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
74.54%
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 | 725 days | 20.55 | 100% | |
| Rado Hank | 8/10 | 1054 days |  |
5.0 | 24% |
| Matthias and Adriane | 9/10 | 1309 days | |
4.58 | 22% |
| Laure and Pascal | 9/10 | 1322 days | |
4.56 | 22% |
| Thomas Klinting | 10/10 | 1348 days | |
4.5 | 22% |
| Helna Saumanova | 9/10 | 1353 days | |
4.5 | 22% |
| Danny | 7/10 | 1405 days | |
4.0 | 19% |
| Marine Lavie | 8/10 | 1667 days | |
3.69 | 18% |
| Cate Ronke | 8/10 | 1670 days | |
3.68 | 18% |
| Stephan Friedrich | 9/10 | 1686 days | 3.84 | 19% | |
| Stula Vladimir | 10/10 | 1704 days | |
3.81 | 19% |
| Isabelle | 10/10 | 1707 days | |
3.8 | 18% |
| Mikkel Palleson | 7/10 | 1710 days | |
3.45 | 17% |
| Meilin | 5/10 | 1716 days | |
3.07 | 15% |
| Sebastian and Susanna | 7/10 | 1755 days | |
3.37 | 16% |
| Jakob Gerber | 7/10 | 1760 days | 3.37 | 16% | |
| Marie Weber | 9/10 | 2069 days | |
3.09 | 15% |
| Erik Hafuer | 4/10 | 2103 days | |
2.39 | 12% |
| Caroline Jonsson | 7/10 | 2368 days | |
2.28 | 11% |
| Jonny Ronnblom | 7/10 | 2368 days | |
2.28 | 11% |
| Catherine Schlachter | 9/10 | 2375 days | |
2.5 | 12% |
| Christina Perez | 8/10 | 2375 days | |
2.37 | 12% |
| Bea Westkam | 10/10 | 2384 days | |
2.48 | 12% |
| Julia Moellers | 8/10 | 2384 days | |
2.35 | 11% |
| Anne Haenchen | 8/10 | 2400 days | |
2.32 | 11% |
| Kathi | 8/10 | 2400 days | |
2.32 | 11% |
| Sophia | 7/10 | 2417 days | |
2.2 | 11% |
| Lukas | 6/10 | 2426 days | |
1.99 | 10% |
| Celine Darde | 8/10 | 2440 days | |
2.25 | 11% |
| Ludovic Denee | 8/10 | 2440 days | |
2.25 | 11% |
| Melanie Pretzel | 8/10 | 2767 days | |
1.64 | 8% |
| Frederic Birke | 8/10 | 2767 days | |
1.64 | 8% |
| Andre and Marina | 2/10 | 2798 days | |
1.25 | 6% |
| Hanneke P | 7/10 | 2824 days | 1.47 | 7% | |
| Joroen Borkert | 9/10 | 2842 days | |
1.58 | 8% |
| Roux | 8/10 | 2845 days | |
1.5 | 7% |
| Leo | 9/10 | 2859 days | |
1.55 | 8% |
| Lutz Huuemorder | 8/10 | 2861 days | |
1.47 | 7% |
| Henzen | 8/10 | 2864 days | |
1.46 | 7% |
| Tuedi Muggli | 10/10 | 3127 days | |
1.02 | 5% |
| Romla | 8/10 | 3137 days | |
0.95 | 5% |
| Ronald Veldman | 8/10 | 3137 days | |
0.95 | 5% |
| Richard | 8/10 | 3140 days | |
0.95 | 5% |
| Marie Dutron | 6/10 | 3140 days | |
0.83 | 4% |
| Carl & Desiree Potter | 9/10 | 3142 days | |
0.99 | 5% |
| Frans | 10/10 | 3142 days | |
0.99 | 5% |
| Preben vil Helmsen | 10/10 | 3142 days | |
