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 email@example.com. We don't believe this is perfect or complete so we're always interested in ways we might make improvements.
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:
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.
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.
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:
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.
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.
|Rado Hank||8/10||1121 days||4.7||31%|
|Matthias and Adriane||9/10||1376 days||4.45||30%|
|Laure and Pascal||9/10||1389 days||4.42||29%|
|Thomas Klinting||10/10||1415 days||4.37||29%|
|Helna Saumanova||9/10||1420 days||4.36||29%|
|Marine Lavie||8/10||1734 days||3.56||24%|
|Cate Ronke||8/10||1737 days||3.56||24%|
|Stephan Friedrich||9/10||1753 days||3.71||25%|
|Stula Vladimir||10/10||1771 days||3.68||24%|
|Mikkel Palleson||7/10||1777 days||3.34||22%|
|Sebastian and Susanna||7/10||1822 days||3.26||22%|
|Jakob Gerber||7/10||1827 days||3.25||22%|
|Marie Weber||9/10||2136 days||2.96||20%|
|Erik Hafuer||4/10||2170 days||2.29||15%|
|Caroline Jonsson||7/10||2435 days||2.16||14%|
|Jonny Ronnblom||7/10||2435 days||2.16||14%|
|Catherine Schlachter||9/10||2442 days||2.36||16%|
|Christina Perez||8/10||2442 days||2.25||15%|
|Bea Westkam||10/10||2451 days||2.35||16%|
|Julia Moellers||8/10||2451 days||2.23||15%|
|Anne Haenchen||8/10||2467 days||2.2||15%|
|Celine Darde||8/10||2507 days||2.12||14%|
|Ludovic Denee||8/10||2507 days||2.12||14%|
|Melanie Pretzel||8/10||2834 days||1.52||10%|
|Frederic Birke||8/10||2834 days||1.52||10%|
|Andre and Marina||2/10||2865 days||1.15||8%|
|Hanneke P||7/10||2891 days||1.35||9%|
|Joroen Borkert||9/10||2909 days||1.45||10%|
|Lutz Huuemorder||8/10||2928 days||1.34||9%|
|Tuedi Muggli||10/10||3194 days||0.89||6%|
|Ronald Veldman||8/10||3204 days||0.83||6%|
|Marie Dutron||6/10||3207 days||0.72||5%|
|Carl & Desiree Potter||9/10||3209 days||0.86||6%|
|Preben vil Helmsen||10/10||3209 days||0.86||6%|
|Johann Maier||10/10||3210 days||0.86||6%|
|Gillian MacLaren||8/10||3211 days||0.82||5%|
|Eline Vakentijn||8/10||3211 days||0.82||5%|
|Magda Savels||8/10||3219 days||0.8||5%|
|Roger ter Horst||9/10||3221 days||0.84||6%|
|Maria Dietrich||9/10||3221 days||0.84||6%|
|Manuela Zimmerti||9/10||3289 days||0.71||5%|
|Dirk Faupel||9/10||3292 days||0.7||5%|
|Dirk Faupel||9/10||3292 days||0.7||5%|
|Robert Carswell||7/10||3294 days||0.63||4%|
|Marc & Pauline||8/10||3294 days||0.66||4%|
|Gerard Crothers||10/10||3295 days||0.69||5%|
|Steve Eley||7/10||3297 days||0.63||4%|
|van Rees||8/10||3297 days||0.66||4%|
|Ron & Hannah de Reuver||9/10||3302 days||0.68||5%|
|Wolfgang Goggel||9/10||3302 days||0.68||5%|
|Gary A||7/10||3318 days||0.59||4%|
|Franzi & Tobi||9/10||3543 days||0.21||1%|
|Oliver Berg||7/10||3546 days||0.19||1%|
|Marianne Wheatley||10/10||3551 days||0.19||1%|
|Malcolm Jones||8/10||3556 days||0.17||1%|
|mr Schumader||9/10||3577 days||0.14||1%|
|Tamlin Barton||6/10||3578 days||0.12||1%|
|Tim Van Nispen||8/10||3579 days||0.13||1%|
|Eva Stauderova||10/10||3582 days||0.13||1%|
|Patrick Decoster||9/10||3584 days||0.13||1%|
|Liz Dolman||8/10||3586 days||0.12||1%|
|Kay and Colin Yendole||9/10||3587 days||0.12||1%|
|Silke Seemann||9/10||3919 days||0.0||0%|
|John Harrison||8/10||3935 days||0.0||0%|
|Tanja Haring||9/10||3941 days||0.0||0%|
|Amanda Hoff||10/10||3956 days||0.0||0%|
|Beute Jacob||8/10||3969 days||0.0||0%|
|Alies van der plank||8/10||3973 days||0.0||0%|
|Stefan Lua||10/10||4020 days||0.0||0%|
|Peter Essink||9/10||4020 days||0.0||0%|
|Wolfgang Mages||10/10||4022 days||0.0||0%|
|Ann S||10/10||4026 days||0.0||0%|
|Roeder Grit||8/10||4029 days||0.0||0%|
|Hendrik Flier||7/10||4268 days||0.0||0%|
|Ian S||9/10||4311 days||0.0||0%|
|Cory Fusco||8/10||4486 days||0.0||0%|
|Katie Wise||10/10||4494 days||0.0||0%|
|Jennifer Baulch||9/10||4638 days||0.0||0%|
|Nancy Dol||7/10||4659 days||0.0||0%|
|David Buckley||9/10||4662 days||0.0||0%|
|Jenny Hulsebosch||9/10||4690 days||0.0||0%|
Several adjustments to the weighted average are added to improve relevancy and credibility. These adjustments apply equally to all experiences that meet the criteria.
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.
There may be an adjustment if this experience hasn't received any reviews within the last 43 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.
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 firstname.lastname@example.org.