Kia ora, 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
74.74%
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 | 171 days | 100% |
| Glenys Everitt | 10/10 | 263 days | 98% |
| Warren | 5/10 | 383 days | 71% |
| Matt | 10/10 | 1114 days | 34% |
| SBlu | 1/10 | 1145 days | 13% |
| James Fuller | 3/10 | 1176 days | 16% |
| Mark | 4/10 | 1206 days | 18% |
| Véronique Laplante | 1/10 | 1206 days | 11% |
| Brian symmes | 1/10 | 1206 days | 11% |
| R. Armstrong | 5/10 | 1237 days | 19% |
| Sandy | 1/10 | 1420 days | 6% |
| Jonathan | 1/10 | 1571 days | 4% |
| PeteR | 3/10 | 1602 days | 4% |
| La Vie | 1/10 | 1785 days | 2% |
| Pauline Kane | 10/10 | 2363 days | 4% |
| Roy Sandbrook | 10/10 | 2516 days | 4% |
| Nickclev | 3/10 | 2547 days | 2% |
| Pepe Huebner | 4/10 | 2971 days | 2% |
| Jennie Tollerton | 8/10 | 3033 days | 3% |
| Phil Baker | 9/10 | 3036 days | 3% |
| Lily Roelofs | 1/10 | 3063 days | 1% |
| Vince Midmore | 1/10 | 3305 days | 1% |
| Francesca Scott | 10/10 | 3313 days | 2% |
| Erna Muller | 9/10 | 3321 days | 2% |
| Flip Hoogeveen | 8/10 | 3321 days | 2% |
| Chaulet | 5/10 | 3324 days | 2% |
| Felix Koehler | 4/10 | 3325 days | 1% |
| Kristina Nunoz | 7/10 | 3325 days | 2% |
| Becky Fox | 7/10 | 3327 days | 2% |
| Emma Millett | 8/10 | 3327 days | 2% |
| Rohzine | 7/10 | 3327 days | 2% |
| P and W Gene | 8/10 | 3328 days | 2% |
| Maaike | 8/10 | 3356 days | 2% |
| T Geelen | 8/10 | 3356 days | 2% |
| Wendy Steer | 8/10 | 3362 days | 2% |
| Marcel Felder | 7/10 | 3366 days | 2% |
| Jonas Gorb | 8/10 | 3370 days | 2% |
| Rahel | 7/10 | 3370 days | 2% |
| Maria Eriksson | 7/10 | 3373 days | 2% |
| Gilbert Baptiste | 8/10 | 3373 days | 2% |
| Emilie Bavard | 7/10 | 3373 days | 2% |
| Josh Bird | 7/10 | 3375 days | 2% |
| Jemima Brown | 7/10 | 3375 days | 2% |
| Aurelie Otis | 9/10 | 3377 days | 2% |
| Jake Bullin | 10/10 | 3379 days | 2% |
| Lisa | 10/10 | 3380 days | 2% |
| Bina Johansson | 10/10 | 3390 days | 2% |
| Sabrina and Hannes | 8/10 | 3393 days | 2% |
| Rogier Post | 7/10 | 3395 days | 2% |
| Michal Za'heryuk | 8/10 | 3397 days | 2% |
| Karine Dransart | 8/10 | 3401 days | 2% |
| Samuel Michalak | 7/10 | 3404 days | 2% |
| Ben | 7/10 | 3407 days | 2% |
| Julian Gury | 7/10 | 3410 days | 2% |
| Fazeel Ali | 10/10 | 3458 days | 2% |
| Anna | 10/10 | 3611 days | 2% |
| Jan Berendsen | 9/10 | 3615 days | 1% |
| Jorge Anderson | 8/10 | 3615 days | 1% |
| Simon Schatz | 8/10 | 3617 days | 1% |
| Thomas Le Buzulier | 8/10 | 3621 days | 1% |
| Kristina Breitwieser | 8/10 | 3622 days | 1% |
| Magali Schwantke | 8/10 | 3625 days | 1% |
| Laura Schratt | 6/10 | 3628 days | 1% |
| Mathilde Arp | 8/10 | 3628 days | 1% |
| Arnd Kohlen | 6/10 | 3628 days | 1% |
| Laerke Soee | 7/10 | 3629 days | 1% |
| Christian Krause | 9/10 | 3629 days | 1% |
| Mark | 8/10 | 3636 days | 1% |
| Hannes | 10/10 | 3640 days | 1% |
| Nathan Raymond | 10/10 | 3642 days | 1% |
| Rachel Bruce | 5/10 | 3643 days | 1% |
| Sunja Abbe | 9/10 | 3645 days | 1% |
| Kristof | 7/10 | 3647 days | 1% |
| Talissa Missiato | 10/10 | 3648 days | 1% |
| Eloise | 7/10 | 3648 days | 1% |
| Julia Scharbert | 8/10 | 3649 days | 1% |
| Severin Knegsch | 9/10 | 3649 days | 1% |
