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 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.
Fox Glacier Guiding
Valid Reviews
212 Valid Reviews
The Fox Glacier Guiding experience has a total of 212 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 212 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 71 |
|
33% |
| 9/10 | 52 |
|
25% |
| 8/10 | 54 |
|
25% |
| 7/10 | 18 |
|
8% |
| 6/10 | 7 |
|
3% |
| 5/10 | 3 |
|
1% |
| 4/10 | 6 |
|
3% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 1 |
|
0% |
85.75% Average
The raw data average (mean) for all the Fox Glacier Guiding valid reviews is 85.75% and is based on 212 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 212 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
87.12%
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 |
|---|---|---|---|
| Ingrid | 10/10 | 1876 days | 100% |
| Mona Uttendorf | 10/10 | 3556 days | 27% |
| Sebastian Braun | 10/10 | 3561 days | 27% |
| Tanya Davies | 10/10 | 3610 days | 25% |
| Danielle Stam | 7/10 | 3864 days | 12% |
| Carmen | 10/10 | 4180 days | 0% |
| Claudia Hillebrand | 4/10 | 4528 days | 6% |
| Max Backelandt | 9/10 | 4534 days | 13% |
| Marie Toulemonde | 10/10 | 4534 days | 13% |
| Mark | 7/10 | 4537 days | 12% |
| Daniel Robledo | 8/10 | 4556 days | 13% |
| Maria Camen Santos Lopez | 9/10 | 4556 days | 13% |
| Mara | 9/10 | 4557 days | 13% |
| Andrea Morello | 7/10 | 4557 days | 12% |
| Maria = Moller Hansen | 9/10 | 4566 days | 13% |
| Simon Tanguy | 9/10 | 4574 days | 13% |
| Gassat | 4/10 | 4577 days | 6% |
| Lena Jensen | 9/10 | 4590 days | 13% |
| Jesper Andersen | 9/10 | 4590 days | 13% |
| Claire Lieval | 9/10 | 4602 days | 13% |
| Pioter Jurkowski | 7/10 | 4614 days | 12% |
| Jesse Farrell | 8/10 | 4623 days | 13% |
| Philipp Haass | 6/10 | 4623 days | 10% |
| Chantal | 10/10 | 4627 days | 13% |
| Ken S | 10/10 | 4645 days | 13% |
| Ron Stenhouse | 6/10 | 4889 days | 10% |
| Elizabeth Stenhouse | 8/10 | 4889 days | 13% |
| Andreas Jarvel | 9/10 | 4903 days | 13% |
| Pete Wilson | 4/10 | 4906 days | 6% |
| Marcel | 7/10 | 4913 days | 12% |
| Maria | 8/10 | 4913 days | 13% |
| Clare Cannon | 8/10 | 4930 days | 13% |
| Sara Omary | 9/10 | 4930 days | 13% |
| S M | 10/10 | 4948 days | 13% |
| Alison Langley | 8/10 | 4992 days | 13% |
| Liam Day | 9/10 | 4996 days | 13% |
| Martyn Kool | 8/10 | 4996 days | 13% |
| Michael Kretzschmar | 9/10 | 4996 days | 13% |
| Marieke | 9/10 | 4996 days | 13% |
| Kevin Desjandino | 10/10 | 4997 days | 13% |
| Sharon Yates | 10/10 | 4998 days | 13% |
| Frans Derks | 8/10 | 5003 days | 13% |
| Alexandra van den Brack | 8/10 | 5007 days | 13% |
| Frank and Suzanne | 8/10 | 5010 days | 13% |
| Erik Funk | 8/10 | 5017 days | 13% |
| tanyap | 4/10 | 5040 days | 6% |
| Rob Klauer | 8/10 | 5273 days | 13% |
| Petr Stepanek | 7/10 | 5277 days | 12% |
| Alan Brady | 9/10 | 5282 days | 13% |
| sidcupjon | 9/10 | 5285 days | 13% |
| Robert & Bridget Holden | 8/10 | 5294 days | 13% |
| Vincent & Lian | 9/10 | 5295 days | 13% |
| Stam | 9/10 | 5296 days | 13% |
| Tim & Judith | 8/10 | 5297 days | 13% |
| Rob Gill | 10/10 | 5298 days | 13% |
| Cindy & Glen Kerunsky | 10/10 | 5301 days | 13% |
| R Seiferling | 10/10 | 5306 days | 13% |
| Ursi Meier | 9/10 | 5308 days | 13% |
