Ranking Score Explained

Hi there, 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 Fox Glacier Guiding.

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.

Nick Morrison's avatar

Nick Morrison

Rankers owner

Fox Glacier Guiding

Valid Reviews

211 Valid Reviews

The Fox Glacier Guiding experience has a total of 211 valid reviews. There are no 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 211 valid reviews:

Rating Count Percentage
10/10 70
33%
9/10 52
25%
8/10 54
26%
7/10 18
9%
6/10 7
3%
5/10 3
1%
4/10 6
3%
3/10 0
0%
2/10 0
0%
1/10 1
0%

85.69% Average

The raw data average (mean) for all the Fox Glacier Guiding valid reviews is 85.69% and is based on 211 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

185 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 211 valid reviews, the experience has 185 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 185 face-to-face reviews:

Rating Count Percentage
10/10 57
31%
9/10 47
25%
8/10 51
28%
7/10 17
9%
6/10 7
4%
5/10 2
1%
4/10 4
2%
3/10 0
0%
2/10 0
0%
1/10 0
0%

85.84% Average

The raw data average (mean) for all the Fox Glacier Guiding face-to-face reviews is 85.84% and is based on 185 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

86.82%

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 Face-to-Face Weight Relative Weight
Mona Uttendorf 10/10 727 days true 31.75 100%
Sebastian Braun 10/10 732 days true 31.06 98%
Tanya Davies 10/10 781 days 20.62 64%
Danielle Stam 7/10 1035 days true 6.68 19%
Carmen 10/10 1351 days true 5.58 16%
Claudia Hillebrand 4/10 1699 days true 4.72 13%
Max Backelandt 9/10 1705 days true 5.0 14%
Marie Toulemonde 10/10 1705 days true 5.0 14%
Mark 7/10 1708 days true 4.99 14%
Daniel Robledo 8/10 1727 days true 4.96 14%
Maria Camen Santos Lopez 9/10 1727 days true 4.96 14%
Mara 9/10 1728 days true 4.96 14%
Andrea Morello 7/10 1728 days true 4.96 14%
Maria = Moller Hansen 9/10 1737 days true 4.94 14%
Simon Tanguy 9/10 1745 days true 4.93 14%
Gassat 4/10 1748 days true 4.64 13%
Lena Jensen 9/10 1761 days true 4.91 13%
Jesper Andersen 9/10 1761 days true 4.91 13%
Claire Lieval 9/10 1773 days true 4.89 13%
Pioter Jurkowski 7/10 1785 days 4.05 11%
Jesse Farrell 8/10 1794 days true 4.85 13%
Philipp Haass 6/10 1794 days true 4.85 13%
Chantal 10/10 1798 days true 4.84 13%
Ken S 10/10 1816 days 4.01 11%
Ron Stenhouse 6/10 2060 days true 4.41 12%
Elizabeth Stenhouse 8/10 2060 days true 4.41 12%
Andreas Jarvel 9/10 2074 days true 4.39 12%
Pete Wilson 4/10 2077 days true 4.13 11%
Marcel 7/10 2084 days true 4.37 12%
Maria 8/10 2084 days true 4.37 12%
Clare Cannon 8/10 2101 days true 4.35 12%
Sara Omary 9/10 2101 days true 4.35 12%
S M 10/10 2119 days 3.6 9%
Alison Langley 8/10 2163 days true 4.24 11%
Liam Day 9/10 2167 days true 4.24 11%
Martyn Kool 8/10 2167 days true 4.24 11%
Michael Kretzschmar 9/10 2167 days true 4.24 11%
Marieke 9/10 2167 days true 4.24 11%
Kevin Desjandino 10/10 2168 days true 4.24 11%
Sharon Yates 10/10 2169 days true 4.23 11%
Frans Derks 8/10 2174 days true 4.23 11%
Alexandra van den Brack 8/10 2178 days true 4.22 11%
Frank and Suzanne 8/10 2181 days true 4.21 11%
Erik Funk 8/10 2188 days true 4.2 11%
tanyap 4/10 2211 days 3.23 8%
Rob Klauer 8/10 2444 days true 3.78 10%
Petr Stepanek 7/10 2448 days true 3.78 10%
Alan Brady 9/10 2453 days true 3.77 10%
sidcupjon 9/10 2456 days 3.14 8%
