G'day, 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
73.69%
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 | 104 days | 100% |
| Glenys Everitt | 10/10 | 196 days | 98% |
| Warren | 5/10 | 316 days | 72% |
| Matt | 10/10 | 1047 days | 40% |
| SBlu | 1/10 | 1078 days | 15% |
| James Fuller | 3/10 | 1109 days | 19% |
| Mark | 4/10 | 1139 days | 21% |
| Véronique Laplante | 1/10 | 1139 days | 13% |
| Brian symmes | 1/10 | 1139 days | 13% |
| R. Armstrong | 5/10 | 1170 days | 23% |
| Sandy | 1/10 | 1353 days | 7% |
| Jonathan | 1/10 | 1504 days | 4% |
| PeteR | 3/10 | 1535 days | 5% |
| La Vie | 1/10 | 1718 days | 2% |
| Pauline Kane | 10/10 | 2296 days | 4% |
| Roy Sandbrook | 10/10 | 2449 days | 4% |
| Nickclev | 3/10 | 2480 days | 2% |
| Pepe Huebner | 4/10 | 2903 days | 2% |
| Jennie Tollerton | 8/10 | 2966 days | 3% |
| Phil Baker | 9/10 | 2969 days | 3% |
| Lily Roelofs | 1/10 | 2995 days | 1% |
| Vince Midmore | 1/10 | 3237 days | 1% |
| Francesca Scott | 10/10 | 3246 days | 2% |
| Erna Muller | 9/10 | 3254 days | 2% |
| Flip Hoogeveen | 8/10 | 3254 days | 2% |
| Chaulet | 5/10 | 3257 days | 2% |
| Felix Koehler | 4/10 | 3258 days | 1% |
| Kristina Nunoz | 7/10 | 3258 days | 2% |
| Becky Fox | 7/10 | 3260 days | 2% |
| Emma Millett | 8/10 | 3260 days | 2% |
| Rohzine | 7/10 | 3260 days | 2% |
| P and W Gene | 8/10 | 3261 days | 2% |
| Maaike | 8/10 | 3289 days | 2% |
| T Geelen | 8/10 | 3289 days | 2% |
| Wendy Steer | 8/10 | 3295 days | 2% |
| Marcel Felder | 7/10 | 3299 days | 2% |
| Jonas Gorb | 8/10 | 3303 days | 2% |
| Rahel | 7/10 | 3303 days | 2% |
| Maria Eriksson | 7/10 | 3306 days | 2% |
| Gilbert Baptiste | 8/10 | 3306 days | 2% |
| Emilie Bavard | 7/10 | 3306 days | 2% |
| Josh Bird | 7/10 | 3308 days | 2% |
| Jemima Brown | 7/10 | 3308 days | 2% |
| Aurelie Otis | 9/10 | 3310 days | 2% |
| Jake Bullin | 10/10 | 3312 days | 2% |
| Lisa | 10/10 | 3313 days | 2% |
| Bina Johansson | 10/10 | 3323 days | 2% |
| Sabrina and Hannes | 8/10 | 3326 days | 2% |
| Rogier Post | 7/10 | 3328 days | 2% |
| Michal Za'heryuk | 8/10 | 3330 days | 2% |
| Karine Dransart | 8/10 | 3334 days | 2% |
| Samuel Michalak | 7/10 | 3337 days | 2% |
| Ben | 7/10 | 3340 days | 2% |
| Julian Gury | 7/10 | 3343 days | 2% |
| Fazeel Ali | 10/10 | 3390 days | 2% |
| Anna | 10/10 | 3544 days | 2% |
| Jan Berendsen | 9/10 | 3548 days | 2% |
| Jorge Anderson | 8/10 | 3548 days | 2% |
| Simon Schatz | 8/10 | 3550 days | 2% |
| Thomas Le Buzulier | 8/10 | 3554 days | 2% |
| Kristina Breitwieser | 8/10 | 3555 days | 2% |
| Magali Schwantke | 8/10 | 3558 days | 2% |
| Laura Schratt | 6/10 | 3561 days | 1% |
| Mathilde Arp | 8/10 | 3561 days | 2% |
| Arnd Kohlen | 6/10 | 3561 days | 1% |
| Laerke Soee | 7/10 | 3562 days | 1% |
| Christian Krause | 9/10 | 3562 days | 2% |
| Mark | 8/10 | 3569 days | 2% |
| Hannes | 10/10 | 3573 days | 2% |
| Nathan Raymond | 10/10 | 3575 days | 2% |
| Rachel Bruce | 5/10 | 3576 days | 1% |
| Sunja Abbe | 9/10 | 3578 days | 2% |
| Kristof | 7/10 | 3580 days | 1% |
| Talissa Missiato | 10/10 | 3581 days | 2% |
| Eloise | 7/10 | 3581 days | 1% |
| Julia Scharbert | 8/10 | 3582 days | 2% |
| Severin Knegsch | 9/10 | 3582 days | 2% |
