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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 3216 days 100%
Jessica Freeland 10/10 3277 days 95%
Nanna Overbeck 10/10 3289 days 94%
Joe Rogers 9/10 3570 days 68%
Nicola Wiggan 9/10 3639 days 62%
Ben McDougal 10/10 3661 days 61%
Maria Schober 5/10 3948 days 26%
Helen Parsons 1/10 3956 days 12%
Elisa Felising 7/10 3956 days 32%
Claudia de Winter 9/10 4268 days 7%
Penny Lee 9/10 4270 days 7%
Jeroen Suijlang 8/10 4270 days 6%
Ludvig Fagerstrom 8/10 4344 days 0%
Marco Schmidt 10/10 4641 days 42%
Christian Schumacher 10/10 4641 days 42%
Jennifer Bramstad 8/10 4661 days 41%
Evelina Johansson 8/10 4661 days 41%
Sofia Anderson 10/10 4661 days 42%
Steve 5/10 4662 days 31%
Janine Kohlgrueler 9/10 4669 days 42%
Fraser Goldsmith 9/10 4686 days 42%
Nigel Leighton 10/10 4740 days 42%
Jonathan Vondette 7/10 4743 days 39%
Andreas and Christine and Nora Busch 10/10 4751 days 42%
lavonc 3/10 4782 days 22%
peterpiper 10/10 4966 days 42%
sandytemp22 10/10 4996 days 42%
Laura vanGool 10/10 5012 days 42%
Barbara Berkhout 7/10 5012 days 39%
Jurgen Joyce 8/10 5019 days 41%
Carole Carter 9/10 5019 days 42%
Sabrina Germany 9/10 5022 days 42%
J Jmal 10/10 5023 days 42%
Malena 10/10 5027 days 42%
Erik 10/10 5029 days 42%
Marion Hassink 8/10 5033 days 41%
Baas 8/10 5036 days 41%
Barbara 10/10 5037 days 42%
Rebecca Richardson 8/10 5038 days 41%
Andrew Powell 7/10 5038 days 39%
Andy Bridgman 8/10 5041 days 41%
Aoife Lillis 7/10 5044 days 39%
Rainer Schnell 8/10 5048 days 41%
Filsack 8/10 5048 days 41%
Hazel 10/10 5049 days 42%
Frank Waskikowski 9/10 5050 days 42%
Andreas Kristiansen 9/10 5050 days 42%
Robert MacLeod-Smith 8/10 5052 days 41%
Chris Marsh 6/10 5053 days 36%
Jessica Lane 7/10 5053 days 39%
Francis Corrigan 7/10 5057 days 39%
Laura Smith 9/10 5069 days 42%
Dean 8/10 5102 days 41%
Berry 10/10 5129 days 42%
Steve 9/10 5132 days 42%
MaggieYChaChi 9/10 5209 days 42%
GenH 9/10 5332 days 42%
Allison Meyoz 9/10 5338 days 42%
G Tulloch 9/10 5356 days 42%
Stephen Hunt 9/10 5358 days 42%
Thomas Klebensberger 10/10 5358 days 42%
Therea 10/10 5361 days 42%
Sean Brownell 7/10 5362 days 39%
Laura Thrower 10/10 5367 days 42%
David Taylor 9/10 5367 days 42%
Stefan Schmitz 8/10 5375 days 41%
Marii Joekalda 8/10 5376 days 41%
Frank & Ruth 6/10 5377 days 36%
Nathalie 10/10 5377 days 42%
Jo Meekley 7/10 5377 days 39%
Margit and Corein Groenevelt 8/10 5379 days 41%
Judith 9/10 5379 days 42%
Ven 8/10 5379 days 41%
Florian 8/10 5383 days 41%
Helen 9/10 5383 days 42%
Juliane Kleiu 10/10 5383 days 42%
Paula Dove 10/10 5383 days 42%
Erin 8/10 5384 days 41%
Walter Buschta 8/10 5384 days 41%
Wouter Moui 6/10 5385 days 36%
K Dahmer 8/10 5386 days 41%
Jonathan Cree 9/10 5386 days 42%
Laura Leigh 10/10 5386 days 42%
Ann-Kathrin Auditor 10/10 5387 days 42%
Katherine Forward 8/10 5387 days 41%
Chris Ashton 10/10 5387 days 42%
Jerry & Floon 7/10 5391 days 39%
Hadar Zevulun 9/10 5392 days 42%
Grumbach 9/10 5396 days 42%
Caroline Sheridan 9/10 5397 days 42%
Chris Darlington 10/10 5401 days 42%
Cheryl 10/10 5411 days 42%
Mark Aarts 9/10 5412 days 42%
Samuel Prechel 8/10 5413 days 41%
Dave and Lin Mungham 10/10 5414 days 42%
Gordon Daniels 8/10 5416 days 41%
