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

85.23%

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 1191 days true 4.81 100%
Sebastian Braun 10/10 1196 days true 4.8 100%
Tanya Davies 10/10 1244 days 4.71 98%
Danielle Stam 7/10 1499 days true 3.83 80%
Carmen 10/10 1815 days true 3.59 75%
Claudia Hillebrand 4/10 2163 days true 2.3 48%
Max Backelandt 9/10 2169 days true 2.9 60%
Marie Toulemonde 10/10 2169 days true 2.9 60%
Mark 7/10 2172 days true 2.63 55%
Daniel Robledo 8/10 2191 days true 2.71 56%
Maria Camen Santos Lopez 9/10 2191 days true 2.86 59%
Mara 9/10 2192 days true 2.85 59%
Andrea Morello 7/10 2192 days true 2.6 54%
Maria = Moller Hansen 9/10 2201 days true 2.84 59%
Simon Tanguy 9/10 2209 days true 2.82 59%
Gassat 4/10 2212 days true 2.22 46%
Lena Jensen 9/10 2225 days true 2.79 58%
Jesper Andersen 9/10 2225 days true 2.79 58%
Claire Lieval 9/10 2237 days true 2.77 57%
Pioter Jurkowski 7/10 2249 days 2.49 52%
Jesse Farrell 8/10 2258 days true 2.59 54%
Philipp Haass 6/10 2258 days true 2.26 47%
Chantal 10/10 2262 days true 2.72 56%
Ken S 10/10 2280 days 2.68 56%
Ron Stenhouse 6/10 2524 days true 1.83 38%
Elizabeth Stenhouse 8/10 2524 days true 2.09 44%
Andreas Jarvel 9/10 2538 days true 2.18 45%
Pete Wilson 4/10 2541 days true 1.71 36%
Marcel 7/10 2548 days true 1.96 41%
Maria 8/10 2548 days true 2.05 43%
Clare Cannon 8/10 2565 days true 2.02 42%
Sara Omary 9/10 2565 days true 2.12 44%
S M 10/10 2583 days 2.09 43%
Alison Langley 8/10 2627 days true 1.9 40%
Liam Day 9/10 2631 days true 1.99 41%
Martyn Kool 8/10 2631 days true 1.89 39%
Michael Kretzschmar 9/10 2631 days true 1.99 41%
Marieke 9/10 2631 days true 1.99 41%
Kevin Desjandino 10/10 2632 days true 1.99 41%
Sharon Yates 10/10 2633 days true 1.99 41%
Frans Derks 8/10 2638 days true 1.88 39%
Alexandra van den Brack 8/10 2642 days true 1.87 39%
Frank and Suzanne 8/10 2645 days true 1.87 39%
Erik Funk 8/10 2652 days true 1.86 39%
tanyap 4/10 2675 days 1.51 31%
Rob Klauer 8/10 2908 days true 1.38 29%
Petr Stepanek 7/10 2912 days true 1.31 27%
Alan Brady 9/10 2917 days true 1.43 30%
sidcupjon 9/10 2920 days 1.43 30%
Robert & Bridget Holden 8/10 2929 days true 1.34 28%
Vincent & Lian 9/10 2930 days true 1.41 29%
Stam 9/10 2931 days true 1.41 29%
Tim & Judith 8/10 2932 days true 1.33 28%
Rob Gill 10/10 2933 days true 1.4 29%
Cindy & Glen Kerunsky 10/10 2936 days true 1.4 29%
R Seiferling 10/10 2941 days true 1.39 29%
Ursi Meier 9/10 2943 days true 1.38 29%
Thomas Krause 8/10 2943 days true 1.31 27%
Hugo ten Brink 8/10 2947 days true 1.31 27%
kiwifrenchy 10/10 2949 days 1.37 29%
Katja Klein 9/10 2994 days true 1.28 27%
Judith 8/10 3000 days true 1.21 25%
damaca 10/10 3041 days 1.19 25%
KarenW 10/10 3102 days 1.07 22%
neilqecosse 9/10 3102 days 1.07 22%
MeganJane_85 1/10 3225 days 0.61 13%
Marcus 9/10 3245 days true 0.79 16%
