G'day, 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 info@rankers.co.nz. 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:
Rating | Count | Percentage | |
---|---|---|---|
10/10 | 49 |
|
26% |
9/10 | 43 |
|
23% |
8/10 | 41 |
|
22% |
7/10 | 34 |
|
18% |
6/10 | 9 |
|
5% |
5/10 | 8 |
|
4% |
4/10 | 5 |
|
3% |
3/10 | 0 |
|
0% |
2/10 | 1 |
|
1% |
1/10 | 0 |
|
0% |
82.05% Average
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.
More about face-to-face reviews
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:
Rating | Count | Percentage | |
---|---|---|---|
10/10 | 45 |
|
26% |
9/10 | 39 |
|
22% |
8/10 | 38 |
|
22% |
7/10 | 34 |
|
19% |
6/10 | 8 |
|
5% |
5/10 | 8 |
|
5% |
4/10 | 3 |
|
2% |
3/10 | 0 |
|
0% |
2/10 | 1 |
|
1% |
1/10 | 0 |
|
0% |
82.10% Average
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.
83.53%
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 | Relative Weight |
---|---|---|---|
Dorothy and Graham Glen | 9/10 | 2660 days | 100% |
Dan Coates | 9/10 | 2893 days | 86% |
Dominik | 9/10 | 2893 days | 86% |
Holloway | 10/10 | 2916 days | 86% |
Christina | 6/10 | 2984 days | 70% |
Barbara Knops | 9/10 | 2986 days | 81% |
Manu Liberta | 10/10 | 2996 days | 81% |
Bruno | 9/10 | 3006 days | 80% |
Kirsty Smith | 10/10 | 3029 days | 79% |
Sophia Satter | 8/10 | 3040 days | 77% |
Afiya Levy | 10/10 | 3261 days | 66% |
Johannes Eisel | 6/10 | 3270 days | 56% |
Alexander Mattea | 5/10 | 3270 days | 49% |
Timea Bagosi | 9/10 | 3273 days | 64% |
Riviere | 8/10 | 3284 days | 63% |
Dani | 8/10 | 3286 days | 63% |
Benoit Leclerc | 7/10 | 3288 days | 60% |
Anna Stoehr | 10/10 | 3306 days | 63% |
Kai Krchmar | 6/10 | 3359 days | 51% |
Kristina Farkas | 5/10 | 3654 days | 32% |
Sophia Kadel | 10/10 | 3684 days | 41% |
Laura and Marie | 7/10 | 3690 days | 37% |
Rachel S | 10/10 | 3698 days | 40% |
Joris Giullemot | 8/10 | 4006 days | 21% |
Laura Metz | 7/10 | 4017 days | 20% |
Hubertus Thost | 7/10 | 4017 days | 20% |
Amanda | 4/10 | 4032 days | 13% |
S B | 10/10 | 4045 days | 19% |
M K | 10/10 | 4045 days | 19% |
Maya Bakker-deDreu | 8/10 | 4053 days | 18% |
Christin Woelk | 9/10 | 4333 days | 2% |
Maria Klister | 7/10 | 4353 days | 1% |
Lydia Kleinkoenen | 9/10 | 4373 days | 0% |
Jessica Grewe | 9/10 | 4373 days | 0% |
Hannah Lia-Isis Kubillus | 9/10 | 4373 days | 0% |
Jan Zimmerman | 8/10 | 4384 days | 29% |
Margaret and Derek McNeil | 10/10 | 4444 days | 30% |
Frank and Suzanne | 8/10 | 4459 days | 29% |
RollingMoon | 8/10 | 4520 days | 29% |
Marcel & Kim Meichtry | 7/10 | 4740 days | 28% |
Howell Davies | 5/10 | 4743 days | 23% |
Baas | 7/10 | 4743 days | 28% |
Pete & Pat Etheridge | 8/10 | 4743 days | 29% |
Siegfried Richter | 7/10 | 4744 days | 28% |
Melanie Mathiak | 10/10 | 4746 days | 30% |
Sig Schrattner | 8/10 | 4746 days | 29% |
Rebecca Doehl | 7/10 | 4747 days | 28% |
Seth & Carla | 7/10 | 4748 days | 28% |
Gabriele Wendt | 9/10 | 4748 days | 29% |
Tadej Ferjan | 8/10 | 4748 days | 29% |
Mary Mitchell | 10/10 | 4748 days | 30% |
Emily Wikston | 9/10 | 4749 days | 29% |
Andreas & Leonie Fehr | 10/10 | 4755 days | 30% |
