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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.

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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

85.17%

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 2962 days 100%
Jessica Freeland 10/10 3023 days 95%
Nanna Overbeck 10/10 3035 days 94%
Joe Rogers 9/10 3316 days 68%
Nicola Wiggan 9/10 3385 days 62%
Ben McDougal 10/10 3407 days 61%
Maria Schober 5/10 3694 days 22%
Helen Parsons 1/10 3702 days 0%
Elisa Felising 7/10 3702 days 31%
Claudia de Winter 9/10 4014 days 8%
Penny Lee 9/10 4016 days 7%
Jeroen Suijlang 8/10 4016 days 7%
Ludvig Fagerstrom 8/10 4090 days 1%
Marco Schmidt 10/10 4387 days 21%
Christian Schumacher 10/10 4387 days 21%
Jennifer Bramstad 8/10 4407 days 20%
Evelina Johansson 8/10 4407 days 20%
Sofia Anderson 10/10 4407 days 21%
Steve 5/10 4408 days 10%
Janine Kohlgrueler 9/10 4415 days 20%
Fraser Goldsmith 9/10 4432 days 20%
Nigel Leighton 10/10 4486 days 21%
Jonathan Vondette 7/10 4489 days 18%
Andreas and Christine and Nora Busch 10/10 4497 days 21%
lavonc 3/10 4528 days 0%
peterpiper 10/10 4712 days 21%
sandytemp22 10/10 4742 days 21%
Laura vanGool 10/10 4758 days 21%
Barbara Berkhout 7/10 4758 days 18%
Jurgen Joyce 8/10 4765 days 20%
Carole Carter 9/10 4765 days 20%
Sabrina Germany 9/10 4768 days 20%
J Jmal 10/10 4769 days 21%
Malena 10/10 4773 days 21%
Erik 10/10 4775 days 21%
Marion Hassink 8/10 4779 days 20%
Baas 8/10 4782 days 20%
Barbara 10/10 4783 days 21%
Rebecca Richardson 8/10 4784 days 20%
Andrew Powell 7/10 4784 days 18%
Andy Bridgman 8/10 4787 days 20%
Aoife Lillis 7/10 4790 days 18%
Rainer Schnell 8/10 4794 days 20%
Filsack 8/10 4794 days 20%
Hazel 10/10 4795 days 21%
Frank Waskikowski 9/10 4796 days 20%
Andreas Kristiansen 9/10 4796 days 20%
Robert MacLeod-Smith 8/10 4798 days 20%
Chris Marsh 6/10 4799 days 14%
Jessica Lane 7/10 4799 days 18%
Francis Corrigan 7/10 4803 days 18%
Laura Smith 9/10 4815 days 20%
Dean 8/10 4848 days 20%
Berry 10/10 4875 days 21%
Steve 9/10 4878 days 20%
MaggieYChaChi 9/10 4955 days 20%
GenH 9/10 5078 days 20%
Allison Meyoz 9/10 5084 days 20%
G Tulloch 9/10 5102 days 20%
Stephen Hunt 9/10 5104 days 20%
Thomas Klebensberger 10/10 5104 days 21%
Therea 10/10 5107 days 21%
Sean Brownell 7/10 5108 days 18%
Laura Thrower 10/10 5113 days 21%
David Taylor 9/10 5113 days 20%
Stefan Schmitz 8/10 5121 days 20%
Marii Joekalda 8/10 5122 days 20%
Frank & Ruth 6/10 5123 days 14%
Nathalie 10/10 5123 days 21%
Jo Meekley 7/10 5123 days 18%
Margit and Corein Groenevelt 8/10 5125 days 20%
Judith 9/10 5125 days 20%
Ven 8/10 5125 days 20%
Florian 8/10 5129 days 20%
Helen 9/10 5129 days 20%
Juliane Kleiu 10/10 5129 days 21%
Paula Dove 10/10 5129 days 21%
Erin 8/10 5130 days 20%
Walter Buschta 8/10 5130 days 20%
Wouter Moui 6/10 5131 days 14%
K Dahmer 8/10 5132 days 20%
Jonathan Cree 9/10 5132 days 20%
Laura Leigh 10/10 5132 days 21%
Ann-Kathrin Auditor 10/10 5133 days 21%
Katherine Forward 8/10 5133 days 20%
Chris Ashton 10/10 5133 days 21%
Jerry & Floon 7/10 5137 days 18%
Hadar Zevulun 9/10 5138 days 20%
Grumbach 9/10 5142 days 20%
Caroline Sheridan 9/10 5143 days 20%
Chris Darlington 10/10 5147 days 21%
Cheryl 10/10 5157 days 21%
Mark Aarts 9/10 5158 days 20%
Samuel Prechel 8/10 5159 days 20%
