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Ranking Score Explained

Kia ora, 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 3219 days 100%
Jessica Freeland 10/10 3280 days 95%
Nanna Overbeck 10/10 3292 days 94%
Joe Rogers 9/10 3573 days 68%
Nicola Wiggan 9/10 3642 days 62%
Ben McDougal 10/10 3664 days 61%
Maria Schober 5/10 3951 days 26%
Helen Parsons 1/10 3959 days 12%
Elisa Felising 7/10 3959 days 32%
Claudia de Winter 9/10 4271 days 7%
Penny Lee 9/10 4273 days 7%
Jeroen Suijlang 8/10 4273 days 6%
Ludvig Fagerstrom 8/10 4347 days 0%
Marco Schmidt 10/10 4644 days 42%
Christian Schumacher 10/10 4644 days 42%
Jennifer Bramstad 8/10 4664 days 42%
Evelina Johansson 8/10 4664 days 42%
Sofia Anderson 10/10 4664 days 42%
Steve 5/10 4665 days 32%
Janine Kohlgrueler 9/10 4672 days 42%
Fraser Goldsmith 9/10 4689 days 42%
Nigel Leighton 10/10 4743 days 42%
Jonathan Vondette 7/10 4746 days 39%
Andreas and Christine and Nora Busch 10/10 4754 days 42%
lavonc 3/10 4785 days 22%
peterpiper 10/10 4969 days 42%
sandytemp22 10/10 4999 days 42%
Laura vanGool 10/10 5015 days 42%
Barbara Berkhout 7/10 5015 days 39%
Jurgen Joyce 8/10 5022 days 42%
Carole Carter 9/10 5022 days 42%
Sabrina Germany 9/10 5025 days 42%
J Jmal 10/10 5026 days 42%
Malena 10/10 5030 days 42%
Erik 10/10 5032 days 42%
Marion Hassink 8/10 5036 days 42%
Baas 8/10 5039 days 42%
Barbara 10/10 5040 days 42%
Rebecca Richardson 8/10 5041 days 42%
Andrew Powell 7/10 5041 days 39%
Andy Bridgman 8/10 5044 days 42%
Aoife Lillis 7/10 5047 days 39%
Rainer Schnell 8/10 5051 days 42%
Filsack 8/10 5051 days 42%
Hazel 10/10 5052 days 42%
Frank Waskikowski 9/10 5053 days 42%
Andreas Kristiansen 9/10 5053 days 42%
Robert MacLeod-Smith 8/10 5055 days 42%
Chris Marsh 6/10 5056 days 36%
Jessica Lane 7/10 5056 days 39%
Francis Corrigan 7/10 5060 days 39%
Laura Smith 9/10 5072 days 42%
Dean 8/10 5105 days 42%
Berry 10/10 5132 days 42%
Steve 9/10 5135 days 42%
MaggieYChaChi 9/10 5212 days 42%
GenH 9/10 5335 days 42%
Allison Meyoz 9/10 5341 days 42%
G Tulloch 9/10 5359 days 42%
Stephen Hunt 9/10 5361 days 42%
Thomas Klebensberger 10/10 5361 days 42%
Therea 10/10 5364 days 42%
Sean Brownell 7/10 5365 days 39%
Laura Thrower 10/10 5370 days 42%
David Taylor 9/10 5370 days 42%
Stefan Schmitz 8/10 5378 days 42%
Marii Joekalda 8/10 5379 days 42%
Frank & Ruth 6/10 5380 days 36%
Nathalie 10/10 5380 days 42%
Jo Meekley 7/10 5380 days 39%
Margit and Corein Groenevelt 8/10 5382 days 42%
Judith 9/10 5382 days 42%
Ven 8/10 5382 days 42%
Florian 8/10 5386 days 42%
Helen 9/10 5386 days 42%
Juliane Kleiu 10/10 5386 days 42%
Paula Dove 10/10 5386 days 42%
Erin 8/10 5387 days 42%
Walter Buschta 8/10 5387 days 42%
Wouter Moui 6/10 5388 days 36%
K Dahmer 8/10 5389 days 42%
Jonathan Cree 9/10 5389 days 42%
Laura Leigh 10/10 5389 days 42%
Ann-Kathrin Auditor 10/10 5390 days 42%
Katherine Forward 8/10 5390 days 42%
Chris Ashton 10/10 5390 days 42%
Jerry & Floon 7/10 5394 days 39%
Hadar Zevulun 9/10 5395 days 42%
Grumbach 9/10 5399 days 42%
Caroline Sheridan 9/10 5400 days 42%
Chris Darlington 10/10 5404 days 42%
Cheryl 10/10 5414 days 42%
Mark Aarts 9/10 5415 days 42%
Samuel Prechel 8/10 5416 days 42%
