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 Bluebridge Cook Strait Ferries.
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 Ferries
Valid Reviews
227 Valid Reviews
The Bluebridge Cook Strait Ferries 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 Ferries 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 Ferries 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
73.77%
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 | 109 days | 100% |
| Glenys Everitt | 10/10 | 201 days | 98% |
| Warren | 5/10 | 321 days | 72% |
| Matt | 10/10 | 1052 days | 39% |
| SBlu | 1/10 | 1083 days | 15% |
| James Fuller | 3/10 | 1114 days | 19% |
| Mark | 4/10 | 1144 days | 21% |
| Véronique Laplante | 1/10 | 1144 days | 13% |
| Brian symmes | 1/10 | 1144 days | 13% |
| R. Armstrong | 5/10 | 1175 days | 22% |
| Sandy | 1/10 | 1358 days | 7% |
| Jonathan | 1/10 | 1509 days | 4% |
| PeteR | 3/10 | 1540 days | 5% |
| La Vie | 1/10 | 1723 days | 2% |
| Pauline Kane | 10/10 | 2301 days | 4% |
| Roy Sandbrook | 10/10 | 2454 days | 4% |
| Nickclev | 3/10 | 2485 days | 2% |
| Pepe Huebner | 4/10 | 2908 days | 2% |
| Jennie Tollerton | 8/10 | 2971 days | 3% |
| Phil Baker | 9/10 | 2974 days | 3% |
| Lily Roelofs | 1/10 | 3000 days | 1% |
| Vince Midmore | 1/10 | 3242 days | 1% |
| Francesca Scott | 10/10 | 3251 days | 2% |
| Erna Muller | 9/10 | 3259 days | 2% |
| Flip Hoogeveen | 8/10 | 3259 days | 2% |
| Chaulet | 5/10 | 3262 days | 2% |
| Felix Koehler | 4/10 | 3263 days | 1% |
| Kristina Nunoz | 7/10 | 3263 days | 2% |
| Becky Fox | 7/10 | 3265 days | 2% |
| Emma Millett | 8/10 | 3265 days | 2% |
| Rohzine | 7/10 | 3265 days | 2% |
| P and W Gene | 8/10 | 3266 days | 2% |
| Maaike | 8/10 | 3294 days | 2% |
| T Geelen | 8/10 | 3294 days | 2% |
| Wendy Steer | 8/10 | 3300 days | 2% |
| Marcel Felder | 7/10 | 3304 days | 2% |
| Jonas Gorb | 8/10 | 3308 days | 2% |
| Rahel | 7/10 | 3308 days | 2% |
| Maria Eriksson | 7/10 | 3311 days | 2% |
| Gilbert Baptiste | 8/10 | 3311 days | 2% |
| Emilie Bavard | 7/10 | 3311 days | 2% |
| Josh Bird | 7/10 | 3313 days | 2% |
| Jemima Brown | 7/10 | 3313 days | 2% |
| Aurelie Otis | 9/10 | 3315 days | 2% |
| Jake Bullin | 10/10 | 3317 days | 2% |
| Lisa | 10/10 | 3318 days | 2% |
| Bina Johansson | 10/10 | 3328 days | 2% |
| Sabrina and Hannes | 8/10 | 3331 days | 2% |
| Rogier Post | 7/10 | 3333 days | 2% |
| Michal Za'heryuk | 8/10 | 3335 days | 2% |
| Karine Dransart | 8/10 | 3339 days | 2% |
| Samuel Michalak | 7/10 | 3342 days | 2% |
| Ben | 7/10 | 3345 days | 2% |
| Julian Gury | 7/10 | 3348 days | 2% |
| Fazeel Ali | 10/10 | 3395 days | 2% |
| Anna | 10/10 | 3549 days | 2% |
| Jan Berendsen | 9/10 | 3553 days | 2% |
| Jorge Anderson | 8/10 | 3553 days | 2% |
| Simon Schatz | 8/10 | 3555 days | 2% |
| Thomas Le Buzulier | 8/10 | 3559 days | 2% |
| Kristina Breitwieser | 8/10 | 3560 days | 2% |
| Magali Schwantke | 8/10 | 3563 days | 2% |
| Laura Schratt | 6/10 | 3566 days | 1% |
| Mathilde Arp | 8/10 | 3566 days | 2% |
| Arnd Kohlen | 6/10 | 3566 days | 1% |
| Laerke Soee | 7/10 | 3567 days | 1% |
| Christian Krause | 9/10 | 3567 days | 2% |
| Mark | 8/10 | 3574 days | 2% |
| Hannes | 10/10 | 3578 days | 2% |
| Nathan Raymond | 10/10 | 3580 days | 2% |
| Rachel Bruce | 5/10 | 3581 days | 1% |
| Sunja Abbe | 9/10 | 3583 days | 2% |
| Kristof | 7/10 | 3585 days | 1% |
