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
87.47%
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 | 1693 days | 100% |
| Mona Uttendorf | 10/10 | 3373 days | 33% |
| Sebastian Braun | 10/10 | 3378 days | 33% |
| Tanya Davies | 10/10 | 3427 days | 31% |
| Danielle Stam | 7/10 | 3681 days | 21% |
| Carmen | 10/10 | 3997 days | 12% |
| Claudia Hillebrand | 4/10 | 4345 days | 1% |
| Max Backelandt | 9/10 | 4351 days | 1% |
| Marie Toulemonde | 10/10 | 4351 days | 1% |
| Mark | 7/10 | 4354 days | 1% |
| Daniel Robledo | 8/10 | 4373 days | 0% |
| Maria Camen Santos Lopez | 9/10 | 4373 days | 0% |
| Mara | 9/10 | 4374 days | 0% |
| Andrea Morello | 7/10 | 4374 days | 0% |
| Maria = Moller Hansen | 9/10 | 4383 days | 16% |
| Simon Tanguy | 9/10 | 4391 days | 16% |
| Gassat | 4/10 | 4394 days | 11% |
| Lena Jensen | 9/10 | 4407 days | 16% |
| Jesper Andersen | 9/10 | 4407 days | 16% |
| Claire Lieval | 9/10 | 4419 days | 16% |
| Pioter Jurkowski | 7/10 | 4431 days | 15% |
| Jesse Farrell | 8/10 | 4440 days | 16% |
| Philipp Haass | 6/10 | 4440 days | 14% |
| Chantal | 10/10 | 4444 days | 17% |
| Ken S | 10/10 | 4462 days | 17% |
| Ron Stenhouse | 6/10 | 4706 days | 14% |
| Elizabeth Stenhouse | 8/10 | 4706 days | 16% |
| Andreas Jarvel | 9/10 | 4720 days | 16% |
| Pete Wilson | 4/10 | 4723 days | 11% |
| Marcel | 7/10 | 4730 days | 15% |
| Maria | 8/10 | 4730 days | 16% |
| Clare Cannon | 8/10 | 4747 days | 16% |
| Sara Omary | 9/10 | 4747 days | 16% |
| S M | 10/10 | 4765 days | 17% |
| Alison Langley | 8/10 | 4809 days | 16% |
| Liam Day | 9/10 | 4813 days | 16% |
| Martyn Kool | 8/10 | 4813 days | 16% |
| Michael Kretzschmar | 9/10 | 4813 days | 16% |
| Marieke | 9/10 | 4813 days | 16% |
| Kevin Desjandino | 10/10 | 4814 days | 17% |
| Sharon Yates | 10/10 | 4815 days | 17% |
| Frans Derks | 8/10 | 4820 days | 16% |
| Alexandra van den Brack | 8/10 | 4824 days | 16% |
| Frank and Suzanne | 8/10 | 4827 days | 16% |
| Erik Funk | 8/10 | 4834 days | 16% |
| tanyap | 4/10 | 4857 days | 11% |
| Rob Klauer | 8/10 | 5090 days | 16% |
| Petr Stepanek | 7/10 | 5094 days | 15% |
| Alan Brady | 9/10 | 5099 days | 16% |
| sidcupjon | 9/10 | 5102 days | 16% |
| Robert & Bridget Holden | 8/10 | 5111 days | 16% |
| Vincent & Lian | 9/10 | 5112 days | 16% |
| Stam | 9/10 | 5113 days | 16% |
| Tim & Judith | 8/10 | 5114 days | 16% |
| Rob Gill | 10/10 | 5115 days | 17% |
| Cindy & Glen Kerunsky | 10/10 | 5118 days | 17% |
| R Seiferling | 10/10 | 5123 days | 17% |
| Ursi Meier | 9/10 | 5125 days | 16% |
| Thomas Krause | 8/10 | 5125 days | 16% |
| Hugo ten Brink | 8/10 | 5129 days | 16% |
| kiwifrenchy | 10/10 | 5131 days | 17% |
| Katja Klein | 9/10 | 5176 days | 16% |
| Judith | 8/10 | 5182 days | 16% |
| damaca | 10/10 | 5223 days | 17% |
| KarenW | 10/10 | 5284 days | 17% |
| neilqecosse | 9/10 | 5284 days | 16% |
| MeganJane_85 | 1/10 | 5407 days | 7% |
| Marcus | 9/10 | 5427 days | 16% |
| Lisa Milton | 10/10 | 5430 days | 17% |
