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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

85.08%

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 2837 days 100%
Jessica Freeland 10/10 2898 days 96%
Nanna Overbeck 10/10 2910 days 95%
Joe Rogers 9/10 3191 days 76%
Nicola Wiggan 9/10 3260 days 72%
Ben McDougal 10/10 3282 days 71%
Maria Schober 5/10 3569 days 40%
Helen Parsons 1/10 3577 days 21%
Elisa Felising 7/10 3577 days 48%
Claudia de Winter 9/10 3889 days 31%
Penny Lee 9/10 3891 days 31%
Jeroen Suijlang 8/10 3891 days 31%
Ludvig Fagerstrom 8/10 3965 days 26%
Marco Schmidt 10/10 4262 days 7%
Christian Schumacher 10/10 4262 days 7%
Jennifer Bramstad 8/10 4282 days 6%
Evelina Johansson 8/10 4282 days 6%
Sofia Anderson 10/10 4282 days 6%
Steve 5/10 4283 days 4%
Janine Kohlgrueler 9/10 4290 days 5%
Fraser Goldsmith 9/10 4307 days 4%
Nigel Leighton 10/10 4361 days 1%
Jonathan Vondette 7/10 4364 days 0%
Andreas and Christine and Nora Busch 10/10 4372 days 0%
lavonc 3/10 4403 days 18%
peterpiper 10/10 4587 days 33%
sandytemp22 10/10 4617 days 33%
Laura vanGool 10/10 4633 days 33%
Barbara Berkhout 7/10 4633 days 30%
Jurgen Joyce 8/10 4640 days 32%
Carole Carter 9/10 4640 days 32%
Sabrina Germany 9/10 4643 days 32%
J Jmal 10/10 4644 days 33%
Malena 10/10 4648 days 33%
Erik 10/10 4650 days 33%
Marion Hassink 8/10 4654 days 32%
Baas 8/10 4657 days 32%
Barbara 10/10 4658 days 33%
Rebecca Richardson 8/10 4659 days 32%
Andrew Powell 7/10 4659 days 30%
Andy Bridgman 8/10 4662 days 32%
Aoife Lillis 7/10 4665 days 30%
Rainer Schnell 8/10 4669 days 32%
Filsack 8/10 4669 days 32%
Hazel 10/10 4670 days 33%
Frank Waskikowski 9/10 4671 days 32%
Andreas Kristiansen 9/10 4671 days 32%
Robert MacLeod-Smith 8/10 4673 days 32%
Chris Marsh 6/10 4674 days 28%
Jessica Lane 7/10 4674 days 30%
Francis Corrigan 7/10 4678 days 30%
Laura Smith 9/10 4690 days 32%
Dean 8/10 4723 days 32%
Berry 10/10 4750 days 33%
Steve 9/10 4753 days 32%
MaggieYChaChi 9/10 4830 days 32%
GenH 9/10 4953 days 32%
Allison Meyoz 9/10 4959 days 32%
G Tulloch 9/10 4977 days 32%
Stephen Hunt 9/10 4979 days 32%
Thomas Klebensberger 10/10 4979 days 33%
Therea 10/10 4982 days 33%
Sean Brownell 7/10 4983 days 30%
Laura Thrower 10/10 4988 days 33%
David Taylor 9/10 4988 days 32%
Stefan Schmitz 8/10 4996 days 32%
Marii Joekalda 8/10 4997 days 32%
Frank & Ruth 6/10 4998 days 28%
Nathalie 10/10 4998 days 33%
Jo Meekley 7/10 4998 days 30%
Margit and Corein Groenevelt 8/10 5000 days 32%
Judith 9/10 5000 days 32%
Ven 8/10 5000 days 32%
Florian 8/10 5004 days 32%
Helen 9/10 5004 days 32%
Juliane Kleiu 10/10 5004 days 33%
Paula Dove 10/10 5004 days 33%
Erin 8/10 5005 days 32%
Walter Buschta 8/10 5005 days 32%
Wouter Moui 6/10 5006 days 28%
K Dahmer 8/10 5007 days 32%
Jonathan Cree 9/10 5007 days 32%
Laura Leigh 10/10 5007 days 33%
Ann-Kathrin Auditor 10/10 5008 days 33%
Katherine Forward 8/10 5008 days 32%
Chris Ashton 10/10 5008 days 33%
Jerry & Floon 7/10 5012 days 30%
Hadar Zevulun 9/10 5013 days 32%
Grumbach 9/10 5017 days 32%
Caroline Sheridan 9/10 5018 days 32%
Chris Darlington 10/10 5022 days 33%
Cheryl 10/10 5032 days 33%
Mark Aarts 9/10 5033 days 32%
Samuel Prechel 8/10 5034 days 32%
Dave and Lin Mungham 10/10 5035 days 33%
Gordon Daniels 8/10 5037 days 32%