Horst Langstein | 9/10 | 4756 days | 29% |
Marco Scheiber | 9/10 | 4757 days | 29% |
Friedrich Kaltner | 10/10 | 4759 days | 30% |
Frank & Julia | 10/10 | 4762 days | 30% |
Thyg Lingdal | 10/10 | 4762 days | 30% |
Nicole van Bergen | 8/10 | 4762 days | 29% |
Mike & April Prince | 7/10 | 4776 days | 28% |
Alfred & Henrike | 8/10 | 4788 days | 29% |
Lyn Stainton | 6/10 | 4837 days | 26% |
Ken Talan | 10/10 | 5065 days | 30% |
Jon_and_Family | 9/10 | 5069 days | 29% |
Gertz | 10/10 | 5073 days | 30% |
Katarina Bokor | 8/10 | 5077 days | 29% |
Mark Franklin | 6/10 | 5077 days | 26% |
Gordon Agent | 10/10 | 5077 days | 30% |
Maureen Hardy | 8/10 | 5077 days | 29% |
AJ van Pelt | 8/10 | 5077 days | 29% |
Werner and Rita | 9/10 | 5084 days | 29% |
Richard Dudfield | 10/10 | 5086 days | 30% |
Sayaka | 7/10 | 5086 days | 28% |
Urs and Isabella | 7/10 | 5087 days | 28% |
Juliane Kleiu | 10/10 | 5090 days | 30% |
Linda Kremer | 9/10 | 5091 days | 29% |
Rebecca Johnston | 9/10 | 5091 days | 29% |
David Mellard | 10/10 | 5092 days | 30% |
Bruce & Elaine Chote | 10/10 | 5092 days | 30% |
Paul Nickson | 8/10 | 5092 days | 29% |
Monique | 8/10 | 5092 days | 29% |
Beat & Connie | 10/10 | 5094 days | 30% |
Alex Stil | 9/10 | 5094 days | 29% |
Pein van Nosrt | 7/10 | 5099 days | 28% |
Raith | 9/10 | 5099 days | 29% |
Elise van Haastert | 8/10 | 5099 days | 29% |
Claudia | 10/10 | 5101 days | 30% |
Carolin Ranner | 6/10 | 5101 days | 26% |
Winskowsky | 9/10 | 5102 days | 29% |
Hvid | 9/10 | 5116 days | 29% |
Judith K. | 6/10 | 5118 days | 26% |
Ruben and Jetske | 7/10 | 5118 days | 28% |
Roy Seymour | 9/10 | 5119 days | 29% |
Tom Hill | 10/10 | 5123 days | 30% |
Ruua Reyrink | 7/10 | 5124 days | 28% |
Patrick Hugener | 9/10 | 5124 days | 29% |
JohnHaestad | 4/10 | 5128 days | 19% |
dollimyxture | 10/10 | 5159 days | 30% |
aggiemary04 | 10/10 | 5251 days | 30% |
victoriauk | 4/10 | 5373 days | 19% |
Baumgarten | 8/10 | 5401 days | 29% |
travelbunnyadventures | 8/10 | 5404 days | 29% |
Don & Geraldine | 10/10 | 5440 days | 30% |
Matthias & Ceristiane | 8/10 | 5452 days | 29% |
Hilary and Chris Ayton | 9/10 | 5453 days | 29% |
Lis & Rob Tate | 9/10 | 5455 days | 29% |
ccthornton100 | 10/10 | 5465 days | 30% |
Bob Kusesia | 10/10 | 5466 days | 30% |
Yssel de Schepper | 7/10 | 5471 days | 28% |
Janny Meerdinnk Veldboow | 7/10 | 5471 days | 28% |
Arie Ascher | 9/10 | 5472 days | 29% |
Wolfgang Engelke | 10/10 | 5474 days | 30% |
Thomas K | 9/10 | 5474 days | 29% |
Loleit | 7/10 | 5486 days | 28% |
Mattias Thorm | 9/10 | 5487 days | 29% |
Vincente Garrido | 4/10 | 5488 days | 19% |
R Gilge | 10/10 | 5489 days | 30% |
Erik Hummelmose | 8/10 | 5489 days | 29% |
Ian E | 6/10 | 5489 days | 26% |
Nadine Schaee | 9/10 | 5490 days | 29% |
Belinda Godhard | 2/10 | 5490 days | 13% |
Uwe Rieper | 10/10 | 5492 days | 30% |
E.M. Prideaux | 10/10 | 5507 days | 30% |
Elizabeth E | 8/10 | 5509 days | 29% |
Stevens Frans | 8/10 | 5510 days | 29% |
Heinrich Hax | 9/10 | 5513 days | 29% |
tanh | 7/10 | 5540 days | 28% |
Stephanie Steiner | 8/10 | 5559 days | 29% |