| Ken Talan | 10/10 | 5433 days | 17% |
| Alita Smith | 9/10 | 5440 days | 16% |
| Leroy Dimitri | 10/10 | 5450 days | 17% |
| Mr & Mrs Palmer | 9/10 | 5454 days | 16% |
| Sayaka | 10/10 | 5454 days | 17% |
| Stoop | 8/10 | 5454 days | 16% |
| Jacob | 9/10 | 5455 days | 16% |
| Maike | 9/10 | 5456 days | 16% |
| Kauzta | 10/10 | 5456 days | 17% |
| Laura Malins | 8/10 | 5458 days | 16% |
| K & J Overton | 8/10 | 5462 days | 16% |
| Betten | 10/10 | 5467 days | 17% |
| taniadeanryanbrittany | 8/10 | 5468 days | 16% |
| Nicolas | 7/10 | 5469 days | 15% |
| Lenore Dejong | 9/10 | 5470 days | 16% |
| Manu & Gabi | 10/10 | 5473 days | 17% |
| Laura Hayes | 10/10 | 5483 days | 17% |
| Maite Severins | 7/10 | 5487 days | 15% |
| Helen Keighley | 10/10 | 5488 days | 17% |
| Ryan Tull | 10/10 | 5491 days | 17% |
| Calvin Parsons | 8/10 | 5496 days | 16% |
| Christian Foerster | 7/10 | 5496 days | 15% |
| Kristie | 10/10 | 5519 days | 17% |
| elpo | 9/10 | 5741 days | 16% |
| Baumgarten | 8/10 | 5769 days | 16% |
| Stephen M | 7/10 | 5814 days | 15% |
| Corine van Been | 8/10 | 5815 days | 16% |
| s_butler | 10/10 | 5821 days | 17% |
| Benedict Fluthman | 6/10 | 5823 days | 14% |
| Peter Schmidt | 5/10 | 5833 days | 13% |
| Nicky and Andy Prescott | 10/10 | 5835 days | 17% |
| Jackie | 9/10 | 5852 days | 16% |
| Vincente Garrido | 8/10 | 5856 days | 16% |
| Keith Wilde | 10/10 | 5856 days | 17% |
| Ian E | 8/10 | 5857 days | 16% |
| kate | 5/10 | 5858 days | 13% |
| Rob | 8/10 | 5859 days | 16% |
| emily walters | 10/10 | 5861 days | 17% |
| Peter Ortner | 9/10 | 5870 days | 16% |
| Nigel Armstrong | 10/10 | 5872 days | 17% |
| Grainne Ahern | 4/10 | 5892 days | 11% |
| Chidlebyte | 10/10 | 5892 days | 17% |
| gabei | 7/10 | 5907 days | 15% |
| mariak | 7/10 | 5909 days | 15% |
| marijad | 10/10 | 5911 days | 17% |
| Paul Nugent | 8/10 | 5923 days | 16% |
| Misha | 10/10 | 5923 days | 17% |
| Alan Riley | 8/10 | 5935 days | 16% |
| Ann Riley | 8/10 | 5935 days | 16% |
| Eimear Doyle | 9/10 | 5935 days | 16% |
| MV Vroenhoven | 10/10 | 5938 days | 17% |
| Sara Reekmans | 9/10 | 5946 days | 16% |
| Emily and Alex | 9/10 | 5950 days | 16% |
| neilchelt | 10/10 | 5953 days | 17% |
| jank | 10/10 | 6014 days | 17% |
| alanvn | 9/10 | 6036 days | 16% |
| bogaard | 10/10 | 6049 days | 17% |
| lorah | 10/10 | 6057 days | 17% |
| joevw | 9/10 | 6122 days | 16% |
| OliverG1 | 8/10 | 6155 days | 16% |
| Tim_P | 6/10 | 6164 days | 14% |
| Nathalie | 8/10 | 6164 days | 16% |
| Sofie | 9/10 | 6167 days | 16% |
| ElissaH | 10/10 | 6170 days | 17% |
| KjellR | 9/10 | 6170 days | 16% |
| BonnieH | 9/10 | 6170 days | 16% |
| CharityW | 8/10 | 6170 days | 16% |
| Paul | 10/10 | 6171 days | 17% |
| eskim1018 | 9/10 | 6179 days | 16% |
| ChrisD | 10/10 | 6183 days | 17% |
| Christian Moll | 9/10 | 6183 days | 16% |
| david | 10/10 | 6184 days | 17% |
| Doll | 10/10 | 6191 days | 17% |
| A | 10/10 | 6199 days | 17% |
| Tolsten | 10/10 | 6199 days | 17% |