Dave and Lin Mungham 10/10 5160 days 21%
Gordon Daniels 8/10 5162 days 20%
Dr Dorthe Bossow 3/10 5163 days 0%
Helen Gilbertson 8/10 5166 days 20%
Doris Neuber 9/10 5166 days 20%
Ashleigh Buckley 8/10 5167 days 20%
PerspirationJournal 10/10 5259 days 21%
alku83 10/10 5259 days 21%
Mary Van 8/10 5320 days 20%
chloe1111 10/10 5443 days 21%
jenniferuk 9/10 5443 days 20%
Peter and Hilda 10/10 5473 days 21%
Einar 9/10 5492 days 20%
Inbar Yizhar Barnea 8/10 5492 days 20%
Tanya 9/10 5497 days 20%
Jana Steve 10/10 5498 days 21%
Yasmin Abrahams 7/10 5506 days 18%
Barbara & Sven 10/10 5506 days 21%
Judith 8/10 5510 days 20%
Henrik Hougs 8/10 5512 days 20%
Chris Glasg 9/10 5512 days 20%
Michael 10/10 5514 days 21%
Gary Ebrig 10/10 5517 days 21%
Mathias 9/10 5519 days 20%
Jamie 9/10 5524 days 20%
David Hobson 8/10 5524 days 20%
Christian 10/10 5524 days 21%
vanijzendoor 8/10 5527 days 20%
Dick Rosman 8/10 5528 days 20%
Frances Hay 8/10 5531 days 20%
Chance McGuire 10/10 5532 days 21%
Kevin and Teresa 8/10 5532 days 20%
Ben Miklozek 9/10 5532 days 20%
Marianne Lovdal 9/10 5532 days 20%
Jessica 5/10 5537 days 10%
S Luis Van Oler 6/10 5537 days 14%
sophiep 8/10 5578 days 20%
katharinatum 9/10 5578 days 20%
koellner 6/10 5592 days 14%
chrish1 9/10 5594 days 20%
Fred Findlay 7/10 5606 days 18%
maleta 9/10 5615 days 20%
Gemma Morris 10/10 5617 days 21%
TomL 10/10 5624 days 21%
Pauline Wan 7/10 5624 days 18%
eowyn2k 7/10 5624 days 18%
Suzanne 9/10 5655 days 20%
terryd 9/10 5716 days 20%
kindel 6/10 5720 days 14%
Emear Donnelly 10/10 5759 days 21%
zoed 7/10 5793 days 18%
steph_m 9/10 5808 days 20%
Charles Lyne 10/10 5808 days 21%
BenM1 7/10 5817 days 18%
KimC 8/10 5826 days 20%
JonK 8/10 5826 days 20%
TschaneK 10/10 5828 days 21%
RogerW 10/10 5830 days 21%
NicolaW 10/10 5830 days 21%
Lisa Duin 8/10 5836 days 20%
Joanna Harrnon 9/10 5837 days 20%
David 8/10 5838 days 20%
johnst 10/10 5838 days 21%
Adi 10/10 5838 days 21%
Sally477 9/10 5839 days 20%
Becca1 9/10 5840 days 20%
Jelle 8/10 5841 days 20%
Denys 8/10 5842 days 20%
Ronny 9/10 5842 days 20%
Viktoria Stoffel 10/10 5845 days 21%
Jon Li 9/10 5850 days 20%
Han Disveld 9/10 5850 days 20%
BevanLisa 10/10 5855 days 21%
SabineGermany 10/10 5856 days 21%
StefanGermany1 9/10 5856 days 20%
AnjaC 7/10 5856 days 18%
AnjaChrist 7/10 5856 days 18%
Torsten 9/10 5857 days 20%
MarcoJ 8/10 5858 days 20%
James O'Neil 10/10 5858 days 21%
Barry Smith 10/10 5858 days 21%
Siemens 8/10 5858 days 20%
AlexH 10/10 5859 days 21%
AnnickH 6/10 5860 days 14%
Rene 8/10 5861 days 20%
Dorothee 8/10 5861 days 20%
Rob 7/10 5861 days 18%
Mike 6/10 5862 days 14%
TammyH 9/10 5864 days 20%
Lynn White 7/10 5864 days 18%
Mette 8/10 5868 days 20%
Axel 5/10 5868 days 10%
amyd 8/10 5869 days 20%
Susan 9/10 5870 days 20%
lannie 5/10 5871 days 10%
XaviG 9/10 5872 days 20%
ChenM 8/10 5872 days 20%
Steven 9/10 5872 days 20%
CarleyJ 8/10 5872 days 20%
JesusB 7/10 5872 days 18%
GingerPrince 9/10 5872 days 20%
Steve 10/10 5872 days 21%
Claudia 9/10 5874 days 20%
Pascal 8/10 5874 days 20%
Karen 9/10 5877 days 20%
RandiL 7/10 5880 days 18%
IreneF 9/10 5881 days 20%
Rachel 8/10 5887 days 20%
Adi 10/10 5887 days 21%
Claire 8/10 5887 days 20%
Philippa 9/10 5888 days 20%
Conway 9/10 5888 days 20%
orianne 10/10 5895 days 21%
Caroline 7/10 5895 days 18%
