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
228 Valid Reviews
The Bluebridge Cook Strait Ferries experience has a total of 233 reviews. There are 228 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 228 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 37 |
|
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% |
74.47% Average
The raw data average (mean) for all the Bluebridge Cook Strait Ferries valid reviews is 74.47% and is based on 228 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 228 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
81.04%
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 |
|---|---|---|---|
| Anton Grey-Epiha | 10/10 | 139 days | 100% |
| Bonnie Henderson - Waho | 10/10 | 381 days | 93% |
| Glenys Everitt | 10/10 | 473 days | 88% |
| Warren | 5/10 | 593 days | 62% |
| Matt | 10/10 | 1324 days | 19% |
| SBlu | 1/10 | 1355 days | 7% |
| James Fuller | 3/10 | 1386 days | 9% |
| Mark | 4/10 | 1416 days | 9% |
| Véronique Laplante | 1/10 | 1416 days | 6% |
| Brian symmes | 1/10 | 1416 days | 6% |
| R. Armstrong | 5/10 | 1447 days | 10% |
| Sandy | 1/10 | 1630 days | 3% |
| Jonathan | 1/10 | 1781 days | 2% |
| PeteR | 3/10 | 1812 days | 3% |
| La Vie | 1/10 | 1995 days | 2% |
| Pauline Kane | 10/10 | 2573 days | 3% |
| Roy Sandbrook | 10/10 | 2726 days | 3% |
| Nickclev | 3/10 | 2757 days | 1% |
| Pepe Huebner | 4/10 | 3181 days | 1% |
| Jennie Tollerton | 8/10 | 3243 days | 2% |
| Phil Baker | 9/10 | 3246 days | 2% |
| Lily Roelofs | 1/10 | 3273 days | 1% |
| Vince Midmore | 1/10 | 3515 days | 0% |
| Francesca Scott | 10/10 | 3523 days | 1% |
| Erna Muller | 9/10 | 3531 days | 1% |
| Flip Hoogeveen | 8/10 | 3531 days | 1% |
| Chaulet | 5/10 | 3534 days | 1% |
| Felix Koehler | 4/10 | 3535 days | 1% |
| Kristina Nunoz | 7/10 | 3535 days | 1% |
| Becky Fox | 7/10 | 3537 days | 1% |
| Emma Millett | 8/10 | 3537 days | 1% |
| Rohzine | 7/10 | 3537 days | 1% |
| P and W Gene | 8/10 | 3538 days | 1% |
| Maaike | 8/10 | 3566 days | 1% |
| T Geelen | 8/10 | 3566 days | 1% |
| Wendy Steer | 8/10 | 3572 days | 1% |
| Marcel Felder | 7/10 | 3576 days | 1% |
| Jonas Gorb | 8/10 | 3580 days | 1% |
| Rahel | 7/10 | 3580 days | 1% |
| Maria Eriksson | 7/10 | 3583 days | 1% |
| Gilbert Baptiste | 8/10 | 3583 days | 1% |
| Emilie Bavard | 7/10 | 3583 days | 1% |
| Josh Bird | 7/10 | 3585 days | 1% |
| Jemima Brown | 7/10 | 3585 days | 1% |
| Aurelie Otis | 9/10 | 3587 days | 1% |
| Jake Bullin | 10/10 | 3589 days | 1% |
| Lisa | 10/10 | 3590 days | 1% |
| Bina Johansson | 10/10 | 3600 days | 1% |
| Sabrina and Hannes | 8/10 | 3603 days | 1% |
| Rogier Post | 7/10 | 3605 days | 1% |
| Michal Za'heryuk | 8/10 | 3607 days | 1% |
| Karine Dransart | 8/10 | 3611 days | 1% |
| Samuel Michalak | 7/10 | 3614 days | 1% |
| Ben | 7/10 | 3617 days | 1% |
| Julian Gury | 7/10 | 3620 days | 1% |
| Fazeel Ali | 10/10 | 3668 days | 1% |
| Anna | 10/10 | 3821 days | 1% |
| Jan Berendsen | 9/10 | 3825 days | 1% |
| Jorge Anderson | 8/10 | 3825 days | 1% |
| Simon Schatz | 8/10 | 3827 days | 1% |
| Thomas Le Buzulier | 8/10 | 3831 days | 1% |
| Kristina Breitwieser | 8/10 | 3832 days | 1% |
| Magali Schwantke | 8/10 | 3835 days | 1% |
| Laura Schratt | 6/10 | 3838 days | 1% |
| Mathilde Arp | 8/10 | 3838 days | 1% |
| Arnd Kohlen | 6/10 | 3838 days | 1% |
| Laerke Soee | 7/10 | 3839 days | 1% |
| Christian Krause | 9/10 | 3839 days | 1% |
| Mark | 8/10 | 3846 days | 1% |