Dr Dorthe Bossow 3/10 5417 days 22%
Helen Gilbertson 8/10 5420 days 41%
Doris Neuber 9/10 5420 days 42%
Ashleigh Buckley 8/10 5421 days 41%
PerspirationJournal 10/10 5513 days 42%
alku83 10/10 5513 days 42%
Mary Van 8/10 5574 days 41%
chloe1111 10/10 5697 days 42%
jenniferuk 9/10 5697 days 42%
Peter and Hilda 10/10 5727 days 42%
Einar 9/10 5746 days 42%
Inbar Yizhar Barnea 8/10 5746 days 41%
Tanya 9/10 5751 days 42%
Jana Steve 10/10 5752 days 42%
Yasmin Abrahams 7/10 5760 days 39%
Barbara & Sven 10/10 5760 days 42%
Judith 8/10 5764 days 41%
Henrik Hougs 8/10 5766 days 41%
Chris Glasg 9/10 5766 days 42%
Michael 10/10 5768 days 42%
Gary Ebrig 10/10 5771 days 42%
Mathias 9/10 5773 days 42%
Jamie 9/10 5778 days 42%
David Hobson 8/10 5778 days 41%
Christian 10/10 5778 days 42%
vanijzendoor 8/10 5781 days 41%
Dick Rosman 8/10 5782 days 41%
Frances Hay 8/10 5785 days 41%
Chance McGuire 10/10 5786 days 42%
Kevin and Teresa 8/10 5786 days 41%
Ben Miklozek 9/10 5786 days 42%
Marianne Lovdal 9/10 5786 days 42%
Jessica 5/10 5791 days 31%
S Luis Van Oler 6/10 5791 days 36%
sophiep 8/10 5832 days 41%
katharinatum 9/10 5832 days 42%
koellner 6/10 5846 days 36%
chrish1 9/10 5848 days 42%
Fred Findlay 7/10 5860 days 39%
maleta 9/10 5869 days 42%
Gemma Morris 10/10 5871 days 42%
TomL 10/10 5878 days 42%
Pauline Wan 7/10 5878 days 39%
eowyn2k 7/10 5878 days 39%
Suzanne 9/10 5909 days 42%
terryd 9/10 5970 days 42%
kindel 6/10 5974 days 36%
Emear Donnelly 10/10 6013 days 42%
zoed 7/10 6047 days 39%
steph_m 9/10 6062 days 42%
Charles Lyne 10/10 6062 days 42%
BenM1 7/10 6071 days 39%
KimC 8/10 6080 days 41%
JonK 8/10 6080 days 41%
TschaneK 10/10 6082 days 42%
RogerW 10/10 6084 days 42%
NicolaW 10/10 6084 days 42%
Lisa Duin 8/10 6090 days 41%
Joanna Harrnon 9/10 6091 days 42%
David 8/10 6092 days 41%
johnst 10/10 6092 days 42%
Adi 10/10 6093 days 42%
Sally477 9/10 6093 days 42%
Becca1 9/10 6094 days 42%
Jelle 8/10 6095 days 41%
Denys 8/10 6097 days 41%
Ronny 9/10 6097 days 42%
Viktoria Stoffel 10/10 6099 days 42%
Jon Li 9/10 6104 days 42%
Han Disveld 9/10 6104 days 42%
BevanLisa 10/10 6109 days 42%
SabineGermany 10/10 6110 days 42%
StefanGermany1 9/10 6110 days 42%
AnjaC 7/10 6110 days 39%
AnjaChrist 7/10 6110 days 39%
Torsten 9/10 6112 days 42%
MarcoJ 8/10 6112 days 41%
James O'Neil 10/10 6112 days 42%
Barry Smith 10/10 6112 days 42%
Siemens 8/10 6112 days 41%
AlexH 10/10 6113 days 42%
AnnickH 6/10 6114 days 36%
Rene 8/10 6116 days 41%
Dorothee 8/10 6116 days 41%
Rob 7/10 6116 days 39%
Mike 6/10 6116 days 36%
TammyH 9/10 6118 days 42%
Lynn White 7/10 6119 days 39%
Mette 8/10 6123 days 41%
Axel 5/10 6123 days 31%
amyd 8/10 6123 days 41%
Susan 9/10 6125 days 42%
lannie 5/10 6126 days 31%
XaviG 9/10 6126 days 42%
ChenM 8/10 6126 days 41%
Steven 9/10 6126 days 42%
CarleyJ 8/10 6126 days 41%
JesusB 7/10 6126 days 39%
GingerPrince 9/10 6126 days 42%
Steve 10/10 6126 days 42%
Claudia 9/10 6129 days 42%
Pascal 8/10 6129 days 41%
Karen 9/10 6132 days 42%
RandiL 7/10 6134 days 39%
IreneF 9/10 6135 days 42%
Rachel 8/10 6142 days 41%
Adi 10/10 6142 days 42%
Claire 8/10 6142 days 41%
Philippa 9/10 6143 days 42%
Conway 9/10 6143 days 42%
orianne 10/10 6149 days 42%
Caroline 7/10 6150 days 39%
Eike 9/10 6157 days 42%
