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
73.56%
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 | 96 days | 100% |
| Glenys Everitt | 10/10 | 188 days | 99% |
| Warren | 5/10 | 308 days | 72% |
| Matt | 10/10 | 1039 days | 40% |
| SBlu | 1/10 | 1070 days | 15% |
| James Fuller | 3/10 | 1101 days | 19% |
| Mark | 4/10 | 1131 days | 21% |
| Véronique Laplante | 1/10 | 1131 days | 13% |
| Brian symmes | 1/10 | 1131 days | 13% |
| R. Armstrong | 5/10 | 1162 days | 23% |
| Sandy | 1/10 | 1345 days | 7% |
| Jonathan | 1/10 | 1496 days | 5% |
| PeteR | 3/10 | 1527 days | 5% |
| La Vie | 1/10 | 1710 days | 2% |
| Pauline Kane | 10/10 | 2288 days | 4% |
| Roy Sandbrook | 10/10 | 2441 days | 4% |
| Nickclev | 3/10 | 2472 days | 2% |
| Pepe Huebner | 4/10 | 2895 days | 2% |
| Jennie Tollerton | 8/10 | 2958 days | 3% |
| Phil Baker | 9/10 | 2961 days | 3% |
| Lily Roelofs | 1/10 | 2987 days | 1% |
| Vince Midmore | 1/10 | 3229 days | 1% |
| Francesca Scott | 10/10 | 3238 days | 2% |
| Erna Muller | 9/10 | 3246 days | 2% |
| Flip Hoogeveen | 8/10 | 3246 days | 2% |
| Chaulet | 5/10 | 3249 days | 2% |
| Felix Koehler | 4/10 | 3250 days | 1% |
| Kristina Nunoz | 7/10 | 3250 days | 2% |
| Becky Fox | 7/10 | 3252 days | 2% |
| Emma Millett | 8/10 | 3252 days | 2% |
| Rohzine | 7/10 | 3252 days | 2% |
| P and W Gene | 8/10 | 3253 days | 2% |
| Maaike | 8/10 | 3281 days | 2% |
| T Geelen | 8/10 | 3281 days | 2% |
| Wendy Steer | 8/10 | 3287 days | 2% |
| Marcel Felder | 7/10 | 3291 days | 2% |
| Jonas Gorb | 8/10 | 3295 days | 2% |
| Rahel | 7/10 | 3295 days | 2% |
| Maria Eriksson | 7/10 | 3298 days | 2% |
| Gilbert Baptiste | 8/10 | 3298 days | 2% |
| Emilie Bavard | 7/10 | 3298 days | 2% |
| Josh Bird | 7/10 | 3300 days | 2% |
| Jemima Brown | 7/10 | 3300 days | 2% |
| Aurelie Otis | 9/10 | 3302 days | 2% |
| Jake Bullin | 10/10 | 3304 days | 2% |
| Lisa | 10/10 | 3305 days | 2% |
| Bina Johansson | 10/10 | 3315 days | 2% |
| Sabrina and Hannes | 8/10 | 3318 days | 2% |
| Rogier Post | 7/10 | 3320 days | 2% |
| Michal Za'heryuk | 8/10 | 3322 days | 2% |
| Karine Dransart | 8/10 | 3326 days | 2% |
| Samuel Michalak | 7/10 | 3329 days | 2% |
| Ben | 7/10 | 3332 days | 2% |
| Julian Gury | 7/10 | 3335 days | 2% |
| Fazeel Ali | 10/10 | 3382 days | 2% |
| Anna | 10/10 | 3536 days | 2% |
| Jan Berendsen | 9/10 | 3540 days | 2% |
| Jorge Anderson | 8/10 | 3540 days | 2% |
| Simon Schatz | 8/10 | 3542 days | 2% |
| Thomas Le Buzulier | 8/10 | 3546 days | 2% |
| Kristina Breitwieser | 8/10 | 3547 days | 2% |
| Magali Schwantke | 8/10 | 3550 days | 2% |
| Laura Schratt | 6/10 | 3553 days | 1% |
| Mathilde Arp | 8/10 | 3553 days | 2% |
| Arnd Kohlen | 6/10 | 3553 days | 1% |
| Laerke Soee | 7/10 | 3554 days | 1% |
| Christian Krause | 9/10 | 3554 days | 2% |
| Mark | 8/10 | 3561 days | 2% |
| Hannes | 10/10 | 3565 days | 2% |
| Nathan Raymond | 10/10 | 3567 days | 2% |
| Rachel Bruce | 5/10 | 3568 days | 1% |
| Sunja Abbe | 9/10 | 3570 days | 2% |
| Kristof | 7/10 | 3572 days | 1% |
| Talissa Missiato | 10/10 | 3573 days | 2% |
| Eloise | 7/10 | 3573 days | 1% |
| Julia Scharbert | 8/10 | 3574 days | 2% |
| Severin Knegsch | 9/10 | 3574 days | 2% |