Lisa Milton 10/10 3248 days true 0.79 16%
Ken Talan 10/10 3251 days true 0.78 16%
Alita Smith 9/10 3258 days true 0.77 16%
Leroy Dimitri 10/10 3268 days true 0.75 16%
Mr & Mrs Palmer 9/10 3272 days true 0.74 15%
Sayaka 10/10 3272 days true 0.74 15%
Stoop 8/10 3272 days true 0.7 15%
Jacob 9/10 3273 days true 0.74 15%
Maike 9/10 3274 days true 0.74 15%
Kauzta 10/10 3274 days true 0.74 15%
Laura Malins 8/10 3276 days true 0.7 14%
K & J Overton 8/10 3280 days true 0.69 14%
Betten 10/10 3285 days true 0.71 15%
taniadeanryanbrittany 8/10 3286 days 0.68 14%
Nicolas 7/10 3287 days true 0.65 13%
Lenore Dejong 9/10 3288 days true 0.71 15%
Manu & Gabi 10/10 3291 days true 0.7 15%
Laura Hayes 10/10 3301 days true 0.68 14%
Maite Severins 7/10 3305 days true 0.61 13%
Helen Keighley 10/10 3306 days true 0.67 14%
Ryan Tull 10/10 3309 days true 0.67 14%
Calvin Parsons 8/10 3314 days true 0.62 13%
Christian Foerster 7/10 3314 days true 0.6 12%
Kristie 10/10 3337 days true 0.61 13%
elpo 9/10 3559 days 0.18 4%
Baumgarten 8/10 3587 days true 0.12 2%
Stephen M 7/10 3632 days true 0.03 1%
Corine van Been 8/10 3633 days true 0.03 1%
s_butler 10/10 3639 days true 0.02 0%
Benedict Fluthman 6/10 3641 days true 0.01 0%
Peter Schmidt 5/10 3651 days 0.0 0%
Nicky and Andy Prescott 10/10 3653 days true 0.0 0%
Jackie 9/10 3670 days true 0.0 0%
Vincente Garrido 8/10 3674 days true 0.0 0%
Keith Wilde 10/10 3674 days true 0.0 0%
Ian E 8/10 3675 days true 0.0 0%
kate 5/10 3676 days true 0.0 0%
Rob 8/10 3677 days true 0.0 0%
emily walters 10/10 3679 days 0.0 0%
Peter Ortner 9/10 3688 days true 0.0 0%
Nigel Armstrong 10/10 3690 days true 0.0 0%
Grainne Ahern 4/10 3710 days 0.0 0%
Chidlebyte 10/10 3710 days 0.0 0%
gabei 7/10 3725 days true 0.0 0%
mariak 7/10 3727 days true 0.0 0%
marijad 10/10 3729 days true 0.0 0%
Paul Nugent 8/10 3741 days 0.0 0%
Misha 10/10 3741 days 0.0 0%
Alan Riley 8/10 3753 days true 0.0 0%
Ann Riley 8/10 3753 days true 0.0 0%
Eimear Doyle 9/10 3753 days true 0.0 0%
MV Vroenhoven 10/10 3756 days true 0.0 0%
Sara Reekmans 9/10 3764 days true 0.0 0%
Emily and Alex 9/10 3768 days true 0.0 0%
neilchelt 10/10 3771 days 0.0 0%
jank 10/10 3832 days true 0.0 0%
alanvn 9/10 3854 days true 0.0 0%
bogaard 10/10 3867 days true 0.0 0%
lorah 10/10 3875 days true 0.0 0%
joevw 9/10 3940 days true 0.0 0%
OliverG1 8/10 3973 days true 0.0 0%
Tim_P 6/10 3982 days true 0.0 0%
Nathalie 8/10 3982 days true 0.0 0%
Sofie 9/10 3985 days 0.0 0%
ElissaH 10/10 3987 days true 0.0 0%
KjellR 9/10 3987 days true 0.0 0%
BonnieH 9/10 3987 days true 0.0 0%
CharityW 8/10 3987 days true 0.0 0%
Paul 10/10 3988 days true 0.0 0%
eskim1018 9/10 3996 days 0.0 0%
ChrisD 10/10 4001 days true 0.0 0%
Christian Moll 9/10 4001 days true 0.0 0%
david 10/10 4001 days true 0.0 0%
Doll 10/10 4008 days true 0.0 0%
A 10/10 4016 days true 0.0 0%
Tolsten 10/10 4016 days true 0.0 0%