| Thomas Krause | 8/10 | 5308 days | 13% |
| Hugo ten Brink | 8/10 | 5312 days | 13% |
| kiwifrenchy | 10/10 | 5314 days | 13% |
| Katja Klein | 9/10 | 5359 days | 13% |
| Judith | 8/10 | 5365 days | 13% |
| damaca | 10/10 | 5406 days | 13% |
| KarenW | 10/10 | 5467 days | 13% |
| neilqecosse | 9/10 | 5467 days | 13% |
| MeganJane_85 | 1/10 | 5590 days | 0% |
| Marcus | 9/10 | 5610 days | 13% |
| Lisa Milton | 10/10 | 5613 days | 13% |
| Ken Talan | 10/10 | 5616 days | 13% |
| Alita Smith | 9/10 | 5623 days | 13% |
| Leroy Dimitri | 10/10 | 5633 days | 13% |
| Mr & Mrs Palmer | 9/10 | 5637 days | 13% |
| Sayaka | 10/10 | 5637 days | 13% |
| Stoop | 8/10 | 5637 days | 13% |
| Jacob | 9/10 | 5638 days | 13% |
| Maike | 9/10 | 5639 days | 13% |
| Kauzta | 10/10 | 5639 days | 13% |
| Laura Malins | 8/10 | 5641 days | 13% |
| K & J Overton | 8/10 | 5645 days | 13% |
| Betten | 10/10 | 5650 days | 13% |
| taniadeanryanbrittany | 8/10 | 5651 days | 13% |
| Nicolas | 7/10 | 5652 days | 12% |
| Lenore Dejong | 9/10 | 5653 days | 13% |
| Manu & Gabi | 10/10 | 5656 days | 13% |
| Laura Hayes | 10/10 | 5666 days | 13% |
| Maite Severins | 7/10 | 5670 days | 12% |
| Helen Keighley | 10/10 | 5671 days | 13% |
| Ryan Tull | 10/10 | 5674 days | 13% |
| Calvin Parsons | 8/10 | 5679 days | 13% |
| Christian Foerster | 7/10 | 5679 days | 12% |
| Kristie | 10/10 | 5702 days | 13% |
| elpo | 9/10 | 5924 days | 13% |
| Baumgarten | 8/10 | 5952 days | 13% |
| Stephen M | 7/10 | 5997 days | 12% |
| Corine van Been | 8/10 | 5998 days | 13% |
| s_butler | 10/10 | 6004 days | 13% |
| Benedict Fluthman | 6/10 | 6006 days | 10% |
| Peter Schmidt | 5/10 | 6016 days | 8% |
| Nicky and Andy Prescott | 10/10 | 6018 days | 13% |
| Jackie | 9/10 | 6035 days | 13% |
| Vincente Garrido | 8/10 | 6039 days | 13% |
| Keith Wilde | 10/10 | 6039 days | 13% |
| Ian E | 8/10 | 6040 days | 13% |
| kate | 5/10 | 6041 days | 8% |
| Rob | 8/10 | 6042 days | 13% |
| emily walters | 10/10 | 6044 days | 13% |
| Peter Ortner | 9/10 | 6053 days | 13% |
| Nigel Armstrong | 10/10 | 6055 days | 13% |
| Grainne Ahern | 4/10 | 6075 days | 6% |
| Chidlebyte | 10/10 | 6075 days | 13% |
| gabei | 7/10 | 6090 days | 12% |
| mariak | 7/10 | 6092 days | 12% |
| marijad | 10/10 | 6094 days | 13% |
| Paul Nugent | 8/10 | 6106 days | 13% |
| Misha | 10/10 | 6106 days | 13% |
| Alan Riley | 8/10 | 6118 days | 13% |
| Ann Riley | 8/10 | 6118 days | 13% |
| Eimear Doyle | 9/10 | 6118 days | 13% |
| MV Vroenhoven | 10/10 | 6121 days | 13% |
| Sara Reekmans | 9/10 | 6129 days | 13% |
| Emily and Alex | 9/10 | 6133 days | 13% |
| neilchelt | 10/10 | 6136 days | 13% |
| jank | 10/10 | 6197 days | 13% |
| alanvn | 9/10 | 6219 days | 13% |
| bogaard | 10/10 | 6232 days | 13% |
| lorah | 10/10 | 6240 days | 13% |
| joevw | 9/10 | 6305 days | 13% |
| OliverG1 | 8/10 | 6338 days | 13% |
| Tim_P | 6/10 | 6347 days | 10% |
| Nathalie | 8/10 | 6347 days | 13% |
| Sofie | 9/10 | 6350 days | 13% |
| ElissaH | 10/10 | 6352 days | 13% |
| KjellR | 9/10 | 6352 days | 13% |
| BonnieH | 9/10 | 6352 days | 13% |
| CharityW | 8/10 | 6352 days | 13% |
| Paul | 10/10 | 6353 days | 13% |
| eskim1018 | 9/10 | 6361 days | 13% |
| ChrisD | 10/10 | 6366 days | 13% |
| Christian Moll | 9/10 | 6366 days | 13% |