| Talissa Missiato | 10/10 | 3586 days | 2% |
| Eloise | 7/10 | 3586 days | 1% |
| Julia Scharbert | 8/10 | 3587 days | 2% |
| Severin Knegsch | 9/10 | 3587 days | 2% |
| Pierre Jouffineau | 9/10 | 3588 days | 2% |
| Floren Hoenschler | 7/10 | 3594 days | 1% |
| Johanna | 7/10 | 3594 days | 1% |
| Natasha Harbinson | 6/10 | 3598 days | 1% |
| Sophie Kalnymsky | 7/10 | 3601 days | 1% |
| Clemence and Pedro | 8/10 | 3602 days | 1% |
| Maxim Motheus | 8/10 | 3604 days | 1% |
| Mijke Boesten | 6/10 | 3605 days | 1% |
| Jan | 6/10 | 3608 days | 1% |
| Cindy Rizzo | 8/10 | 3611 days | 1% |
| Ulli | 10/10 | 3614 days | 1% |
| Dave O'Brien | 10/10 | 3617 days | 1% |
| Annett Kiessling | 7/10 | 3617 days | 1% |
| Chiara | 7/10 | 3619 days | 1% |
| Levi | 8/10 | 3621 days | 1% |
| Martin Baleja | 10/10 | 3622 days | 1% |
| Asborn Damgaard | 9/10 | 3626 days | 1% |
| Leo James | 8/10 | 3626 days | 1% |
| Sophie NIemann | 10/10 | 3627 days | 1% |
| Edwine | 8/10 | 3627 days | 1% |
| Jonathan and Gulsen | 10/10 | 3636 days | 1% |
| Tatiana | 10/10 | 3636 days | 1% |
| Valerie Balcom | 8/10 | 3636 days | 1% |
| Raviv Regev | 8/10 | 3651 days | 1% |
| Monika Dippel | 8/10 | 3654 days | 1% |
| Marc | 6/10 | 3654 days | 1% |
| Christine Slowiak | 8/10 | 3655 days | 1% |
| Justin Kechanski | 6/10 | 3655 days | 1% |
| Judith Goodyear | 7/10 | 3664 days | 1% |
| Hannah Fidora | 8/10 | 3667 days | 1% |
| Sarah Boettcher | 9/10 | 3715 days | 1% |
| Katherine Halliday | 9/10 | 3935 days | 1% |
| Christoph | 8/10 | 3936 days | 1% |
| Katherine Britten | 9/10 | 3938 days | 1% |
| Trevor Wichman | 9/10 | 3979 days | 1% |
| Jan Towers | 10/10 | 4278 days | 0% |
| isabel Zander | 7/10 | 4279 days | 0% |
| Corinne | 8/10 | 4281 days | 0% |
| Martin Sajdok | 5/10 | 4282 days | 0% |
| Camille Bellay | 7/10 | 4282 days | 0% |
| Garry Renton | 7/10 | 4287 days | 0% |
| Paula Renton | 7/10 | 4287 days | 0% |
| Simon Mehlmann | 7/10 | 4288 days | 0% |
| Carolin Siegert | 8/10 | 4288 days | 0% |
| Sarah Beyeler | 10/10 | 4310 days | 0% |
| Kim Lavener | 10/10 | 4310 days | 0% |
| Rosie | 7/10 | 4311 days | 0% |
| Anna Sternberg | 6/10 | 4312 days | 0% |
| Steffen | 9/10 | 4314 days | 0% |
| Nina Helmling | 8/10 | 4314 days | 0% |
| Friederike Kranzin | 7/10 | 4318 days | 0% |
| Guillaume | 6/10 | 4320 days | 0% |
| Roy Matthieu | 7/10 | 4322 days | 0% |
| Cindy Benayoum | 7/10 | 4322 days | 0% |
| Simon Tanguy | 8/10 | 4330 days | 0% |
| David Krasner | 9/10 | 4336 days | 0% |
| Susan | 8/10 | 4336 days | 0% |
| Jesseca Klausch | 6/10 | 4337 days | 0% |
| Vincent Schaeflier | 6/10 | 4337 days | 0% |
| Timothee Serres | 7/10 | 4341 days | 0% |
| Jesse Flynn | 6/10 | 4346 days | 0% |
| Claudia | 10/10 | 4348 days | 0% |
| Stuart Wilson | 8/10 | 4366 days | 0% |
| Marine | 9/10 | 4367 days | 0% |
| Supiot Zudovic | 10/10 | 4658 days | 1% |
| Iban Dupont | 7/10 | 4659 days | 1% |
| Guillaume Boudrand | 8/10 | 4659 days | 1% |
| Rampon | 9/10 | 4663 days | 1% |
| Jirka Sirka | 8/10 | 4664 days | 1% |
| Debiesse | 9/10 | 4664 days | 1% |
| Jitka Zenahlikova | 5/10 | 4668 days | 1% |
| Gale Willcocks | 10/10 | 4669 days | 1% |
| Ken Richardson | 8/10 | 4669 days | 1% |
| Cloarec Guillaume | 9/10 | 4671 days | 1% |
| Kathy Arthurs | 8/10 | 4676 days | 1% |
| Claire | 7/10 | 4676 days | 1% |
| Brendon Furney | 9/10 | 4680 days | 1% |
| Sanchez | 2/10 | 4688 days | 0% |