Julia May | 9/10 | 5566 days | 29% |
X Neils | 7/10 | 5577 days | 28% |
Sarah Smith | 5/10 | 5581 days | 23% |
Anna | 6/10 | 5585 days | 26% |
OliverG1 | 7/10 | 5787 days | 28% |
Philipp | 5/10 | 5799 days | 23% |
JasminA | 5/10 | 5799 days | 23% |
ChristinaV | 8/10 | 5809 days | 29% |
JuergenSchnitzer | 9/10 | 5815 days | 29% |
AstridVG | 7/10 | 5816 days | 28% |
NatasjaV | 7/10 | 5817 days | 28% |
JimmyK | 7/10 | 5817 days | 28% |
MarcoJ | 9/10 | 5819 days | 29% |
LucyPoland | 9/10 | 5820 days | 29% |
Stolz | 7/10 | 5823 days | 28% |
BrzezinskaM | 10/10 | 5824 days | 30% |
AndreB | 10/10 | 5824 days | 30% |
Linda | 7/10 | 5831 days | 28% |
Susan | 8/10 | 5832 days | 29% |
Byleveld | 7/10 | 5832 days | 28% |
JoseB | 8/10 | 5833 days | 29% |
JetteG | 10/10 | 5833 days | 30% |
CarolF | 7/10 | 5834 days | 28% |
Rachel | 9/10 | 5849 days | 29% |
Claire | 7/10 | 5849 days | 28% |
Denise | 8/10 | 5850 days | 29% |
Denk | 8/10 | 5862 days | 29% |
Klalis | 10/10 | 5864 days | 30% |
Thomas | 4/10 | 5868 days | 19% |
Mike | 5/10 | 5869 days | 23% |
Debbie Mossman | 9/10 | 5874 days | 29% |
Johann | 10/10 | 5876 days | 30% |
Carina | 10/10 | 5878 days | 30% |
Mat | 8/10 | 5917 days | 29% |
Anette | 7/10 | 5919 days | 28% |
midlands_missus | 8/10 | 5921 days | 29% |
David | 7/10 | 5977 days | 28% |
Suyin | 10/10 | 5997 days | 30% |
Franz | 10/10 | 6170 days | 30% |
Jennifer Baulch | 7/10 | 6175 days | 28% |
George Jeffs | 10/10 | 6178 days | 30% |
Jacob | 9/10 | 6182 days | 29% |
Aharon | 10/10 | 6197 days | 30% |
D.A. Mulder | 8/10 | 6198 days | 29% |
Knol | 8/10 | 6200 days | 29% |
Cole Penelope | 8/10 | 6203 days | 29% |
Jody | 7/10 | 6211 days | 28% |
Anna | 5/10 | 6211 days | 23% |
Pauline Thai | 8/10 | 6218 days | 29% |
Dan Adamson | 8/10 | 6218 days | 29% |
Stephen Brightman | 8/10 | 6227 days | 29% |
Madeleine Rowland | 8/10 | 6227 days | 29% |
Bronwyn Gaby | 9/10 | 6245 days | 29% |
Free_ride | 9/10 | 6261 days | 29% |
Michael | 9/10 | 6284 days | 29% |
Raul | 10/10 | 6534 days | 30% |
TeamFlorida | 9/10 | 6536 days | 29% |
TeamFlorida | 8/10 | 6536 days | 29% |
James | 9/10 | 6549 days | 29% |
Rudi | 10/10 | 6553 days | 30% |
Rolf Kruger | 10/10 | 6577 days | 30% |
Brian | 10/10 | 6581 days | 30% |
Several adjustments to the weighted average are added to improve relevancy and credibility. These adjustments apply equally to all experiences that meet the criteria.
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 Te Anau Glowworm Caves experience has plenty of reviews and does not meet the criteria for any adjustment.
-4.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 52 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.
Days | Adjustment |
---|---|
… | … |
197 | -4.09% |
198 | -4.11% |
199 | -4.13% |
200 | -4.15% |
201 | -4.17% |
202 | -4.19% |
203 | -4.22% |
… | … |
3.17% Adjustment
Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.
You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.
We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.
83%
The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.