| Pierre Jouffineau | 9/10 | 3650 days | 1% |
| Floren Hoenschler | 7/10 | 3656 days | 1% |
| Johanna | 7/10 | 3656 days | 1% |
| Natasha Harbinson | 6/10 | 3660 days | 1% |
| Sophie Kalnymsky | 7/10 | 3663 days | 1% |
| Clemence and Pedro | 8/10 | 3664 days | 1% |
| Maxim Motheus | 8/10 | 3666 days | 1% |
| Mijke Boesten | 6/10 | 3667 days | 1% |
| Jan | 6/10 | 3670 days | 1% |
| Cindy Rizzo | 8/10 | 3673 days | 1% |
| Ulli | 10/10 | 3676 days | 1% |
| Dave O'Brien | 10/10 | 3679 days | 1% |
| Annett Kiessling | 7/10 | 3679 days | 1% |
| Chiara | 7/10 | 3681 days | 1% |
| Levi | 8/10 | 3683 days | 1% |
| Martin Baleja | 10/10 | 3684 days | 1% |
| Asborn Damgaard | 9/10 | 3688 days | 1% |
| Leo James | 8/10 | 3688 days | 1% |
| Sophie NIemann | 10/10 | 3689 days | 1% |
| Edwine | 8/10 | 3689 days | 1% |
| Jonathan and Gulsen | 10/10 | 3698 days | 1% |
| Tatiana | 10/10 | 3698 days | 1% |
| Valerie Balcom | 8/10 | 3698 days | 1% |
| Raviv Regev | 8/10 | 3713 days | 1% |
| Monika Dippel | 8/10 | 3716 days | 1% |
| Marc | 6/10 | 3716 days | 1% |
| Christine Slowiak | 8/10 | 3717 days | 1% |
| Justin Kechanski | 6/10 | 3717 days | 1% |
| Judith Goodyear | 7/10 | 3726 days | 1% |
| Hannah Fidora | 8/10 | 3729 days | 1% |
| Sarah Boettcher | 9/10 | 3777 days | 1% |
| Katherine Halliday | 9/10 | 3997 days | 1% |
| Christoph | 8/10 | 3998 days | 1% |
| Katherine Britten | 9/10 | 4000 days | 1% |
| Trevor Wichman | 9/10 | 4041 days | 1% |
| Jan Towers | 10/10 | 4340 days | 0% |
| isabel Zander | 7/10 | 4341 days | 0% |
| Corinne | 8/10 | 4343 days | 0% |
| Martin Sajdok | 5/10 | 4344 days | 0% |
| Camille Bellay | 7/10 | 4344 days | 0% |
| Garry Renton | 7/10 | 4349 days | 0% |
| Paula Renton | 7/10 | 4349 days | 0% |
| Simon Mehlmann | 7/10 | 4350 days | 0% |
| Carolin Siegert | 8/10 | 4350 days | 0% |
| Sarah Beyeler | 10/10 | 4372 days | 0% |
| Kim Lavener | 10/10 | 4372 days | 0% |
| Rosie | 7/10 | 4373 days | 0% |
| Anna Sternberg | 6/10 | 4374 days | 0% |
| Steffen | 9/10 | 4376 days | 0% |
| Nina Helmling | 8/10 | 4376 days | 0% |
| Friederike Kranzin | 7/10 | 4380 days | 1% |
| Guillaume | 6/10 | 4382 days | 1% |
| Roy Matthieu | 7/10 | 4384 days | 1% |
| Cindy Benayoum | 7/10 | 4384 days | 1% |
| Simon Tanguy | 8/10 | 4392 days | 1% |
| David Krasner | 9/10 | 4398 days | 1% |
| Susan | 8/10 | 4398 days | 1% |
| Jesseca Klausch | 6/10 | 4399 days | 1% |
| Vincent Schaeflier | 6/10 | 4399 days | 1% |
| Timothee Serres | 7/10 | 4403 days | 1% |
| Jesse Flynn | 6/10 | 4408 days | 1% |
| Claudia | 10/10 | 4410 days | 1% |
| Stuart Wilson | 8/10 | 4428 days | 1% |
| Marine | 9/10 | 4429 days | 1% |
| Supiot Zudovic | 10/10 | 4720 days | 1% |
| Iban Dupont | 7/10 | 4721 days | 1% |
| Guillaume Boudrand | 8/10 | 4721 days | 1% |
| Rampon | 9/10 | 4725 days | 1% |
| Jirka Sirka | 8/10 | 4726 days | 1% |
| Debiesse | 9/10 | 4726 days | 1% |
| Jitka Zenahlikova | 5/10 | 4730 days | 1% |
| Gale Willcocks | 10/10 | 4731 days | 1% |
| Ken Richardson | 8/10 | 4731 days | 1% |
| Cloarec Guillaume | 9/10 | 4733 days | 1% |
| Kathy Arthurs | 8/10 | 4738 days | 1% |
| Claire | 7/10 | 4738 days | 1% |
| Brendon Furney | 9/10 | 4742 days | 1% |
| Sanchez | 2/10 | 4750 days | 0% |
