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Ranking Score Explained

Hi, 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 2975 days 100%
Jessica Freeland 10/10 3036 days 95%
Nanna Overbeck 10/10 3048 days 94%
Joe Rogers 9/10 3329 days 68%
Nicola Wiggan 9/10 3398 days 62%
Ben McDougal 10/10 3420 days 61%
Maria Schober 5/10 3707 days 21%
Helen Parsons 1/10 3715 days 0%
Elisa Felising 7/10 3715 days 31%
Claudia de Winter 9/10 4027 days 7%
Penny Lee 9/10 4029 days 7%
Jeroen Suijlang 8/10 4029 days 7%
Ludvig Fagerstrom 8/10 4103 days 0%
Marco Schmidt 10/10 4400 days 21%
Christian Schumacher 10/10 4400 days 21%
Jennifer Bramstad 8/10 4420 days 20%
Evelina Johansson 8/10 4420 days 20%
Sofia Anderson 10/10 4420 days 21%
Steve 5/10 4421 days 11%
Janine Kohlgrueler 9/10 4428 days 21%
Fraser Goldsmith 9/10 4445 days 21%
Nigel Leighton 10/10 4499 days 21%
Jonathan Vondette 7/10 4502 days 18%
Andreas and Christine and Nora Busch 10/10 4510 days 21%
lavonc 3/10 4541 days 1%
peterpiper 10/10 4725 days 21%
sandytemp22 10/10 4755 days 21%
Laura vanGool 10/10 4771 days 21%
Barbara Berkhout 7/10 4771 days 18%
Jurgen Joyce 8/10 4778 days 20%
Carole Carter 9/10 4778 days 21%
Sabrina Germany 9/10 4781 days 21%
J Jmal 10/10 4782 days 21%
Malena 10/10 4786 days 21%
Erik 10/10 4788 days 21%
Marion Hassink 8/10 4792 days 20%
Baas 8/10 4795 days 20%
Barbara 10/10 4796 days 21%
Rebecca Richardson 8/10 4797 days 20%
Andrew Powell 7/10 4797 days 18%
Andy Bridgman 8/10 4800 days 20%
Aoife Lillis 7/10 4803 days 18%
Rainer Schnell 8/10 4807 days 20%
Filsack 8/10 4807 days 20%
Hazel 10/10 4808 days 21%
Frank Waskikowski 9/10 4809 days 21%
Andreas Kristiansen 9/10 4809 days 21%
Robert MacLeod-Smith 8/10 4811 days 20%
Chris Marsh 6/10 4812 days 15%
Jessica Lane 7/10 4812 days 18%
Francis Corrigan 7/10 4816 days 18%
Laura Smith 9/10 4828 days 21%
Dean 8/10 4861 days 20%
Berry 10/10 4888 days 21%
Steve 9/10 4891 days 21%
MaggieYChaChi 9/10 4968 days 21%
GenH 9/10 5091 days 21%
Allison Meyoz 9/10 5097 days 21%
G Tulloch 9/10 5115 days 21%
Stephen Hunt 9/10 5117 days 21%
Thomas Klebensberger 10/10 5117 days 21%
Therea 10/10 5120 days 21%
Sean Brownell 7/10 5121 days 18%
Laura Thrower 10/10 5126 days 21%
David Taylor 9/10 5126 days 21%
Stefan Schmitz 8/10 5134 days 20%
Marii Joekalda 8/10 5135 days 20%
Frank & Ruth 6/10 5136 days 15%
Nathalie 10/10 5136 days 21%
Jo Meekley 7/10 5136 days 18%
Margit and Corein Groenevelt 8/10 5138 days 20%
Judith 9/10 5138 days 21%
Ven 8/10 5138 days 20%
Florian 8/10 5142 days 20%
Helen 9/10 5142 days 21%
Juliane Kleiu 10/10 5142 days 21%
Paula Dove 10/10 5142 days 21%
Erin 8/10 5143 days 20%
Walter Buschta 8/10 5143 days 20%
Wouter Moui 6/10 5144 days 15%
K Dahmer 8/10 5145 days 20%
Jonathan Cree 9/10 5145 days 21%
Laura Leigh 10/10 5145 days 21%
Ann-Kathrin Auditor 10/10 5146 days 21%
Katherine Forward 8/10 5146 days 20%
Chris Ashton 10/10 5146 days 21%
Jerry & Floon 7/10 5150 days 18%
Hadar Zevulun 9/10 5151 days 21%
Grumbach 9/10 5155 days 21%
Caroline Sheridan 9/10 5156 days 21%
Chris Darlington 10/10 5160 days 21%
Cheryl 10/10 5170 days 21%
Mark Aarts 9/10 5171 days 21%
Samuel Prechel 8/10 5172 days 20%
Dave and Lin Mungham 10/10 5173 days 21%
Gordon Daniels 8/10 5175 days 20%