| Pierre Jouffineau | 9/10 | 3575 days | 2% |
| Floren Hoenschler | 7/10 | 3581 days | 1% |
| Johanna | 7/10 | 3581 days | 1% |
| Natasha Harbinson | 6/10 | 3585 days | 1% |
| Sophie Kalnymsky | 7/10 | 3588 days | 1% |
| Clemence and Pedro | 8/10 | 3589 days | 1% |
| Maxim Motheus | 8/10 | 3591 days | 1% |
| Mijke Boesten | 6/10 | 3592 days | 1% |
| Jan | 6/10 | 3595 days | 1% |
| Cindy Rizzo | 8/10 | 3598 days | 1% |
| Ulli | 10/10 | 3601 days | 1% |
| Dave O'Brien | 10/10 | 3604 days | 1% |
| Annett Kiessling | 7/10 | 3604 days | 1% |
| Chiara | 7/10 | 3606 days | 1% |
| Levi | 8/10 | 3608 days | 1% |
| Martin Baleja | 10/10 | 3609 days | 1% |
| Asborn Damgaard | 9/10 | 3613 days | 1% |
| Leo James | 8/10 | 3613 days | 1% |
| Sophie NIemann | 10/10 | 3614 days | 1% |
| Edwine | 8/10 | 3614 days | 1% |
| Jonathan and Gulsen | 10/10 | 3623 days | 1% |
| Tatiana | 10/10 | 3623 days | 1% |
| Valerie Balcom | 8/10 | 3623 days | 1% |
| Raviv Regev | 8/10 | 3638 days | 1% |
| Monika Dippel | 8/10 | 3641 days | 1% |
| Marc | 6/10 | 3641 days | 1% |
| Christine Slowiak | 8/10 | 3642 days | 1% |
| Justin Kechanski | 6/10 | 3642 days | 1% |
| Judith Goodyear | 7/10 | 3651 days | 1% |
| Hannah Fidora | 8/10 | 3654 days | 1% |
| Sarah Boettcher | 9/10 | 3702 days | 1% |
| Katherine Halliday | 9/10 | 3922 days | 1% |
| Christoph | 8/10 | 3923 days | 1% |
| Katherine Britten | 9/10 | 3925 days | 1% |
| Trevor Wichman | 9/10 | 3966 days | 1% |
| Jan Towers | 10/10 | 4265 days | 0% |
| isabel Zander | 7/10 | 4266 days | 0% |
| Corinne | 8/10 | 4268 days | 0% |
| Martin Sajdok | 5/10 | 4269 days | 0% |
| Camille Bellay | 7/10 | 4269 days | 0% |
| Garry Renton | 7/10 | 4274 days | 0% |
| Paula Renton | 7/10 | 4274 days | 0% |
| Simon Mehlmann | 7/10 | 4275 days | 0% |
| Carolin Siegert | 8/10 | 4275 days | 0% |
| Sarah Beyeler | 10/10 | 4297 days | 0% |
| Kim Lavener | 10/10 | 4297 days | 0% |
| Rosie | 7/10 | 4298 days | 0% |
| Anna Sternberg | 6/10 | 4299 days | 0% |
| Steffen | 9/10 | 4301 days | 0% |
| Nina Helmling | 8/10 | 4301 days | 0% |
| Friederike Kranzin | 7/10 | 4305 days | 0% |
| Guillaume | 6/10 | 4307 days | 0% |
| Roy Matthieu | 7/10 | 4309 days | 0% |
| Cindy Benayoum | 7/10 | 4309 days | 0% |
| Simon Tanguy | 8/10 | 4317 days | 0% |
| David Krasner | 9/10 | 4323 days | 0% |
| Susan | 8/10 | 4323 days | 0% |
| Jesseca Klausch | 6/10 | 4324 days | 0% |
| Vincent Schaeflier | 6/10 | 4324 days | 0% |
| Timothee Serres | 7/10 | 4328 days | 0% |
| Jesse Flynn | 6/10 | 4333 days | 0% |
| Claudia | 10/10 | 4335 days | 0% |
| Stuart Wilson | 8/10 | 4353 days | 0% |
| Marine | 9/10 | 4354 days | 0% |
| Supiot Zudovic | 10/10 | 4645 days | 1% |
| Iban Dupont | 7/10 | 4646 days | 1% |
| Guillaume Boudrand | 8/10 | 4646 days | 1% |
| Rampon | 9/10 | 4650 days | 1% |
| Jirka Sirka | 8/10 | 4651 days | 1% |
| Debiesse | 9/10 | 4651 days | 1% |
| Jitka Zenahlikova | 5/10 | 4655 days | 1% |
| Gale Willcocks | 10/10 | 4656 days | 1% |
| Ken Richardson | 8/10 | 4656 days | 1% |
| Cloarec Guillaume | 9/10 | 4658 days | 1% |
| Kathy Arthurs | 8/10 | 4663 days | 1% |
| Claire | 7/10 | 4663 days | 1% |
| Brendon Furney | 9/10 | 4667 days | 1% |
