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 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
73.54%
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 | 95 days | 100% |
| Glenys Everitt | 10/10 | 187 days | 99% |
| Warren | 5/10 | 307 days | 72% |
| Matt | 10/10 | 1038 days | 41% |
| SBlu | 1/10 | 1069 days | 15% |
| James Fuller | 3/10 | 1100 days | 19% |
| Mark | 4/10 | 1130 days | 21% |
| Véronique Laplante | 1/10 | 1130 days | 13% |
| Brian symmes | 1/10 | 1130 days | 13% |
| R. Armstrong | 5/10 | 1161 days | 23% |
| Sandy | 1/10 | 1344 days | 7% |
| Jonathan | 1/10 | 1495 days | 5% |
| PeteR | 3/10 | 1526 days | 5% |
| La Vie | 1/10 | 1709 days | 2% |
| Pauline Kane | 10/10 | 2287 days | 4% |
| Roy Sandbrook | 10/10 | 2440 days | 4% |
| Nickclev | 3/10 | 2471 days | 2% |
| Pepe Huebner | 4/10 | 2895 days | 2% |
| Jennie Tollerton | 8/10 | 2957 days | 3% |
| Phil Baker | 9/10 | 2960 days | 3% |
| Lily Roelofs | 1/10 | 2987 days | 1% |
| Vince Midmore | 1/10 | 3229 days | 1% |
| Francesca Scott | 10/10 | 3237 days | 2% |
| Erna Muller | 9/10 | 3245 days | 2% |
| Flip Hoogeveen | 8/10 | 3245 days | 2% |
| Chaulet | 5/10 | 3248 days | 2% |
| Felix Koehler | 4/10 | 3249 days | 1% |
| Kristina Nunoz | 7/10 | 3249 days | 2% |
| Becky Fox | 7/10 | 3251 days | 2% |
| Emma Millett | 8/10 | 3251 days | 2% |
| Rohzine | 7/10 | 3251 days | 2% |
| P and W Gene | 8/10 | 3252 days | 2% |
| Maaike | 8/10 | 3280 days | 2% |
| T Geelen | 8/10 | 3280 days | 2% |
| Wendy Steer | 8/10 | 3286 days | 2% |
| Marcel Felder | 7/10 | 3290 days | 2% |
| Jonas Gorb | 8/10 | 3294 days | 2% |
| Rahel | 7/10 | 3294 days | 2% |
| Maria Eriksson | 7/10 | 3297 days | 2% |
| Gilbert Baptiste | 8/10 | 3297 days | 2% |
| Emilie Bavard | 7/10 | 3297 days | 2% |
| Josh Bird | 7/10 | 3299 days | 2% |
| Jemima Brown | 7/10 | 3299 days | 2% |
| Aurelie Otis | 9/10 | 3301 days | 2% |
| Jake Bullin | 10/10 | 3303 days | 2% |
| Lisa | 10/10 | 3304 days | 2% |
| Bina Johansson | 10/10 | 3314 days | 2% |
| Sabrina and Hannes | 8/10 | 3317 days | 2% |
| Rogier Post | 7/10 | 3319 days | 2% |
| Michal Za'heryuk | 8/10 | 3321 days | 2% |
| Karine Dransart | 8/10 | 3325 days | 2% |
| Samuel Michalak | 7/10 | 3328 days | 2% |
| Ben | 7/10 | 3331 days | 2% |
| Julian Gury | 7/10 | 3334 days | 2% |
| Fazeel Ali | 10/10 | 3382 days | 2% |
| Anna | 10/10 | 3535 days | 2% |
| Jan Berendsen | 9/10 | 3539 days | 2% |
| Jorge Anderson | 8/10 | 3539 days | 2% |
| Simon Schatz | 8/10 | 3541 days | 2% |
| Thomas Le Buzulier | 8/10 | 3545 days | 2% |
| Kristina Breitwieser | 8/10 | 3546 days | 2% |
| Magali Schwantke | 8/10 | 3549 days | 2% |
| Laura Schratt | 6/10 | 3552 days | 1% |
| Mathilde Arp | 8/10 | 3552 days | 2% |
| Arnd Kohlen | 6/10 | 3552 days | 1% |
| Laerke Soee | 7/10 | 3553 days | 1% |
| Christian Krause | 9/10 | 3553 days | 2% |
| Mark | 8/10 | 3560 days | 2% |
| Hannes | 10/10 | 3564 days | 2% |
| Nathan Raymond | 10/10 | 3566 days | 2% |
| Rachel Bruce | 5/10 | 3567 days | 1% |
