Hey, 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 Bluebridge Cook Strait Ferry.
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.
Bluebridge Cook Strait Ferry
Valid Reviews
227 Valid Reviews
The Bluebridge Cook Strait Ferry experience has a total of 232 reviews. There are 227 valid reviews that are included when calculating the ranking score and 5 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 227 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 36 |
|
16% |
| 9/10 | 28 |
|
12% |
| 8/10 | 64 |
|
28% |
| 7/10 | 54 |
|
24% |
| 6/10 | 17 |
|
7% |
| 5/10 | 7 |
|
3% |
| 4/10 | 5 |
|
2% |
| 3/10 | 5 |
|
2% |
| 2/10 | 3 |
|
1% |
| 1/10 | 8 |
|
4% |
74.36% Average
The raw data average (mean) for all the Bluebridge Cook Strait Ferry valid reviews is 74.36% and is based on 227 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
191 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 227 valid reviews, the experience has 191 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 191 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 26 |
|
14% |
| 9/10 | 27 |
|
14% |
| 8/10 | 59 |
|
31% |
| 7/10 | 49 |
|
26% |
| 6/10 | 17 |
|
9% |
| 5/10 | 5 |
|
3% |
| 4/10 | 3 |
|
2% |
| 3/10 | 2 |
|
1% |
| 2/10 | 3 |
|
2% |
| 1/10 | 0 |
|
0% |
76.91% Average
The raw data average (mean) for all the Bluebridge Cook Strait Ferry face-to-face reviews is 76.91% and is based on 191 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
73.70%
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 |
|---|---|---|---|
| Bonnie Henderson - Waho | 10/10 | 105 days | 100% |
| Glenys Everitt | 10/10 | 197 days | 98% |
| Warren | 5/10 | 317 days | 72% |
| Matt | 10/10 | 1048 days | 40% |
| SBlu | 1/10 | 1079 days | 15% |
| James Fuller | 3/10 | 1110 days | 19% |
| Mark | 4/10 | 1140 days | 21% |
| Véronique Laplante | 1/10 | 1140 days | 13% |
| Brian symmes | 1/10 | 1140 days | 13% |
| R. Armstrong | 5/10 | 1171 days | 23% |
| Sandy | 1/10 | 1354 days | 7% |
| Jonathan | 1/10 | 1505 days | 4% |
| PeteR | 3/10 | 1536 days | 5% |
| La Vie | 1/10 | 1719 days | 2% |
| Pauline Kane | 10/10 | 2297 days | 4% |
| Roy Sandbrook | 10/10 | 2450 days | 4% |
| Nickclev | 3/10 | 2481 days | 2% |
| Pepe Huebner | 4/10 | 2904 days | 2% |
| Jennie Tollerton | 8/10 | 2967 days | 3% |
| Phil Baker | 9/10 | 2970 days | 3% |
| Lily Roelofs | 1/10 | 2996 days | 1% |
| Vince Midmore | 1/10 | 3238 days | 1% |
| Francesca Scott | 10/10 | 3247 days | 2% |
| Erna Muller | 9/10 | 3255 days | 2% |
| Flip Hoogeveen | 8/10 | 3255 days | 2% |
| Chaulet | 5/10 | 3258 days | 2% |
| Felix Koehler | 4/10 | 3259 days | 1% |
| Kristina Nunoz | 7/10 | 3259 days | 2% |
| Becky Fox | 7/10 | 3261 days | 2% |
| Emma Millett | 8/10 | 3261 days | 2% |
| Rohzine | 7/10 | 3261 days | 2% |
| P and W Gene | 8/10 | 3262 days | 2% |
