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 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
75.14%
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 | 192 days | 100% |
| Glenys Everitt | 10/10 | 284 days | 97% |
| Warren | 5/10 | 404 days | 71% |
| Matt | 10/10 | 1135 days | 33% |
| SBlu | 1/10 | 1166 days | 12% |
| James Fuller | 3/10 | 1197 days | 15% |
| Mark | 4/10 | 1227 days | 17% |
| Véronique Laplante | 1/10 | 1227 days | 11% |
| Brian symmes | 1/10 | 1227 days | 11% |
| R. Armstrong | 5/10 | 1258 days | 18% |
| Sandy | 1/10 | 1441 days | 6% |
| Jonathan | 1/10 | 1592 days | 3% |
| PeteR | 3/10 | 1623 days | 4% |
| La Vie | 1/10 | 1806 days | 2% |
| Pauline Kane | 10/10 | 2384 days | 4% |
| Roy Sandbrook | 10/10 | 2537 days | 4% |
| Nickclev | 3/10 | 2568 days | 2% |
| Pepe Huebner | 4/10 | 2992 days | 2% |
| Jennie Tollerton | 8/10 | 3054 days | 3% |
| Phil Baker | 9/10 | 3057 days | 3% |
| Lily Roelofs | 1/10 | 3084 days | 1% |
| Vince Midmore | 1/10 | 3326 days | 1% |
| Francesca Scott | 10/10 | 3334 days | 2% |
| Erna Muller | 9/10 | 3342 days | 2% |
| Flip Hoogeveen | 8/10 | 3342 days | 2% |
| Chaulet | 5/10 | 3345 days | 2% |
| Felix Koehler | 4/10 | 3346 days | 1% |
| Kristina Nunoz | 7/10 | 3346 days | 2% |
| Becky Fox | 7/10 | 3348 days | 2% |
| Emma Millett | 8/10 | 3348 days | 2% |
| Rohzine | 7/10 | 3348 days | 2% |
| P and W Gene | 8/10 | 3349 days | 2% |
| Maaike | 8/10 | 3377 days | 2% |
| T Geelen | 8/10 | 3377 days | 2% |
| Wendy Steer | 8/10 | 3383 days | 2% |
| Marcel Felder | 7/10 | 3387 days | 2% |
| Jonas Gorb | 8/10 | 3391 days | 2% |
| Rahel | 7/10 | 3391 days | 2% |
| Maria Eriksson | 7/10 | 3394 days | 2% |
| Gilbert Baptiste | 8/10 | 3394 days | 2% |
| Emilie Bavard | 7/10 | 3394 days | 2% |
| Josh Bird | 7/10 | 3396 days | 2% |
| Jemima Brown | 7/10 | 3396 days | 2% |
| Aurelie Otis | 9/10 | 3398 days | 2% |
| Jake Bullin | 10/10 | 3400 days | 2% |
| Lisa | 10/10 | 3401 days | 2% |
| Bina Johansson | 10/10 | 3411 days | 2% |
| Sabrina and Hannes | 8/10 | 3414 days | 2% |
| Rogier Post | 7/10 | 3416 days | 2% |
| Michal Za'heryuk | 8/10 | 3418 days | 2% |
| Karine Dransart | 8/10 | 3422 days | 2% |
| Samuel Michalak | 7/10 | 3425 days | 2% |
| Ben | 7/10 | 3428 days | 2% |
| Julian Gury | 7/10 | 3431 days | 2% |
| Fazeel Ali | 10/10 | 3479 days | 2% |
| Anna | 10/10 | 3632 days | 1% |
| Jan Berendsen | 9/10 | 3636 days | 1% |
| Jorge Anderson | 8/10 | 3636 days | 1% |
| Simon Schatz | 8/10 | 3638 days | 1% |
| Thomas Le Buzulier | 8/10 | 3642 days | 1% |
| Kristina Breitwieser | 8/10 | 3643 days | 1% |
| Magali Schwantke | 8/10 | 3646 days | 1% |
| Laura Schratt | 6/10 | 3649 days | 1% |
| Mathilde Arp | 8/10 | 3649 days | 1% |
| Arnd Kohlen | 6/10 | 3649 days | 1% |
| Laerke Soee | 7/10 | 3650 days | 1% |
| Christian Krause | 9/10 | 3650 days | 1% |
| Mark | 8/10 | 3657 days | 1% |
| Hannes | 10/10 | 3661 days | 1% |
| Nathan Raymond | 10/10 | 3663 days | 1% |
| Rachel Bruce | 5/10 | 3664 days | 1% |
| Sunja Abbe | 9/10 | 3666 days | 1% |
| Kristof | 7/10 | 3668 days | 1% |
| Talissa Missiato | 10/10 | 3669 days | 1% |
| Eloise | 7/10 | 3669 days | 1% |
| Julia Scharbert | 8/10 | 3670 days | 1% |