Dave and Lin Mungham 10/10 5417 days 42%
Gordon Daniels 8/10 5419 days 42%
Dr Dorthe Bossow 3/10 5420 days 22%
Helen Gilbertson 8/10 5423 days 42%
Doris Neuber 9/10 5423 days 42%
Ashleigh Buckley 8/10 5424 days 42%
PerspirationJournal 10/10 5516 days 42%
alku83 10/10 5516 days 42%
Mary Van 8/10 5577 days 42%
chloe1111 10/10 5700 days 42%
jenniferuk 9/10 5700 days 42%
Peter and Hilda 10/10 5730 days 42%
Einar 9/10 5749 days 42%
Inbar Yizhar Barnea 8/10 5749 days 42%
Tanya 9/10 5754 days 42%
Jana Steve 10/10 5755 days 42%
Yasmin Abrahams 7/10 5763 days 39%
Barbara & Sven 10/10 5763 days 42%
Judith 8/10 5767 days 42%
Henrik Hougs 8/10 5769 days 42%
Chris Glasg 9/10 5769 days 42%
Michael 10/10 5771 days 42%
Gary Ebrig 10/10 5774 days 42%
Mathias 9/10 5776 days 42%
Jamie 9/10 5781 days 42%
David Hobson 8/10 5781 days 42%
Christian 10/10 5781 days 42%
vanijzendoor 8/10 5784 days 42%
Dick Rosman 8/10 5785 days 42%
Frances Hay 8/10 5788 days 42%
Chance McGuire 10/10 5789 days 42%
Kevin and Teresa 8/10 5789 days 42%
Ben Miklozek 9/10 5789 days 42%
Marianne Lovdal 9/10 5789 days 42%
Jessica 5/10 5794 days 32%
S Luis Van Oler 6/10 5794 days 36%
sophiep 8/10 5835 days 42%
katharinatum 9/10 5835 days 42%
koellner 6/10 5849 days 36%
chrish1 9/10 5851 days 42%
Fred Findlay 7/10 5863 days 39%
maleta 9/10 5872 days 42%
Gemma Morris 10/10 5874 days 42%
TomL 10/10 5881 days 42%
Pauline Wan 7/10 5881 days 39%
eowyn2k 7/10 5881 days 39%
Suzanne 9/10 5912 days 42%
terryd 9/10 5973 days 42%
kindel 6/10 5977 days 36%
Emear Donnelly 10/10 6016 days 42%
zoed 7/10 6050 days 39%
steph_m 9/10 6065 days 42%
Charles Lyne 10/10 6065 days 42%
BenM1 7/10 6074 days 39%
KimC 8/10 6083 days 42%
JonK 8/10 6083 days 42%
TschaneK 10/10 6085 days 42%
RogerW 10/10 6087 days 42%
NicolaW 10/10 6087 days 42%
Lisa Duin 8/10 6093 days 42%
Joanna Harrnon 9/10 6094 days 42%
David 8/10 6095 days 42%
johnst 10/10 6095 days 42%
Adi 10/10 6095 days 42%
Sally477 9/10 6095 days 42%
Becca1 9/10 6097 days 42%
Jelle 8/10 6098 days 42%
Denys 8/10 6099 days 42%
Ronny 9/10 6099 days 42%
Viktoria Stoffel 10/10 6102 days 42%
Jon Li 9/10 6107 days 42%
Han Disveld 9/10 6107 days 42%
BevanLisa 10/10 6112 days 42%
SabineGermany 10/10 6113 days 42%
StefanGermany1 9/10 6113 days 42%
AnjaC 7/10 6113 days 39%
AnjaChrist 7/10 6113 days 39%
Torsten 9/10 6114 days 42%
MarcoJ 8/10 6115 days 42%
James O'Neil 10/10 6115 days 42%
Barry Smith 10/10 6115 days 42%
Siemens 8/10 6115 days 42%
AlexH 10/10 6116 days 42%
AnnickH 6/10 6117 days 36%
Rene 8/10 6118 days 42%
Dorothee 8/10 6118 days 42%
Rob 7/10 6118 days 39%
Mike 6/10 6119 days 36%
TammyH 9/10 6121 days 42%
Lynn White 7/10 6121 days 39%
Mette 8/10 6125 days 42%
Axel 5/10 6125 days 32%
amyd 8/10 6126 days 42%
Susan 9/10 6127 days 42%
lannie 5/10 6128 days 32%
XaviG 9/10 6129 days 42%
ChenM 8/10 6129 days 42%
Steven 9/10 6129 days 42%
CarleyJ 8/10 6129 days 42%
JesusB 7/10 6129 days 39%
GingerPrince 9/10 6129 days 42%
Steve 10/10 6129 days 42%
Claudia 9/10 6131 days 42%
Pascal 8/10 6131 days 42%
Karen 9/10 6134 days 42%
RandiL 7/10 6137 days 39%
IreneF 9/10 6138 days 42%
Rachel 8/10 6144 days 42%
Adi 10/10 6144 days 42%
