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Ranking Score Explained

Kia ora, 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 3454 days 100%
Jessica Freeland 10/10 3515 days 93%
Nanna Overbeck 10/10 3527 days 91%
Joe Rogers 9/10 3808 days 58%
Nicola Wiggan 9/10 3877 days 50%
Ben McDougal 10/10 3899 days 48%
Maria Schober 5/10 4186 days 9%
Helen Parsons 1/10 4194 days 0%
Elisa Felising 7/10 4194 days 11%
Claudia de Winter 9/10 4506 days 51%
Penny Lee 9/10 4508 days 51%
Jeroen Suijlang 8/10 4508 days 50%
Ludvig Fagerstrom 8/10 4582 days 50%
Marco Schmidt 10/10 4879 days 51%
Christian Schumacher 10/10 4879 days 51%
Jennifer Bramstad 8/10 4899 days 50%
Evelina Johansson 8/10 4899 days 50%
Sofia Anderson 10/10 4899 days 51%
Steve 5/10 4900 days 37%
Janine Kohlgrueler 9/10 4907 days 51%
Fraser Goldsmith 9/10 4924 days 51%
Nigel Leighton 10/10 4978 days 51%
Jonathan Vondette 7/10 4981 days 47%
Andreas and Christine and Nora Busch 10/10 4989 days 51%
lavonc 3/10 5020 days 24%
peterpiper 10/10 5204 days 51%
sandytemp22 10/10 5234 days 51%
Laura vanGool 10/10 5250 days 51%
Barbara Berkhout 7/10 5250 days 47%
Jurgen Joyce 8/10 5257 days 50%
Carole Carter 9/10 5257 days 51%
Sabrina Germany 9/10 5260 days 51%
J Jmal 10/10 5261 days 51%
Malena 10/10 5265 days 51%
Erik 10/10 5267 days 51%
Marion Hassink 8/10 5271 days 50%
Baas 8/10 5274 days 50%
Barbara 10/10 5275 days 51%
Rebecca Richardson 8/10 5276 days 50%
Andrew Powell 7/10 5276 days 47%
Andy Bridgman 8/10 5279 days 50%
Aoife Lillis 7/10 5282 days 47%
Rainer Schnell 8/10 5286 days 50%
Filsack 8/10 5286 days 50%
Hazel 10/10 5287 days 51%
Frank Waskikowski 9/10 5288 days 51%
Andreas Kristiansen 9/10 5288 days 51%
Robert MacLeod-Smith 8/10 5290 days 50%
Chris Marsh 6/10 5291 days 43%
Jessica Lane 7/10 5291 days 47%
Francis Corrigan 7/10 5295 days 47%
Laura Smith 9/10 5307 days 51%
Dean 8/10 5340 days 50%
Berry 10/10 5367 days 51%
Steve 9/10 5370 days 51%
MaggieYChaChi 9/10 5447 days 51%
GenH 9/10 5570 days 51%
Allison Meyoz 9/10 5576 days 51%
G Tulloch 9/10 5594 days 51%
Stephen Hunt 9/10 5596 days 51%
Thomas Klebensberger 10/10 5596 days 51%
Therea 10/10 5599 days 51%
Sean Brownell 7/10 5600 days 47%
Laura Thrower 10/10 5605 days 51%
David Taylor 9/10 5605 days 51%
Stefan Schmitz 8/10 5613 days 50%
Marii Joekalda 8/10 5614 days 50%
Frank & Ruth 6/10 5615 days 43%
Nathalie 10/10 5615 days 51%
Jo Meekley 7/10 5615 days 47%
Margit and Corein Groenevelt 8/10 5617 days 50%
Judith 9/10 5617 days 51%
Ven 8/10 5617 days 50%
Florian 8/10 5621 days 50%
Helen 9/10 5621 days 51%
Juliane Kleiu 10/10 5621 days 51%
Paula Dove 10/10 5621 days 51%
Erin 8/10 5622 days 50%
Walter Buschta 8/10 5622 days 50%
Wouter Moui 6/10 5623 days 43%
K Dahmer 8/10 5624 days 50%
Jonathan Cree 9/10 5624 days 51%
Laura Leigh 10/10 5624 days 51%
Ann-Kathrin Auditor 10/10 5625 days 51%
Katherine Forward 8/10 5625 days 50%
Chris Ashton 10/10 5625 days 51%
Jerry & Floon 7/10 5629 days 47%
Hadar Zevulun 9/10 5630 days 51%
Grumbach 9/10 5634 days 51%
Caroline Sheridan 9/10 5635 days 51%
Chris Darlington 10/10 5639 days 51%
Cheryl 10/10 5649 days 51%
Mark Aarts 9/10 5650 days 51%
Samuel Prechel 8/10 5651 days 50%
Dave and Lin Mungham 10/10 5652 days 51%
Gordon Daniels 8/10 5654 days 50%
Dr Dorthe Bossow 3/10 5655 days 24%