| Hannes | 10/10 | 3850 days | 1% |
| Nathan Raymond | 10/10 | 3852 days | 1% |
| Rachel Bruce | 5/10 | 3853 days | 1% |
| Sunja Abbe | 9/10 | 3855 days | 1% |
| Kristof | 7/10 | 3857 days | 1% |
| Talissa Missiato | 10/10 | 3858 days | 1% |
| Eloise | 7/10 | 3858 days | 1% |
| Julia Scharbert | 8/10 | 3859 days | 1% |
| Severin Knegsch | 9/10 | 3859 days | 1% |
| Pierre Jouffineau | 9/10 | 3860 days | 1% |
| Floren Hoenschler | 7/10 | 3866 days | 1% |
| Johanna | 7/10 | 3866 days | 1% |
| Natasha Harbinson | 6/10 | 3870 days | 1% |
| Sophie Kalnymsky | 7/10 | 3873 days | 1% |
| Clemence and Pedro | 8/10 | 3874 days | 1% |
| Maxim Motheus | 8/10 | 3876 days | 1% |
| Mijke Boesten | 6/10 | 3877 days | 1% |
| Jan | 6/10 | 3880 days | 1% |
| Cindy Rizzo | 8/10 | 3883 days | 1% |
| Ulli | 10/10 | 3886 days | 1% |
| Dave O'Brien | 10/10 | 3889 days | 1% |
| Annett Kiessling | 7/10 | 3889 days | 1% |
| Chiara | 7/10 | 3891 days | 1% |
| Levi | 8/10 | 3893 days | 1% |
| Martin Baleja | 10/10 | 3894 days | 1% |
| Asborn Damgaard | 9/10 | 3898 days | 1% |
| Leo James | 8/10 | 3898 days | 1% |
| Sophie NIemann | 10/10 | 3899 days | 1% |
| Edwine | 8/10 | 3899 days | 1% |
| Jonathan and Gulsen | 10/10 | 3908 days | 1% |
| Tatiana | 10/10 | 3908 days | 1% |
| Valerie Balcom | 8/10 | 3908 days | 1% |
| Raviv Regev | 8/10 | 3923 days | 1% |
| Monika Dippel | 8/10 | 3926 days | 1% |
| Marc | 6/10 | 3926 days | 1% |
| Christine Slowiak | 8/10 | 3927 days | 1% |
| Justin Kechanski | 6/10 | 3927 days | 1% |
| Judith Goodyear | 7/10 | 3936 days | 1% |
| Hannah Fidora | 8/10 | 3939 days | 1% |
| Sarah Boettcher | 9/10 | 3987 days | 1% |
| Katherine Halliday | 9/10 | 4207 days | 0% |
| Christoph | 8/10 | 4208 days | 0% |
| Katherine Britten | 9/10 | 4210 days | 0% |
| Trevor Wichman | 9/10 | 4251 days | 0% |
| Jan Towers | 10/10 | 4550 days | 1% |
| isabel Zander | 7/10 | 4551 days | 1% |
| Corinne | 8/10 | 4553 days | 1% |
| Martin Sajdok | 5/10 | 4554 days | 1% |
| Camille Bellay | 7/10 | 4554 days | 1% |
| Garry Renton | 7/10 | 4559 days | 1% |
| Paula Renton | 7/10 | 4559 days | 1% |
| Simon Mehlmann | 7/10 | 4560 days | 1% |
| Carolin Siegert | 8/10 | 4560 days | 1% |
| Sarah Beyeler | 10/10 | 4582 days | 1% |
| Kim Lavener | 10/10 | 4582 days | 1% |
| Rosie | 7/10 | 4583 days | 1% |
| Anna Sternberg | 6/10 | 4584 days | 1% |
| Steffen | 9/10 | 4586 days | 1% |
| Nina Helmling | 8/10 | 4586 days | 1% |
| Friederike Kranzin | 7/10 | 4590 days | 1% |
| Guillaume | 6/10 | 4592 days | 1% |
| Roy Matthieu | 7/10 | 4594 days | 1% |
| Cindy Benayoum | 7/10 | 4594 days | 1% |
| Simon Tanguy | 8/10 | 4602 days | 1% |
| David Krasner | 9/10 | 4608 days | 1% |
| Susan | 8/10 | 4608 days | 1% |
| Jesseca Klausch | 6/10 | 4609 days | 1% |
| Vincent Schaeflier | 6/10 | 4609 days | 1% |
| Timothee Serres | 7/10 | 4613 days | 1% |
| Jesse Flynn | 6/10 | 4618 days | 1% |
| Claudia | 10/10 | 4620 days | 1% |
| Stuart Wilson | 8/10 | 4638 days | 1% |
| Marine | 9/10 | 4639 days | 1% |
| Supiot Zudovic | 10/10 | 4930 days | 1% |
| Iban Dupont | 7/10 | 4931 days | 1% |
| Guillaume Boudrand | 8/10 | 4931 days | 1% |
| Rampon | 9/10 | 4935 days | 1% |
| Jirka Sirka | 8/10 | 4936 days | 1% |
| Debiesse | 9/10 | 4936 days | 1% |
| Jitka Zenahlikova | 5/10 | 4940 days | 1% |
| Gale Willcocks | 10/10 | 4941 days | 1% |
| Ken Richardson | 8/10 | 4941 days | 1% |
| Cloarec Guillaume | 9/10 | 4943 days | 1% |
