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 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
73.59%
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 | 98 days | 100% |
| Glenys Everitt | 10/10 | 190 days | 98% |
| Warren | 5/10 | 310 days | 72% |
| Matt | 10/10 | 1041 days | 40% |
| SBlu | 1/10 | 1072 days | 15% |
| James Fuller | 3/10 | 1103 days | 19% |
| Mark | 4/10 | 1133 days | 21% |
| Véronique Laplante | 1/10 | 1133 days | 13% |
| Brian symmes | 1/10 | 1133 days | 13% |
| R. Armstrong | 5/10 | 1164 days | 23% |
| Sandy | 1/10 | 1347 days | 7% |
| Jonathan | 1/10 | 1498 days | 4% |
| PeteR | 3/10 | 1529 days | 5% |
| La Vie | 1/10 | 1712 days | 2% |
| Pauline Kane | 10/10 | 2290 days | 4% |
| Roy Sandbrook | 10/10 | 2443 days | 4% |
| Nickclev | 3/10 | 2474 days | 2% |
| Pepe Huebner | 4/10 | 2898 days | 2% |
| Jennie Tollerton | 8/10 | 2960 days | 3% |
| Phil Baker | 9/10 | 2963 days | 3% |
| Lily Roelofs | 1/10 | 2990 days | 1% |
| Vince Midmore | 1/10 | 3232 days | 1% |
| Francesca Scott | 10/10 | 3240 days | 2% |
| Erna Muller | 9/10 | 3248 days | 2% |
| Flip Hoogeveen | 8/10 | 3248 days | 2% |
| Chaulet | 5/10 | 3251 days | 2% |
| Felix Koehler | 4/10 | 3252 days | 1% |
| Kristina Nunoz | 7/10 | 3252 days | 2% |
| Becky Fox | 7/10 | 3254 days | 2% |
| Emma Millett | 8/10 | 3254 days | 2% |
| Rohzine | 7/10 | 3254 days | 2% |
| P and W Gene | 8/10 | 3255 days | 2% |
| Maaike | 8/10 | 3283 days | 2% |
| T Geelen | 8/10 | 3283 days | 2% |
| Wendy Steer | 8/10 | 3289 days | 2% |
| Marcel Felder | 7/10 | 3293 days | 2% |
| Jonas Gorb | 8/10 | 3297 days | 2% |
| Rahel | 7/10 | 3297 days | 2% |
| Maria Eriksson | 7/10 | 3300 days | 2% |
| Gilbert Baptiste | 8/10 | 3300 days | 2% |
| Emilie Bavard | 7/10 | 3300 days | 2% |
| Josh Bird | 7/10 | 3302 days | 2% |
| Jemima Brown | 7/10 | 3302 days | 2% |
| Aurelie Otis | 9/10 | 3304 days | 2% |
| Jake Bullin | 10/10 | 3306 days | 2% |
| Lisa | 10/10 | 3307 days | 2% |
| Bina Johansson | 10/10 | 3317 days | 2% |
| Sabrina and Hannes | 8/10 | 3320 days | 2% |
| Rogier Post | 7/10 | 3322 days | 2% |
| Michal Za'heryuk | 8/10 | 3324 days | 2% |
| Karine Dransart | 8/10 | 3328 days | 2% |
| Samuel Michalak | 7/10 | 3331 days | 2% |
| Ben | 7/10 | 3334 days | 2% |
| Julian Gury | 7/10 | 3337 days | 2% |
| Fazeel Ali | 10/10 | 3385 days | 2% |
| Anna | 10/10 | 3538 days | 2% |
| Jan Berendsen | 9/10 | 3542 days | 2% |
| Jorge Anderson | 8/10 | 3542 days | 2% |
| Simon Schatz | 8/10 | 3544 days | 2% |
| Thomas Le Buzulier | 8/10 | 3548 days | 2% |
| Kristina Breitwieser | 8/10 | 3549 days | 2% |
| Magali Schwantke | 8/10 | 3552 days | 2% |
| Laura Schratt | 6/10 | 3555 days | 1% |
| Mathilde Arp | 8/10 | 3555 days | 2% |
| Arnd Kohlen | 6/10 | 3555 days | 1% |
| Laerke Soee | 7/10 | 3556 days | 1% |
| Christian Krause | 9/10 | 3556 days | 2% |
| Mark | 8/10 | 3563 days | 2% |
| Hannes | 10/10 | 3567 days | 2% |
| Nathan Raymond | 10/10 | 3569 days | 2% |
| Rachel Bruce | 5/10 | 3570 days | 1% |
| Sunja Abbe | 9/10 | 3572 days | 2% |
| Kristof | 7/10 | 3574 days | 1% |
| Talissa Missiato | 10/10 | 3575 days | 2% |
| Eloise | 7/10 | 3575 days | 1% |
