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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 3225 days 100%
Jessica Freeland 10/10 3286 days 95%
Nanna Overbeck 10/10 3298 days 94%
Joe Rogers 9/10 3579 days 68%
Nicola Wiggan 9/10 3648 days 62%
Ben McDougal 10/10 3670 days 61%
Maria Schober 5/10 3957 days 26%
Helen Parsons 1/10 3965 days 13%
Elisa Felising 7/10 3965 days 32%
Claudia de Winter 9/10 4277 days 7%
Penny Lee 9/10 4279 days 7%
Jeroen Suijlang 8/10 4279 days 6%
Ludvig Fagerstrom 8/10 4353 days 0%
Marco Schmidt 10/10 4650 days 43%
Christian Schumacher 10/10 4650 days 43%
Jennifer Bramstad 8/10 4670 days 42%
Evelina Johansson 8/10 4670 days 42%
Sofia Anderson 10/10 4670 days 43%
Steve 5/10 4671 days 32%
Janine Kohlgrueler 9/10 4678 days 42%
Fraser Goldsmith 9/10 4695 days 42%
Nigel Leighton 10/10 4749 days 43%
Jonathan Vondette 7/10 4752 days 40%
Andreas and Christine and Nora Busch 10/10 4760 days 43%
lavonc 3/10 4791 days 22%
peterpiper 10/10 4975 days 43%
sandytemp22 10/10 5005 days 43%
Laura vanGool 10/10 5021 days 43%
Barbara Berkhout 7/10 5021 days 40%
Jurgen Joyce 8/10 5028 days 42%
Carole Carter 9/10 5028 days 42%
Sabrina Germany 9/10 5031 days 42%
J Jmal 10/10 5032 days 43%
Malena 10/10 5036 days 43%
Erik 10/10 5038 days 43%
Marion Hassink 8/10 5042 days 42%
Baas 8/10 5045 days 42%
Barbara 10/10 5046 days 43%
Rebecca Richardson 8/10 5047 days 42%
Andrew Powell 7/10 5047 days 40%
Andy Bridgman 8/10 5050 days 42%
Aoife Lillis 7/10 5053 days 40%
Rainer Schnell 8/10 5057 days 42%
Filsack 8/10 5057 days 42%
Hazel 10/10 5058 days 43%
Frank Waskikowski 9/10 5059 days 42%
Andreas Kristiansen 9/10 5059 days 42%
Robert MacLeod-Smith 8/10 5061 days 42%
Chris Marsh 6/10 5062 days 37%
Jessica Lane 7/10 5062 days 40%
Francis Corrigan 7/10 5066 days 40%
Laura Smith 9/10 5078 days 42%
Dean 8/10 5111 days 42%
Berry 10/10 5138 days 43%
Steve 9/10 5141 days 42%
MaggieYChaChi 9/10 5218 days 42%
GenH 9/10 5341 days 42%
Allison Meyoz 9/10 5347 days 42%
G Tulloch 9/10 5365 days 42%
Stephen Hunt 9/10 5367 days 42%
Thomas Klebensberger 10/10 5367 days 43%
Therea 10/10 5370 days 43%
Sean Brownell 7/10 5371 days 40%
Laura Thrower 10/10 5376 days 43%
David Taylor 9/10 5376 days 42%
Stefan Schmitz 8/10 5384 days 42%
Marii Joekalda 8/10 5385 days 42%
Frank & Ruth 6/10 5386 days 37%
Nathalie 10/10 5386 days 43%
Jo Meekley 7/10 5386 days 40%
Margit and Corein Groenevelt 8/10 5388 days 42%
Judith 9/10 5388 days 42%
Ven 8/10 5388 days 42%
Florian 8/10 5392 days 42%
Helen 9/10 5392 days 42%
Juliane Kleiu 10/10 5392 days 43%
Paula Dove 10/10 5392 days 43%
Erin 8/10 5393 days 42%
Walter Buschta 8/10 5393 days 42%
Wouter Moui 6/10 5394 days 37%
K Dahmer 8/10 5395 days 42%
Jonathan Cree 9/10 5395 days 42%
Laura Leigh 10/10 5395 days 43%
Ann-Kathrin Auditor 10/10 5396 days 43%
Katherine Forward 8/10 5396 days 42%
Chris Ashton 10/10 5396 days 43%
Jerry & Floon 7/10 5400 days 40%
Hadar Zevulun 9/10 5401 days 42%
Grumbach 9/10 5405 days 42%
Caroline Sheridan 9/10 5406 days 42%
Chris Darlington 10/10 5410 days 43%
Cheryl 10/10 5420 days 43%
Mark Aarts 9/10 5421 days 42%
Samuel Prechel 8/10 5422 days 42%
Dave and Lin Mungham 10/10 5423 days 43%
Gordon Daniels 8/10 5425 days 42%
