Kia ora, 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 | 1874 days | 100% |
| Mona Uttendorf | 10/10 | 3554 days | 27% |
| Sebastian Braun | 10/10 | 3559 days | 27% |
| Tanya Davies | 10/10 | 3608 days | 25% |
| Danielle Stam | 7/10 | 3862 days | 12% |
| Carmen | 10/10 | 4178 days | 0% |
| Claudia Hillebrand | 4/10 | 4526 days | 6% |
| Max Backelandt | 9/10 | 4532 days | 13% |
| Marie Toulemonde | 10/10 | 4532 days | 13% |
| Mark | 7/10 | 4535 days | 12% |
| Daniel Robledo | 8/10 | 4554 days | 13% |
| Maria Camen Santos Lopez | 9/10 | 4554 days | 13% |
| Mara | 9/10 | 4555 days | 13% |
| Andrea Morello | 7/10 | 4555 days | 12% |
| Maria = Moller Hansen | 9/10 | 4564 days | 13% |
| Simon Tanguy | 9/10 | 4572 days | 13% |
| Gassat | 4/10 | 4575 days | 6% |
| Lena Jensen | 9/10 | 4588 days | 13% |
| Jesper Andersen | 9/10 | 4588 days | 13% |
| Claire Lieval | 9/10 | 4600 days | 13% |
| Pioter Jurkowski | 7/10 | 4612 days | 12% |
| Jesse Farrell | 8/10 | 4621 days | 13% |
| Philipp Haass | 6/10 | 4621 days | 10% |
| Chantal | 10/10 | 4625 days | 13% |
| Ken S | 10/10 | 4643 days | 13% |
| Ron Stenhouse | 6/10 | 4887 days | 10% |
| Elizabeth Stenhouse | 8/10 | 4887 days | 13% |
| Andreas Jarvel | 9/10 | 4901 days | 13% |
| Pete Wilson | 4/10 | 4904 days | 6% |
| Marcel | 7/10 | 4911 days | 12% |
| Maria | 8/10 | 4911 days | 13% |
| Clare Cannon | 8/10 | 4928 days | 13% |
| Sara Omary | 9/10 | 4928 days | 13% |
| S M | 10/10 | 4946 days | 13% |
| Alison Langley | 8/10 | 4990 days | 13% |
| Liam Day | 9/10 | 4994 days | 13% |
| Martyn Kool | 8/10 | 4994 days | 13% |
| Michael Kretzschmar | 9/10 | 4994 days | 13% |
| Marieke | 9/10 | 4994 days | 13% |
| Kevin Desjandino | 10/10 | 4995 days | 13% |
| Sharon Yates | 10/10 | 4996 days | 13% |
| Frans Derks | 8/10 | 5001 days | 13% |
| Alexandra van den Brack | 8/10 | 5005 days | 13% |
| Frank and Suzanne | 8/10 | 5008 days | 13% |
| Erik Funk | 8/10 | 5015 days | 13% |
| tanyap | 4/10 | 5038 days | 6% |
| Rob Klauer | 8/10 | 5271 days | 13% |
| Petr Stepanek | 7/10 | 5275 days | 12% |
| Alan Brady | 9/10 | 5280 days | 13% |
| sidcupjon | 9/10 | 5283 days | 13% |
| Robert & Bridget Holden | 8/10 | 5292 days | 13% |
| Vincent & Lian | 9/10 | 5293 days | 13% |
| Stam | 9/10 | 5294 days | 13% |
| Tim & Judith | 8/10 | 5295 days | 13% |
| Rob Gill | 10/10 | 5296 days | 13% |
| Cindy & Glen Kerunsky | 10/10 | 5299 days | 13% |
| R Seiferling | 10/10 | 5304 days | 13% |
| Ursi Meier | 9/10 | 5306 days | 13% |
| Thomas Krause | 8/10 | 5306 days | 13% |
| Hugo ten Brink | 8/10 | 5310 days | 13% |
| kiwifrenchy | 10/10 | 5312 days | 13% |
| Katja Klein | 9/10 | 5357 days | 13% |
| Judith | 8/10 | 5363 days | 13% |
| damaca | 10/10 | 5404 days | 13% |
| KarenW | 10/10 | 5465 days | 13% |
| neilqecosse | 9/10 | 5465 days | 13% |
| MeganJane_85 | 1/10 | 5588 days | 0% |
| Marcus | 9/10 | 5608 days | 13% |
| Lisa Milton | 10/10 | 5611 days | 13% |