GaryW 8/10 4020 days true 0.0 0%
ElizabethF 9/10 4020 days true 0.0 0%
Claudia 4/10 4021 days true 0.0 0%
Jason 7/10 4024 days true 0.0 0%
John 8/10 4026 days true 0.0 0%
Hans 8/10 4033 days true 0.0 0%
Carly 7/10 4035 days true 0.0 0%
Jeffrey C 10/10 4044 days 0.0 0%
SueB 10/10 4044 days true 0.0 0%
Dalit 10/10 4051 days true 0.0 0%
Jon 10/10 4056 days true 0.0 0%
Kathrin 9/10 4058 days true 0.0 0%
Oliver 8/10 4059 days true 0.0 0%
Patrick 8/10 4061 days true 0.0 0%
Andrew 8/10 4061 days true 0.0 0%
Graham 6/10 4070 days true 0.0 0%
Maria 10/10 4097 days true 0.0 0%
Jordi 6/10 4105 days true 0.0 0%
nicole 10/10 4107 days 0.0 0%
Rowan 9/10 4130 days true 0.0 0%
abby 9/10 4141 days true 0.0 0%
Andrew 9/10 4152 days true 0.0 0%
Anna 10/10 4182 days true 0.0 0%
Atsuko 8/10 4191 days true 0.0 0%
Trina 10/10 4209 days true 0.0 0%
Terri Scott 10/10 4220 days true 0.0 0%
Brian 10/10 4233 days true 0.0 0%
Wolfgang 8/10 4257 days true 0.0 0%
Gorka Rojas 9/10 4257 days true 0.0 0%
Ashlee Roberts 10/10 4282 days 0.0 0%
Corin Kraft 10/10 4327 days true 0.0 0%
Anke 9/10 4335 days true 0.0 0%
Olga 7/10 4351 days true 0.0 0%
Ben 8/10 4356 days true 0.0 0%
Chris 7/10 4362 days true 0.0 0%
Elizabeth Woodruff 5/10 4365 days true 0.0 0%
Sandra Verbaarschot 10/10 4365 days true 0.0 0%
Denise 10/10 4368 days true 0.0 0%
Lisa Jones 10/10 4372 days true 0.0 0%
Richard Anthony 8/10 4372 days true 0.0 0%
Renske Tehurne 8/10 4376 days true 0.0 0%
Robert 10/10 4377 days true 0.0 0%
Elise 10/10 4377 days true 0.0 0%
Fung 10/10 4377 days true 0.0 0%
Omri Hasson 9/10 4382 days true 0.0 0%
Aharon 10/10 4383 days true 0.0 0%
Sue 8/10 4389 days true 0.0 0%
Ondrej Kacena 8/10 4396 days true 0.0 0%
Laurie 8/10 4396 days true 0.0 0%
Eric P 10/10 4404 days true 0.0 0%
Alex 8/10 4413 days true 0.0 0%
Natalie 10/10 4425 days true 0.0 0%
Paul Cowie 7/10 4460 days true 0.0 0%
Ard 8/10 4460 days true 0.0 0%
Gabriel Faber 8/10 4460 days true 0.0 0%
Michael 8/10 4470 days true 0.0 0%
purplekat99 8/10 4472 days 0.0 0%
Wendy Williams 9/10 4477 days true 0.0 0%
MrsWesley 6/10 4712 days true 0.0 0%
John 7/10 4718 days true 0.0 0%
Heike 9/10 4725 days true 0.0 0%
Colin Sinclair 10/10 4726 days true 0.0 0%
Angela Shearer 8/10 4726 days true 0.0 0%
Loic 9/10 4750 days true 0.0 0%
Reggie 9/10 4751 days true 0.0 0%
FluerBlum 8/10 4763 days true 0.0 0%
Hermann 10/10 4764 days true 0.0 0%
Franz-Josef 9/10 4767 days true 0.0 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

-3.98% 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 199 days.

The Fox Glacier Guiding experience has been adjusted for 199 days. Adjustments are according to the following table.

Days Adjustment
196 -3.92%
197 -3.94%
198 -3.96%
199 -3.98%
200 -4.00%
201 -4.02%
202 -4.04%

Final Ranking Score

81%

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.