| david | 10/10 | 6366 days | 13% |
| Doll | 10/10 | 6373 days | 13% |
| A | 10/10 | 6381 days | 13% |
| Tolsten | 10/10 | 6381 days | 13% |
| GaryW | 8/10 | 6385 days | 13% |
| ElizabethF | 9/10 | 6385 days | 13% |
| Claudia | 4/10 | 6386 days | 6% |
| Jason | 7/10 | 6389 days | 12% |
| John | 8/10 | 6391 days | 13% |
| Hans | 8/10 | 6398 days | 13% |
| Carly | 7/10 | 6400 days | 12% |
| Jeffrey C | 10/10 | 6409 days | 13% |
| SueB | 10/10 | 6409 days | 13% |
| Dalit | 10/10 | 6416 days | 13% |
| Jon | 10/10 | 6421 days | 13% |
| Kathrin | 9/10 | 6423 days | 13% |
| Oliver | 8/10 | 6424 days | 13% |
| Patrick | 8/10 | 6426 days | 13% |
| Andrew | 8/10 | 6426 days | 13% |
| Graham | 6/10 | 6436 days | 10% |
| Maria | 10/10 | 6462 days | 13% |
| Jordi | 6/10 | 6470 days | 10% |
| nicole | 10/10 | 6472 days | 13% |
| Rowan | 9/10 | 6495 days | 13% |
| abby | 9/10 | 6507 days | 13% |
| Andrew | 9/10 | 6517 days | 13% |
| Anna | 10/10 | 6547 days | 13% |
| Atsuko | 8/10 | 6556 days | 13% |
| Trina | 10/10 | 6574 days | 13% |
| Terri Scott | 10/10 | 6585 days | 13% |
| Brian | 10/10 | 6598 days | 13% |
| Wolfgang | 8/10 | 6622 days | 13% |
| Gorka Rojas | 9/10 | 6622 days | 13% |
| Ashlee Roberts | 10/10 | 6647 days | 13% |
| Corin Kraft | 10/10 | 6692 days | 13% |
| Anke | 9/10 | 6700 days | 13% |
| Olga | 7/10 | 6716 days | 12% |
| Ben | 8/10 | 6721 days | 13% |
| Chris | 7/10 | 6727 days | 12% |
| Elizabeth Woodruff | 5/10 | 6730 days | 8% |
| Sandra Verbaarschot | 10/10 | 6730 days | 13% |
| Denise | 10/10 | 6733 days | 13% |
| Lisa Jones | 10/10 | 6737 days | 13% |
| Richard Anthony | 8/10 | 6737 days | 13% |
| Renske Tehurne | 8/10 | 6741 days | 13% |
| Robert | 10/10 | 6742 days | 13% |
| Elise | 10/10 | 6742 days | 13% |
| Fung | 10/10 | 6742 days | 13% |
| Omri Hasson | 9/10 | 6747 days | 13% |
| Aharon | 10/10 | 6748 days | 13% |
| Sue | 8/10 | 6754 days | 13% |
| Ondrej Kacena | 8/10 | 6761 days | 13% |
| Laurie | 8/10 | 6761 days | 13% |
| Eric P | 10/10 | 6769 days | 13% |
| Alex | 8/10 | 6778 days | 13% |
| Natalie | 10/10 | 6790 days | 13% |
| Paul Cowie | 7/10 | 6825 days | 12% |
| Ard | 8/10 | 6825 days | 13% |
| Gabriel Faber | 8/10 | 6825 days | 13% |
| Michael | 8/10 | 6835 days | 13% |
| purplekat99 | 8/10 | 6837 days | 13% |
| Wendy Williams | 9/10 | 6842 days | 13% |
| MrsWesley | 6/10 | 7077 days | 10% |
| John | 7/10 | 7083 days | 12% |
| Heike | 9/10 | 7090 days | 13% |
| Colin Sinclair | 10/10 | 7091 days | 13% |
| Angela Shearer | 8/10 | 7091 days | 13% |
| Loic | 9/10 | 7115 days | 13% |
| Reggie | 9/10 | 7116 days | 13% |
| FluerBlum | 8/10 | 7128 days | 13% |
| Hermann | 10/10 | 7129 days | 13% |
| Franz-Josef | 9/10 | 7132 days | 13% |
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
-2.38% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 109 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 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.
The Fox Glacier Guiding experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -2.34% |
| 198 | -2.36% |
| 199 | -2.37% |
| 200 | -2.38% |
| 201 | -2.39% |
| 202 | -2.40% |
| 203 | -2.42% |
| … | … |
Balancing Adjustment
1.88% 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
87%
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.