Robert & Bridget Holden 8/10 2465 days true 3.75 10%
Vincent & Lian 9/10 2466 days true 3.75 10%
Stam 9/10 2467 days true 3.74 10%
Tim & Judith 8/10 2468 days true 3.74 10%
Rob Gill 10/10 2469 days true 3.74 10%
Cindy & Glen Kerunsky 10/10 2472 days true 3.74 10%
R Seiferling 10/10 2477 days true 3.73 10%
Ursi Meier 9/10 2479 days true 3.72 10%
Thomas Krause 8/10 2479 days true 3.72 10%
Hugo ten Brink 8/10 2483 days true 3.72 10%
kiwifrenchy 10/10 2485 days 3.1 8%
Katja Klein 9/10 2530 days true 3.64 9%
Judith 8/10 2536 days true 3.63 9%
damaca 10/10 2577 days 2.97 7%
KarenW 10/10 2638 days 2.89 7%
neilqecosse 9/10 2638 days 2.89 7%
MeganJane_85 1/10 2761 days 2.31 5%
Marcus 9/10 2781 days true 3.23 8%
Lisa Milton 10/10 2784 days true 3.22 8%
Ken Talan 10/10 2787 days true 3.22 8%
Alita Smith 9/10 2794 days true 3.21 8%
Leroy Dimitri 10/10 2804 days true 3.19 8%
Mr & Mrs Palmer 9/10 2808 days true 3.18 8%
Sayaka 10/10 2808 days true 3.18 8%
Stoop 8/10 2808 days true 3.18 8%
Jacob 9/10 2809 days true 3.18 8%
Maike 9/10 2810 days true 3.18 8%
Kauzta 10/10 2810 days true 3.18 8%
Laura Malins 8/10 2812 days true 3.18 8%
K & J Overton 8/10 2816 days true 3.17 8%
Betten 10/10 2821 days true 3.16 8%
taniadeanryanbrittany 8/10 2822 days 2.63 6%
Nicolas 7/10 2823 days true 3.16 8%
Lenore Dejong 9/10 2824 days true 3.16 8%
Manu & Gabi 10/10 2827 days true 3.15 8%
Laura Hayes 10/10 2837 days true 3.14 8%
Maite Severins 7/10 2841 days true 3.13 8%
Helen Keighley 10/10 2842 days true 3.13 8%
Ryan Tull 10/10 2845 days true 3.12 8%
Calvin Parsons 8/10 2850 days true 3.12 8%
Christian Foerster 7/10 2850 days true 3.12 8%
Kristie 10/10 2873 days true 3.08 8%
elpo 9/10 3095 days 2.26 5%
Baumgarten 8/10 3123 days true 2.67 6%
Stephen M 7/10 3168 days true 2.59 6%
Corine van Been 8/10 3169 days true 2.59 6%
s_butler 10/10 3175 days true 2.58 6%
Benedict Fluthman 6/10 3177 days true 2.58 6%
Peter Schmidt 5/10 3187 days 2.13 5%
Nicky and Andy Prescott 10/10 3189 days true 2.56 6%
Jackie 9/10 3206 days true 2.53 6%
Vincente Garrido 8/10 3210 days true 2.52 6%
Keith Wilde 10/10 3210 days true 2.52 6%
Ian E 8/10 3211 days true 2.52 6%
kate 5/10 3212 days true 2.52 6%
Rob 8/10 3213 days true 2.52 6%
emily walters 10/10 3215 days 2.1 4%
Peter Ortner 9/10 3224 days true 2.5 6%
Nigel Armstrong 10/10 3226 days true 2.5 6%
Grainne Ahern 4/10 3246 days 1.91 4%
Chidlebyte 10/10 3246 days 2.05 4%
gabei 7/10 3261 days true 2.44 6%
mariak 7/10 3263 days true 2.44 6%
marijad 10/10 3265 days true 2.43 5%
Paul Nugent 8/10 3277 days 2.01 4%
Misha 10/10 3277 days 2.01 4%
Alan Riley 8/10 3289 days true 2.39 5%
Ann Riley 8/10 3289 days true 2.39 5%
Eimear Doyle 9/10 3289 days true 2.39 5%
MV Vroenhoven 10/10 3292 days true 2.39 5%
Sara Reekmans 9/10 3300 days true 2.38 5%
Emily and Alex 9/10 3304 days true 2.37 5%
neilchelt 10/10 3307 days 1.97 4%
jank 10/10 3368 days true 2.26 5%
alanvn 9/10 3390 days true 2.23 5%
bogaard 10/10 3403 days true 2.21 5%
lorah 10/10 3411 days true 2.19 5%
joevw 9/10 3476 days true 2.09 4%
OliverG1 8/10 3509 days true 2.03 4%
Tim_P 6/10 3518 days true 2.02 4%
Nathalie 8/10 3518 days true 2.02 4%
Sofie 9/10 3521 days 1.68 3%
ElissaH 10/10 3524 days true 2.01 4%
KjellR 9/10 3524 days true 2.01 4%
BonnieH 9/10 3524 days true 2.01 4%
CharityW 8/10 3524 days true 2.01 4%
Paul 10/10 3525 days true 2.01 4%
eskim1018 9/10 3533 days 1.66 3%