0.99 | 5% |
| Johann Maier | 10/10 | 3143 days | |
0.99 | 5% |
| Gillian MacLaren | 8/10 | 3144 days | |
0.94 | 5% |
| Eline Vakentijn | 8/10 | 3144 days | |
0.94 | 5% |
| Langerak | 9/10 | 3146 days | |
0.99 | 5% |
| Magda Savels | 8/10 | 3152 days | |
0.93 | 5% |
| Roger ter Horst | 9/10 | 3154 days | |
0.97 | 5% |
| Maria Dietrich | 9/10 | 3154 days | |
0.97 | 5% |
| Samplonius | 8/10 | 3154 days | |
0.92 | 4% |
| Manuela Zimmerti | 9/10 | 3222 days | |
0.84 | 4% |
| Dirk Faupel | 9/10 | 3225 days | |
0.83 | 4% |
| Dirk Faupel | 9/10 | 3225 days | |
0.83 | 4% |
| Robert Carswell | 7/10 | 3227 days | |
0.75 | 4% |
| Marc & Pauline | 8/10 | 3227 days | |
0.79 | 4% |
| Gerard Crothers | 10/10 | 3228 days | |
0.83 | 4% |
| Steve Eley | 7/10 | 3230 days | |
0.75 | 4% |
| van Rees | 8/10 | 3230 days | |
0.78 | 4% |
| Ron & Hannah de Reuver | 9/10 | 3235 days | |
0.81 | 4% |
| Wolfgang Goggel | 9/10 | 3235 days | |
0.81 | 4% |
| Gary A | 7/10 | 3251 days | |
0.71 | 3% |
| Tina | 9/10 | 3251 days | |
0.78 | 4% |
| Jon_and_Family | 8/10 | 3465 days | 0.34 | 2% | |
| Franzi & Tobi | 9/10 | 3476 days | |
0.34 | 2% |
| Oliver Berg | 7/10 | 3479 days | |
0.3 | 1% |
| Marianne Wheatley | 10/10 | 3484 days | |
0.32 | 2% |
| Krabbe | 8/10 | 3487 days | |
0.3 | 1% |
| Rolf | 4/10 | 3487 days | |
0.25 | 1% |
| Malcolm Jones | 8/10 | 3489 days | |
0.3 | 1% |
| Berger | 8/10 | 3500 days | |
0.28 | 1% |
| Pieter | 9/10 | 3501 days | |
0.29 | 1% |
| mr Schumader | 9/10 | 3510 days | |
0.27 | 1% |
| Tamlin Barton | 6/10 | 3511 days | |
0.23 | 1% |
| Tim Van Nispen | 8/10 | 3512 days | |
0.26 | 1% |
| Johanna | 6/10 | 3513 days | |
0.22 | 1% |
| Eva Stauderova | 10/10 | 3515 days | |
0.26 | 1% |
| Patrick Decoster | 9/10 | 3517 days | |
0.26 | 1% |
| Liz Dolman | 8/10 | 3519 days | |
0.24 | 1% |
| Kay and Colin Yendole | 9/10 | 3520 days | |
0.25 | 1% |
| Chamton | 6/10 | 3524 days | |
0.2 | 1% |
| willsworthy | 9/10 | 3616 days | 0.07 | 0% | |
| allesca | 8/10 | 3647 days | 0.01 | 0% | |
| Bergemann | 8/10 | 3847 days | |
0.0 | 0% |
| Silke Seemann | 9/10 | 3852 days | |
0.0 | 0% |
| John Harrison | 8/10 | 3868 days | |
0.0 | 0% |
| Tanja Haring | 9/10 | 3874 days | |
0.0 | 0% |
| Amanda Hoff | 10/10 | 3889 days | 0.0 | 0% | |
| Beute Jacob | 8/10 | 3902 days | |
0.0 | 0% |
| Alies van der plank | 8/10 | 3906 days | |
0.0 | 0% |
| mariekef | 10/10 | 3935 days | |
0.0 | 0% |
| sanneb1 | 8/10 | 3936 days | |
0.0 | 0% |