Dr Dorthe Bossow 3/10 5176 days 1%
Helen Gilbertson 8/10 5179 days 20%
Doris Neuber 9/10 5179 days 21%
Ashleigh Buckley 8/10 5180 days 20%
PerspirationJournal 10/10 5272 days 21%
alku83 10/10 5272 days 21%
Mary Van 8/10 5333 days 20%
chloe1111 10/10 5456 days 21%
jenniferuk 9/10 5456 days 21%
Peter and Hilda 10/10 5486 days 21%
Einar 9/10 5505 days 21%
Inbar Yizhar Barnea 8/10 5505 days 20%
Tanya 9/10 5510 days 21%
Jana Steve 10/10 5511 days 21%
Yasmin Abrahams 7/10 5519 days 18%
Barbara & Sven 10/10 5519 days 21%
Judith 8/10 5523 days 20%
Henrik Hougs 8/10 5525 days 20%
Chris Glasg 9/10 5525 days 21%
Michael 10/10 5527 days 21%
Gary Ebrig 10/10 5530 days 21%
Mathias 9/10 5532 days 21%
Jamie 9/10 5537 days 21%
David Hobson 8/10 5537 days 20%
Christian 10/10 5537 days 21%
vanijzendoor 8/10 5540 days 20%
Dick Rosman 8/10 5541 days 20%
Frances Hay 8/10 5544 days 20%
Chance McGuire 10/10 5545 days 21%
Kevin and Teresa 8/10 5545 days 20%
Ben Miklozek 9/10 5545 days 21%
Marianne Lovdal 9/10 5545 days 21%
Jessica 5/10 5550 days 11%
S Luis Van Oler 6/10 5550 days 15%
sophiep 8/10 5591 days 20%
katharinatum 9/10 5591 days 21%
koellner 6/10 5605 days 15%
chrish1 9/10 5607 days 21%
Fred Findlay 7/10 5619 days 18%
maleta 9/10 5628 days 21%
Gemma Morris 10/10 5630 days 21%
TomL 10/10 5637 days 21%
Pauline Wan 7/10 5637 days 18%
eowyn2k 7/10 5637 days 18%
Suzanne 9/10 5668 days 21%
terryd 9/10 5729 days 21%
kindel 6/10 5733 days 15%
Emear Donnelly 10/10 5772 days 21%
zoed 7/10 5806 days 18%
steph_m 9/10 5821 days 21%
Charles Lyne 10/10 5821 days 21%
BenM1 7/10 5830 days 18%
KimC 8/10 5839 days 20%
JonK 8/10 5839 days 20%
TschaneK 10/10 5841 days 21%
RogerW 10/10 5843 days 21%
NicolaW 10/10 5843 days 21%
Lisa Duin 8/10 5849 days 20%
Joanna Harrnon 9/10 5850 days 21%
David 8/10 5851 days 20%
johnst 10/10 5851 days 21%
Adi 10/10 5851 days 21%
Sally477 9/10 5852 days 21%
Becca1 9/10 5853 days 21%
Jelle 8/10 5854 days 20%
Denys 8/10 5855 days 20%
Ronny 9/10 5855 days 21%
Viktoria Stoffel 10/10 5858 days 21%
Jon Li 9/10 5863 days 21%
Han Disveld 9/10 5863 days 21%
BevanLisa 10/10 5868 days 21%
SabineGermany 10/10 5869 days 21%
StefanGermany1 9/10 5869 days 21%
AnjaC 7/10 5869 days 18%
AnjaChrist 7/10 5869 days 18%
Torsten 9/10 5870 days 21%
MarcoJ 8/10 5871 days 20%
James O'Neil 10/10 5871 days 21%
Barry Smith 10/10 5871 days 21%
Siemens 8/10 5871 days 20%
AlexH 10/10 5872 days 21%
AnnickH 6/10 5873 days 15%
Rene 8/10 5874 days 20%
Dorothee 8/10 5874 days 20%
Rob 7/10 5874 days 18%
Mike 6/10 5875 days 15%
TammyH 9/10 5877 days 21%
Lynn White 7/10 5877 days 18%
Mette 8/10 5881 days 20%
Axel 5/10 5881 days 11%
amyd 8/10 5882 days 20%
Susan 9/10 5883 days 21%
lannie 5/10 5884 days 11%
XaviG 9/10 5885 days 21%
ChenM 8/10 5885 days 20%
Steven 9/10 5885 days 21%
CarleyJ 8/10 5885 days 20%
JesusB 7/10 5885 days 18%
GingerPrince 9/10 5885 days 21%
Steve 10/10 5885 days 21%
Claudia 9/10 5887 days 21%
Pascal 8/10 5887 days 20%
Karen 9/10 5890 days 21%
RandiL 7/10 5893 days 18%
IreneF 9/10 5894 days 21%
Rachel 8/10 5900 days 20%
Adi 10/10 5900 days 21%
Claire 8/10 5900 days 20%
Philippa 9/10 5901 days 21%
Conway 9/10 5901 days 21%
orianne 10/10 5908 days 21%
Caroline 7/10 5908 days 18%
Eike 9/10 5915 days 21%
Benni 7/10 5917 days 18%