| Mary Neustroski | 9/10 | 4752 days | 1% |
| Scholler | 10/10 | 4797 days | 1% |
| Nadine and Jan | 8/10 | 4810 days | 1% |
| Frederick Neilsen | 8/10 | 4840 days | 1% |
| Paulmiriamgarry | 10/10 | 4981 days | 1% |
| Numa Brouimet | 7/10 | 5099 days | 1% |
| Virgil Anabel | 9/10 | 5099 days | 1% |
| Melanie Friessen | 6/10 | 5105 days | 1% |
| D van Dongen | 7/10 | 5107 days | 1% |
| David Perry | 8/10 | 5112 days | 1% |
| pamr | 8/10 | 5116 days | 1% |
| M Neuman | 8/10 | 5124 days | 1% |
| A Sorg | 10/10 | 5124 days | 1% |
| ge04jen | 7/10 | 5163 days | 1% |
| hendrik king | 7/10 | 5163 days | 1% |
| jule | 8/10 | 5224 days | 1% |
| Ryan Dorsey | 8/10 | 5466 days | 1% |
| Kathleen Brown | 8/10 | 5467 days | 1% |
| Pete H | 2/10 | 5843 days | 0% |
| hermine Petz | 2/10 | 5856 days | 0% |
| Mike Kirchner | 6/10 | 5858 days | 1% |
| Ann Grandchamp | 10/10 | 5876 days | 1% |
| Holliger | 7/10 | 5879 days | 1% |
| Kane Chain | 6/10 | 5879 days | 1% |
| Glenn Nicholson | 8/10 | 5882 days | 1% |
| sanneb1 | 7/10 | 5909 days | 1% |
| jamesg | 8/10 | 5922 days | 1% |
| Bas van Schagen | 7/10 | 5931 days | 1% |
| Des Longville | 7/10 | 6077 days | 1% |
| VirginiaR | 9/10 | 6160 days | 1% |
| Raewyn | 7/10 | 6165 days | 1% |
| Sally477 | 9/10 | 6169 days | 1% |
| Limor | 9/10 | 6239 days | 1% |
| Hove | 8/10 | 6240 days | 1% |
| Lieke | 8/10 | 6240 days | 1% |
| martin piper | 8/10 | 6244 days | 1% |
| purplekat99 | 10/10 | 6289 days | 1% |
| Patricia | 10/10 | 6290 days | 1% |
| Tiana | 8/10 | 6308 days | 1% |
| Raey | 10/10 | 6366 days | 1% |
| Carmen | 3/10 | 6420 days | 1% |
| Dave | 7/10 | 6427 days | 1% |
| Sheila Haran | 7/10 | 6540 days | 1% |
| Caroline Cole | 4/10 | 6545 days | 1% |
| Wendy | 8/10 | 6552 days | 1% |
| Annette Hurst | 8/10 | 6558 days | 1% |
| Phil Connelly | 7/10 | 6560 days | 1% |
| Andria Davis | 9/10 | 6561 days | 1% |
| Georgina Mulligan | 7/10 | 6561 days | 1% |
| Claire Masling | 8/10 | 6568 days | 1% |
| Christian Schwerdt | 7/10 | 6569 days | 1% |
| Jackie Horwell | 10/10 | 6569 days | 1% |
| Gustavo | 7/10 | 6569 days | 1% |
| Sean Pierce | 5/10 | 6573 days | 1% |
| Roger and Heather Smith | 10/10 | 6573 days | 1% |
| Tobias Rahm | 10/10 | 6573 days | 1% |
| Roman | 6/10 | 6579 days | 1% |
| ranker_851 | 8/10 | 6579 days | 1% |
| Vaclaf | 8/10 | 6579 days | 1% |
| Sebastian Bleck | 7/10 | 6583 days | 1% |
| Emma Dolk | 4/10 | 6584 days | 1% |
| Sheryl | 8/10 | 6605 days | 1% |
| David | 8/10 | 6614 days | 1% |
| Iain | 6/10 | 6615 days | 1% |
| Fred and Tim | 7/10 | 6649 days | 1% |
| George | 9/10 | 6884 days | 1% |
| Matous | 7/10 | 6889 days | 1% |
| clairekidd | 7/10 | 6897 days | 1% |
| Jonas | 3/10 | 6903 days | 1% |
| Stefan | 7/10 | 6928 days | 1% |
| Stefan | 8/10 | 6938 days | 1% |
| Justin | 9/10 | 6938 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
-3.01% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 53 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 145 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 142 | -2.94% |
| 143 | -2.96% |
| 144 | -2.99% |
| 145 | -3.01% |
| 146 | -3.03% |
| 147 | -3.05% |
| 148 | -3.07% |
| … | … |
Balancing Adjustment
6.09% 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.