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 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.

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Cymen Crick

Rankers Owner

Te Anau Glowworm Caves

Valid Reviews

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.

Face-to-Face Reviews

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.

Weighted Average

83.32%

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 1748 days 100%
Dan Coates 9/10 1981 days 87%
Dominik 9/10 1981 days 87%
Holloway 10/10 2004 days 86%
Christina 6/10 2072 days 68%
Barbara Knops 9/10 2074 days 82%
Manu Liberta 10/10 2084 days 82%
Bruno 9/10 2094 days 81%
Kirsty Smith 10/10 2117 days 80%
Sophia Satter 8/10 2128 days 76%
Afiya Levy 10/10 2349 days 68%
Johannes Eisel 6/10 2358 days 55%
Alexander Mattea 5/10 2358 days 54%
Timea Bagosi 9/10 2361 days 67%
Riviere 8/10 2372 days 63%
Dani 8/10 2374 days 63%
Benoit Leclerc 7/10 2376 days 60%
Anna Stoehr 10/10 2394 days 65%
Kai Krchmar 6/10 2447 days 51%
Kristina Farkas 5/10 2742 days 37%
Sophia Kadel 10/10 2772 days 45%
Laura and Marie 7/10 2778 days 40%
Rachel S 10/10 2786 days 44%
Joris Giullemot 8/10 3094 days 26%
Laura Metz 7/10 3105 days 24%
Hubertus Thost 7/10 3105 days 24%
Amanda 4/10 3120 days 20%
S B 10/10 3133 days 26%
M K 10/10 3133 days 26%
Maya Bakker-deDreu 8/10 3141 days 24%
Christin Woelk 9/10 3421 days 10%
Maria Klister 7/10 3441 days 8%
Lydia Kleinkoenen 9/10 3461 days 8%
Jessica Grewe 9/10 3461 days 8%
Hannah Lia-Isis Kubillus 9/10 3461 days 8%
Jan Zimmerman 8/10 3472 days 7%
Margaret and Derek McNeil 10/10 3532 days 4%
Frank and Suzanne 8/10 3547 days 3%
RollingMoon 8/10 3608 days 0%
Marcel & Kim Meichtry 7/10 3828 days 23%
Howell Davies 5/10 3831 days 20%
Baas 7/10 3831 days 23%
Pete & Pat Etheridge 8/10 3831 days 24%
Siegfried Richter 7/10 3832 days 23%
Melanie Mathiak 10/10 3834 days 25%
Sig Schrattner 8/10 3834 days 24%
Rebecca Doehl 7/10 3835 days 23%
Seth & Carla 7/10 3836 days 23%
Gabriele Wendt 9/10 3836 days 25%
Tadej Ferjan 8/10 3836 days 24%
Mary Mitchell 10/10 3836 days 25%
Emily Wikston 9/10 3837 days 25%
Andreas & Leonie Fehr 10/10 3843 days 25%
Horst Langstein 9/10 3844 days 25%
Marco Scheiber 9/10 3845 days 25%
Friedrich Kaltner 10/10 3847 days 25%
Frank & Julia 10/10 3850 days 25%
Thyg Lingdal 10/10 3850 days 25%
Nicole van Bergen 8/10 3850 days 24%
Mike & April Prince 7/10 3864 days 23%
Alfred & Henrike 8/10 3876 days 24%
Lyn Stainton 6/10 3925 days 21%
Ken Talan 10/10 4153 days 25%
Jon_and_Family 9/10 4157 days 25%
Gertz 10/10 4161 days 25%
Katarina Bokor 8/10 4165 days 24%
Mark Franklin 6/10 4165 days 21%
Gordon Agent 10/10 4165 days 25%
Maureen Hardy 8/10 4165 days 24%
AJ van Pelt 8/10 4165 days 24%
Werner and Rita 9/10 4172 days 25%
Richard Dudfield 10/10 4174 days 25%
Sayaka 7/10 4174 days 23%
Urs and Isabella 7/10 4175 days 23%
Juliane Kleiu 10/10 4178 days 25%
Linda Kremer 9/10 4179 days 25%
Rebecca Johnston 9/10 4179 days 25%
David Mellard 10/10 4180 days 25%
Bruce & Elaine Chote 10/10 4180 days 25%
Paul Nickson 8/10 4180 days 24%
Monique 8/10 4180 days 24%
Beat & Connie 10/10 4182 days 25%
Alex Stil 9/10 4182 days 25%
Pein van Nosrt 7/10 4187 days 23%
Raith 9/10 4187 days 25%
Elise van Haastert 8/10 4187 days 24%
Claudia 10/10 4189 days 25%
Carolin Ranner 6/10 4189 days 21%
Winskowsky 9/10 4190 days 25%
Hvid 9/10 4204 days 25%
Judith K. 6/10 4206 days 21%
