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Ranking Score Explained

G'day, 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 3217 days 100%
Jessica Freeland 10/10 3278 days 95%
Nanna Overbeck 10/10 3290 days 94%
Joe Rogers 9/10 3571 days 68%
Nicola Wiggan 9/10 3640 days 62%
Ben McDougal 10/10 3662 days 61%
Maria Schober 5/10 3949 days 26%
Helen Parsons 1/10 3957 days 12%
Elisa Felising 7/10 3957 days 32%
Claudia de Winter 9/10 4269 days 7%
Penny Lee 9/10 4271 days 7%
Jeroen Suijlang 8/10 4271 days 6%
Ludvig Fagerstrom 8/10 4345 days 0%
Marco Schmidt 10/10 4642 days 42%
Christian Schumacher 10/10 4642 days 42%
Jennifer Bramstad 8/10 4662 days 41%
Evelina Johansson 8/10 4662 days 41%
Sofia Anderson 10/10 4662 days 42%
Steve 5/10 4663 days 31%
Janine Kohlgrueler 9/10 4670 days 42%
Fraser Goldsmith 9/10 4687 days 42%
Nigel Leighton 10/10 4741 days 42%
Jonathan Vondette 7/10 4744 days 39%
Andreas and Christine and Nora Busch 10/10 4752 days 42%
lavonc 3/10 4783 days 22%
peterpiper 10/10 4967 days 42%
sandytemp22 10/10 4997 days 42%
Laura vanGool 10/10 5013 days 42%
Barbara Berkhout 7/10 5013 days 39%
Jurgen Joyce 8/10 5020 days 41%
Carole Carter 9/10 5020 days 42%
Sabrina Germany 9/10 5023 days 42%
J Jmal 10/10 5024 days 42%
Malena 10/10 5028 days 42%
Erik 10/10 5030 days 42%
Marion Hassink 8/10 5034 days 41%
Baas 8/10 5037 days 41%
Barbara 10/10 5038 days 42%
Rebecca Richardson 8/10 5039 days 41%
Andrew Powell 7/10 5039 days 39%
Andy Bridgman 8/10 5042 days 41%
Aoife Lillis 7/10 5045 days 39%
Rainer Schnell 8/10 5049 days 41%
Filsack 8/10 5049 days 41%
Hazel 10/10 5050 days 42%
Frank Waskikowski 9/10 5051 days 42%
Andreas Kristiansen 9/10 5051 days 42%
Robert MacLeod-Smith 8/10 5053 days 41%
Chris Marsh 6/10 5054 days 36%
Jessica Lane 7/10 5054 days 39%
Francis Corrigan 7/10 5058 days 39%
Laura Smith 9/10 5070 days 42%
Dean 8/10 5103 days 41%
Berry 10/10 5130 days 42%
Steve 9/10 5133 days 42%
MaggieYChaChi 9/10 5210 days 42%
GenH 9/10 5333 days 42%
Allison Meyoz 9/10 5339 days 42%
G Tulloch 9/10 5357 days 42%
Stephen Hunt 9/10 5359 days 42%
Thomas Klebensberger 10/10 5359 days 42%
Therea 10/10 5362 days 42%
Sean Brownell 7/10 5363 days 39%
Laura Thrower 10/10 5368 days 42%
David Taylor 9/10 5368 days 42%
Stefan Schmitz 8/10 5376 days 41%
Marii Joekalda 8/10 5377 days 41%
Frank & Ruth 6/10 5378 days 36%
Nathalie 10/10 5378 days 42%
Jo Meekley 7/10 5378 days 39%
Margit and Corein Groenevelt 8/10 5380 days 41%
Judith 9/10 5380 days 42%
Ven 8/10 5380 days 41%
Florian 8/10 5384 days 41%
Helen 9/10 5384 days 42%
Juliane Kleiu 10/10 5384 days 42%
Paula Dove 10/10 5384 days 42%
Erin 8/10 5385 days 41%
Walter Buschta 8/10 5385 days 41%
Wouter Moui 6/10 5386 days 36%
K Dahmer 8/10 5387 days 41%
Jonathan Cree 9/10 5387 days 42%
Laura Leigh 10/10 5387 days 42%
Ann-Kathrin Auditor 10/10 5388 days 42%
Katherine Forward 8/10 5388 days 41%