Dr Dorthe Bossow 3/10 5038 days 18%
Helen Gilbertson 8/10 5041 days 32%
Doris Neuber 9/10 5041 days 32%
Ashleigh Buckley 8/10 5042 days 32%
PerspirationJournal 10/10 5134 days 33%
alku83 10/10 5134 days 33%
Mary Van 8/10 5195 days 32%
chloe1111 10/10 5318 days 33%
jenniferuk 9/10 5318 days 32%
Peter and Hilda 10/10 5348 days 33%
Einar 9/10 5367 days 32%
Inbar Yizhar Barnea 8/10 5367 days 32%
Tanya 9/10 5372 days 32%
Jana Steve 10/10 5373 days 33%
Yasmin Abrahams 7/10 5381 days 30%
Barbara & Sven 10/10 5381 days 33%
Judith 8/10 5385 days 32%
Henrik Hougs 8/10 5387 days 32%
Chris Glasg 9/10 5387 days 32%
Michael 10/10 5389 days 33%
Gary Ebrig 10/10 5392 days 33%
Mathias 9/10 5394 days 32%
Jamie 9/10 5399 days 32%
David Hobson 8/10 5399 days 32%
Christian 10/10 5399 days 33%
vanijzendoor 8/10 5402 days 32%
Dick Rosman 8/10 5403 days 32%
Frances Hay 8/10 5406 days 32%
Chance McGuire 10/10 5407 days 33%
Kevin and Teresa 8/10 5407 days 32%
Ben Miklozek 9/10 5407 days 32%
Marianne Lovdal 9/10 5407 days 32%
Jessica 5/10 5412 days 25%
S Luis Van Oler 6/10 5412 days 28%
sophiep 8/10 5453 days 32%
katharinatum 9/10 5453 days 32%
koellner 6/10 5467 days 28%
chrish1 9/10 5469 days 32%
Fred Findlay 7/10 5481 days 30%
maleta 9/10 5490 days 32%
Gemma Morris 10/10 5492 days 33%
TomL 10/10 5499 days 33%
Pauline Wan 7/10 5499 days 30%
eowyn2k 7/10 5499 days 30%
Suzanne 9/10 5530 days 32%
terryd 9/10 5591 days 32%
kindel 6/10 5595 days 28%
Emear Donnelly 10/10 5634 days 33%
zoed 7/10 5668 days 30%
steph_m 9/10 5683 days 32%
Charles Lyne 10/10 5683 days 33%
BenM1 7/10 5692 days 30%
KimC 8/10 5701 days 32%
JonK 8/10 5701 days 32%
TschaneK 10/10 5703 days 33%
RogerW 10/10 5705 days 33%
NicolaW 10/10 5705 days 33%
Lisa Duin 8/10 5711 days 32%
Joanna Harrnon 9/10 5712 days 32%
David 8/10 5713 days 32%
johnst 10/10 5713 days 33%
Adi 10/10 5714 days 33%
Sally477 9/10 5714 days 32%
Becca1 9/10 5715 days 32%
Jelle 8/10 5716 days 32%
Denys 8/10 5718 days 32%
Ronny 9/10 5718 days 32%
Viktoria Stoffel 10/10 5720 days 33%
Jon Li 9/10 5725 days 32%
Han Disveld 9/10 5725 days 32%
BevanLisa 10/10 5730 days 33%
SabineGermany 10/10 5731 days 33%
StefanGermany1 9/10 5731 days 32%
AnjaC 7/10 5731 days 30%
AnjaChrist 7/10 5731 days 30%
Torsten 9/10 5733 days 32%
MarcoJ 8/10 5733 days 32%
James O'Neil 10/10 5733 days 33%
Barry Smith 10/10 5733 days 33%
Siemens 8/10 5733 days 32%
AlexH 10/10 5734 days 33%
AnnickH 6/10 5735 days 28%
Rene 8/10 5737 days 32%
Dorothee 8/10 5737 days 32%
Rob 7/10 5737 days 30%
Mike 6/10 5738 days 28%
TammyH 9/10 5739 days 32%
Lynn White 7/10 5740 days 30%
Mette 8/10 5744 days 32%
Axel 5/10 5744 days 25%
amyd 8/10 5744 days 32%
Susan 9/10 5746 days 32%
lannie 5/10 5747 days 25%
XaviG 9/10 5747 days 32%
ChenM 8/10 5747 days 32%
Steven 9/10 5747 days 32%
CarleyJ 8/10 5747 days 32%
JesusB 7/10 5747 days 30%
GingerPrince 9/10 5747 days 32%
Steve 10/10 5747 days 33%
Claudia 9/10 5750 days 32%
Pascal 8/10 5750 days 32%
Karen 9/10 5753 days 32%
RandiL 7/10 5755 days 30%
IreneF 9/10 5756 days 32%
Rachel 8/10 5763 days 32%
Adi 10/10 5763 days 33%
Claire 8/10 5763 days 32%
Philippa 9/10 5764 days 32%
Conway 9/10 5764 days 32%
orianne 10/10 5770 days 33%
Caroline 7/10 5771 days 30%
Eike 9/10 5778 days 32%
Benni 7/10 5780 days 30%