John 6/10 5920 days 15%
Dan 9/10 5924 days 21%
Sally 9/10 5924 days 21%
Rosa 4/10 5924 days 6%
Sascha 7/10 5925 days 18%
Dassel 8/10 5925 days 20%
Eric 3/10 5926 days 1%
Charlie 9/10 5931 days 21%
tommfuller 7/10 5935 days 18%
Anouk 9/10 5963 days 21%
MissTraveller2009 10/10 5972 days 21%
David 9/10 5977 days 21%
Laura 9/10 5977 days 21%
Adam 8/10 5981 days 20%
mike brett 7/10 5985 days 18%
georgepearse 9/10 6022 days 21%
Aoife 8/10 6025 days 20%
Davina 8/10 6026 days 20%
Kath 10/10 6028 days 21%
Kate 8/10 6037 days 20%
Brenda 8/10 6037 days 20%
Amy 8/10 6046 days 20%
Katie 10/10 6046 days 21%
Christoffer 10/10 6049 days 21%
Rebecca 9/10 6049 days 21%
Suyin 10/10 6049 days 21%
Sarah 6/10 6057 days 15%
Michaela 9/10 6061 days 21%
Christopher 6/10 6061 days 15%
James 8/10 6061 days 20%
Sam Prior 8/10 6066 days 20%
jillian 8/10 6070 days 20%
George Burgas 9/10 6075 days 21%
stain weedman 6/10 6081 days 15%
Sharon Curly 9/10 6083 days 21%
Peddy 7/10 6087 days 18%
Tim 5/10 6103 days 11%
Thomas Fillary 9/10 6119 days 21%
Sjoerd 8/10 6125 days 20%
Gemma Harling 9/10 6125 days 21%
Charlie Bond 9/10 6132 days 21%
Florencia Cortese 10/10 6193 days 21%
Meike Biel 7/10 6201 days 18%
Helen 9/10 6201 days 21%
Ellie 9/10 6213 days 21%
Daniel 7/10 6231 days 18%
Omer Harron 9/10 6231 days 21%
Yayami Kimura 10/10 6234 days 21%
Kieran Concarr 9/10 6234 days 21%
Christian 8/10 6238 days 20%
Kathrin 9/10 6242 days 21%
Andreas Brett 8/10 6244 days 20%
Kristine Clemmensen Rotne 7/10 6244 days 18%
helga 6/10 6245 days 15%
Emily Houston 10/10 6248 days 21%
Hannah Holmes 8/10 6251 days 20%
Lisa Tame 9/10 6252 days 21%
Kelly 9/10 6255 days 21%
Stephanie 10/10 6263 days 21%
Sayaka 7/10 6263 days 18%
Marc Hertogs 8/10 6267 days 20%
Tanya Berthoud 9/10 6269 days 21%
Van Hoof 8/10 6291 days 20%
Berger 8/10 6298 days 20%
Travis Brennan 9/10 6311 days 21%
Alexis 10/10 6325 days 21%
Martine Arsac 5/10 6333 days 11%
Frida 8/10 6335 days 20%
Ben 10/10 6336 days 21%
Wendy Williams 8/10 6343 days 20%
Charlie Wilson 10/10 6418 days 21%
Ian Coldrake 8/10 6418 days 20%
Jill Bourke 10/10 6423 days 21%
Andy Chapman 8/10 6453 days 20%
Shelley 10/10 6558 days 21%
Will 9/10 6567 days 21%
Michael 9/10 6569 days 21%
Sue 8/10 6569 days 20%
Stefan 8/10 6572 days 20%
Jenny 8/10 6575 days 20%
Kate 8/10 6577 days 20%
Paul Yacoumis 7/10 6579 days 18%
Kathryn 9/10 6584 days 21%
Celia 9/10 6586 days 21%
Annelte 4/10 6587 days 6%
IdanNakash 8/10 6587 days 20%
Martin Christina 9/10 6587 days 21%
Chris 8/10 6588 days 20%
Janneke 8/10 6588 days 20%
Sue Robertson 10/10 6590 days 21%
Fenke 7/10 6593 days 18%
Bas 7/10 6593 days 18%
Daniel 9/10 6595 days 21%
Susan 6/10 6601 days 15%
ErikVanDam 9/10 6607 days 21%
MariaNorman 9/10 6607 days 21%
MarcHarris 8/10 6607 days 20%
Helena 10/10 6607 days 21%
Sarah 10/10 6616 days 21%
beesom 8/10 6617 days 20%
Peter 5/10 6621 days 11%
Sonja 7/10 6628 days 18%
Leah 8/10 6629 days 20%
Sarah 10/10 6649 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

-3.61% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 62 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 -3.55%
198 -3.57%
199 -3.59%
200 -3.61%
201 -3.62%
202 -3.64%
203 -3.66%
… …

Balancing Adjustment

2.59% 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.