Claire 8/10 6144 days 42%
Philippa 9/10 6145 days 42%
Conway 9/10 6145 days 42%
orianne 10/10 6151 days 42%
Caroline 7/10 6152 days 39%
Eike 9/10 6159 days 42%
Benni 7/10 6161 days 39%
John 6/10 6164 days 36%
Dan 9/10 6168 days 42%
Sally 9/10 6168 days 42%
Rosa 4/10 6168 days 27%
Sascha 7/10 6169 days 39%
Dassel 8/10 6169 days 42%
Eric 3/10 6170 days 22%
Charlie 9/10 6175 days 42%
tommfuller 7/10 6179 days 39%
Anouk 9/10 6207 days 42%
MissTraveller2009 10/10 6216 days 42%
David 9/10 6220 days 42%
Laura 9/10 6220 days 42%
Adam 8/10 6225 days 42%
mike brett 7/10 6228 days 39%
georgepearse 9/10 6266 days 42%
Aoife 8/10 6269 days 42%
Davina 8/10 6270 days 42%
Kath 10/10 6272 days 42%
Kate 8/10 6281 days 42%
Brenda 8/10 6281 days 42%
Amy 8/10 6290 days 42%
Katie 10/10 6290 days 42%
Christoffer 10/10 6292 days 42%
Rebecca 9/10 6292 days 42%
Suyin 10/10 6292 days 42%
Sarah 6/10 6301 days 36%
Michaela 9/10 6305 days 42%
Christopher 6/10 6305 days 36%
James 8/10 6305 days 42%
Sam Prior 8/10 6310 days 42%
jillian 8/10 6314 days 42%
George Burgas 9/10 6319 days 42%
stain weedman 6/10 6325 days 36%
Sharon Curly 9/10 6327 days 42%
Peddy 7/10 6331 days 39%
Tim 5/10 6347 days 32%
Thomas Fillary 9/10 6363 days 42%
Sjoerd 8/10 6369 days 42%
Gemma Harling 9/10 6369 days 42%
Charlie Bond 9/10 6376 days 42%
Florencia Cortese 10/10 6437 days 42%
Meike Biel 7/10 6445 days 39%
Helen 9/10 6445 days 42%
Ellie 9/10 6457 days 42%
Daniel 7/10 6475 days 39%
Omer Harron 9/10 6475 days 42%
Yayami Kimura 10/10 6478 days 42%
Kieran Concarr 9/10 6478 days 42%
Christian 8/10 6482 days 42%
Kathrin 9/10 6486 days 42%
Andreas Brett 8/10 6488 days 42%
Kristine Clemmensen Rotne 7/10 6488 days 39%
helga 6/10 6488 days 36%
Emily Houston 10/10 6492 days 42%
Hannah Holmes 8/10 6495 days 42%
Lisa Tame 9/10 6496 days 42%
Kelly 9/10 6499 days 42%
Stephanie 10/10 6507 days 42%
Sayaka 7/10 6507 days 39%
Marc Hertogs 8/10 6511 days 42%
Tanya Berthoud 9/10 6513 days 42%
Van Hoof 8/10 6535 days 42%
Berger 8/10 6542 days 42%
Travis Brennan 9/10 6554 days 42%
Alexis 10/10 6569 days 42%
Martine Arsac 5/10 6577 days 32%
Frida 8/10 6579 days 42%
Ben 10/10 6580 days 42%
Wendy Williams 8/10 6587 days 42%
Charlie Wilson 10/10 6662 days 42%
Ian Coldrake 8/10 6662 days 42%
Jill Bourke 10/10 6667 days 42%
Andy Chapman 8/10 6697 days 42%
Shelley 10/10 6802 days 42%
Will 9/10 6811 days 42%
Michael 9/10 6813 days 42%
Sue 8/10 6813 days 42%
Stefan 8/10 6816 days 42%
Jenny 8/10 6819 days 42%
Kate 8/10 6821 days 42%
Paul Yacoumis 7/10 6823 days 39%
Kathryn 9/10 6828 days 42%
Celia 9/10 6830 days 42%
Annelte 4/10 6831 days 27%
IdanNakash 8/10 6831 days 42%
Martin Christina 9/10 6831 days 42%
Chris 8/10 6832 days 42%
Janneke 8/10 6832 days 42%
Sue Robertson 10/10 6834 days 42%
Fenke 7/10 6837 days 39%
Bas 7/10 6837 days 39%
Daniel 9/10 6839 days 42%
Susan 6/10 6845 days 36%
ErikVanDam 9/10 6851 days 42%
MariaNorman 9/10 6851 days 42%
MarcHarris 8/10 6851 days 42%
Helena 10/10 6851 days 42%
Sarah 10/10 6860 days 42%
beesom 8/10 6861 days 42%
Peter 5/10 6865 days 32%
Sonja 7/10 6872 days 39%
Leah 8/10 6873 days 42%
Sarah 10/10 6893 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.