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Ranking Score Explained

Hey, 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 Franz Josef Glacier Guides.

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.

Cymen Crick's avatar

Cymen Crick

Rankers Owner

Franz Josef Glacier Guides

Valid Reviews

314 Valid Reviews

The Franz Josef Glacier Guides experience has a total of 316 reviews. There are 314 valid reviews that are included when calculating the ranking score and 2 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 314 valid reviews:

Rating Count Percentage
10/10 76
24%
9/10 90
29%
8/10 84
27%
7/10 36
11%
6/10 14
4%
5/10 8
3%
4/10 2
1%
3/10 3
1%
2/10 0
0%
1/10 1
0%

83.95% Average

The raw data average (mean) for all the Franz Josef Glacier Guides valid reviews is 83.95% and is based on 314 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

281 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 314 valid reviews, the experience has 281 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 281 face-to-face reviews:

Rating Count Percentage
10/10 65
23%
9/10 81
29%
8/10 81
29%
7/10 30
11%
6/10 12
4%
5/10 7
2%
4/10 2
1%
3/10 2
1%
2/10 0
0%
1/10 1
0%

83.95% Average

The raw data average (mean) for all the Franz Josef Glacier Guides face-to-face reviews is 83.95% and is based on 281 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

85.18%

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
Fran and Ben 10/10 3227 days 100%
Jessica Freeland 10/10 3288 days 95%
Nanna Overbeck 10/10 3300 days 94%
Joe Rogers 9/10 3581 days 68%
Nicola Wiggan 9/10 3650 days 62%
Ben McDougal 10/10 3672 days 61%
Maria Schober 5/10 3959 days 26%
Helen Parsons 1/10 3967 days 13%
Elisa Felising 7/10 3967 days 32%
Claudia de Winter 9/10 4279 days 7%
Penny Lee 9/10 4281 days 7%
Jeroen Suijlang 8/10 4281 days 6%
Ludvig Fagerstrom 8/10 4355 days 0%
Marco Schmidt 10/10 4652 days 43%
Christian Schumacher 10/10 4652 days 43%
Jennifer Bramstad 8/10 4672 days 42%
Evelina Johansson 8/10 4672 days 42%
Sofia Anderson 10/10 4672 days 43%
Steve 5/10 4673 days 32%
Janine Kohlgrueler 9/10 4680 days 43%
Fraser Goldsmith 9/10 4697 days 43%
Nigel Leighton 10/10 4751 days 43%
Jonathan Vondette 7/10 4754 days 40%
Andreas and Christine and Nora Busch 10/10 4762 days 43%
lavonc 3/10 4793 days 22%
peterpiper 10/10 4977 days 43%
sandytemp22 10/10 5007 days 43%
Laura vanGool 10/10 5023 days 43%
Barbara Berkhout 7/10 5023 days 40%
Jurgen Joyce 8/10 5030 days 42%
Carole Carter 9/10 5030 days 43%
Sabrina Germany 9/10 5033 days 43%
J Jmal 10/10 5034 days 43%
Malena 10/10 5038 days 43%
Erik 10/10 5040 days 43%
Marion Hassink 8/10 5044 days 42%
Baas 8/10 5047 days 42%
Barbara 10/10 5048 days 43%
Rebecca Richardson 8/10 5049 days 42%
Andrew Powell 7/10 5049 days 40%
Andy Bridgman 8/10 5052 days 42%
Aoife Lillis 7/10 5055 days 40%