Ruben and Jetske 7/10 4206 days 23%
Roy Seymour 9/10 4207 days 25%
Tom Hill 10/10 4211 days 25%
Ruua Reyrink 7/10 4212 days 23%
Patrick Hugener 9/10 4212 days 25%
JohnHaestad 4/10 4216 days 20%
dollimyxture 10/10 4247 days 25%
aggiemary04 10/10 4339 days 25%
victoriauk 4/10 4461 days 20%
Baumgarten 8/10 4489 days 24%
travelbunnyadventures 8/10 4492 days 24%
Don & Geraldine 10/10 4528 days 25%
Matthias & Ceristiane 8/10 4540 days 24%
Hilary and Chris Ayton 9/10 4541 days 25%
Lis & Rob Tate 9/10 4543 days 25%
ccthornton100 10/10 4553 days 25%
Bob Kusesia 10/10 4554 days 25%
Yssel de Schepper 7/10 4559 days 23%
Janny Meerdinnk Veldboow 7/10 4559 days 23%
Arie Ascher 9/10 4560 days 25%
Wolfgang Engelke 10/10 4562 days 25%
Thomas K 9/10 4562 days 25%
Loleit 7/10 4574 days 23%
Mattias Thorm 9/10 4575 days 25%
Vincente Garrido 4/10 4576 days 20%
R Gilge 10/10 4577 days 25%
Erik Hummelmose 8/10 4577 days 24%
Ian E 6/10 4577 days 21%
Nadine Schaee 9/10 4578 days 25%
Belinda Godhard 2/10 4578 days 18%
Uwe Rieper 10/10 4580 days 25%
E.M. Prideaux 10/10 4595 days 25%
Elizabeth E 8/10 4597 days 24%
Stevens Frans 8/10 4598 days 24%
Heinrich Hax 9/10 4601 days 25%
tanh 7/10 4628 days 23%
Stephanie Steiner 8/10 4647 days 24%
Julia May 9/10 4654 days 25%
X Neils 7/10 4665 days 23%
Sarah Smith 5/10 4669 days 20%
Anna 6/10 4673 days 21%
OliverG1 7/10 4875 days 23%
Philipp 5/10 4887 days 20%
JasminA 5/10 4887 days 20%
ChristinaV 8/10 4897 days 24%
JuergenSchnitzer 9/10 4903 days 25%
AstridVG 7/10 4903 days 23%
NatasjaV 7/10 4905 days 23%
JimmyK 7/10 4905 days 23%
MarcoJ 9/10 4907 days 25%
LucyPoland 9/10 4908 days 25%
Stolz 7/10 4911 days 23%
BrzezinskaM 10/10 4912 days 25%
AndreB 10/10 4912 days 25%
Linda 7/10 4918 days 23%
Susan 8/10 4919 days 24%
Byleveld 7/10 4920 days 23%
JoseB 8/10 4921 days 24%
JetteG 10/10 4921 days 25%
CarolF 7/10 4922 days 23%
Rachel 9/10 4936 days 25%
Claire 7/10 4936 days 23%
Denise 8/10 4938 days 24%
Denk 8/10 4949 days 24%
Klalis 10/10 4952 days 25%
Thomas 4/10 4955 days 20%
Mike 5/10 4956 days 20%
Debbie Mossman 9/10 4962 days 25%
Johann 10/10 4964 days 25%
Carina 10/10 4965 days 25%
Mat 8/10 5004 days 24%
Anette 7/10 5006 days 23%
midlands_missus 8/10 5009 days 24%
David 7/10 5064 days 23%
Suyin 10/10 5085 days 25%
Franz 10/10 5258 days 25%
Jennifer Baulch 7/10 5263 days 23%
George Jeffs 10/10 5266 days 25%
Jacob 9/10 5270 days 25%
Aharon 10/10 5285 days 25%
D.A. Mulder 8/10 5286 days 24%
Knol 8/10 5288 days 24%
Cole Penelope 8/10 5291 days 24%
Jody 7/10 5299 days 23%
Anna 5/10 5299 days 20%
Pauline Thai 8/10 5306 days 24%
Dan Adamson 8/10 5306 days 24%
Stephen Brightman 8/10 5315 days 24%
Madeleine Rowland 8/10 5315 days 24%
Bronwyn Gaby 9/10 5333 days 25%
Free_ride 9/10 5349 days 25%
Michael 9/10 5372 days 25%
Raul 10/10 5622 days 25%
TeamFlorida 9/10 5624 days 25%
TeamFlorida 8/10 5624 days 24%
James 9/10 5637 days 25%
Rudi 10/10 5641 days 25%
Rolf Kruger 10/10 5665 days 25%
Brian 10/10 5669 days 25%

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 Te Anau Glowworm Caves experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-2.35% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 111 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 -2.31%
198 -2.32%
199 -2.33%
200 -2.35%
201 -2.36%
202 -2.37%
203 -2.38%

Final Ranking Score

81%

The final ranking score once any adjustments, ratings, 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.