| Severin Knegsch | 9/10 | 3670 days | 1% |
| Pierre Jouffineau | 9/10 | 3671 days | 1% |
| Floren Hoenschler | 7/10 | 3677 days | 1% |
| Johanna | 7/10 | 3677 days | 1% |
| Natasha Harbinson | 6/10 | 3681 days | 1% |
| Sophie Kalnymsky | 7/10 | 3684 days | 1% |
| Clemence and Pedro | 8/10 | 3685 days | 1% |
| Maxim Motheus | 8/10 | 3687 days | 1% |
| Mijke Boesten | 6/10 | 3688 days | 1% |
| Jan | 6/10 | 3691 days | 1% |
| Cindy Rizzo | 8/10 | 3694 days | 1% |
| Ulli | 10/10 | 3697 days | 1% |
| Dave O'Brien | 10/10 | 3700 days | 1% |
| Annett Kiessling | 7/10 | 3700 days | 1% |
| Chiara | 7/10 | 3702 days | 1% |
| Levi | 8/10 | 3704 days | 1% |
| Martin Baleja | 10/10 | 3705 days | 1% |
| Asborn Damgaard | 9/10 | 3709 days | 1% |
| Leo James | 8/10 | 3709 days | 1% |
| Sophie NIemann | 10/10 | 3710 days | 1% |
| Edwine | 8/10 | 3710 days | 1% |
| Jonathan and Gulsen | 10/10 | 3719 days | 1% |
| Tatiana | 10/10 | 3719 days | 1% |
| Valerie Balcom | 8/10 | 3719 days | 1% |
| Raviv Regev | 8/10 | 3734 days | 1% |
| Monika Dippel | 8/10 | 3737 days | 1% |
| Marc | 6/10 | 3737 days | 1% |
| Christine Slowiak | 8/10 | 3738 days | 1% |
| Justin Kechanski | 6/10 | 3738 days | 1% |
| Judith Goodyear | 7/10 | 3747 days | 1% |
| Hannah Fidora | 8/10 | 3750 days | 1% |
| Sarah Boettcher | 9/10 | 3798 days | 1% |
| Katherine Halliday | 9/10 | 4018 days | 1% |
| Christoph | 8/10 | 4019 days | 1% |
| Katherine Britten | 9/10 | 4021 days | 1% |
| Trevor Wichman | 9/10 | 4062 days | 1% |
| Jan Towers | 10/10 | 4361 days | 0% |
| isabel Zander | 7/10 | 4362 days | 0% |
| Corinne | 8/10 | 4364 days | 0% |
| Martin Sajdok | 5/10 | 4365 days | 0% |
| Camille Bellay | 7/10 | 4365 days | 0% |
| Garry Renton | 7/10 | 4370 days | 0% |
| Paula Renton | 7/10 | 4370 days | 0% |
| Simon Mehlmann | 7/10 | 4371 days | 0% |
| Carolin Siegert | 8/10 | 4371 days | 0% |
| Sarah Beyeler | 10/10 | 4393 days | 1% |
| Kim Lavener | 10/10 | 4393 days | 1% |
| Rosie | 7/10 | 4394 days | 1% |
| Anna Sternberg | 6/10 | 4395 days | 1% |
| Steffen | 9/10 | 4397 days | 1% |
| Nina Helmling | 8/10 | 4397 days | 1% |
| Friederike Kranzin | 7/10 | 4401 days | 1% |
| Guillaume | 6/10 | 4403 days | 1% |
| Roy Matthieu | 7/10 | 4405 days | 1% |
| Cindy Benayoum | 7/10 | 4405 days | 1% |
| Simon Tanguy | 8/10 | 4413 days | 1% |
| David Krasner | 9/10 | 4419 days | 1% |
| Susan | 8/10 | 4419 days | 1% |
| Jesseca Klausch | 6/10 | 4420 days | 1% |
| Vincent Schaeflier | 6/10 | 4420 days | 1% |
| Timothee Serres | 7/10 | 4424 days | 1% |
| Jesse Flynn | 6/10 | 4429 days | 1% |
| Claudia | 10/10 | 4431 days | 1% |
| Stuart Wilson | 8/10 | 4449 days | 1% |
| Marine | 9/10 | 4450 days | 1% |
| Supiot Zudovic | 10/10 | 4741 days | 1% |
| Iban Dupont | 7/10 | 4742 days | 1% |
| Guillaume Boudrand | 8/10 | 4742 days | 1% |
| Rampon | 9/10 | 4746 days | 1% |
| Jirka Sirka | 8/10 | 4747 days | 1% |
| Debiesse | 9/10 | 4747 days | 1% |
| Jitka Zenahlikova | 5/10 | 4751 days | 1% |
| Gale Willcocks | 10/10 | 4752 days | 1% |
| Ken Richardson | 8/10 | 4752 days | 1% |
| Cloarec Guillaume | 9/10 | 4754 days | 1% |
| Kathy Arthurs | 8/10 | 4759 days | 1% |
| Claire | 7/10 | 4759 days | 1% |
| Brendon Furney | 9/10 | 4763 days | 1% |
| Sanchez | 2/10 | 4771 days | 0% |