Rainer Schnell 8/10 5059 days 42%
Filsack 8/10 5059 days 42%
Hazel 10/10 5060 days 43%
Frank Waskikowski 9/10 5061 days 43%
Andreas Kristiansen 9/10 5061 days 43%
Robert MacLeod-Smith 8/10 5063 days 42%
Chris Marsh 6/10 5064 days 37%
Jessica Lane 7/10 5064 days 40%
Francis Corrigan 7/10 5068 days 40%
Laura Smith 9/10 5080 days 43%
Dean 8/10 5113 days 42%
Berry 10/10 5140 days 43%
Steve 9/10 5143 days 43%
MaggieYChaChi 9/10 5220 days 43%
GenH 9/10 5343 days 43%
Allison Meyoz 9/10 5349 days 43%
G Tulloch 9/10 5367 days 43%
Stephen Hunt 9/10 5369 days 43%
Thomas Klebensberger 10/10 5369 days 43%
Therea 10/10 5372 days 43%
Sean Brownell 7/10 5373 days 40%
Laura Thrower 10/10 5378 days 43%
David Taylor 9/10 5378 days 43%
Stefan Schmitz 8/10 5386 days 42%
Marii Joekalda 8/10 5387 days 42%
Frank & Ruth 6/10 5388 days 37%
Nathalie 10/10 5388 days 43%
Jo Meekley 7/10 5388 days 40%
Margit and Corein Groenevelt 8/10 5390 days 42%
Judith 9/10 5390 days 43%
Ven 8/10 5390 days 42%
Florian 8/10 5394 days 42%
Helen 9/10 5394 days 43%
Juliane Kleiu 10/10 5394 days 43%
Paula Dove 10/10 5394 days 43%
Erin 8/10 5395 days 42%
Walter Buschta 8/10 5395 days 42%
Wouter Moui 6/10 5396 days 37%
K Dahmer 8/10 5397 days 42%
Jonathan Cree 9/10 5397 days 43%
Laura Leigh 10/10 5397 days 43%
Ann-Kathrin Auditor 10/10 5398 days 43%
Katherine Forward 8/10 5398 days 42%
Chris Ashton 10/10 5398 days 43%
Jerry & Floon 7/10 5402 days 40%
Hadar Zevulun 9/10 5403 days 43%
Grumbach 9/10 5407 days 43%
Caroline Sheridan 9/10 5408 days 43%
Chris Darlington 10/10 5412 days 43%
Cheryl 10/10 5422 days 43%
Mark Aarts 9/10 5423 days 43%
Samuel Prechel 8/10 5424 days 42%
Dave and Lin Mungham 10/10 5425 days 43%
Gordon Daniels 8/10 5427 days 42%
Dr Dorthe Bossow 3/10 5428 days 22%
Helen Gilbertson 8/10 5431 days 42%
Doris Neuber 9/10 5431 days 43%
Ashleigh Buckley 8/10 5432 days 42%
PerspirationJournal 10/10 5524 days 43%
alku83 10/10 5524 days 43%
Mary Van 8/10 5585 days 42%
chloe1111 10/10 5708 days 43%
jenniferuk 9/10 5708 days 43%
Peter and Hilda 10/10 5738 days 43%
Einar 9/10 5757 days 43%
Inbar Yizhar Barnea 8/10 5757 days 42%
Tanya 9/10 5762 days 43%
Jana Steve 10/10 5763 days 43%
Yasmin Abrahams 7/10 5771 days 40%
Barbara & Sven 10/10 5771 days 43%
Judith 8/10 5775 days 42%
Henrik Hougs 8/10 5777 days 42%
Chris Glasg 9/10 5777 days 43%
Michael 10/10 5779 days 43%
Gary Ebrig 10/10 5782 days 43%
Mathias 9/10 5784 days 43%
Jamie 9/10 5789 days 43%
David Hobson 8/10 5789 days 42%
Christian 10/10 5789 days 43%
vanijzendoor 8/10 5792 days 42%
Dick Rosman 8/10 5793 days 42%
Frances Hay 8/10 5796 days 42%
Chance McGuire 10/10 5797 days 43%
Kevin and Teresa 8/10 5797 days 42%
Ben Miklozek 9/10 5797 days 43%
Marianne Lovdal 9/10 5797 days 43%
Jessica 5/10 5802 days 32%
S Luis Van Oler 6/10 5802 days 37%
sophiep 8/10 5843 days 42%
katharinatum 9/10 5843 days 43%