Helen Gilbertson 8/10 5658 days 50%
Doris Neuber 9/10 5658 days 51%
Ashleigh Buckley 8/10 5659 days 50%
PerspirationJournal 10/10 5751 days 51%
alku83 10/10 5751 days 51%
Mary Van 8/10 5812 days 50%
chloe1111 10/10 5935 days 51%
jenniferuk 9/10 5935 days 51%
Peter and Hilda 10/10 5965 days 51%
Einar 9/10 5984 days 51%
Inbar Yizhar Barnea 8/10 5984 days 50%
Tanya 9/10 5989 days 51%
Jana Steve 10/10 5990 days 51%
Yasmin Abrahams 7/10 5998 days 47%
Barbara & Sven 10/10 5998 days 51%
Judith 8/10 6002 days 50%
Henrik Hougs 8/10 6004 days 50%
Chris Glasg 9/10 6004 days 51%
Michael 10/10 6006 days 51%
Gary Ebrig 10/10 6009 days 51%
Mathias 9/10 6011 days 51%
Jamie 9/10 6016 days 51%
David Hobson 8/10 6016 days 50%
Christian 10/10 6016 days 51%
vanijzendoor 8/10 6019 days 50%
Dick Rosman 8/10 6020 days 50%
Frances Hay 8/10 6023 days 50%
Chance McGuire 10/10 6024 days 51%
Kevin and Teresa 8/10 6024 days 50%
Ben Miklozek 9/10 6024 days 51%
Marianne Lovdal 9/10 6024 days 51%
Jessica 5/10 6029 days 37%
S Luis Van Oler 6/10 6029 days 43%
sophiep 8/10 6070 days 50%
katharinatum 9/10 6070 days 51%
koellner 6/10 6084 days 43%
chrish1 9/10 6086 days 51%
Fred Findlay 7/10 6098 days 47%
maleta 9/10 6107 days 51%
Gemma Morris 10/10 6109 days 51%
TomL 10/10 6116 days 51%
Pauline Wan 7/10 6116 days 47%
eowyn2k 7/10 6116 days 47%
Suzanne 9/10 6147 days 51%
terryd 9/10 6208 days 51%
kindel 6/10 6212 days 43%
Emear Donnelly 10/10 6251 days 51%
zoed 7/10 6285 days 47%
steph_m 9/10 6300 days 51%
Charles Lyne 10/10 6300 days 51%
BenM1 7/10 6309 days 47%
KimC 8/10 6318 days 50%
JonK 8/10 6318 days 50%
TschaneK 10/10 6320 days 51%
RogerW 10/10 6322 days 51%
NicolaW 10/10 6322 days 51%
Lisa Duin 8/10 6328 days 50%
Joanna Harrnon 9/10 6329 days 51%
David 8/10 6330 days 50%
johnst 10/10 6330 days 51%
Adi 10/10 6330 days 51%
Sally477 9/10 6330 days 51%
Becca1 9/10 6332 days 51%
Jelle 8/10 6333 days 50%
Denys 8/10 6334 days 50%
Ronny 9/10 6334 days 51%
Viktoria Stoffel 10/10 6337 days 51%
Jon Li 9/10 6342 days 51%
Han Disveld 9/10 6342 days 51%
BevanLisa 10/10 6347 days 51%
SabineGermany 10/10 6348 days 51%
StefanGermany1 9/10 6348 days 51%
AnjaC 7/10 6348 days 47%
AnjaChrist 7/10 6348 days 47%
Torsten 9/10 6349 days 51%
MarcoJ 8/10 6350 days 50%
James O'Neil 10/10 6350 days 51%
Barry Smith 10/10 6350 days 51%
Siemens 8/10 6350 days 50%
AlexH 10/10 6351 days 51%
AnnickH 6/10 6352 days 43%
Rene 8/10 6353 days 50%
Dorothee 8/10 6353 days 50%
Rob 7/10 6353 days 47%
Mike 6/10 6354 days 43%
TammyH 9/10 6356 days 51%
Lynn White 7/10 6356 days 47%
Mette 8/10 6360 days 50%
Axel 5/10 6360 days 37%
amyd 8/10 6361 days 50%
Susan 9/10 6362 days 51%
lannie 5/10 6363 days 37%
XaviG 9/10 6364 days 51%
ChenM 8/10 6364 days 50%
Steven 9/10 6364 days 51%
CarleyJ 8/10 6364 days 50%
JesusB 7/10 6364 days 47%
GingerPrince 9/10 6364 days 51%
Steve 10/10 6364 days 51%
Claudia 9/10 6366 days 51%
Pascal 8/10 6366 days 50%
Karen 9/10 6369 days 51%
RandiL 7/10 6372 days 47%
IreneF 9/10 6373 days 51%
Rachel 8/10 6379 days 50%
Adi 10/10 6379 days 51%
Claire 8/10 6379 days 50%
Philippa 9/10 6380 days 51%
Conway 9/10 6380 days 51%
orianne 10/10 6386 days 51%
Caroline 7/10 6387 days 47%
Eike 9/10 6394 days 51%
Benni 7/10 6396 days 47%
John 6/10 6399 days 43%
Dan 9/10 6403 days 51%