Dr Dorthe Bossow 3/10 5426 days 22%
Helen Gilbertson 8/10 5429 days 42%
Doris Neuber 9/10 5429 days 42%
Ashleigh Buckley 8/10 5430 days 42%
PerspirationJournal 10/10 5522 days 43%
alku83 10/10 5522 days 43%
Mary Van 8/10 5583 days 42%
chloe1111 10/10 5706 days 43%
jenniferuk 9/10 5706 days 42%
Peter and Hilda 10/10 5736 days 43%
Einar 9/10 5755 days 42%
Inbar Yizhar Barnea 8/10 5755 days 42%
Tanya 9/10 5760 days 42%
Jana Steve 10/10 5761 days 43%
Yasmin Abrahams 7/10 5769 days 40%
Barbara & Sven 10/10 5769 days 43%
Judith 8/10 5773 days 42%
Henrik Hougs 8/10 5775 days 42%
Chris Glasg 9/10 5775 days 42%
Michael 10/10 5777 days 43%
Gary Ebrig 10/10 5780 days 43%
Mathias 9/10 5782 days 42%
Jamie 9/10 5787 days 42%
David Hobson 8/10 5787 days 42%
Christian 10/10 5787 days 43%
vanijzendoor 8/10 5790 days 42%
Dick Rosman 8/10 5791 days 42%
Frances Hay 8/10 5794 days 42%
Chance McGuire 10/10 5795 days 43%
Kevin and Teresa 8/10 5795 days 42%
Ben Miklozek 9/10 5795 days 42%
Marianne Lovdal 9/10 5795 days 42%
Jessica 5/10 5800 days 32%
S Luis Van Oler 6/10 5800 days 37%
sophiep 8/10 5841 days 42%
katharinatum 9/10 5841 days 42%
koellner 6/10 5855 days 37%
chrish1 9/10 5857 days 42%
Fred Findlay 7/10 5869 days 40%
maleta 9/10 5878 days 42%
Gemma Morris 10/10 5880 days 43%
TomL 10/10 5887 days 43%
Pauline Wan 7/10 5887 days 40%
eowyn2k 7/10 5887 days 40%
Suzanne 9/10 5918 days 42%
terryd 9/10 5979 days 42%
kindel 6/10 5983 days 37%
Emear Donnelly 10/10 6022 days 43%
zoed 7/10 6056 days 40%
steph_m 9/10 6071 days 42%
Charles Lyne 10/10 6071 days 43%
BenM1 7/10 6080 days 40%
KimC 8/10 6089 days 42%
JonK 8/10 6089 days 42%
TschaneK 10/10 6091 days 43%
RogerW 10/10 6093 days 43%
NicolaW 10/10 6093 days 43%
Lisa Duin 8/10 6099 days 42%
Joanna Harrnon 9/10 6100 days 42%
David 8/10 6101 days 42%
johnst 10/10 6101 days 43%
Adi 10/10 6101 days 43%
Sally477 9/10 6102 days 42%
Becca1 9/10 6103 days 42%
Jelle 8/10 6104 days 42%
Denys 8/10 6105 days 42%
Ronny 9/10 6105 days 42%
Viktoria Stoffel 10/10 6108 days 43%
Jon Li 9/10 6113 days 42%
Han Disveld 9/10 6113 days 42%
BevanLisa 10/10 6118 days 43%
SabineGermany 10/10 6119 days 43%
StefanGermany1 9/10 6119 days 42%
AnjaC 7/10 6119 days 40%
AnjaChrist 7/10 6119 days 40%
Torsten 9/10 6120 days 42%
MarcoJ 8/10 6121 days 42%
James O'Neil 10/10 6121 days 43%
Barry Smith 10/10 6121 days 43%
Siemens 8/10 6121 days 42%
AlexH 10/10 6122 days 43%
AnnickH 6/10 6123 days 37%
Rene 8/10 6124 days 42%
Dorothee 8/10 6124 days 42%
Rob 7/10 6124 days 40%
Mike 6/10 6125 days 37%
TammyH 9/10 6127 days 42%
Lynn White 7/10 6127 days 40%
Mette 8/10 6131 days 42%
Axel 5/10 6131 days 32%
amyd 8/10 6132 days 42%
Susan 9/10 6133 days 42%
lannie 5/10 6134 days 32%
XaviG 9/10 6135 days 42%
ChenM 8/10 6135 days 42%
Steven 9/10 6135 days 42%
CarleyJ 8/10 6135 days 42%
JesusB 7/10 6135 days 40%
GingerPrince 9/10 6135 days 42%
Steve 10/10 6135 days 43%
Claudia 9/10 6137 days 42%
Pascal 8/10 6137 days 42%
Karen 9/10 6140 days 42%
RandiL 7/10 6143 days 40%
IreneF 9/10 6144 days 42%
Rachel 8/10 6150 days 42%
Adi 10/10 6150 days 43%
Claire 8/10 6150 days 42%
Philippa 9/10 6151 days 42%
Conway 9/10 6151 days 42%
orianne 10/10 6158 days 43%
