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
87.80%
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 | 1617 days | 100% |
| Mona Uttendorf | 10/10 | 3297 days | 28% |
| Sebastian Braun | 10/10 | 3302 days | 28% |
| Tanya Davies | 10/10 | 3351 days | 27% |
| Danielle Stam | 7/10 | 3605 days | 19% |
| Carmen | 10/10 | 3921 days | 12% |
| Claudia Hillebrand | 4/10 | 4269 days | 2% |
| Max Backelandt | 9/10 | 4275 days | 2% |
| Marie Toulemonde | 10/10 | 4275 days | 2% |
| Mark | 7/10 | 4278 days | 2% |
| Daniel Robledo | 8/10 | 4297 days | 2% |
| Maria Camen Santos Lopez | 9/10 | 4297 days | 2% |
| Mara | 9/10 | 4298 days | 2% |
| Andrea Morello | 7/10 | 4298 days | 2% |
| Maria = Moller Hansen | 9/10 | 4307 days | 2% |
| Simon Tanguy | 9/10 | 4315 days | 1% |
| Gassat | 4/10 | 4318 days | 1% |
| Lena Jensen | 9/10 | 4331 days | 1% |
| Jesper Andersen | 9/10 | 4331 days | 1% |
| Claire Lieval | 9/10 | 4343 days | 1% |
| Pioter Jurkowski | 7/10 | 4355 days | 0% |
| Jesse Farrell | 8/10 | 4364 days | 0% |
| Philipp Haass | 6/10 | 4364 days | 0% |
| Chantal | 10/10 | 4368 days | 0% |
| Ken S | 10/10 | 4386 days | 13% |
| Ron Stenhouse | 6/10 | 4630 days | 11% |
| Elizabeth Stenhouse | 8/10 | 4630 days | 13% |
| Andreas Jarvel | 9/10 | 4644 days | 13% |
| Pete Wilson | 4/10 | 4647 days | 8% |
| Marcel | 7/10 | 4654 days | 12% |
| Maria | 8/10 | 4654 days | 13% |
| Clare Cannon | 8/10 | 4671 days | 13% |
| Sara Omary | 9/10 | 4671 days | 13% |
| S M | 10/10 | 4689 days | 13% |
| Alison Langley | 8/10 | 4733 days | 13% |
| Liam Day | 9/10 | 4737 days | 13% |
| Martyn Kool | 8/10 | 4737 days | 13% |
| Michael Kretzschmar | 9/10 | 4737 days | 13% |
| Marieke | 9/10 | 4737 days | 13% |
| Kevin Desjandino | 10/10 | 4738 days | 13% |
| Sharon Yates | 10/10 | 4739 days | 13% |
| Frans Derks | 8/10 | 4744 days | 13% |
| Alexandra van den Brack | 8/10 | 4748 days | 13% |
| Frank and Suzanne | 8/10 | 4751 days | 13% |
| Erik Funk | 8/10 | 4758 days | 13% |
| tanyap | 4/10 | 4781 days | 8% |
| Rob Klauer | 8/10 | 5014 days | 13% |
| Petr Stepanek | 7/10 | 5018 days | 12% |
| Alan Brady | 9/10 | 5023 days | 13% |
| sidcupjon | 9/10 | 5026 days | 13% |
| Robert & Bridget Holden | 8/10 | 5035 days | 13% |
| Vincent & Lian | 9/10 | 5036 days | 13% |
| Stam | 9/10 | 5037 days | 13% |
| Tim & Judith | 8/10 | 5038 days | 13% |
| Rob Gill | 10/10 | 5039 days | 13% |
| Cindy & Glen Kerunsky | 10/10 | 5042 days | 13% |
| R Seiferling | 10/10 | 5047 days | 13% |
| Ursi Meier | 9/10 | 5049 days | 13% |
| Thomas Krause | 8/10 | 5049 days | 13% |
| Hugo ten Brink | 8/10 | 5053 days | 13% |
| kiwifrenchy | 10/10 | 5055 days | 13% |
| Katja Klein | 9/10 | 5100 days | 13% |
| Judith | 8/10 | 5106 days | 13% |
| damaca | 10/10 | 5147 days | 13% |
| KarenW | 10/10 | 5208 days | 13% |
| neilqecosse | 9/10 | 5208 days | 13% |
| MeganJane_85 | 1/10 | 5331 days | 5% |