| Julia Scharbert | 8/10 | 3576 days | 2% |
| Severin Knegsch | 9/10 | 3576 days | 2% |
| Pierre Jouffineau | 9/10 | 3577 days | 2% |
| Floren Hoenschler | 7/10 | 3583 days | 1% |
| Johanna | 7/10 | 3583 days | 1% |
| Natasha Harbinson | 6/10 | 3587 days | 1% |
| Sophie Kalnymsky | 7/10 | 3590 days | 1% |
| Clemence and Pedro | 8/10 | 3591 days | 1% |
| Maxim Motheus | 8/10 | 3593 days | 1% |
| Mijke Boesten | 6/10 | 3594 days | 1% |
| Jan | 6/10 | 3597 days | 1% |
| Cindy Rizzo | 8/10 | 3600 days | 1% |
| Ulli | 10/10 | 3603 days | 1% |
| Dave O'Brien | 10/10 | 3606 days | 1% |
| Annett Kiessling | 7/10 | 3606 days | 1% |
| Chiara | 7/10 | 3608 days | 1% |
| Levi | 8/10 | 3610 days | 1% |
| Martin Baleja | 10/10 | 3611 days | 1% |
| Asborn Damgaard | 9/10 | 3615 days | 1% |
| Leo James | 8/10 | 3615 days | 1% |
| Sophie NIemann | 10/10 | 3616 days | 1% |
| Edwine | 8/10 | 3616 days | 1% |
| Jonathan and Gulsen | 10/10 | 3625 days | 1% |
| Tatiana | 10/10 | 3625 days | 1% |
| Valerie Balcom | 8/10 | 3625 days | 1% |
| Raviv Regev | 8/10 | 3640 days | 1% |
| Monika Dippel | 8/10 | 3643 days | 1% |
| Marc | 6/10 | 3643 days | 1% |
| Christine Slowiak | 8/10 | 3644 days | 1% |
| Justin Kechanski | 6/10 | 3644 days | 1% |
| Judith Goodyear | 7/10 | 3653 days | 1% |
| Hannah Fidora | 8/10 | 3656 days | 1% |
| Sarah Boettcher | 9/10 | 3704 days | 1% |
| Katherine Halliday | 9/10 | 3924 days | 1% |
| Christoph | 8/10 | 3925 days | 1% |
| Katherine Britten | 9/10 | 3927 days | 1% |
| Trevor Wichman | 9/10 | 3968 days | 1% |
| Jan Towers | 10/10 | 4267 days | 0% |
| isabel Zander | 7/10 | 4268 days | 0% |
| Corinne | 8/10 | 4270 days | 0% |
| Martin Sajdok | 5/10 | 4271 days | 0% |
| Camille Bellay | 7/10 | 4271 days | 0% |
| Garry Renton | 7/10 | 4276 days | 0% |
| Paula Renton | 7/10 | 4276 days | 0% |
| Simon Mehlmann | 7/10 | 4277 days | 0% |
| Carolin Siegert | 8/10 | 4277 days | 0% |
| Sarah Beyeler | 10/10 | 4299 days | 0% |
| Kim Lavener | 10/10 | 4299 days | 0% |
| Rosie | 7/10 | 4300 days | 0% |
| Anna Sternberg | 6/10 | 4301 days | 0% |
| Steffen | 9/10 | 4303 days | 0% |
| Nina Helmling | 8/10 | 4303 days | 0% |
| Friederike Kranzin | 7/10 | 4307 days | 0% |
| Guillaume | 6/10 | 4309 days | 0% |
| Roy Matthieu | 7/10 | 4311 days | 0% |
| Cindy Benayoum | 7/10 | 4311 days | 0% |
| Simon Tanguy | 8/10 | 4319 days | 0% |
| David Krasner | 9/10 | 4325 days | 0% |
| Susan | 8/10 | 4325 days | 0% |
| Jesseca Klausch | 6/10 | 4326 days | 0% |
| Vincent Schaeflier | 6/10 | 4326 days | 0% |
| Timothee Serres | 7/10 | 4330 days | 0% |
| Jesse Flynn | 6/10 | 4335 days | 0% |
| Claudia | 10/10 | 4337 days | 0% |
| Stuart Wilson | 8/10 | 4355 days | 0% |
| Marine | 9/10 | 4356 days | 0% |
| Supiot Zudovic | 10/10 | 4647 days | 1% |
| Iban Dupont | 7/10 | 4648 days | 1% |
| Guillaume Boudrand | 8/10 | 4648 days | 1% |
| Rampon | 9/10 | 4652 days | 1% |
| Jirka Sirka | 8/10 | 4653 days | 1% |
| Debiesse | 9/10 | 4653 days | 1% |
| Jitka Zenahlikova | 5/10 | 4657 days | 1% |
| Gale Willcocks | 10/10 | 4658 days | 1% |
| Ken Richardson | 8/10 | 4658 days | 1% |
| Cloarec Guillaume | 9/10 | 4660 days | 1% |