| Ken Talan | 10/10 | 5614 days | 13% |
| Alita Smith | 9/10 | 5621 days | 13% |
| Leroy Dimitri | 10/10 | 5631 days | 13% |
| Mr & Mrs Palmer | 9/10 | 5635 days | 13% |
| Sayaka | 10/10 | 5635 days | 13% |
| Stoop | 8/10 | 5635 days | 13% |
| Jacob | 9/10 | 5636 days | 13% |
| Maike | 9/10 | 5637 days | 13% |
| Kauzta | 10/10 | 5637 days | 13% |
| Laura Malins | 8/10 | 5639 days | 13% |
| K & J Overton | 8/10 | 5643 days | 13% |
| Betten | 10/10 | 5648 days | 13% |
| taniadeanryanbrittany | 8/10 | 5649 days | 13% |
| Nicolas | 7/10 | 5650 days | 12% |
| Lenore Dejong | 9/10 | 5651 days | 13% |
| Manu & Gabi | 10/10 | 5654 days | 13% |
| Laura Hayes | 10/10 | 5664 days | 13% |
| Maite Severins | 7/10 | 5668 days | 12% |
| Helen Keighley | 10/10 | 5669 days | 13% |
| Ryan Tull | 10/10 | 5672 days | 13% |
| Calvin Parsons | 8/10 | 5677 days | 13% |
| Christian Foerster | 7/10 | 5677 days | 12% |
| Kristie | 10/10 | 5700 days | 13% |
| elpo | 9/10 | 5922 days | 13% |
| Baumgarten | 8/10 | 5950 days | 13% |
| Stephen M | 7/10 | 5995 days | 12% |
| Corine van Been | 8/10 | 5996 days | 13% |
| s_butler | 10/10 | 6002 days | 13% |
| Benedict Fluthman | 6/10 | 6004 days | 10% |
| Peter Schmidt | 5/10 | 6014 days | 8% |
| Nicky and Andy Prescott | 10/10 | 6016 days | 13% |
| Jackie | 9/10 | 6033 days | 13% |
| Vincente Garrido | 8/10 | 6037 days | 13% |
| Keith Wilde | 10/10 | 6037 days | 13% |
| Ian E | 8/10 | 6038 days | 13% |
| kate | 5/10 | 6039 days | 8% |
| Rob | 8/10 | 6040 days | 13% |
| emily walters | 10/10 | 6042 days | 13% |
| Peter Ortner | 9/10 | 6051 days | 13% |
| Nigel Armstrong | 10/10 | 6053 days | 13% |
| Grainne Ahern | 4/10 | 6073 days | 6% |
| Chidlebyte | 10/10 | 6073 days | 13% |
| gabei | 7/10 | 6088 days | 12% |
| mariak | 7/10 | 6090 days | 12% |
| marijad | 10/10 | 6092 days | 13% |
| Paul Nugent | 8/10 | 6104 days | 13% |
| Misha | 10/10 | 6104 days | 13% |
| Alan Riley | 8/10 | 6116 days | 13% |
| Ann Riley | 8/10 | 6116 days | 13% |
| Eimear Doyle | 9/10 | 6116 days | 13% |
| MV Vroenhoven | 10/10 | 6119 days | 13% |
| Sara Reekmans | 9/10 | 6127 days | 13% |
| Emily and Alex | 9/10 | 6131 days | 13% |
| neilchelt | 10/10 | 6134 days | 13% |
| jank | 10/10 | 6195 days | 13% |
| alanvn | 9/10 | 6217 days | 13% |
| bogaard | 10/10 | 6230 days | 13% |
| lorah | 10/10 | 6238 days | 13% |
| joevw | 9/10 | 6303 days | 13% |
| OliverG1 | 8/10 | 6336 days | 13% |
| Tim_P | 6/10 | 6345 days | 10% |
| Nathalie | 8/10 | 6345 days | 13% |
| Sofie | 9/10 | 6348 days | 13% |
| ElissaH | 10/10 | 6350 days | 13% |
| KjellR | 9/10 | 6350 days | 13% |
| BonnieH | 9/10 | 6350 days | 13% |
| CharityW | 8/10 | 6350 days | 13% |
| Paul | 10/10 | 6351 days | 13% |
| eskim1018 | 9/10 | 6360 days | 13% |
| ChrisD | 10/10 | 6364 days | 13% |
| Christian Moll | 9/10 | 6364 days | 13% |
| david | 10/10 | 6364 days | 13% |
| Doll | 10/10 | 6372 days | 13% |
| A | 10/10 | 6379 days | 13% |
| Tolsten | 10/10 | 6380 days | 13% |