| Kathy Arthurs | 8/10 | 4948 days | 1% |
| Claire | 7/10 | 4948 days | 1% |
| Brendon Furney | 9/10 | 4952 days | 1% |
| Sanchez | 2/10 | 4960 days | 0% |
| Mary Neustroski | 9/10 | 4962 days | 1% |
| Scholler | 10/10 | 5007 days | 1% |
| Nadine and Jan | 8/10 | 5020 days | 1% |
| Frederick Neilsen | 8/10 | 5050 days | 1% |
| Paulmiriamgarry | 10/10 | 5191 days | 1% |
| Numa Brouimet | 7/10 | 5309 days | 1% |
| Virgil Anabel | 9/10 | 5309 days | 1% |
| Melanie Friessen | 6/10 | 5315 days | 1% |
| D van Dongen | 7/10 | 5317 days | 1% |
| David Perry | 8/10 | 5322 days | 1% |
| pamr | 8/10 | 5326 days | 1% |
| M Neuman | 8/10 | 5334 days | 1% |
| A Sorg | 10/10 | 5334 days | 1% |
| ge04jen | 7/10 | 5373 days | 1% |
| hendrik king | 7/10 | 5373 days | 1% |
| jule | 8/10 | 5434 days | 1% |
| Ryan Dorsey | 8/10 | 5676 days | 1% |
| Kathleen Brown | 8/10 | 5677 days | 1% |
| Pete H | 2/10 | 6053 days | 0% |
| hermine Petz | 2/10 | 6066 days | 0% |
| Mike Kirchner | 6/10 | 6068 days | 1% |
| Ann Grandchamp | 10/10 | 6086 days | 1% |
| Holliger | 7/10 | 6089 days | 1% |
| Kane Chain | 6/10 | 6089 days | 1% |
| Glenn Nicholson | 8/10 | 6092 days | 1% |
| sanneb1 | 7/10 | 6119 days | 1% |
| jamesg | 8/10 | 6132 days | 1% |
| Bas van Schagen | 7/10 | 6141 days | 1% |
| Des Longville | 7/10 | 6287 days | 1% |
| VirginiaR | 9/10 | 6370 days | 1% |
| Raewyn | 7/10 | 6375 days | 1% |
| Sally477 | 9/10 | 6379 days | 1% |
| Limor | 9/10 | 6449 days | 1% |
| Hove | 8/10 | 6450 days | 1% |
| Lieke | 8/10 | 6450 days | 1% |
| martin piper | 8/10 | 6454 days | 1% |
| purplekat99 | 10/10 | 6499 days | 1% |
| Patricia | 10/10 | 6499 days | 1% |
| Tiana | 8/10 | 6517 days | 1% |
| Raey | 10/10 | 6576 days | 1% |
| Carmen | 3/10 | 6630 days | 0% |
| Dave | 7/10 | 6637 days | 1% |
| Sheila Haran | 7/10 | 6750 days | 1% |
| Caroline Cole | 4/10 | 6755 days | 0% |
| Wendy | 8/10 | 6762 days | 1% |
| Annette Hurst | 8/10 | 6768 days | 1% |
| Phil Connelly | 7/10 | 6770 days | 1% |
| Andria Davis | 9/10 | 6771 days | 1% |
| Georgina Mulligan | 7/10 | 6771 days | 1% |
| Claire Masling | 8/10 | 6778 days | 1% |
| Christian Schwerdt | 7/10 | 6779 days | 1% |
| Jackie Horwell | 10/10 | 6779 days | 1% |
| Gustavo | 7/10 | 6779 days | 1% |
| Sean Pierce | 5/10 | 6783 days | 1% |
| Roger and Heather Smith | 10/10 | 6783 days | 1% |
| Tobias Rahm | 10/10 | 6783 days | 1% |
| Roman | 6/10 | 6789 days | 1% |
| ranker_851 | 8/10 | 6789 days | 1% |
| Vaclaf | 8/10 | 6789 days | 1% |
| Sebastian Bleck | 7/10 | 6793 days | 1% |
| Emma Dolk | 4/10 | 6794 days | 0% |
| Sheryl | 8/10 | 6815 days | 1% |
| David | 8/10 | 6824 days | 1% |
| Iain | 6/10 | 6825 days | 1% |
| Fred and Tim | 7/10 | 6859 days | 1% |
| George | 9/10 | 7094 days | 1% |
| Matous | 7/10 | 7099 days | 1% |
| clairekidd | 7/10 | 7107 days | 1% |
| Jonas | 3/10 | 7113 days | 0% |
| Stefan | 7/10 | 7138 days | 1% |
| Stefan | 8/10 | 7148 days | 1% |
| Justin | 9/10 | 7148 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
-1.78% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 77 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 120 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 117 | -1.73% |
| 118 | -1.75% |
| 119 | -1.76% |
| 120 | -1.78% |
| 121 | -1.79% |
| 122 | -1.81% |
| 123 | -1.82% |
| … | … |
Balancing Adjustment
3.21% 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
83%
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.