Eike 9/10 5902 days 20%
Benni 7/10 5904 days 18%
John 6/10 5907 days 14%
Dan 9/10 5911 days 20%
Sally 9/10 5911 days 20%
Rosa 4/10 5911 days 5%
Sascha 7/10 5912 days 18%
Dassel 8/10 5912 days 20%
Eric 3/10 5913 days 0%
Charlie 9/10 5918 days 20%
tommfuller 7/10 5922 days 18%
Anouk 9/10 5950 days 20%
MissTraveller2009 10/10 5959 days 21%
David 9/10 5963 days 20%
Laura 9/10 5963 days 20%
Adam 8/10 5968 days 20%
mike brett 7/10 5972 days 18%
georgepearse 9/10 6009 days 20%
Aoife 8/10 6012 days 20%
Davina 8/10 6013 days 20%
Kath 10/10 6015 days 21%
Kate 8/10 6024 days 20%
Brenda 8/10 6024 days 20%
Amy 8/10 6033 days 20%
Katie 10/10 6033 days 21%
Christoffer 10/10 6035 days 21%
Rebecca 9/10 6035 days 20%
Suyin 10/10 6035 days 21%
Sarah 6/10 6044 days 14%
Michaela 9/10 6048 days 20%
Christopher 6/10 6048 days 14%
James 8/10 6048 days 20%
Sam Prior 8/10 6053 days 20%
jillian 8/10 6057 days 20%
George Burgas 9/10 6062 days 20%
stain weedman 6/10 6068 days 14%
Sharon Curly 9/10 6070 days 20%
Peddy 7/10 6074 days 18%
Tim 5/10 6090 days 10%
Thomas Fillary 9/10 6106 days 20%
Sjoerd 8/10 6112 days 20%
Gemma Harling 9/10 6112 days 20%
Charlie Bond 9/10 6119 days 20%
Florencia Cortese 10/10 6180 days 21%
Meike Biel 7/10 6188 days 18%
Helen 9/10 6188 days 20%
Ellie 9/10 6200 days 20%
Daniel 7/10 6218 days 18%
Omer Harron 9/10 6218 days 20%
Yayami Kimura 10/10 6221 days 21%
Kieran Concarr 9/10 6221 days 20%
Christian 8/10 6225 days 20%
Kathrin 9/10 6229 days 20%
Andreas Brett 8/10 6231 days 20%
Kristine Clemmensen Rotne 7/10 6231 days 18%
helga 6/10 6231 days 14%
Emily Houston 10/10 6235 days 21%
Hannah Holmes 8/10 6238 days 20%
Lisa Tame 9/10 6239 days 20%
Kelly 9/10 6242 days 20%
Stephanie 10/10 6250 days 21%
Sayaka 7/10 6250 days 18%
Marc Hertogs 8/10 6254 days 20%
Tanya Berthoud 9/10 6256 days 20%
Van Hoof 8/10 6278 days 20%
Berger 8/10 6285 days 20%
Travis Brennan 9/10 6297 days 20%
Alexis 10/10 6312 days 21%
Martine Arsac 5/10 6320 days 10%
Frida 8/10 6322 days 20%
Ben 10/10 6323 days 21%
Wendy Williams 8/10 6330 days 20%
Charlie Wilson 10/10 6405 days 21%
Ian Coldrake 8/10 6405 days 20%
Jill Bourke 10/10 6410 days 21%
Andy Chapman 8/10 6440 days 20%
Shelley 10/10 6545 days 21%
Will 9/10 6554 days 20%
Michael 9/10 6556 days 20%
Sue 8/10 6556 days 20%
Stefan 8/10 6559 days 20%
Jenny 8/10 6562 days 20%
Kate 8/10 6564 days 20%
Paul Yacoumis 7/10 6566 days 18%
Kathryn 9/10 6571 days 20%
Celia 9/10 6573 days 20%
Annelte 4/10 6574 days 5%
IdanNakash 8/10 6574 days 20%
Martin Christina 9/10 6574 days 20%
Chris 8/10 6575 days 20%
Janneke 8/10 6575 days 20%
Sue Robertson 10/10 6577 days 21%
Fenke 7/10 6580 days 18%
Bas 7/10 6580 days 18%
Daniel 9/10 6582 days 20%
Susan 6/10 6588 days 14%
ErikVanDam 9/10 6594 days 20%
MariaNorman 9/10 6594 days 20%
MarcHarris 8/10 6594 days 20%
Helena 10/10 6594 days 21%
Sarah 10/10 6603 days 21%
beesom 8/10 6604 days 20%
Peter 5/10 6608 days 10%
Sonja 7/10 6615 days 18%
Leah 8/10 6616 days 20%
Sarah 10/10 6636 days 21%

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

-3.84% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 59 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 -3.78%
198 -3.80%
199 -3.82%
200 -3.84%
201 -3.86%
202 -3.88%
203 -3.90%
… …

Balancing Adjustment

2.65% 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.