| Maaike | 8/10 | 3290 days | 2% |
| T Geelen | 8/10 | 3290 days | 2% |
| Wendy Steer | 8/10 | 3296 days | 2% |
| Marcel Felder | 7/10 | 3300 days | 2% |
| Jonas Gorb | 8/10 | 3304 days | 2% |
| Rahel | 7/10 | 3304 days | 2% |
| Maria Eriksson | 7/10 | 3307 days | 2% |
| Gilbert Baptiste | 8/10 | 3307 days | 2% |
| Emilie Bavard | 7/10 | 3307 days | 2% |
| Josh Bird | 7/10 | 3309 days | 2% |
| Jemima Brown | 7/10 | 3309 days | 2% |
| Aurelie Otis | 9/10 | 3311 days | 2% |
| Jake Bullin | 10/10 | 3313 days | 2% |
| Lisa | 10/10 | 3314 days | 2% |
| Bina Johansson | 10/10 | 3324 days | 2% |
| Sabrina and Hannes | 8/10 | 3327 days | 2% |
| Rogier Post | 7/10 | 3329 days | 2% |
| Michal Za'heryuk | 8/10 | 3331 days | 2% |
| Karine Dransart | 8/10 | 3335 days | 2% |
| Samuel Michalak | 7/10 | 3338 days | 2% |
| Ben | 7/10 | 3341 days | 2% |
| Julian Gury | 7/10 | 3344 days | 2% |
| Fazeel Ali | 10/10 | 3391 days | 2% |
| Anna | 10/10 | 3545 days | 2% |
| Jan Berendsen | 9/10 | 3549 days | 2% |
| Jorge Anderson | 8/10 | 3549 days | 2% |
| Simon Schatz | 8/10 | 3551 days | 2% |
| Thomas Le Buzulier | 8/10 | 3555 days | 2% |
| Kristina Breitwieser | 8/10 | 3556 days | 2% |
| Magali Schwantke | 8/10 | 3559 days | 2% |
| Laura Schratt | 6/10 | 3562 days | 1% |
| Mathilde Arp | 8/10 | 3562 days | 2% |
| Arnd Kohlen | 6/10 | 3562 days | 1% |
| Laerke Soee | 7/10 | 3563 days | 1% |
| Christian Krause | 9/10 | 3563 days | 2% |
| Mark | 8/10 | 3570 days | 2% |
| Hannes | 10/10 | 3574 days | 2% |
| Nathan Raymond | 10/10 | 3576 days | 2% |
| Rachel Bruce | 5/10 | 3577 days | 1% |
| Sunja Abbe | 9/10 | 3579 days | 2% |
| Kristof | 7/10 | 3581 days | 1% |
| Talissa Missiato | 10/10 | 3582 days | 2% |
| Eloise | 7/10 | 3582 days | 1% |
| Julia Scharbert | 8/10 | 3583 days | 2% |
| Severin Knegsch | 9/10 | 3583 days | 2% |
| Pierre Jouffineau | 9/10 | 3584 days | 2% |
| Floren Hoenschler | 7/10 | 3590 days | 1% |
| Johanna | 7/10 | 3590 days | 1% |
| Natasha Harbinson | 6/10 | 3594 days | 1% |
| Sophie Kalnymsky | 7/10 | 3597 days | 1% |
| Clemence and Pedro | 8/10 | 3598 days | 1% |
| Maxim Motheus | 8/10 | 3600 days | 1% |
| Mijke Boesten | 6/10 | 3601 days | 1% |
| Jan | 6/10 | 3604 days | 1% |
| Cindy Rizzo | 8/10 | 3607 days | 1% |
| Ulli | 10/10 | 3610 days | 1% |
| Dave O'Brien | 10/10 | 3613 days | 1% |
| Annett Kiessling | 7/10 | 3613 days | 1% |
| Chiara | 7/10 | 3615 days | 1% |
| Levi | 8/10 | 3617 days | 1% |
| Martin Baleja | 10/10 | 3618 days | 1% |
| Asborn Damgaard | 9/10 | 3622 days | 1% |
| Leo James | 8/10 | 3622 days | 1% |
| Sophie NIemann | 10/10 | 3623 days | 1% |
| Edwine | 8/10 | 3623 days | 1% |
| Jonathan and Gulsen | 10/10 | 3632 days | 1% |
| Tatiana | 10/10 | 3632 days | 1% |
| Valerie Balcom | 8/10 | 3632 days | 1% |
| Raviv Regev | 8/10 | 3647 days | 1% |
| Monika Dippel | 8/10 | 3650 days | 1% |