| Pierre Jouffineau | 9/10 | 3583 days | 2% |
| Floren Hoenschler | 7/10 | 3589 days | 1% |
| Johanna | 7/10 | 3589 days | 1% |
| Natasha Harbinson | 6/10 | 3593 days | 1% |
| Sophie Kalnymsky | 7/10 | 3596 days | 1% |
| Clemence and Pedro | 8/10 | 3597 days | 1% |
| Maxim Motheus | 8/10 | 3599 days | 1% |
| Mijke Boesten | 6/10 | 3600 days | 1% |
| Jan | 6/10 | 3603 days | 1% |
| Cindy Rizzo | 8/10 | 3606 days | 1% |
| Ulli | 10/10 | 3609 days | 1% |
| Dave O'Brien | 10/10 | 3612 days | 1% |
| Annett Kiessling | 7/10 | 3612 days | 1% |
| Chiara | 7/10 | 3614 days | 1% |
| Levi | 8/10 | 3616 days | 1% |
| Martin Baleja | 10/10 | 3617 days | 1% |
| Asborn Damgaard | 9/10 | 3621 days | 1% |
| Leo James | 8/10 | 3621 days | 1% |
| Sophie NIemann | 10/10 | 3622 days | 1% |
| Edwine | 8/10 | 3622 days | 1% |
| Jonathan and Gulsen | 10/10 | 3631 days | 1% |
| Tatiana | 10/10 | 3631 days | 1% |
| Valerie Balcom | 8/10 | 3631 days | 1% |
| Raviv Regev | 8/10 | 3646 days | 1% |
| Monika Dippel | 8/10 | 3649 days | 1% |
| Marc | 6/10 | 3649 days | 1% |
| Christine Slowiak | 8/10 | 3650 days | 1% |
| Justin Kechanski | 6/10 | 3650 days | 1% |
| Judith Goodyear | 7/10 | 3659 days | 1% |
| Hannah Fidora | 8/10 | 3662 days | 1% |
| Sarah Boettcher | 9/10 | 3710 days | 1% |
| Katherine Halliday | 9/10 | 3930 days | 1% |
| Christoph | 8/10 | 3931 days | 1% |
| Katherine Britten | 9/10 | 3933 days | 1% |
| Trevor Wichman | 9/10 | 3974 days | 1% |
| Jan Towers | 10/10 | 4273 days | 0% |
| isabel Zander | 7/10 | 4274 days | 0% |
| Corinne | 8/10 | 4276 days | 0% |
| Martin Sajdok | 5/10 | 4277 days | 0% |
| Camille Bellay | 7/10 | 4277 days | 0% |
| Garry Renton | 7/10 | 4282 days | 0% |
| Paula Renton | 7/10 | 4282 days | 0% |
| Simon Mehlmann | 7/10 | 4283 days | 0% |
| Carolin Siegert | 8/10 | 4283 days | 0% |
| Sarah Beyeler | 10/10 | 4305 days | 0% |
| Kim Lavener | 10/10 | 4305 days | 0% |
| Rosie | 7/10 | 4306 days | 0% |
| Anna Sternberg | 6/10 | 4307 days | 0% |
| Steffen | 9/10 | 4309 days | 0% |
| Nina Helmling | 8/10 | 4309 days | 0% |
| Friederike Kranzin | 7/10 | 4313 days | 0% |
| Guillaume | 6/10 | 4315 days | 0% |
| Roy Matthieu | 7/10 | 4317 days | 0% |
| Cindy Benayoum | 7/10 | 4317 days | 0% |
| Simon Tanguy | 8/10 | 4325 days | 0% |
| David Krasner | 9/10 | 4331 days | 0% |
| Susan | 8/10 | 4331 days | 0% |
| Jesseca Klausch | 6/10 | 4332 days | 0% |
| Vincent Schaeflier | 6/10 | 4332 days | 0% |
| Timothee Serres | 7/10 | 4336 days | 0% |
| Jesse Flynn | 6/10 | 4341 days | 0% |
| Claudia | 10/10 | 4343 days | 0% |
| Stuart Wilson | 8/10 | 4361 days | 0% |
| Marine | 9/10 | 4362 days | 0% |
| Supiot Zudovic | 10/10 | 4653 days | 1% |
| Iban Dupont | 7/10 | 4654 days | 1% |
| Guillaume Boudrand | 8/10 | 4654 days | 1% |
| Rampon | 9/10 | 4658 days | 1% |
| Jirka Sirka | 8/10 | 4659 days | 1% |
| Debiesse | 9/10 | 4659 days | 1% |
| Jitka Zenahlikova | 5/10 | 4663 days | 1% |
| Gale Willcocks | 10/10 | 4664 days | 1% |
| Ken Richardson | 8/10 | 4664 days | 1% |
| Cloarec Guillaume | 9/10 | 4666 days | 1% |
| Kathy Arthurs | 8/10 | 4671 days | 1% |
| Claire | 7/10 | 4671 days | 1% |
| Brendon Furney | 9/10 | 4675 days | 1% |