| GaryW | 8/10 | 6383 days | 13% |
| ElizabethF | 9/10 | 6383 days | 13% |
| Claudia | 4/10 | 6385 days | 6% |
| Jason | 7/10 | 6387 days | 12% |
| John | 8/10 | 6389 days | 13% |
| Hans | 8/10 | 6396 days | 13% |
| Carly | 7/10 | 6399 days | 12% |
| Jeffrey C | 10/10 | 6407 days | 13% |
| SueB | 10/10 | 6407 days | 13% |
| Dalit | 10/10 | 6414 days | 13% |
| Jon | 10/10 | 6419 days | 13% |
| Kathrin | 9/10 | 6421 days | 13% |
| Oliver | 8/10 | 6422 days | 13% |
| Patrick | 8/10 | 6425 days | 13% |
| Andrew | 8/10 | 6425 days | 13% |
| Graham | 6/10 | 6434 days | 10% |
| Maria | 10/10 | 6461 days | 13% |
| Jordi | 6/10 | 6468 days | 10% |
| nicole | 10/10 | 6470 days | 13% |
| Rowan | 9/10 | 6493 days | 13% |
| abby | 9/10 | 6505 days | 13% |
| Andrew | 9/10 | 6515 days | 13% |
| Anna | 10/10 | 6545 days | 13% |
| Atsuko | 8/10 | 6554 days | 13% |
| Trina | 10/10 | 6572 days | 13% |
| Terri Scott | 10/10 | 6584 days | 13% |
| Brian | 10/10 | 6596 days | 13% |
| Wolfgang | 8/10 | 6621 days | 13% |
| Gorka Rojas | 9/10 | 6621 days | 13% |
| Ashlee Roberts | 10/10 | 6645 days | 13% |
| Corin Kraft | 10/10 | 6690 days | 13% |
| Anke | 9/10 | 6698 days | 13% |
| Olga | 7/10 | 6714 days | 12% |
| Ben | 8/10 | 6719 days | 13% |
| Chris | 7/10 | 6725 days | 12% |
| Elizabeth Woodruff | 5/10 | 6728 days | 8% |
| Sandra Verbaarschot | 10/10 | 6728 days | 13% |
| Denise | 10/10 | 6731 days | 13% |
| Lisa Jones | 10/10 | 6735 days | 13% |
| Richard Anthony | 8/10 | 6735 days | 13% |
| Renske Tehurne | 8/10 | 6739 days | 13% |
| Robert | 10/10 | 6740 days | 13% |
| Elise | 10/10 | 6740 days | 13% |
| Fung | 10/10 | 6740 days | 13% |
| Omri Hasson | 9/10 | 6745 days | 13% |
| Aharon | 10/10 | 6746 days | 13% |
| Sue | 8/10 | 6752 days | 13% |
| Ondrej Kacena | 8/10 | 6759 days | 13% |
| Laurie | 8/10 | 6759 days | 13% |
| Eric P | 10/10 | 6767 days | 13% |
| Alex | 8/10 | 6776 days | 13% |
| Natalie | 10/10 | 6788 days | 13% |
| Paul Cowie | 7/10 | 6823 days | 12% |
| Ard | 8/10 | 6823 days | 13% |
| Gabriel Faber | 8/10 | 6823 days | 13% |
| Michael | 8/10 | 6833 days | 13% |
| purplekat99 | 8/10 | 6835 days | 13% |
| Wendy Williams | 9/10 | 6840 days | 13% |
| MrsWesley | 6/10 | 7075 days | 10% |
| John | 7/10 | 7081 days | 12% |
| Heike | 9/10 | 7088 days | 13% |
| Colin Sinclair | 10/10 | 7089 days | 13% |
| Angela Shearer | 8/10 | 7089 days | 13% |
| Loic | 9/10 | 7113 days | 13% |
| Reggie | 9/10 | 7114 days | 13% |
| FluerBlum | 8/10 | 7126 days | 13% |
| Hermann | 10/10 | 7127 days | 13% |
| Franz-Josef | 9/10 | 7130 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
-2.35% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 111 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 | -2.31% |
| 198 | -2.32% |
| 199 | -2.33% |
| 200 | -2.35% |
| 201 | -2.36% |
| 202 | -2.37% |
| 203 | -2.38% |
| … | … |
Balancing Adjustment
1.87% 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.