| Sunja Abbe | 9/10 | 3569 days | 2% |
| Kristof | 7/10 | 3571 days | 1% |
| Talissa Missiato | 10/10 | 3572 days | 2% |
| Eloise | 7/10 | 3572 days | 1% |
| Julia Scharbert | 8/10 | 3573 days | 2% |
| Severin Knegsch | 9/10 | 3573 days | 2% |
| Pierre Jouffineau | 9/10 | 3574 days | 2% |
| Floren Hoenschler | 7/10 | 3580 days | 1% |
| Johanna | 7/10 | 3580 days | 1% |
| Natasha Harbinson | 6/10 | 3584 days | 1% |
| Sophie Kalnymsky | 7/10 | 3587 days | 1% |
| Clemence and Pedro | 8/10 | 3588 days | 1% |
| Maxim Motheus | 8/10 | 3590 days | 1% |
| Mijke Boesten | 6/10 | 3591 days | 1% |
| Jan | 6/10 | 3594 days | 1% |
| Cindy Rizzo | 8/10 | 3597 days | 1% |
| Ulli | 10/10 | 3600 days | 1% |
| Dave O'Brien | 10/10 | 3603 days | 1% |
| Annett Kiessling | 7/10 | 3603 days | 1% |
| Chiara | 7/10 | 3605 days | 1% |
| Levi | 8/10 | 3607 days | 1% |
| Martin Baleja | 10/10 | 3608 days | 1% |
| Asborn Damgaard | 9/10 | 3612 days | 1% |
| Leo James | 8/10 | 3612 days | 1% |
| Sophie NIemann | 10/10 | 3613 days | 1% |
| Edwine | 8/10 | 3613 days | 1% |
| Jonathan and Gulsen | 10/10 | 3622 days | 1% |
| Tatiana | 10/10 | 3622 days | 1% |
| Valerie Balcom | 8/10 | 3622 days | 1% |
| Raviv Regev | 8/10 | 3637 days | 1% |
| Monika Dippel | 8/10 | 3640 days | 1% |
| Marc | 6/10 | 3640 days | 1% |
| Christine Slowiak | 8/10 | 3641 days | 1% |
| Justin Kechanski | 6/10 | 3641 days | 1% |
| Judith Goodyear | 7/10 | 3650 days | 1% |
| Hannah Fidora | 8/10 | 3653 days | 1% |
| Sarah Boettcher | 9/10 | 3701 days | 1% |
| Katherine Halliday | 9/10 | 3921 days | 1% |
| Christoph | 8/10 | 3922 days | 1% |
| Katherine Britten | 9/10 | 3924 days | 1% |
| Trevor Wichman | 9/10 | 3965 days | 1% |
| Jan Towers | 10/10 | 4264 days | 0% |
| isabel Zander | 7/10 | 4265 days | 0% |
| Corinne | 8/10 | 4267 days | 0% |
| Martin Sajdok | 5/10 | 4268 days | 0% |
| Camille Bellay | 7/10 | 4268 days | 0% |
| Garry Renton | 7/10 | 4273 days | 0% |
| Paula Renton | 7/10 | 4273 days | 0% |
| Simon Mehlmann | 7/10 | 4274 days | 0% |
| Carolin Siegert | 8/10 | 4274 days | 0% |
| Sarah Beyeler | 10/10 | 4296 days | 0% |
| Kim Lavener | 10/10 | 4296 days | 0% |
| Rosie | 7/10 | 4297 days | 0% |
| Anna Sternberg | 6/10 | 4298 days | 0% |
| Steffen | 9/10 | 4300 days | 0% |
| Nina Helmling | 8/10 | 4300 days | 0% |
| Friederike Kranzin | 7/10 | 4304 days | 0% |
| Guillaume | 6/10 | 4306 days | 0% |
| Roy Matthieu | 7/10 | 4308 days | 0% |
| Cindy Benayoum | 7/10 | 4308 days | 0% |
| Simon Tanguy | 8/10 | 4316 days | 0% |
| David Krasner | 9/10 | 4322 days | 0% |
| Susan | 8/10 | 4322 days | 0% |
| Jesseca Klausch | 6/10 | 4323 days | 0% |
| Vincent Schaeflier | 6/10 | 4323 days | 0% |
| Timothee Serres | 7/10 | 4327 days | 0% |
| Jesse Flynn | 6/10 | 4332 days | 0% |
| Claudia | 10/10 | 4334 days | 0% |
| Stuart Wilson | 8/10 | 4352 days | 0% |
| Marine | 9/10 | 4353 days | 0% |
| Supiot Zudovic | 10/10 | 4644 days | 1% |
| Iban Dupont | 7/10 | 4645 days | 1% |
| Guillaume Boudrand | 8/10 | 4645 days | 1% |