Benni 7/10 6158 days 39%
John 6/10 6162 days 36%
Dan 9/10 6165 days 42%
Sally 9/10 6165 days 42%
Rosa 4/10 6166 days 26%
Sascha 7/10 6166 days 39%
Dassel 8/10 6166 days 41%
Eric 3/10 6168 days 22%
Charlie 9/10 6173 days 42%
tommfuller 7/10 6177 days 39%
Anouk 9/10 6205 days 42%
MissTraveller2009 10/10 6213 days 42%
David 9/10 6218 days 42%
Laura 9/10 6218 days 42%
Adam 8/10 6223 days 41%
mike brett 7/10 6226 days 39%
georgepearse 9/10 6264 days 42%
Aoife 8/10 6267 days 41%
Davina 8/10 6268 days 41%
Kath 10/10 6270 days 42%
Kate 8/10 6279 days 41%
Brenda 8/10 6279 days 41%
Amy 8/10 6288 days 41%
Katie 10/10 6288 days 42%
Christoffer 10/10 6290 days 42%
Rebecca 9/10 6290 days 42%
Suyin 10/10 6290 days 42%
Sarah 6/10 6299 days 36%
Michaela 9/10 6303 days 42%
Christopher 6/10 6303 days 36%
James 8/10 6303 days 41%
Sam Prior 8/10 6308 days 41%
jillian 8/10 6312 days 41%
George Burgas 9/10 6317 days 42%
stain weedman 6/10 6323 days 36%
Sharon Curly 9/10 6325 days 42%
Peddy 7/10 6329 days 39%
Tim 5/10 6344 days 31%
Thomas Fillary 9/10 6361 days 42%
Sjoerd 8/10 6367 days 41%
Gemma Harling 9/10 6367 days 42%
Charlie Bond 9/10 6374 days 42%
Florencia Cortese 10/10 6434 days 42%
Meike Biel 7/10 6442 days 39%
Helen 9/10 6442 days 42%
Ellie 9/10 6455 days 42%
Daniel 7/10 6472 days 39%
Omer Harron 9/10 6472 days 42%
Yayami Kimura 10/10 6475 days 42%
Kieran Concarr 9/10 6475 days 42%
Christian 8/10 6479 days 41%
Kathrin 9/10 6483 days 42%
Andreas Brett 8/10 6485 days 41%
Kristine Clemmensen Rotne 7/10 6485 days 39%
helga 6/10 6486 days 36%
Emily Houston 10/10 6489 days 42%
Hannah Holmes 8/10 6492 days 41%
Lisa Tame 9/10 6493 days 42%
Kelly 9/10 6496 days 42%
Stephanie 10/10 6504 days 42%
Sayaka 7/10 6504 days 39%
Marc Hertogs 8/10 6508 days 41%
Tanya Berthoud 9/10 6510 days 42%
Van Hoof 8/10 6532 days 41%
Berger 8/10 6539 days 41%
Travis Brennan 9/10 6552 days 42%
Alexis 10/10 6566 days 42%
Martine Arsac 5/10 6574 days 31%
Frida 8/10 6576 days 41%
Ben 10/10 6577 days 42%
Wendy Williams 8/10 6584 days 41%
Charlie Wilson 10/10 6659 days 42%
Ian Coldrake 8/10 6659 days 41%
Jill Bourke 10/10 6664 days 42%
Andy Chapman 8/10 6694 days 41%
Shelley 10/10 6799 days 42%
Will 9/10 6808 days 42%
Michael 9/10 6810 days 42%
Sue 8/10 6810 days 41%
Stefan 8/10 6813 days 41%
Jenny 8/10 6816 days 41%
Kate 8/10 6818 days 41%
Paul Yacoumis 7/10 6820 days 39%
Kathryn 9/10 6825 days 42%
Celia 9/10 6827 days 42%
Annelte 4/10 6828 days 26%
IdanNakash 8/10 6828 days 41%
Martin Christina 9/10 6828 days 42%
Chris 8/10 6829 days 41%
Janneke 8/10 6829 days 41%
Sue Robertson 10/10 6831 days 42%
Fenke 7/10 6834 days 39%
Bas 7/10 6834 days 39%
Daniel 9/10 6836 days 42%
Susan 6/10 6842 days 36%
ErikVanDam 9/10 6848 days 42%
MariaNorman 9/10 6848 days 42%
MarcHarris 8/10 6848 days 41%
Helena 10/10 6848 days 42%
Sarah 10/10 6857 days 42%
beesom 8/10 6858 days 41%
Peter 5/10 6862 days 31%
Sonja 7/10 6869 days 39%
Leah 8/10 6870 days 41%
Sarah 10/10 6890 days 42%

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

-4.07% 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 -4.01%
198 -4.03%
199 -4.05%
200 -4.07%
201 -4.09%
202 -4.11%
203 -4.13%
… …

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.