ChrisD 10/10 3537 days true 1.99 4%
Christian Moll 9/10 3537 days true 1.99 4%
david 10/10 3538 days true 1.98 4%
Doll 10/10 3545 days true 1.97 4%
A 10/10 3553 days true 1.96 4%
Tolsten 10/10 3553 days true 1.96 4%
GaryW 8/10 3556 days true 1.95 4%
ElizabethF 9/10 3556 days true 1.95 4%
Claudia 4/10 3558 days true 1.84 4%
Jason 7/10 3561 days true 1.95 4%
John 8/10 3563 days true 1.94 4%
Hans 8/10 3570 days true 1.93 4%
Carly 7/10 3572 days true 1.93 4%
Jeffrey C 10/10 3580 days 1.6 3%
SueB 10/10 3580 days true 1.92 4%
Dalit 10/10 3587 days true 1.9 4%
Jon 10/10 3593 days true 1.89 4%
Kathrin 9/10 3594 days true 1.89 4%
Oliver 8/10 3596 days true 1.89 4%
Patrick 8/10 3598 days true 1.89 4%
Andrew 8/10 3598 days true 1.89 4%
Graham 6/10 3607 days true 1.87 4%
Maria 10/10 3634 days true 1.83 4%
Jordi 6/10 3642 days true 1.81 4%
nicole 10/10 3644 days 1.51 3%
Rowan 9/10 3667 days true 1.77 3%
abby 9/10 3678 days true 1.75 3%
Andrew 9/10 3689 days true 1.74 3%
Anna 10/10 3719 days true 1.69 3%
Atsuko 8/10 3728 days true 1.67 3%
Trina 10/10 3746 days true 1.64 3%
Terri Scott 10/10 3757 days true 1.62 3%
Brian 10/10 3770 days true 1.6 3%
Wolfgang 8/10 3794 days true 1.56 3%
Gorka Rojas 9/10 3794 days true 1.56 3%
Ashlee Roberts 10/10 3818 days 1.27 2%
Corin Kraft 10/10 3863 days true 1.45 2%
Anke 9/10 3871 days true 1.44 2%
Olga 7/10 3887 days true 1.41 2%
Ben 8/10 3892 days true 1.4 2%
Chris 7/10 3898 days true 1.39 2%
Elizabeth Woodruff 5/10 3901 days true 1.39 2%
Sandra Verbaarschot 10/10 3901 days true 1.39 2%
Denise 10/10 3904 days true 1.38 2%
Lisa Jones 10/10 3908 days true 1.38 2%
Richard Anthony 8/10 3908 days true 1.38 2%
Renske Tehurne 8/10 3912 days true 1.37 2%
Robert 10/10 3913 days true 1.37 2%
Elise 10/10 3913 days true 1.37 2%
Fung 10/10 3913 days true 1.37 2%
Omri Hasson 9/10 3918 days true 1.36 2%
Aharon 10/10 3919 days true 1.36 2%
Sue 8/10 3925 days true 1.35 2%
Ondrej Kacena 8/10 3932 days true 1.34 2%
Laurie 8/10 3932 days true 1.34 2%
Eric P 10/10 3940 days true 1.32 2%
Alex 8/10 3949 days true 1.31 2%
Natalie 10/10 3961 days true 1.29 2%
Paul Cowie 7/10 3996 days true 1.23 2%
Ard 8/10 3996 days true 1.23 2%
Gabriel Faber 8/10 3996 days true 1.23 2%
Michael 8/10 4006 days true 1.21 2%
purplekat99 8/10 4008 days 1.01 1%
Wendy Williams 9/10 4013 days true 1.2 2%
MrsWesley 6/10 4248 days true 0.82 0%
John 7/10 4254 days true 0.81 0%
Heike 9/10 4261 days true 0.8 0%
Colin Sinclair 10/10 4262 days true 0.79 0%
Angela Shearer 8/10 4262 days true 0.79 0%
Loic 9/10 4286 days true 0.75 0%
Reggie 9/10 4287 days true 0.75 0%
FluerBlum 8/10 4299 days true 0.73 0%
Hermann 10/10 4300 days true 0.73 0%
Franz-Josef 9/10 4303 days true 0.73 0%

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 Fox Glacier Guiding experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-7.28% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Fox Glacier Guiding 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 364 days.

The Fox Glacier Guiding experience has been adjusted for 364 days. Adjustments are according to the following table.

Days Adjustment
361 -7.22%
362 -7.24%
363 -7.26%
364 -7.28%
365 -7.30%
366 -7.32%
367 -7.34%

Final Ranking Score

80%

The final ranking score once adjustments and rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.

If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.