| Rampon | 9/10 | 4649 days | 1% |
| Jirka Sirka | 8/10 | 4650 days | 1% |
| Debiesse | 9/10 | 4650 days | 1% |
| Jitka Zenahlikova | 5/10 | 4654 days | 1% |
| Gale Willcocks | 10/10 | 4655 days | 1% |
| Ken Richardson | 8/10 | 4655 days | 1% |
| Cloarec Guillaume | 9/10 | 4657 days | 1% |
| Kathy Arthurs | 8/10 | 4662 days | 1% |
| Claire | 7/10 | 4662 days | 1% |
| Brendon Furney | 9/10 | 4666 days | 1% |
| Sanchez | 2/10 | 4674 days | 0% |
| Mary Neustroski | 9/10 | 4676 days | 1% |
| Scholler | 10/10 | 4721 days | 1% |
| Nadine and Jan | 8/10 | 4734 days | 1% |
| Frederick Neilsen | 8/10 | 4764 days | 1% |
| Paulmiriamgarry | 10/10 | 4905 days | 1% |
| Numa Brouimet | 7/10 | 5023 days | 1% |
| Virgil Anabel | 9/10 | 5023 days | 1% |
| Melanie Friessen | 6/10 | 5029 days | 1% |
| D van Dongen | 7/10 | 5031 days | 1% |
| David Perry | 8/10 | 5036 days | 1% |
| pamr | 8/10 | 5040 days | 1% |
| M Neuman | 8/10 | 5048 days | 1% |
| A Sorg | 10/10 | 5048 days | 1% |
| ge04jen | 7/10 | 5087 days | 1% |
| hendrik king | 7/10 | 5087 days | 1% |
| jule | 8/10 | 5148 days | 1% |
| Ryan Dorsey | 8/10 | 5390 days | 1% |
| Kathleen Brown | 8/10 | 5391 days | 1% |
| Pete H | 2/10 | 5767 days | 0% |
| hermine Petz | 2/10 | 5780 days | 0% |
| Mike Kirchner | 6/10 | 5782 days | 1% |
| Ann Grandchamp | 10/10 | 5800 days | 1% |
| Holliger | 7/10 | 5803 days | 1% |
| Kane Chain | 6/10 | 5803 days | 1% |
| Glenn Nicholson | 8/10 | 5806 days | 1% |
| sanneb1 | 7/10 | 5833 days | 1% |
| jamesg | 8/10 | 5846 days | 1% |
| Bas van Schagen | 7/10 | 5855 days | 1% |
| Des Longville | 7/10 | 6001 days | 1% |
| VirginiaR | 9/10 | 6084 days | 1% |
| Raewyn | 7/10 | 6089 days | 1% |
| Sally477 | 9/10 | 6093 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 | 6213 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 | 6464 days | 1% |
| Caroline Cole | 4/10 | 6469 days | 1% |
| Wendy | 8/10 | 6476 days | 1% |
| Annette Hurst | 8/10 | 6482 days | 1% |
| Phil Connelly | 7/10 | 6484 days | 1% |
| Andria Davis | 9/10 | 6485 days | 1% |
| Georgina Mulligan | 7/10 | 6485 days | 1% |
| Claire Masling | 8/10 | 6492 days | 1% |
| Christian Schwerdt | 7/10 | 6493 days | 1% |
| Jackie Horwell | 10/10 | 6493 days | 1% |
| Gustavo | 7/10 | 6493 days | 1% |
| Sean Pierce | 5/10 | 6497 days | 1% |
| Roger and Heather Smith | 10/10 | 6497 days | 1% |
| Tobias Rahm | 10/10 | 6497 days | 1% |
| Roman | 6/10 | 6503 days | 1% |
| ranker_851 | 8/10 | 6503 days | 1% |
| Vaclaf | 8/10 | 6503 days | 1% |
| Sebastian Bleck | 7/10 | 6507 days | 1% |
| Emma Dolk | 4/10 | 6508 days | 1% |
| Sheryl | 8/10 | 6529 days | 1% |
| David | 8/10 | 6538 days | 1% |
| Iain | 6/10 | 6539 days | 1% |
| Fred and Tim | 7/10 | 6573 days | 1% |
| George | 9/10 | 6808 days | 1% |
| Matous | 7/10 | 6813 days | 1% |
| clairekidd | 7/10 | 6821 days | 1% |
| Jonas | 3/10 | 6827 days | 0% |
| Stefan | 7/10 | 6852 days | 1% |
| Stefan | 8/10 | 6862 days | 1% |
| Justin | 9/10 | 6862 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.