| Mary Neustroski | 9/10 | 4773 days | 1% |
| Scholler | 10/10 | 4818 days | 1% |
| Nadine and Jan | 8/10 | 4831 days | 1% |
| Frederick Neilsen | 8/10 | 4861 days | 1% |
| Paulmiriamgarry | 10/10 | 5002 days | 1% |
| Numa Brouimet | 7/10 | 5120 days | 1% |
| Virgil Anabel | 9/10 | 5120 days | 1% |
| Melanie Friessen | 6/10 | 5126 days | 1% |
| D van Dongen | 7/10 | 5128 days | 1% |
| David Perry | 8/10 | 5133 days | 1% |
| pamr | 8/10 | 5137 days | 1% |
| M Neuman | 8/10 | 5145 days | 1% |
| A Sorg | 10/10 | 5145 days | 1% |
| ge04jen | 7/10 | 5184 days | 1% |
| hendrik king | 7/10 | 5184 days | 1% |
| jule | 8/10 | 5245 days | 1% |
| Ryan Dorsey | 8/10 | 5487 days | 1% |
| Kathleen Brown | 8/10 | 5488 days | 1% |
| Pete H | 2/10 | 5864 days | 0% |
| hermine Petz | 2/10 | 5877 days | 0% |
| Mike Kirchner | 6/10 | 5879 days | 1% |
| Ann Grandchamp | 10/10 | 5897 days | 1% |
| Holliger | 7/10 | 5900 days | 1% |
| Kane Chain | 6/10 | 5900 days | 1% |
| Glenn Nicholson | 8/10 | 5903 days | 1% |
| sanneb1 | 7/10 | 5930 days | 1% |
| jamesg | 8/10 | 5943 days | 1% |
| Bas van Schagen | 7/10 | 5952 days | 1% |
| Des Longville | 7/10 | 6098 days | 1% |
| VirginiaR | 9/10 | 6181 days | 1% |
| Raewyn | 7/10 | 6186 days | 1% |
| Sally477 | 9/10 | 6190 days | 1% |
| Limor | 9/10 | 6260 days | 1% |
| Hove | 8/10 | 6261 days | 1% |
| Lieke | 8/10 | 6261 days | 1% |
| martin piper | 8/10 | 6265 days | 1% |
| purplekat99 | 10/10 | 6310 days | 1% |
| Patricia | 10/10 | 6311 days | 1% |
| Tiana | 8/10 | 6329 days | 1% |
| Raey | 10/10 | 6387 days | 1% |
| Carmen | 3/10 | 6441 days | 1% |
| Dave | 7/10 | 6449 days | 1% |
| Sheila Haran | 7/10 | 6561 days | 1% |
| Caroline Cole | 4/10 | 6566 days | 1% |
| Wendy | 8/10 | 6573 days | 1% |
| Annette Hurst | 8/10 | 6579 days | 1% |
| Phil Connelly | 7/10 | 6581 days | 1% |
| Andria Davis | 9/10 | 6582 days | 1% |
| Georgina Mulligan | 7/10 | 6582 days | 1% |
| Claire Masling | 8/10 | 6589 days | 1% |
| Christian Schwerdt | 7/10 | 6590 days | 1% |
| Jackie Horwell | 10/10 | 6590 days | 1% |
| Gustavo | 7/10 | 6590 days | 1% |
| Sean Pierce | 5/10 | 6594 days | 1% |
| Roger and Heather Smith | 10/10 | 6594 days | 1% |
| Tobias Rahm | 10/10 | 6594 days | 1% |
| Roman | 6/10 | 6600 days | 1% |
| ranker_851 | 8/10 | 6600 days | 1% |
| Vaclaf | 8/10 | 6600 days | 1% |
| Sebastian Bleck | 7/10 | 6604 days | 1% |
| Emma Dolk | 4/10 | 6605 days | 1% |
| Sheryl | 8/10 | 6626 days | 1% |
| David | 8/10 | 6635 days | 1% |
| Iain | 6/10 | 6636 days | 1% |
| Fred and Tim | 7/10 | 6670 days | 1% |
| George | 9/10 | 6905 days | 1% |
| Matous | 7/10 | 6910 days | 1% |
| clairekidd | 7/10 | 6918 days | 1% |
| Jonas | 3/10 | 6924 days | 1% |
| Stefan | 7/10 | 6949 days | 1% |
| Stefan | 8/10 | 6959 days | 1% |
| Justin | 9/10 | 6959 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
-3.34% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 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 166 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 163 | -3.28% |
| 164 | -3.30% |
| 165 | -3.32% |
| 166 | -3.34% |
| 167 | -3.36% |
| 168 | -3.38% |
| 169 | -3.40% |
| … | … |
Balancing Adjustment
6.06% 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.