koellner 6/10 5857 days 37%
chrish1 9/10 5859 days 43%
Fred Findlay 7/10 5871 days 40%
maleta 9/10 5880 days 43%
Gemma Morris 10/10 5882 days 43%
TomL 10/10 5889 days 43%
Pauline Wan 7/10 5889 days 40%
eowyn2k 7/10 5889 days 40%
Suzanne 9/10 5920 days 43%
terryd 9/10 5981 days 43%
kindel 6/10 5985 days 37%
Emear Donnelly 10/10 6024 days 43%
zoed 7/10 6058 days 40%
steph_m 9/10 6073 days 43%
Charles Lyne 10/10 6073 days 43%
BenM1 7/10 6082 days 40%
KimC 8/10 6091 days 42%
JonK 8/10 6091 days 42%
TschaneK 10/10 6093 days 43%
RogerW 10/10 6095 days 43%
NicolaW 10/10 6095 days 43%
Lisa Duin 8/10 6101 days 42%
Joanna Harrnon 9/10 6102 days 43%
David 8/10 6103 days 42%
johnst 10/10 6103 days 43%
Adi 10/10 6103 days 43%
Sally477 9/10 6103 days 43%
Becca1 9/10 6105 days 43%
Jelle 8/10 6106 days 42%
Denys 8/10 6107 days 42%
Ronny 9/10 6107 days 43%
Viktoria Stoffel 10/10 6110 days 43%
Jon Li 9/10 6115 days 43%
Han Disveld 9/10 6115 days 43%
BevanLisa 10/10 6120 days 43%
SabineGermany 10/10 6121 days 43%
StefanGermany1 9/10 6121 days 43%
AnjaC 7/10 6121 days 40%
AnjaChrist 7/10 6121 days 40%
Torsten 9/10 6122 days 43%
MarcoJ 8/10 6123 days 42%
James O'Neil 10/10 6123 days 43%
Barry Smith 10/10 6123 days 43%
Siemens 8/10 6123 days 42%
AlexH 10/10 6124 days 43%
AnnickH 6/10 6125 days 37%
Rene 8/10 6126 days 42%
Dorothee 8/10 6126 days 42%
Rob 7/10 6126 days 40%
Mike 6/10 6127 days 37%
TammyH 9/10 6129 days 43%
Lynn White 7/10 6129 days 40%
Mette 8/10 6133 days 42%
Axel 5/10 6133 days 32%
amyd 8/10 6134 days 42%
Susan 9/10 6135 days 43%
lannie 5/10 6136 days 32%
XaviG 9/10 6137 days 43%
ChenM 8/10 6137 days 42%
Steven 9/10 6137 days 43%
CarleyJ 8/10 6137 days 42%
JesusB 7/10 6137 days 40%
GingerPrince 9/10 6137 days 43%
Steve 10/10 6137 days 43%
Claudia 9/10 6139 days 43%
Pascal 8/10 6139 days 42%
Karen 9/10 6142 days 43%
RandiL 7/10 6145 days 40%
IreneF 9/10 6146 days 43%
Rachel 8/10 6152 days 42%
Adi 10/10 6152 days 43%
Claire 8/10 6152 days 42%
Philippa 9/10 6153 days 43%
Conway 9/10 6153 days 43%
orianne 10/10 6159 days 43%
Caroline 7/10 6160 days 40%
Eike 9/10 6167 days 43%
Benni 7/10 6169 days 40%
John 6/10 6172 days 37%
Dan 9/10 6176 days 43%
Sally 9/10 6176 days 43%
Rosa 4/10 6176 days 27%
Sascha 7/10 6177 days 40%
Dassel 8/10 6177 days 42%
Eric 3/10 6178 days 22%
Charlie 9/10 6183 days 43%
tommfuller 7/10 6187 days 40%
Anouk 9/10 6215 days 43%
MissTraveller2009 10/10 6224 days 43%
David 9/10 6228 days 43%
Laura 9/10 6228 days 43%
Adam 8/10 6233 days 42%
mike brett 7/10 6237 days 40%
georgepearse 9/10 6274 days 43%
Aoife 8/10 6277 days 42%
Davina 8/10 6278 days 42%
Kath 10/10 6280 days 43%
Kate 8/10 6289 days 42%
Brenda 8/10 6289 days 42%
Amy 8/10 6298 days 42%
Katie 10/10 6298 days 43%
Christoffer 10/10 6300 days 43%
Rebecca 9/10 6300 days 43%
Suyin 10/10 6300 days 43%
Sarah 6/10 6309 days 37%