| Marcus | 9/10 | 5351 days | 13% |
| Lisa Milton | 10/10 | 5354 days | 13% |
| Ken Talan | 10/10 | 5357 days | 13% |
| Alita Smith | 9/10 | 5364 days | 13% |
| Leroy Dimitri | 10/10 | 5374 days | 13% |
| Mr & Mrs Palmer | 9/10 | 5378 days | 13% |
| Sayaka | 10/10 | 5378 days | 13% |
| Stoop | 8/10 | 5378 days | 13% |
| Jacob | 9/10 | 5379 days | 13% |
| Maike | 9/10 | 5380 days | 13% |
| Kauzta | 10/10 | 5380 days | 13% |
| Laura Malins | 8/10 | 5382 days | 13% |
| K & J Overton | 8/10 | 5386 days | 13% |
| Betten | 10/10 | 5391 days | 13% |
| taniadeanryanbrittany | 8/10 | 5392 days | 13% |
| Nicolas | 7/10 | 5393 days | 12% |
| Lenore Dejong | 9/10 | 5394 days | 13% |
| Manu & Gabi | 10/10 | 5397 days | 13% |
| Laura Hayes | 10/10 | 5407 days | 13% |
| Maite Severins | 7/10 | 5411 days | 12% |
| Helen Keighley | 10/10 | 5412 days | 13% |
| Ryan Tull | 10/10 | 5415 days | 13% |
| Calvin Parsons | 8/10 | 5420 days | 13% |
| Christian Foerster | 7/10 | 5420 days | 12% |
| Kristie | 10/10 | 5443 days | 13% |
| elpo | 9/10 | 5665 days | 13% |
| Baumgarten | 8/10 | 5693 days | 13% |
| Stephen M | 7/10 | 5738 days | 12% |
| Corine van Been | 8/10 | 5739 days | 13% |
| s_butler | 10/10 | 5745 days | 13% |
| Benedict Fluthman | 6/10 | 5747 days | 11% |
| Peter Schmidt | 5/10 | 5757 days | 10% |
| Nicky and Andy Prescott | 10/10 | 5759 days | 13% |
| Jackie | 9/10 | 5776 days | 13% |
| Vincente Garrido | 8/10 | 5780 days | 13% |
| Keith Wilde | 10/10 | 5780 days | 13% |
| Ian E | 8/10 | 5781 days | 13% |
| kate | 5/10 | 5782 days | 10% |
| Rob | 8/10 | 5783 days | 13% |
| emily walters | 10/10 | 5785 days | 13% |
| Peter Ortner | 9/10 | 5794 days | 13% |
| Nigel Armstrong | 10/10 | 5796 days | 13% |
| Grainne Ahern | 4/10 | 5816 days | 8% |
| Chidlebyte | 10/10 | 5816 days | 13% |
| gabei | 7/10 | 5831 days | 12% |
| mariak | 7/10 | 5833 days | 12% |
| marijad | 10/10 | 5835 days | 13% |
| Paul Nugent | 8/10 | 5847 days | 13% |
| Misha | 10/10 | 5847 days | 13% |
| Alan Riley | 8/10 | 5859 days | 13% |
| Ann Riley | 8/10 | 5859 days | 13% |
| Eimear Doyle | 9/10 | 5859 days | 13% |
| MV Vroenhoven | 10/10 | 5862 days | 13% |
| Sara Reekmans | 9/10 | 5870 days | 13% |
| Emily and Alex | 9/10 | 5874 days | 13% |
| neilchelt | 10/10 | 5877 days | 13% |
| jank | 10/10 | 5938 days | 13% |
| alanvn | 9/10 | 5960 days | 13% |
| bogaard | 10/10 | 5973 days | 13% |
| lorah | 10/10 | 5981 days | 13% |
| joevw | 9/10 | 6046 days | 13% |
| OliverG1 | 8/10 | 6079 days | 13% |
| Tim_P | 6/10 | 6088 days | 11% |
| Nathalie | 8/10 | 6088 days | 13% |
| Sofie | 9/10 | 6091 days | 13% |
| ElissaH | 10/10 | 6094 days | 13% |
| KjellR | 9/10 | 6094 days | 13% |
| BonnieH | 9/10 | 6094 days | 13% |
| CharityW | 8/10 | 6094 days | 13% |
| Paul | 10/10 | 6095 days | 13% |
| eskim1018 | 9/10 | 6103 days | 13% |
| ChrisD | 10/10 | 6107 days | 13% |
| Christian Moll | 9/10 | 6107 days | 13% |