| Marc | 6/10 | 3650 days | 1% |
| Christine Slowiak | 8/10 | 3651 days | 1% |
| Justin Kechanski | 6/10 | 3651 days | 1% |
| Judith Goodyear | 7/10 | 3660 days | 1% |
| Hannah Fidora | 8/10 | 3663 days | 1% |
| Sarah Boettcher | 9/10 | 3711 days | 1% |
| Katherine Halliday | 9/10 | 3931 days | 1% |
| Christoph | 8/10 | 3932 days | 1% |
| Katherine Britten | 9/10 | 3934 days | 1% |
| Trevor Wichman | 9/10 | 3975 days | 1% |
| Jan Towers | 10/10 | 4274 days | 0% |
| isabel Zander | 7/10 | 4275 days | 0% |
| Corinne | 8/10 | 4277 days | 0% |
| Martin Sajdok | 5/10 | 4278 days | 0% |
| Camille Bellay | 7/10 | 4278 days | 0% |
| Garry Renton | 7/10 | 4283 days | 0% |
| Paula Renton | 7/10 | 4283 days | 0% |
| Simon Mehlmann | 7/10 | 4284 days | 0% |
| Carolin Siegert | 8/10 | 4284 days | 0% |
| Sarah Beyeler | 10/10 | 4306 days | 0% |
| Kim Lavener | 10/10 | 4306 days | 0% |
| Rosie | 7/10 | 4307 days | 0% |
| Anna Sternberg | 6/10 | 4308 days | 0% |
| Steffen | 9/10 | 4310 days | 0% |
| Nina Helmling | 8/10 | 4310 days | 0% |
| Friederike Kranzin | 7/10 | 4314 days | 0% |
| Guillaume | 6/10 | 4316 days | 0% |
| Roy Matthieu | 7/10 | 4318 days | 0% |
| Cindy Benayoum | 7/10 | 4318 days | 0% |
| Simon Tanguy | 8/10 | 4326 days | 0% |
| David Krasner | 9/10 | 4332 days | 0% |
| Susan | 8/10 | 4332 days | 0% |
| Jesseca Klausch | 6/10 | 4333 days | 0% |
| Vincent Schaeflier | 6/10 | 4333 days | 0% |
| Timothee Serres | 7/10 | 4337 days | 0% |
| Jesse Flynn | 6/10 | 4342 days | 0% |
| Claudia | 10/10 | 4344 days | 0% |
| Stuart Wilson | 8/10 | 4362 days | 0% |
| Marine | 9/10 | 4363 days | 0% |
| Supiot Zudovic | 10/10 | 4654 days | 1% |
| Iban Dupont | 7/10 | 4655 days | 1% |
| Guillaume Boudrand | 8/10 | 4655 days | 1% |
| Rampon | 9/10 | 4659 days | 1% |
| Jirka Sirka | 8/10 | 4660 days | 1% |
| Debiesse | 9/10 | 4660 days | 1% |
| Jitka Zenahlikova | 5/10 | 4664 days | 1% |
| Gale Willcocks | 10/10 | 4665 days | 1% |
| Ken Richardson | 8/10 | 4665 days | 1% |
| Cloarec Guillaume | 9/10 | 4667 days | 1% |
| Kathy Arthurs | 8/10 | 4672 days | 1% |
| Claire | 7/10 | 4672 days | 1% |
| Brendon Furney | 9/10 | 4676 days | 1% |
| Sanchez | 2/10 | 4684 days | 0% |
| Mary Neustroski | 9/10 | 4686 days | 1% |
| Scholler | 10/10 | 4731 days | 1% |
| Nadine and Jan | 8/10 | 4744 days | 1% |
| Frederick Neilsen | 8/10 | 4774 days | 1% |
| Paulmiriamgarry | 10/10 | 4915 days | 1% |
| Numa Brouimet | 7/10 | 5033 days | 1% |
| Virgil Anabel | 9/10 | 5033 days | 1% |
| Melanie Friessen | 6/10 | 5039 days | 1% |
| D van Dongen | 7/10 | 5041 days | 1% |
| David Perry | 8/10 | 5046 days | 1% |
| pamr | 8/10 | 5050 days | 1% |
| M Neuman | 8/10 | 5058 days | 1% |
| A Sorg | 10/10 | 5058 days | 1% |
| ge04jen | 7/10 | 5097 days | 1% |
| hendrik king | 7/10 | 5097 days | 1% |
| jule | 8/10 | 5158 days | 1% |