| Sanchez | 2/10 | 4675 days | 0% |
| Mary Neustroski | 9/10 | 4677 days | 1% |
| Scholler | 10/10 | 4722 days | 1% |
| Nadine and Jan | 8/10 | 4735 days | 1% |
| Frederick Neilsen | 8/10 | 4765 days | 1% |
| Paulmiriamgarry | 10/10 | 4906 days | 1% |
| Numa Brouimet | 7/10 | 5024 days | 1% |
| Virgil Anabel | 9/10 | 5024 days | 1% |
| Melanie Friessen | 6/10 | 5030 days | 1% |
| D van Dongen | 7/10 | 5032 days | 1% |
| David Perry | 8/10 | 5037 days | 1% |
| pamr | 8/10 | 5041 days | 1% |
| M Neuman | 8/10 | 5049 days | 1% |
| A Sorg | 10/10 | 5049 days | 1% |
| ge04jen | 7/10 | 5088 days | 1% |
| hendrik king | 7/10 | 5088 days | 1% |
| jule | 8/10 | 5149 days | 1% |
| Ryan Dorsey | 8/10 | 5391 days | 1% |
| Kathleen Brown | 8/10 | 5392 days | 1% |
| Pete H | 2/10 | 5768 days | 0% |
| hermine Petz | 2/10 | 5781 days | 0% |
| Mike Kirchner | 6/10 | 5783 days | 1% |
| Ann Grandchamp | 10/10 | 5801 days | 1% |
| Holliger | 7/10 | 5804 days | 1% |
| Kane Chain | 6/10 | 5804 days | 1% |
| Glenn Nicholson | 8/10 | 5807 days | 1% |
| sanneb1 | 7/10 | 5834 days | 1% |
| jamesg | 8/10 | 5847 days | 1% |
| Bas van Schagen | 7/10 | 5856 days | 1% |
| Des Longville | 7/10 | 6002 days | 1% |
| VirginiaR | 9/10 | 6085 days | 1% |
| Raewyn | 7/10 | 6090 days | 1% |
| Sally477 | 9/10 | 6094 days | 1% |
| Limor | 9/10 | 6164 days | 1% |
| Hove | 8/10 | 6165 days | 1% |
| Lieke | 8/10 | 6165 days | 1% |
| martin piper | 8/10 | 6168 days | 1% |
| purplekat99 | 10/10 | 6214 days | 1% |
| Patricia | 10/10 | 6214 days | 1% |
| Tiana | 8/10 | 6232 days | 1% |
| Raey | 10/10 | 6290 days | 1% |
| Carmen | 3/10 | 6345 days | 0% |
| Dave | 7/10 | 6352 days | 1% |
| Sheila Haran | 7/10 | 6465 days | 1% |
| Caroline Cole | 4/10 | 6470 days | 1% |
| Wendy | 8/10 | 6477 days | 1% |
| Annette Hurst | 8/10 | 6483 days | 1% |
| Phil Connelly | 7/10 | 6485 days | 1% |
| Andria Davis | 9/10 | 6486 days | 1% |
| Georgina Mulligan | 7/10 | 6486 days | 1% |
| Claire Masling | 8/10 | 6493 days | 1% |
| Christian Schwerdt | 7/10 | 6494 days | 1% |
| Jackie Horwell | 10/10 | 6494 days | 1% |
| Gustavo | 7/10 | 6494 days | 1% |
| Sean Pierce | 5/10 | 6498 days | 1% |
| Roger and Heather Smith | 10/10 | 6498 days | 1% |
| Tobias Rahm | 10/10 | 6498 days | 1% |
| Roman | 6/10 | 6504 days | 1% |
| ranker_851 | 8/10 | 6504 days | 1% |
| Vaclaf | 8/10 | 6504 days | 1% |
| Sebastian Bleck | 7/10 | 6508 days | 1% |
| Emma Dolk | 4/10 | 6509 days | 1% |
| Sheryl | 8/10 | 6530 days | 1% |
| David | 8/10 | 6539 days | 1% |
| Iain | 6/10 | 6540 days | 1% |
| Fred and Tim | 7/10 | 6574 days | 1% |
| George | 9/10 | 6809 days | 1% |
| Matous | 7/10 | 6814 days | 1% |
| clairekidd | 7/10 | 6822 days | 1% |
| Jonas | 3/10 | 6828 days | 0% |
| Stefan | 7/10 | 6853 days | 1% |
| Stefan | 8/10 | 6863 days | 1% |
| Justin | 9/10 | 6863 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
-1.43% 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 70 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 67 | -1.36% |
| 68 | -1.38% |
| 69 | -1.41% |
| 70 | -1.43% |
| 71 | -1.45% |
| 72 | -1.47% |
| 73 | -1.49% |
| … | … |
Balancing Adjustment
5.89% 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.