| david | 10/10 | 6108 days | 13% |
| Doll | 10/10 | 6115 days | 13% |
| A | 10/10 | 6123 days | 13% |
| Tolsten | 10/10 | 6123 days | 13% |
| GaryW | 8/10 | 6126 days | 13% |
| ElizabethF | 9/10 | 6126 days | 13% |
| Claudia | 4/10 | 6128 days | 8% |
| Jason | 7/10 | 6131 days | 12% |
| John | 8/10 | 6133 days | 13% |
| Hans | 8/10 | 6140 days | 13% |
| Carly | 7/10 | 6142 days | 12% |
| Jeffrey C | 10/10 | 6150 days | 13% |
| SueB | 10/10 | 6150 days | 13% |
| Dalit | 10/10 | 6158 days | 13% |
| Jon | 10/10 | 6163 days | 13% |
| Kathrin | 9/10 | 6165 days | 13% |
| Oliver | 8/10 | 6166 days | 13% |
| Patrick | 8/10 | 6168 days | 13% |
| Andrew | 8/10 | 6168 days | 13% |
| Graham | 6/10 | 6177 days | 11% |
| Maria | 10/10 | 6204 days | 13% |
| Jordi | 6/10 | 6212 days | 11% |
| nicole | 10/10 | 6214 days | 13% |
| Rowan | 9/10 | 6237 days | 13% |
| abby | 9/10 | 6248 days | 13% |
| Andrew | 9/10 | 6259 days | 13% |
| Anna | 10/10 | 6289 days | 13% |
| Atsuko | 8/10 | 6298 days | 13% |
| Trina | 10/10 | 6316 days | 13% |
| Terri Scott | 10/10 | 6327 days | 13% |
| Brian | 10/10 | 6340 days | 13% |
| Wolfgang | 8/10 | 6364 days | 13% |
| Gorka Rojas | 9/10 | 6364 days | 13% |
| Ashlee Roberts | 10/10 | 6388 days | 13% |
| Corin Kraft | 10/10 | 6433 days | 13% |
| Anke | 9/10 | 6441 days | 13% |
| Olga | 7/10 | 6457 days | 12% |
| Ben | 8/10 | 6462 days | 13% |
| Chris | 7/10 | 6468 days | 12% |
| Elizabeth Woodruff | 5/10 | 6471 days | 10% |
| Sandra Verbaarschot | 10/10 | 6471 days | 13% |
| Denise | 10/10 | 6474 days | 13% |
| Lisa Jones | 10/10 | 6478 days | 13% |
| Richard Anthony | 8/10 | 6478 days | 13% |
| Renske Tehurne | 8/10 | 6482 days | 13% |
| Robert | 10/10 | 6483 days | 13% |
| Elise | 10/10 | 6483 days | 13% |
| Fung | 10/10 | 6483 days | 13% |
| Omri Hasson | 9/10 | 6488 days | 13% |
| Aharon | 10/10 | 6489 days | 13% |
| Sue | 8/10 | 6495 days | 13% |
| Ondrej Kacena | 8/10 | 6502 days | 13% |
| Laurie | 8/10 | 6502 days | 13% |
| Eric P | 10/10 | 6510 days | 13% |
| Alex | 8/10 | 6519 days | 13% |
| Natalie | 10/10 | 6531 days | 13% |
| Paul Cowie | 7/10 | 6566 days | 12% |
| Ard | 8/10 | 6566 days | 13% |
| Gabriel Faber | 8/10 | 6566 days | 13% |
| Michael | 8/10 | 6576 days | 13% |
| purplekat99 | 8/10 | 6578 days | 13% |
| Wendy Williams | 9/10 | 6583 days | 13% |
| MrsWesley | 6/10 | 6818 days | 11% |
| John | 7/10 | 6824 days | 12% |
| Heike | 9/10 | 6831 days | 13% |
| Colin Sinclair | 10/10 | 6832 days | 13% |
| Angela Shearer | 8/10 | 6832 days | 13% |
| Loic | 9/10 | 6856 days | 13% |
| Reggie | 9/10 | 6857 days | 13% |
| FluerBlum | 8/10 | 6869 days | 13% |
| Hermann | 10/10 | 6870 days | 13% |
| Franz-Josef | 9/10 | 6873 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
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
2.09% 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
86%
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.