Caroline 7/10 6158 days 40%
Eike 9/10 6165 days 42%
Benni 7/10 6167 days 40%
John 6/10 6170 days 37%
Dan 9/10 6174 days 42%
Sally 9/10 6174 days 42%
Rosa 4/10 6174 days 27%
Sascha 7/10 6175 days 40%
Dassel 8/10 6175 days 42%
Eric 3/10 6176 days 22%
Charlie 9/10 6181 days 42%
tommfuller 7/10 6185 days 40%
Anouk 9/10 6213 days 42%
MissTraveller2009 10/10 6222 days 43%
David 9/10 6226 days 42%
Laura 9/10 6226 days 42%
Adam 8/10 6231 days 42%
mike brett 7/10 6235 days 40%
georgepearse 9/10 6272 days 42%
Aoife 8/10 6275 days 42%
Davina 8/10 6276 days 42%
Kath 10/10 6278 days 43%
Kate 8/10 6287 days 42%
Brenda 8/10 6287 days 42%
Amy 8/10 6296 days 42%
Katie 10/10 6296 days 43%
Christoffer 10/10 6298 days 43%
Rebecca 9/10 6298 days 42%
Suyin 10/10 6298 days 43%
Sarah 6/10 6307 days 37%
Michaela 9/10 6311 days 42%
Christopher 6/10 6311 days 37%
James 8/10 6311 days 42%
Sam Prior 8/10 6316 days 42%
jillian 8/10 6320 days 42%
George Burgas 9/10 6325 days 42%
stain weedman 6/10 6331 days 37%
Sharon Curly 9/10 6333 days 42%
Peddy 7/10 6337 days 40%
Tim 5/10 6353 days 32%
Thomas Fillary 9/10 6369 days 42%
Sjoerd 8/10 6375 days 42%
Gemma Harling 9/10 6375 days 42%
Charlie Bond 9/10 6382 days 42%
Florencia Cortese 10/10 6443 days 43%
Meike Biel 7/10 6451 days 40%
Helen 9/10 6451 days 42%
Ellie 9/10 6463 days 42%
Daniel 7/10 6481 days 40%
Omer Harron 9/10 6481 days 42%
Yayami Kimura 10/10 6484 days 43%
Kieran Concarr 9/10 6484 days 42%
Christian 8/10 6488 days 42%
Kathrin 9/10 6492 days 42%
Andreas Brett 8/10 6494 days 42%
Kristine Clemmensen Rotne 7/10 6494 days 40%
helga 6/10 6494 days 37%
Emily Houston 10/10 6498 days 43%
Hannah Holmes 8/10 6501 days 42%
Lisa Tame 9/10 6502 days 42%
Kelly 9/10 6505 days 42%
Stephanie 10/10 6513 days 43%
Sayaka 7/10 6513 days 40%
Marc Hertogs 8/10 6517 days 42%
Tanya Berthoud 9/10 6519 days 42%
Van Hoof 8/10 6541 days 42%
Berger 8/10 6548 days 42%
Travis Brennan 9/10 6561 days 42%
Alexis 10/10 6575 days 43%
Martine Arsac 5/10 6583 days 32%
Frida 8/10 6585 days 42%
Ben 10/10 6586 days 43%
Wendy Williams 8/10 6593 days 42%
Charlie Wilson 10/10 6668 days 43%
Ian Coldrake 8/10 6668 days 42%
Jill Bourke 10/10 6673 days 43%
Andy Chapman 8/10 6703 days 42%
Shelley 10/10 6808 days 43%
Will 9/10 6817 days 42%
Michael 9/10 6819 days 42%
Sue 8/10 6819 days 42%
Stefan 8/10 6822 days 42%
Jenny 8/10 6825 days 42%
Kate 8/10 6827 days 42%
Paul Yacoumis 7/10 6829 days 40%
Kathryn 9/10 6834 days 42%
Celia 9/10 6836 days 42%
Annelte 4/10 6837 days 27%
IdanNakash 8/10 6837 days 42%
Martin Christina 9/10 6837 days 42%
Chris 8/10 6838 days 42%
Janneke 8/10 6838 days 42%
Sue Robertson 10/10 6840 days 43%
Fenke 7/10 6843 days 40%
Bas 7/10 6843 days 40%
Daniel 9/10 6845 days 42%
Susan 6/10 6851 days 37%
ErikVanDam 9/10 6857 days 42%
MariaNorman 9/10 6857 days 42%
MarcHarris 8/10 6857 days 42%
Helena 10/10 6857 days 43%
Sarah 10/10 6866 days 43%
beesom 8/10 6867 days 42%
Peter 5/10 6871 days 32%
Sonja 7/10 6878 days 40%
Leah 8/10 6879 days 42%
Sarah 10/10 6899 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

-4.06% 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 -4.00%
198 -4.02%
199 -4.04%
200 -4.06%
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.