
| Miguel | 9/10 | 4203 days | |
0.0 | 0% |
| Thamar | 8/10 | 4217 days | |
0.0 | 0% |
| Andie | 10/10 | 4224 days | |
0.0 | 0% |
| Miranda | 8/10 | 4229 days | |
0.0 | 0% |
| Miha | 10/10 | 4257 days | |
0.0 | 0% |
| Gerits | 10/10 | 4265 days | |
0.0 | 0% |
| Sluijs | 10/10 | 4269 days | |
0.0 | 0% |
| olland | 10/10 | 4273 days | |
0.0 | 0% |
| Liz | 10/10 | 4292 days | |
0.0 | 0% |
| Stefan | 9/10 | 4316 days | |
0.0 | 0% |
| Cory Fusco | 8/10 | 4377 days | |
0.0 | 0% |
| Katie Wise | 10/10 | 4385 days | |
0.0 | 0% |
| Heckter | 7/10 | 4523 days | |
0.0 | 0% |
| Jennifer Baulch | 9/10 | 4528 days | |
0.0 | 0% |
| Nancy Dol | 7/10 | 4549 days | |
0.0 | 0% |
| David Buckley | 9/10 | 4552 days | |
0.0 | 0% |
| Jenny Hulsebosch | 9/10 | 4580 days | |
0.0 | 0% |
| Peter | 10/10 | 4621 days | |
0.0 | 0% |
| bart | 6/10 | 4626 days | |
0.0 | 0% |
| Miriam&Eva | 5/10 | 4842 days | |
0.0 | 0% |
| Dennis | 8/10 | 4899 days | |
0.0 | 0% |
| Arjan | 7/10 | 4913 days | |
0.0 | 0% |
| Meyer | 9/10 | 4915 days | |
0.0 | 0% |
| Lucy | 8/10 | 4917 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 Waimangu Volcanic Valley experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-2.28% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 115 days. However the Waimangu Volcanic Valley 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 Waimangu Volcanic Valley experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -2.24% |
| 198 | -2.26% |
| 199 | -2.27% |
| 200 | -2.28% |
| 201 | -2.29% |
| 202 | -2.30% |
| 203 | -2.31% |
| … | … |
Final Ranking Score
71%
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.