| Mary Neustroski | 9/10 | 4690 days | 1% |
| Scholler | 10/10 | 4735 days | 1% |
| Nadine and Jan | 8/10 | 4748 days | 1% |
| Frederick Neilsen | 8/10 | 4778 days | 1% |
| Paulmiriamgarry | 10/10 | 4919 days | 1% |
| Numa Brouimet | 7/10 | 5037 days | 1% |
| Virgil Anabel | 9/10 | 5037 days | 1% |
| Melanie Friessen | 6/10 | 5043 days | 1% |
| D van Dongen | 7/10 | 5045 days | 1% |
| David Perry | 8/10 | 5050 days | 1% |
| pamr | 8/10 | 5054 days | 1% |
| M Neuman | 8/10 | 5062 days | 1% |
| A Sorg | 10/10 | 5062 days | 1% |
| ge04jen | 7/10 | 5101 days | 1% |
| hendrik king | 7/10 | 5101 days | 1% |
| jule | 8/10 | 5162 days | 1% |
| Ryan Dorsey | 8/10 | 5404 days | 1% |
| Kathleen Brown | 8/10 | 5405 days | 1% |
| Pete H | 2/10 | 5781 days | 0% |
| hermine Petz | 2/10 | 5794 days | 0% |
| Mike Kirchner | 6/10 | 5796 days | 1% |
| Ann Grandchamp | 10/10 | 5814 days | 1% |
| Holliger | 7/10 | 5817 days | 1% |
| Kane Chain | 6/10 | 5817 days | 1% |
| Glenn Nicholson | 8/10 | 5820 days | 1% |
| sanneb1 | 7/10 | 5847 days | 1% |
| jamesg | 8/10 | 5860 days | 1% |
| Bas van Schagen | 7/10 | 5869 days | 1% |
| Des Longville | 7/10 | 6015 days | 1% |
| VirginiaR | 9/10 | 6098 days | 1% |
| Raewyn | 7/10 | 6103 days | 1% |
| Sally477 | 9/10 | 6106 days | 1% |
| Limor | 9/10 | 6177 days | 1% |
| Hove | 8/10 | 6178 days | 1% |
| Lieke | 8/10 | 6178 days | 1% |
| martin piper | 8/10 | 6181 days | 1% |
| purplekat99 | 10/10 | 6227 days | 1% |
| Patricia | 10/10 | 6227 days | 1% |
| Tiana | 8/10 | 6245 days | 1% |
| Raey | 10/10 | 6303 days | 1% |
| Carmen | 3/10 | 6358 days | 1% |
| Dave | 7/10 | 6365 days | 1% |
| Sheila Haran | 7/10 | 6478 days | 1% |
| Caroline Cole | 4/10 | 6483 days | 1% |
| Wendy | 8/10 | 6490 days | 1% |
| Annette Hurst | 8/10 | 6496 days | 1% |
| Phil Connelly | 7/10 | 6498 days | 1% |
| Andria Davis | 9/10 | 6499 days | 1% |
| Georgina Mulligan | 7/10 | 6499 days | 1% |
| Claire Masling | 8/10 | 6506 days | 1% |
| Christian Schwerdt | 7/10 | 6507 days | 1% |
| Jackie Horwell | 10/10 | 6507 days | 1% |
| Gustavo | 7/10 | 6507 days | 1% |
| Sean Pierce | 5/10 | 6511 days | 1% |
| Roger and Heather Smith | 10/10 | 6511 days | 1% |
| Tobias Rahm | 10/10 | 6511 days | 1% |
| Roman | 6/10 | 6517 days | 1% |
| ranker_851 | 8/10 | 6517 days | 1% |
| Vaclaf | 8/10 | 6517 days | 1% |
| Sebastian Bleck | 7/10 | 6521 days | 1% |
| Emma Dolk | 4/10 | 6522 days | 1% |
| Sheryl | 8/10 | 6542 days | 1% |
| David | 8/10 | 6552 days | 1% |
| Iain | 6/10 | 6553 days | 1% |
| Fred and Tim | 7/10 | 6587 days | 1% |
| George | 9/10 | 6822 days | 1% |
| Matous | 7/10 | 6827 days | 1% |
| clairekidd | 7/10 | 6835 days | 1% |
| Jonas | 3/10 | 6841 days | 1% |
| Stefan | 7/10 | 6866 days | 1% |
| Stefan | 8/10 | 6876 days | 1% |
| Justin | 9/10 | 6876 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 Ferries experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-1.68% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 days. However the Bluebridge Cook Strait Ferries 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 Ferries experience has been adjusted for 83 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 80 | -1.62% |
| 81 | -1.64% |
| 82 | -1.66% |
| 83 | -1.68% |
| 84 | -1.70% |
| 85 | -1.72% |
| 86 | -1.74% |
| … | … |
Balancing Adjustment
5.92% 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.