| keane | 7/10 | 3936 days | |
0.0 | 0% |
| mariak | 8/10 | 3937 days | |
0.0 | 0% |
| usigmund | 8/10 | 3940 days | |
0.0 | 0% |
| hofstetterf | 10/10 | 3949 days | |
0.0 | 0% |
| Stefan Lua | 10/10 | 3953 days | |
0.0 | 0% |
| Peter Essink | 9/10 | 3953 days | |
0.0 | 0% |
| Wolfgang Mages | 10/10 | 3955 days | |
0.0 | 0% |
| Ann S | 10/10 | 3959 days | |
0.0 | 0% |
| Roeder Grit | 8/10 | 3962 days | |
0.0 | 0% |
| ulrichk | 10/10 | 4068 days | |
0.0 | 0% |
| gerrys | 7/10 | 4150 days | |
0.0 | 0% |
| RolandV | 10/10 | 4179 days | |
0.0 | 0% |
| GemmaC | 8/10 | 4184 days | |
0.0 | 0% |
| CeesVanW | 8/10 | 4192 days | |
0.0 | 0% |
| LaurensD | 7/10 | 4195 days | |
0.0 | 0% |
| StefanieA | 10/10 | 4197 days | |
0.0 | 0% |
| Hendrik Flier | 7/10 | 4201 days | |
0.0 | 0% |
| PBouwmessten | 9/10 | 4215 days | |
0.0 | 0% |
| MauzcoV | 9/10 | 4215 days | |
0.0 | 0% |
| marcusr | 9/10 | 4236 days | |
0.0 | 0% |
| Eugene | 10/10 | 4236 days | |
0.0 | 0% |
| Tony | 10/10 | 4243 days | |
0.0 | 0% |
| Ian S | 9/10 | 4244 days | |
0.0 | 0% |
| Miguel | 9/10 | 4246 days | |
0.0 | 0% |
| Thamar | 8/10 | 4259 days | |
0.0 | 0% |
| Andie | 10/10 | 4267 days | |
0.0 | 0% |
| Miranda | 8/10 | 4271 days | |
0.0 | 0% |
| Miha | 10/10 | 4300 days | |
0.0 | 0% |
| Gerits | 10/10 | 4308 days | |
0.0 | 0% |
| Sluijs | 10/10 | 4312 days | |
0.0 | 0% |
| olland | 10/10 | 4315 days | |
0.0 | 0% |
| Liz | 10/10 | 4334 days | |
0.0 | 0% |
| Stefan | 9/10 | 4359 days | |
0.0 | 0% |
| Cory Fusco | 8/10 | 4419 days | |
0.0 | 0% |
| Katie Wise | 10/10 | 4427 days | |
0.0 | 0% |
| Heckter | 7/10 | 4566 days | |
0.0 | 0% |
| Jennifer Baulch | 9/10 | 4571 days | |
0.0 | 0% |
| Nancy Dol | 7/10 | 4592 days | |
0.0 | 0% |
| David Buckley | 9/10 | 4595 days | |
0.0 | 0% |
| Jenny Hulsebosch | 9/10 | 4623 days | |
0.0 | 0% |
| Peter | 10/10 | 4664 days | |
0.0 | 0% |
| bart | 6/10 | 4669 days | |
0.0 | 0% |
| Miriam&Eva | 5/10 | 4885 days | |
0.0 | 0% |
| Dennis | 8/10 | 4942 days | |
0.0 | 0% |
| Arjan | 7/10 | 4956 days | |
0.0 | 0% |
| Meyer | 9/10 | 4958 days | |
0.0 | 0% |
| Lucy | 8/10 | 4960 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
-3.16% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 70 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 | -3.12% |
| 198 | -3.13% |
| 199 | -3.15% |
| 200 | -3.16% |
| 201 | -3.18% |
| 202 | -3.19% |
| 203 | -3.21% |
| … | … |
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.