| Ryan Dorsey | 8/10 | 5400 days | 1% |
| Kathleen Brown | 8/10 | 5401 days | 1% |
| Pete H | 2/10 | 5777 days | 0% |
| hermine Petz | 2/10 | 5790 days | 0% |
| Mike Kirchner | 6/10 | 5792 days | 1% |
| Ann Grandchamp | 10/10 | 5810 days | 1% |
| Holliger | 7/10 | 5813 days | 1% |
| Kane Chain | 6/10 | 5813 days | 1% |
| Glenn Nicholson | 8/10 | 5816 days | 1% |
| sanneb1 | 7/10 | 5843 days | 1% |
| jamesg | 8/10 | 5856 days | 1% |
| Bas van Schagen | 7/10 | 5865 days | 1% |
| Des Longville | 7/10 | 6011 days | 1% |
| VirginiaR | 9/10 | 6094 days | 1% |
| Raewyn | 7/10 | 6099 days | 1% |
| Sally477 | 9/10 | 6103 days | 1% |
| Limor | 9/10 | 6173 days | 1% |
| Hove | 8/10 | 6174 days | 1% |
| Lieke | 8/10 | 6174 days | 1% |
| martin piper | 8/10 | 6178 days | 1% |
| purplekat99 | 10/10 | 6223 days | 1% |
| Patricia | 10/10 | 6223 days | 1% |
| Tiana | 8/10 | 6241 days | 1% |
| Raey | 10/10 | 6299 days | 1% |
| Carmen | 3/10 | 6354 days | 1% |
| Dave | 7/10 | 6361 days | 1% |
| Sheila Haran | 7/10 | 6474 days | 1% |
| Caroline Cole | 4/10 | 6479 days | 1% |
| Wendy | 8/10 | 6486 days | 1% |
| Annette Hurst | 8/10 | 6492 days | 1% |
| Phil Connelly | 7/10 | 6494 days | 1% |
| Andria Davis | 9/10 | 6495 days | 1% |
| Georgina Mulligan | 7/10 | 6495 days | 1% |
| Claire Masling | 8/10 | 6502 days | 1% |
| Christian Schwerdt | 7/10 | 6503 days | 1% |
| Jackie Horwell | 10/10 | 6503 days | 1% |
| Gustavo | 7/10 | 6503 days | 1% |
| Sean Pierce | 5/10 | 6507 days | 1% |
| Roger and Heather Smith | 10/10 | 6507 days | 1% |
| Tobias Rahm | 10/10 | 6507 days | 1% |
| Roman | 6/10 | 6513 days | 1% |
| ranker_851 | 8/10 | 6513 days | 1% |
| Vaclaf | 8/10 | 6513 days | 1% |
| Sebastian Bleck | 7/10 | 6517 days | 1% |
| Emma Dolk | 4/10 | 6518 days | 1% |
| Sheryl | 8/10 | 6539 days | 1% |
| David | 8/10 | 6548 days | 1% |
| Iain | 6/10 | 6549 days | 1% |
| Fred and Tim | 7/10 | 6583 days | 1% |
| George | 9/10 | 6818 days | 1% |
| Matous | 7/10 | 6823 days | 1% |
| clairekidd | 7/10 | 6831 days | 1% |
| Jonas | 3/10 | 6837 days | 1% |
| Stefan | 7/10 | 6862 days | 1% |
| Stefan | 8/10 | 6872 days | 1% |
| Justin | 9/10 | 6872 days | 1% |
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 Bluebridge Cook Strait Ferry experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-1.60% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 days. However the Bluebridge Cook Strait Ferry 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 Bluebridge Cook Strait Ferry experience has been adjusted for 79 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 76 | -1.54% |
| 77 | -1.56% |
| 78 | -1.58% |
| 79 | -1.60% |
| 80 | -1.62% |
| 81 | -1.64% |
| 82 | -1.66% |
| … | … |
Balancing Adjustment
5.91% 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
78%
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.