John 6/10 5783 days 28%
Dan 9/10 5787 days 32%
Sally 9/10 5787 days 32%
Rosa 4/10 5787 days 21%
Sascha 7/10 5788 days 30%
Dassel 8/10 5788 days 32%
Eric 3/10 5789 days 18%
Charlie 9/10 5794 days 32%
tommfuller 7/10 5798 days 30%
Anouk 9/10 5826 days 32%
MissTraveller2009 10/10 5834 days 33%
David 9/10 5839 days 32%
Laura 9/10 5839 days 32%
Adam 8/10 5844 days 32%
mike brett 7/10 5847 days 30%
georgepearse 9/10 5885 days 32%
Aoife 8/10 5888 days 32%
Davina 8/10 5889 days 32%
Kath 10/10 5891 days 33%
Kate 8/10 5900 days 32%
Brenda 8/10 5900 days 32%
Amy 8/10 5909 days 32%
Katie 10/10 5909 days 33%
Christoffer 10/10 5911 days 33%
Rebecca 9/10 5911 days 32%
Suyin 10/10 5911 days 33%
Sarah 6/10 5920 days 28%
Michaela 9/10 5924 days 32%
Christopher 6/10 5924 days 28%
James 8/10 5924 days 32%
Sam Prior 8/10 5929 days 32%
jillian 8/10 5933 days 32%
George Burgas 9/10 5938 days 32%
stain weedman 6/10 5944 days 28%
Sharon Curly 9/10 5946 days 32%
Peddy 7/10 5950 days 30%
Tim 5/10 5966 days 25%
Thomas Fillary 9/10 5982 days 32%
Sjoerd 8/10 5988 days 32%
Gemma Harling 9/10 5988 days 32%
Charlie Bond 9/10 5995 days 32%
Florencia Cortese 10/10 6055 days 33%
Meike Biel 7/10 6063 days 30%
Helen 9/10 6063 days 32%
Ellie 9/10 6076 days 32%
Daniel 7/10 6093 days 30%
Omer Harron 9/10 6093 days 32%
Yayami Kimura 10/10 6096 days 33%
Kieran Concarr 9/10 6096 days 32%
Christian 8/10 6100 days 32%
Kathrin 9/10 6104 days 32%
Andreas Brett 8/10 6106 days 32%
Kristine Clemmensen Rotne 7/10 6106 days 30%
helga 6/10 6107 days 28%
Emily Houston 10/10 6110 days 33%
Hannah Holmes 8/10 6113 days 32%
Lisa Tame 9/10 6114 days 32%
Kelly 9/10 6117 days 32%
Stephanie 10/10 6125 days 33%
Sayaka 7/10 6125 days 30%
Marc Hertogs 8/10 6129 days 32%
Tanya Berthoud 9/10 6131 days 32%
Van Hoof 8/10 6153 days 32%
Berger 8/10 6160 days 32%
Travis Brennan 9/10 6173 days 32%
Alexis 10/10 6187 days 33%
Martine Arsac 5/10 6195 days 25%
Frida 8/10 6197 days 32%
Ben 10/10 6198 days 33%
Wendy Williams 8/10 6205 days 32%
Charlie Wilson 10/10 6280 days 33%
Ian Coldrake 8/10 6280 days 32%
Jill Bourke 10/10 6285 days 33%
Andy Chapman 8/10 6315 days 32%
Shelley 10/10 6420 days 33%
Will 9/10 6429 days 32%
Michael 9/10 6431 days 32%
Sue 8/10 6431 days 32%
Stefan 8/10 6434 days 32%
Jenny 8/10 6437 days 32%
Kate 8/10 6439 days 32%
Paul Yacoumis 7/10 6441 days 30%
Kathryn 9/10 6446 days 32%
Celia 9/10 6448 days 32%
Annelte 4/10 6449 days 21%
IdanNakash 8/10 6449 days 32%
Martin Christina 9/10 6449 days 32%
Chris 8/10 6450 days 32%
Janneke 8/10 6450 days 32%
Sue Robertson 10/10 6452 days 33%
Fenke 7/10 6455 days 30%
Bas 7/10 6455 days 30%
Daniel 9/10 6457 days 32%
Susan 6/10 6463 days 28%
ErikVanDam 9/10 6469 days 32%
MariaNorman 9/10 6469 days 32%
MarcHarris 8/10 6469 days 32%
Helena 10/10 6469 days 33%
Sarah 10/10 6478 days 33%
beesom 8/10 6479 days 32%
Peter 5/10 6483 days 25%
Sonja 7/10 6490 days 30%
Leah 8/10 6491 days 32%
Sarah 10/10 6511 days 33%

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

-4.05% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 43 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 -3.99%
198 -4.01%
199 -4.03%
200 -4.05%
201 -4.07%
202 -4.09%
203 -4.11%
… …

Balancing Adjustment

2.72% 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.