Chris Ashton 10/10 5388 days 42%
Jerry & Floon 7/10 5392 days 39%
Hadar Zevulun 9/10 5393 days 42%
Grumbach 9/10 5397 days 42%
Caroline Sheridan 9/10 5398 days 42%
Chris Darlington 10/10 5402 days 42%
Cheryl 10/10 5412 days 42%
Mark Aarts 9/10 5413 days 42%
Samuel Prechel 8/10 5414 days 41%
Dave and Lin Mungham 10/10 5415 days 42%
Gordon Daniels 8/10 5417 days 41%
Dr Dorthe Bossow 3/10 5418 days 22%
Helen Gilbertson 8/10 5421 days 41%
Doris Neuber 9/10 5421 days 42%
Ashleigh Buckley 8/10 5422 days 41%
PerspirationJournal 10/10 5514 days 42%
alku83 10/10 5514 days 42%
Mary Van 8/10 5575 days 41%
chloe1111 10/10 5698 days 42%
jenniferuk 9/10 5698 days 42%
Peter and Hilda 10/10 5728 days 42%
Einar 9/10 5747 days 42%
Inbar Yizhar Barnea 8/10 5747 days 41%
Tanya 9/10 5752 days 42%
Jana Steve 10/10 5753 days 42%
Yasmin Abrahams 7/10 5761 days 39%
Barbara & Sven 10/10 5761 days 42%
Judith 8/10 5765 days 41%
Henrik Hougs 8/10 5767 days 41%
Chris Glasg 9/10 5767 days 42%
Michael 10/10 5769 days 42%
Gary Ebrig 10/10 5772 days 42%
Mathias 9/10 5774 days 42%
Jamie 9/10 5779 days 42%
David Hobson 8/10 5779 days 41%
Christian 10/10 5779 days 42%
vanijzendoor 8/10 5782 days 41%
Dick Rosman 8/10 5783 days 41%
Frances Hay 8/10 5786 days 41%
Chance McGuire 10/10 5787 days 42%
Kevin and Teresa 8/10 5787 days 41%
Ben Miklozek 9/10 5787 days 42%
Marianne Lovdal 9/10 5787 days 42%
Jessica 5/10 5792 days 31%
S Luis Van Oler 6/10 5792 days 36%
sophiep 8/10 5833 days 41%
katharinatum 9/10 5833 days 42%
koellner 6/10 5847 days 36%
chrish1 9/10 5849 days 42%
Fred Findlay 7/10 5861 days 39%
maleta 9/10 5870 days 42%
Gemma Morris 10/10 5872 days 42%
TomL 10/10 5879 days 42%
Pauline Wan 7/10 5879 days 39%
eowyn2k 7/10 5879 days 39%
Suzanne 9/10 5910 days 42%
terryd 9/10 5971 days 42%
kindel 6/10 5975 days 36%
Emear Donnelly 10/10 6014 days 42%
zoed 7/10 6048 days 39%
steph_m 9/10 6063 days 42%
Charles Lyne 10/10 6063 days 42%
BenM1 7/10 6072 days 39%
KimC 8/10 6081 days 41%
JonK 8/10 6081 days 41%
TschaneK 10/10 6083 days 42%
RogerW 10/10 6085 days 42%
NicolaW 10/10 6085 days 42%
Lisa Duin 8/10 6091 days 41%
Joanna Harrnon 9/10 6092 days 42%
David 8/10 6093 days 41%
johnst 10/10 6093 days 42%
Adi 10/10 6093 days 42%
Sally477 9/10 6094 days 42%
Becca1 9/10 6095 days 42%
Jelle 8/10 6096 days 41%
Denys 8/10 6097 days 41%
Ronny 9/10 6097 days 42%
Viktoria Stoffel 10/10 6100 days 42%
Jon Li 9/10 6105 days 42%
Han Disveld 9/10 6105 days 42%
BevanLisa 10/10 6110 days 42%
SabineGermany 10/10 6111 days 42%
StefanGermany1 9/10 6111 days 42%
AnjaC 7/10 6111 days 39%
AnjaChrist 7/10 6111 days 39%
Torsten 9/10 6112 days 42%
MarcoJ 8/10 6113 days 41%
James O'Neil 10/10 6113 days 42%
Barry Smith 10/10 6113 days 42%
Siemens 8/10 6113 days 41%
AlexH 10/10 6114 days 42%
AnnickH 6/10 6115 days 36%
Rene 8/10 6116 days 41%
Dorothee 8/10 6116 days 41%
Rob 7/10 6116 days 39%
Mike 6/10 6117 days 36%