Sally 9/10 6403 days 51%
Rosa 4/10 6403 days 30%
Sascha 7/10 6404 days 47%
Dassel 8/10 6404 days 50%
Eric 3/10 6405 days 24%
Charlie 9/10 6410 days 51%
tommfuller 7/10 6414 days 47%
Anouk 9/10 6442 days 51%
MissTraveller2009 10/10 6451 days 51%
David 9/10 6455 days 51%
Laura 9/10 6455 days 51%
Adam 8/10 6460 days 50%
mike brett 7/10 6464 days 47%
georgepearse 9/10 6501 days 51%
Aoife 8/10 6504 days 50%
Davina 8/10 6505 days 50%
Kath 10/10 6507 days 51%
Kate 8/10 6516 days 50%
Brenda 8/10 6516 days 50%
Amy 8/10 6525 days 50%
Katie 10/10 6525 days 51%
Christoffer 10/10 6527 days 51%
Rebecca 9/10 6527 days 51%
Suyin 10/10 6527 days 51%
Sarah 6/10 6536 days 43%
Michaela 9/10 6540 days 51%
Christopher 6/10 6540 days 43%
James 8/10 6540 days 50%
Sam Prior 8/10 6545 days 50%
jillian 8/10 6549 days 50%
George Burgas 9/10 6554 days 51%
stain weedman 6/10 6560 days 43%
Sharon Curly 9/10 6562 days 51%
Peddy 7/10 6566 days 47%
Tim 5/10 6582 days 37%
Thomas Fillary 9/10 6598 days 51%
Sjoerd 8/10 6604 days 50%
Gemma Harling 9/10 6604 days 51%
Charlie Bond 9/10 6611 days 51%
Florencia Cortese 10/10 6672 days 51%
Meike Biel 7/10 6680 days 47%
Helen 9/10 6680 days 51%
Ellie 9/10 6692 days 51%
Daniel 7/10 6710 days 47%
Omer Harron 9/10 6710 days 51%
Yayami Kimura 10/10 6713 days 51%
Kieran Concarr 9/10 6713 days 51%
Christian 8/10 6717 days 50%
Kathrin 9/10 6721 days 51%
Andreas Brett 8/10 6723 days 50%
Kristine Clemmensen Rotne 7/10 6723 days 47%
helga 6/10 6723 days 43%
Emily Houston 10/10 6727 days 51%
Hannah Holmes 8/10 6730 days 50%
Lisa Tame 9/10 6731 days 51%
Kelly 9/10 6734 days 51%
Stephanie 10/10 6742 days 51%
Sayaka 7/10 6742 days 47%
Marc Hertogs 8/10 6746 days 50%
Tanya Berthoud 9/10 6748 days 51%
Van Hoof 8/10 6770 days 50%
Berger 8/10 6777 days 50%
Travis Brennan 9/10 6789 days 51%
Alexis 10/10 6804 days 51%
Martine Arsac 5/10 6812 days 37%
Frida 8/10 6814 days 50%
Ben 10/10 6815 days 51%
Wendy Williams 8/10 6822 days 50%
Charlie Wilson 10/10 6897 days 51%
Ian Coldrake 8/10 6897 days 50%
Jill Bourke 10/10 6902 days 51%
Andy Chapman 8/10 6932 days 50%
Shelley 10/10 7037 days 51%
Will 9/10 7046 days 51%
Michael 9/10 7048 days 51%
Sue 8/10 7048 days 50%
Stefan 8/10 7051 days 50%
Jenny 8/10 7054 days 50%
Kate 8/10 7056 days 50%
Paul Yacoumis 7/10 7058 days 47%
Kathryn 9/10 7063 days 51%
Celia 9/10 7065 days 51%
Annelte 4/10 7066 days 30%
IdanNakash 8/10 7066 days 50%
Martin Christina 9/10 7066 days 51%
Chris 8/10 7067 days 50%
Janneke 8/10 7067 days 50%
Sue Robertson 10/10 7069 days 51%
Fenke 7/10 7072 days 47%
Bas 7/10 7072 days 47%
Daniel 9/10 7074 days 51%
Susan 6/10 7080 days 43%
ErikVanDam 9/10 7086 days 51%
MariaNorman 9/10 7086 days 51%
MarcHarris 8/10 7086 days 50%
Helena 10/10 7086 days 51%
Sarah 10/10 7095 days 51%
beesom 8/10 7096 days 50%
Peter 5/10 7100 days 37%
Sonja 7/10 7107 days 47%
Leah 8/10 7108 days 50%
Sarah 10/10 7128 days 51%

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

-2.09% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 123 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 -2.06%
198 -2.07%
199 -2.08%
200 -2.09%
201 -2.10%
202 -2.12%
203 -2.13%
… …

Balancing Adjustment

2.23% 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

85%

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.