| Sanchez | 2/10 | 4683 days | 0% |
| Mary Neustroski | 9/10 | 4685 days | 1% |
| Scholler | 10/10 | 4730 days | 1% |
| Nadine and Jan | 8/10 | 4743 days | 1% |
| Frederick Neilsen | 8/10 | 4773 days | 1% |
| Paulmiriamgarry | 10/10 | 4914 days | 1% |
| Numa Brouimet | 7/10 | 5032 days | 1% |
| Virgil Anabel | 9/10 | 5032 days | 1% |
| Melanie Friessen | 6/10 | 5038 days | 1% |
| D van Dongen | 7/10 | 5040 days | 1% |
| David Perry | 8/10 | 5045 days | 1% |
| pamr | 8/10 | 5049 days | 1% |
| M Neuman | 8/10 | 5057 days | 1% |
| A Sorg | 10/10 | 5057 days | 1% |
| ge04jen | 7/10 | 5096 days | 1% |
| hendrik king | 7/10 | 5096 days | 1% |
| jule | 8/10 | 5157 days | 1% |
| Ryan Dorsey | 8/10 | 5399 days | 1% |
| Kathleen Brown | 8/10 | 5400 days | 1% |
| Pete H | 2/10 | 5776 days | 0% |
| hermine Petz | 2/10 | 5789 days | 0% |
| Mike Kirchner | 6/10 | 5791 days | 1% |
| Ann Grandchamp | 10/10 | 5809 days | 1% |
| Holliger | 7/10 | 5812 days | 1% |
| Kane Chain | 6/10 | 5812 days | 1% |
| Glenn Nicholson | 8/10 | 5815 days | 1% |
| sanneb1 | 7/10 | 5842 days | 1% |
| jamesg | 8/10 | 5855 days | 1% |
| Bas van Schagen | 7/10 | 5864 days | 1% |
| Des Longville | 7/10 | 6010 days | 1% |
| VirginiaR | 9/10 | 6093 days | 1% |
| Raewyn | 7/10 | 6098 days | 1% |
| Sally477 | 9/10 | 6102 days | 1% |
| Limor | 9/10 | 6172 days | 1% |
| Hove | 8/10 | 6173 days | 1% |
| Lieke | 8/10 | 6173 days | 1% |
| martin piper | 8/10 | 6177 days | 1% |
| purplekat99 | 10/10 | 6222 days | 1% |
| Patricia | 10/10 | 6222 days | 1% |
| Tiana | 8/10 | 6240 days | 1% |
| Raey | 10/10 | 6298 days | 1% |
| Carmen | 3/10 | 6353 days | 1% |
| Dave | 7/10 | 6360 days | 1% |
| Sheila Haran | 7/10 | 6473 days | 1% |
| Caroline Cole | 4/10 | 6478 days | 1% |
| Wendy | 8/10 | 6485 days | 1% |
| Annette Hurst | 8/10 | 6491 days | 1% |
| Phil Connelly | 7/10 | 6493 days | 1% |
| Andria Davis | 9/10 | 6494 days | 1% |
| Georgina Mulligan | 7/10 | 6494 days | 1% |
| Claire Masling | 8/10 | 6501 days | 1% |
| Christian Schwerdt | 7/10 | 6502 days | 1% |
| Jackie Horwell | 10/10 | 6502 days | 1% |
| Gustavo | 7/10 | 6502 days | 1% |
| Sean Pierce | 5/10 | 6506 days | 1% |
| Roger and Heather Smith | 10/10 | 6506 days | 1% |
| Tobias Rahm | 10/10 | 6506 days | 1% |
| Roman | 6/10 | 6512 days | 1% |
| ranker_851 | 8/10 | 6512 days | 1% |
| Vaclaf | 8/10 | 6512 days | 1% |
| Sebastian Bleck | 7/10 | 6516 days | 1% |
| Emma Dolk | 4/10 | 6517 days | 1% |
| Sheryl | 8/10 | 6538 days | 1% |
| David | 8/10 | 6547 days | 1% |
| Iain | 6/10 | 6548 days | 1% |
| Fred and Tim | 7/10 | 6582 days | 1% |
| George | 9/10 | 6817 days | 1% |
| Matous | 7/10 | 6822 days | 1% |
| clairekidd | 7/10 | 6830 days | 1% |
| Jonas | 3/10 | 6836 days | 1% |
| Stefan | 7/10 | 6861 days | 1% |
| Stefan | 8/10 | 6871 days | 1% |
| Justin | 9/10 | 6871 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
-1.58% 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 78 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 75 | -1.52% |
| 76 | -1.54% |
| 77 | -1.56% |
| 78 | -1.58% |
| 79 | -1.60% |
| 80 | -1.62% |
| 81 | -1.64% |
| … | … |
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.