TammyH 9/10 6119 days 42%
Lynn White 7/10 6119 days 39%
Mette 8/10 6123 days 41%
Axel 5/10 6123 days 31%
amyd 8/10 6124 days 41%
Susan 9/10 6125 days 42%
lannie 5/10 6126 days 31%
XaviG 9/10 6127 days 42%
ChenM 8/10 6127 days 41%
Steven 9/10 6127 days 42%
CarleyJ 8/10 6127 days 41%
JesusB 7/10 6127 days 39%
GingerPrince 9/10 6127 days 42%
Steve 10/10 6127 days 42%
Claudia 9/10 6129 days 42%
Pascal 8/10 6129 days 41%
Karen 9/10 6132 days 42%
RandiL 7/10 6135 days 39%
IreneF 9/10 6136 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 6150 days 42%
Caroline 7/10 6150 days 39%
Eike 9/10 6157 days 42%
Benni 7/10 6159 days 39%
John 6/10 6162 days 36%
Dan 9/10 6166 days 42%
Sally 9/10 6166 days 42%
Rosa 4/10 6166 days 27%
Sascha 7/10 6167 days 39%
Dassel 8/10 6167 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 6214 days 42%
David 9/10 6218 days 42%
Laura 9/10 6218 days 42%
Adam 8/10 6223 days 41%
mike brett 7/10 6227 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 6345 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 6435 days 42%
Meike Biel 7/10 6443 days 39%
Helen 9/10 6443 days 42%
Ellie 9/10 6455 days 42%
Daniel 7/10 6473 days 39%
Omer Harron 9/10 6473 days 42%
Yayami Kimura 10/10 6476 days 42%
Kieran Concarr 9/10 6476 days 42%
Christian 8/10 6480 days 41%
Kathrin 9/10 6484 days 42%
Andreas Brett 8/10 6486 days 41%
Kristine Clemmensen Rotne 7/10 6486 days 39%
helga 6/10 6486 days 36%
Emily Houston 10/10 6490 days 42%
Hannah Holmes 8/10 6493 days 41%
Lisa Tame 9/10 6494 days 42%
Kelly 9/10 6497 days 42%
Stephanie 10/10 6505 days 42%
Sayaka 7/10 6505 days 39%
Marc Hertogs 8/10 6509 days 41%
Tanya Berthoud 9/10 6511 days 42%
Van Hoof 8/10 6533 days 41%
Berger 8/10 6540 days 41%
Travis Brennan 9/10 6552 days 42%
Alexis 10/10 6567 days 42%
Martine Arsac 5/10 6575 days 31%
Frida 8/10 6577 days 41%
Ben 10/10 6578 days 42%
Wendy Williams 8/10 6585 days 41%
Charlie Wilson 10/10 6660 days 42%
Ian Coldrake 8/10 6660 days 41%
Jill Bourke 10/10 6665 days 42%
Andy Chapman 8/10 6695 days 41%
Shelley 10/10 6800 days 42%
Will 9/10 6809 days 42%
Michael 9/10 6811 days 42%
Sue 8/10 6811 days 41%
Stefan 8/10 6814 days 41%
Jenny 8/10 6817 days 41%
Kate 8/10 6819 days 41%
Paul Yacoumis 7/10 6821 days 39%
Kathryn 9/10 6826 days 42%
Celia 9/10 6828 days 42%
Annelte 4/10 6829 days 27%
IdanNakash 8/10 6829 days 41%
Martin Christina 9/10 6829 days 42%
Chris 8/10 6830 days 41%
Janneke 8/10 6830 days 41%
Sue Robertson 10/10 6832 days 42%
Fenke 7/10 6835 days 39%
Bas 7/10 6835 days 39%
Daniel 9/10 6837 days 42%
Susan 6/10 6843 days 36%
ErikVanDam 9/10 6849 days 42%
MariaNorman 9/10 6849 days 42%
MarcHarris 8/10 6849 days 41%
Helena 10/10 6849 days 42%
Sarah 10/10 6858 days 42%
beesom 8/10 6859 days 41%
Peter 5/10 6863 days 31%
Sonja 7/10 6870 days 39%
Leah 8/10 6871 days 41%
Sarah 10/10 6891 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.