| GaryW | 8/10 | 6202 days | 16% |
| ElizabethF | 9/10 | 6202 days | 16% |
| Claudia | 4/10 | 6204 days | 11% |
| Jason | 7/10 | 6207 days | 15% |
| John | 8/10 | 6209 days | 16% |
| Hans | 8/10 | 6216 days | 16% |
| Carly | 7/10 | 6218 days | 15% |
| Jeffrey C | 10/10 | 6226 days | 17% |
| SueB | 10/10 | 6226 days | 17% |
| Dalit | 10/10 | 6234 days | 17% |
| Jon | 10/10 | 6239 days | 17% |
| Kathrin | 9/10 | 6241 days | 16% |
| Oliver | 8/10 | 6242 days | 16% |
| Patrick | 8/10 | 6244 days | 16% |
| Andrew | 8/10 | 6244 days | 16% |
| Graham | 6/10 | 6253 days | 14% |
| Maria | 10/10 | 6280 days | 17% |
| Jordi | 6/10 | 6288 days | 14% |
| nicole | 10/10 | 6290 days | 17% |
| Rowan | 9/10 | 6313 days | 16% |
| abby | 9/10 | 6324 days | 16% |
| Andrew | 9/10 | 6335 days | 16% |
| Anna | 10/10 | 6365 days | 17% |
| Atsuko | 8/10 | 6374 days | 16% |
| Trina | 10/10 | 6392 days | 17% |
| Terri Scott | 10/10 | 6403 days | 17% |
| Brian | 10/10 | 6416 days | 17% |
| Wolfgang | 8/10 | 6440 days | 16% |
| Gorka Rojas | 9/10 | 6440 days | 16% |
| Ashlee Roberts | 10/10 | 6464 days | 17% |
| Corin Kraft | 10/10 | 6509 days | 17% |
| Anke | 9/10 | 6517 days | 16% |
| Olga | 7/10 | 6533 days | 15% |
| Ben | 8/10 | 6538 days | 16% |
| Chris | 7/10 | 6544 days | 15% |
| Elizabeth Woodruff | 5/10 | 6547 days | 13% |
| Sandra Verbaarschot | 10/10 | 6547 days | 17% |
| Denise | 10/10 | 6550 days | 17% |
| Lisa Jones | 10/10 | 6554 days | 17% |
| Richard Anthony | 8/10 | 6554 days | 16% |
| Renske Tehurne | 8/10 | 6558 days | 16% |
| Robert | 10/10 | 6559 days | 17% |
| Elise | 10/10 | 6559 days | 17% |
| Fung | 10/10 | 6559 days | 17% |
| Omri Hasson | 9/10 | 6564 days | 16% |
| Aharon | 10/10 | 6565 days | 17% |
| Sue | 8/10 | 6571 days | 16% |
| Ondrej Kacena | 8/10 | 6578 days | 16% |
| Laurie | 8/10 | 6578 days | 16% |
| Eric P | 10/10 | 6586 days | 17% |
| Alex | 8/10 | 6595 days | 16% |
| Natalie | 10/10 | 6607 days | 17% |
| Paul Cowie | 7/10 | 6642 days | 15% |
| Ard | 8/10 | 6642 days | 16% |
| Gabriel Faber | 8/10 | 6642 days | 16% |
| Michael | 8/10 | 6652 days | 16% |
| purplekat99 | 8/10 | 6654 days | 16% |
| Wendy Williams | 9/10 | 6659 days | 16% |
| MrsWesley | 6/10 | 6894 days | 14% |
| John | 7/10 | 6900 days | 15% |
| Heike | 9/10 | 6907 days | 16% |
| Colin Sinclair | 10/10 | 6908 days | 17% |
| Angela Shearer | 8/10 | 6908 days | 16% |
| Loic | 9/10 | 6932 days | 16% |
| Reggie | 9/10 | 6933 days | 16% |
| FluerBlum | 8/10 | 6945 days | 16% |
| Hermann | 10/10 | 6946 days | 17% |
| Franz-Josef | 9/10 | 6949 days | 16% |
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
-4.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 53 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 | -4.09% |
| 198 | -4.11% |
| 199 | -4.13% |
| 200 | -4.15% |
| 201 | -4.17% |
| 202 | -4.19% |
| 203 | -4.21% |
| … | … |
Balancing Adjustment
2.17% 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
85%
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.