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 Te Anau Glowworm Caves.
If you have any questions or comments about our ranking score calculation please get in touch at firstname.lastname@example.org. We don't believe this is perfect or complete so we're always interested in ways we might make improvements.
190 Valid Reviews
The Te Anau Glowworm Caves experience has a total of 191 reviews. There are 190 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 190 valid reviews:
The raw data average (mean) for all the Te Anau Glowworm Caves valid reviews is 82.05% and is based on 190 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.
176 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 190 valid reviews, the experience has 176 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 176 face-to-face reviews:
The raw data average (mean) for all the Te Anau Glowworm Caves face-to-face reviews is 82.10% and is based on 176 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.
|Dorothy and Graham Glen||9/10||1450 days||100%|
|Dan Coates||9/10||1683 days||89%|
|Barbara Knops||9/10||1776 days||85%|
|Manu Liberta||10/10||1786 days||85%|
|Kirsty Smith||10/10||1819 days||83%|
|Sophia Satter||8/10||1830 days||78%|
|Afiya Levy||10/10||2051 days||72%|
|Johannes Eisel||6/10||2060 days||60%|
|Alexander Mattea||5/10||2060 days||58%|
|Timea Bagosi||9/10||2062 days||72%|
|Benoit Leclerc||7/10||2078 days||65%|
|Anna Stoehr||10/10||2096 days||70%|
|Kai Krchmar||6/10||2149 days||56%|
|Kristina Farkas||5/10||2444 days||44%|
|Sophia Kadel||10/10||2474 days||53%|
|Laura and Marie||7/10||2480 days||48%|
|Rachel S||10/10||2487 days||52%|
|Joris Giullemot||8/10||2796 days||36%|
|Laura Metz||7/10||2807 days||34%|
|Hubertus Thost||7/10||2807 days||34%|
|S B||10/10||2835 days||36%|
|M K||10/10||2835 days||36%|
|Maya Bakker-deDreu||8/10||2843 days||34%|
|Christin Woelk||9/10||3123 days||23%|
|Maria Klister||7/10||3143 days||20%|
|Lydia Kleinkoenen||9/10||3163 days||21%|
|Jessica Grewe||9/10||3163 days||21%|
|Hannah Lia-Isis Kubillus||9/10||3163 days||21%|
|Jan Zimmerman||8/10||3174 days||20%|
|Margaret and Derek McNeil||10/10||3234 days||18%|
|Frank and Suzanne||8/10||3249 days||17%|
|Marcel & Kim Meichtry||7/10||3530 days||4%|
|Howell Davies||5/10||3533 days||3%|
|Pete & Pat Etheridge||8/10||3533 days||4%|
|Siegfried Richter||7/10||3534 days||4%|
|Melanie Mathiak||10/10||3536 days||4%|
|Sig Schrattner||8/10||3536 days||4%|
|Rebecca Doehl||7/10||3537 days||4%|
|Seth & Carla||7/10||3538 days||4%|
|Gabriele Wendt||9/10||3538 days||4%|
|Tadej Ferjan||8/10||3538 days||4%|
|Mary Mitchell||10/10||3538 days||4%|
|Emily Wikston||9/10||3539 days||4%|
|Andreas & Leonie Fehr||10/10||3545 days||4%|
|Horst Langstein||9/10||3546 days||4%|
|Marco Scheiber||9/10||3547 days||4%|
|Friedrich Kaltner||10/10||3549 days||4%|
|Frank & Julia||10/10||3552 days||4%|
|Thyg Lingdal||10/10||3552 days||4%|
|Nicole van Bergen||8/10||3552 days||3%|
|Mike & April Prince||7/10||3566 days||3%|
|Alfred & Henrike||8/10||3578 days||2%|
|Lyn Stainton||6/10||3627 days||0%|
|Ken Talan||10/10||3855 days||23%|
|Katarina Bokor||8/10||3867 days||21%|
|Mark Franklin||6/10||3867 days||19%|
|Gordon Agent||10/10||3867 days||23%|
|Maureen Hardy||8/10||3867 days||21%|
|AJ van Pelt||8/10||3867 days||21%|
|Werner and Rita||9/10||3874 days||23%|
|Richard Dudfield||10/10||3876 days||23%|
|Urs and Isabella||7/10||3877 days||20%|
|Juliane Kleiu||10/10||3880 days||23%|
|Linda Kremer||9/10||3881 days||23%|
|Rebecca Johnston||9/10||3881 days||23%|
|David Mellard||10/10||3882 days||23%|
|Bruce & Elaine Chote||10/10||3882 days||23%|
|Paul Nickson||8/10||3882 days||21%|
|Beat & Connie||10/10||3884 days||23%|
|Alex Stil||9/10||3884 days||23%|
|Pein van Nosrt||7/10||3889 days||20%|
|Elise van Haastert||8/10||3889 days||21%|
|Carolin Ranner||6/10||3891 days||19%|
|Judith K.||6/10||3908 days||19%|
|Ruben and Jetske||7/10||3908 days||20%|
|Roy Seymour||9/10||3909 days||23%|
|Tom Hill||10/10||3913 days||23%|
|Ruua Reyrink||7/10||3914 days||20%|
|Patrick Hugener||9/10||3914 days||23%|
|Don & Geraldine||10/10||4230 days||23%|
|Matthias & Ceristiane||8/10||4242 days||21%|
|Hilary and Chris Ayton||9/10||4243 days||23%|
|Lis & Rob Tate||9/10||4245 days||23%|
|Bob Kusesia||10/10||4256 days||23%|
|Yssel de Schepper||7/10||4261 days||20%|
|Janny Meerdinnk Veldboow||7/10||4261 days||20%|
|Arie Ascher||9/10||4262 days||23%|
|Wolfgang Engelke||10/10||4264 days||23%|
|Thomas K||9/10||4264 days||23%|
|Mattias Thorm||9/10||4277 days||23%|
|Vincente Garrido||4/10||4278 days||18%|
|R Gilge||10/10||4279 days||23%|
|Erik Hummelmose||8/10||4279 days||21%|
|Ian E||6/10||4279 days||19%|
|Nadine Schaee||9/10||4280 days||23%|
|Belinda Godhard||2/10||4280 days||17%|
|Uwe Rieper||10/10||4282 days||23%|
|E.M. Prideaux||10/10||4297 days||23%|
|Elizabeth E||8/10||4299 days||21%|
|Stevens Frans||8/10||4300 days||21%|
|Heinrich Hax||9/10||4303 days||23%|
|Stephanie Steiner||8/10||4349 days||21%|
|Julia May||9/10||4356 days||23%|
|X Neils||7/10||4367 days||20%|
|Sarah Smith||5/10||4371 days||18%|
|Debbie Mossman||9/10||4664 days||23%|
|Jennifer Baulch||7/10||4965 days||20%|
|George Jeffs||10/10||4968 days||23%|
|D.A. Mulder||8/10||4988 days||21%|
|Cole Penelope||8/10||4993 days||21%|
|Pauline Thai||8/10||5008 days||21%|
|Dan Adamson||8/10||5008 days||21%|
|Stephen Brightman||8/10||5017 days||21%|
|Madeleine Rowland||8/10||5017 days||21%|
|Bronwyn Gaby||9/10||5035 days||23%|
|Rolf Kruger||10/10||5367 days||23%|
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 Te Anau Glowworm Caves 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 54 days. However the Te Anau Glowworm Caves 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 Te Anau Glowworm Caves 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 email@example.com.