Michaela 9/10 6313 days 43%
Christopher 6/10 6313 days 37%
James 8/10 6313 days 42%
Sam Prior 8/10 6318 days 42%
jillian 8/10 6322 days 42%
George Burgas 9/10 6327 days 43%
stain weedman 6/10 6333 days 37%
Sharon Curly 9/10 6335 days 43%
Peddy 7/10 6339 days 40%
Tim 5/10 6355 days 32%
Thomas Fillary 9/10 6371 days 43%
Sjoerd 8/10 6377 days 42%
Gemma Harling 9/10 6377 days 43%
Charlie Bond 9/10 6384 days 43%
Florencia Cortese 10/10 6445 days 43%
Meike Biel 7/10 6453 days 40%
Helen 9/10 6453 days 43%
Ellie 9/10 6465 days 43%
Daniel 7/10 6483 days 40%
Omer Harron 9/10 6483 days 43%
Yayami Kimura 10/10 6486 days 43%
Kieran Concarr 9/10 6486 days 43%
Christian 8/10 6490 days 42%
Kathrin 9/10 6494 days 43%
Andreas Brett 8/10 6496 days 42%
Kristine Clemmensen Rotne 7/10 6496 days 40%
helga 6/10 6496 days 37%
Emily Houston 10/10 6500 days 43%
Hannah Holmes 8/10 6503 days 42%
Lisa Tame 9/10 6504 days 43%
Kelly 9/10 6507 days 43%
Stephanie 10/10 6515 days 43%
Sayaka 7/10 6515 days 40%
Marc Hertogs 8/10 6519 days 42%
Tanya Berthoud 9/10 6521 days 43%
Van Hoof 8/10 6543 days 42%
Berger 8/10 6550 days 42%
Travis Brennan 9/10 6562 days 43%
Alexis 10/10 6577 days 43%
Martine Arsac 5/10 6585 days 32%
Frida 8/10 6587 days 42%
Ben 10/10 6588 days 43%
Wendy Williams 8/10 6595 days 42%
Charlie Wilson 10/10 6670 days 43%
Ian Coldrake 8/10 6670 days 42%
Jill Bourke 10/10 6675 days 43%
Andy Chapman 8/10 6705 days 42%
Shelley 10/10 6810 days 43%
Will 9/10 6819 days 43%
Michael 9/10 6821 days 43%
Sue 8/10 6821 days 42%
Stefan 8/10 6824 days 42%
Jenny 8/10 6827 days 42%
Kate 8/10 6829 days 42%
Paul Yacoumis 7/10 6831 days 40%
Kathryn 9/10 6836 days 43%
Celia 9/10 6838 days 43%
Annelte 4/10 6839 days 27%
IdanNakash 8/10 6839 days 42%
Martin Christina 9/10 6839 days 43%
Chris 8/10 6840 days 42%
Janneke 8/10 6840 days 42%
Sue Robertson 10/10 6842 days 43%
Fenke 7/10 6845 days 40%
Bas 7/10 6845 days 40%
Daniel 9/10 6847 days 43%
Susan 6/10 6853 days 37%
ErikVanDam 9/10 6859 days 43%
MariaNorman 9/10 6859 days 43%
MarcHarris 8/10 6859 days 42%
Helena 10/10 6859 days 43%
Sarah 10/10 6868 days 43%
beesom 8/10 6869 days 42%
Peter 5/10 6873 days 32%
Sonja 7/10 6880 days 40%
Leah 8/10 6881 days 42%
Sarah 10/10 6901 days 43%

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 Franz Josef Glacier Guides experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.05% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 42 days. However the Franz Josef Glacier Guides 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 Franz Josef Glacier Guides experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
… …
197 -3.99%
198 -4.01%
199 -4.03%
200 -4.05%
201 -4.08%
202 -4.10%
203 -4.12%
… …

Balancing Adjustment

2.70% 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.

Final Ranking Score

84%

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.