| Kathy Arthurs | 8/10 | 4665 days | 1% |
| Claire | 7/10 | 4665 days | 1% |
| Brendon Furney | 9/10 | 4669 days | 1% |
| Sanchez | 2/10 | 4677 days | 0% |
| Mary Neustroski | 9/10 | 4679 days | 1% |
| Scholler | 10/10 | 4724 days | 1% |
| Nadine and Jan | 8/10 | 4737 days | 1% |
| Frederick Neilsen | 8/10 | 4767 days | 1% |
| Paulmiriamgarry | 10/10 | 4908 days | 1% |
| Numa Brouimet | 7/10 | 5026 days | 1% |
| Virgil Anabel | 9/10 | 5026 days | 1% |
| Melanie Friessen | 6/10 | 5032 days | 1% |
| D van Dongen | 7/10 | 5034 days | 1% |
| David Perry | 8/10 | 5039 days | 1% |
| pamr | 8/10 | 5043 days | 1% |
| M Neuman | 8/10 | 5051 days | 1% |
| A Sorg | 10/10 | 5051 days | 1% |
| ge04jen | 7/10 | 5090 days | 1% |
| hendrik king | 7/10 | 5090 days | 1% |
| jule | 8/10 | 5151 days | 1% |
| Ryan Dorsey | 8/10 | 5393 days | 1% |
| Kathleen Brown | 8/10 | 5394 days | 1% |
| Pete H | 2/10 | 5770 days | 0% |
| hermine Petz | 2/10 | 5783 days | 0% |
| Mike Kirchner | 6/10 | 5785 days | 1% |
| Ann Grandchamp | 10/10 | 5803 days | 1% |
| Holliger | 7/10 | 5806 days | 1% |
| Kane Chain | 6/10 | 5806 days | 1% |
| Glenn Nicholson | 8/10 | 5809 days | 1% |
| sanneb1 | 7/10 | 5836 days | 1% |
| jamesg | 8/10 | 5849 days | 1% |
| Bas van Schagen | 7/10 | 5858 days | 1% |
| Des Longville | 7/10 | 6004 days | 1% |
| VirginiaR | 9/10 | 6087 days | 1% |
| Raewyn | 7/10 | 6092 days | 1% |
| Sally477 | 9/10 | 6096 days | 1% |
| Limor | 9/10 | 6166 days | 1% |
| Hove | 8/10 | 6167 days | 1% |
| Lieke | 8/10 | 6167 days | 1% |
| martin piper | 8/10 | 6171 days | 1% |
| purplekat99 | 10/10 | 6216 days | 1% |
| Patricia | 10/10 | 6217 days | 1% |
| Tiana | 8/10 | 6234 days | 1% |
| Raey | 10/10 | 6293 days | 1% |
| Carmen | 3/10 | 6347 days | 1% |
| Dave | 7/10 | 6354 days | 1% |
| Sheila Haran | 7/10 | 6467 days | 1% |
| Caroline Cole | 4/10 | 6472 days | 1% |
| Wendy | 8/10 | 6479 days | 1% |
| Annette Hurst | 8/10 | 6485 days | 1% |
| Phil Connelly | 7/10 | 6487 days | 1% |
| Andria Davis | 9/10 | 6488 days | 1% |
| Georgina Mulligan | 7/10 | 6488 days | 1% |
| Claire Masling | 8/10 | 6495 days | 1% |
| Christian Schwerdt | 7/10 | 6496 days | 1% |
| Jackie Horwell | 10/10 | 6496 days | 1% |
| Gustavo | 7/10 | 6496 days | 1% |
| Sean Pierce | 5/10 | 6500 days | 1% |
| Roger and Heather Smith | 10/10 | 6500 days | 1% |
| Tobias Rahm | 10/10 | 6500 days | 1% |
| Roman | 6/10 | 6506 days | 1% |
| ranker_851 | 8/10 | 6506 days | 1% |
| Vaclaf | 8/10 | 6506 days | 1% |
| Sebastian Bleck | 7/10 | 6510 days | 1% |
| Emma Dolk | 4/10 | 6511 days | 1% |
| Sheryl | 8/10 | 6532 days | 1% |
| David | 8/10 | 6541 days | 1% |
| Iain | 6/10 | 6542 days | 1% |
| Fred and Tim | 7/10 | 6576 days | 1% |
| George | 9/10 | 6811 days | 1% |
| Matous | 7/10 | 6816 days | 1% |
| clairekidd | 7/10 | 6824 days | 1% |
| Jonas | 3/10 | 6830 days | 1% |
| Stefan | 7/10 | 6855 days | 1% |
| Stefan | 8/10 | 6865 days | 1% |
| Justin | 9/10 | 6865 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
-1.47% 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 72 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 69 | -1.40% |
| 70 | -1.42% |
| 71 | -1.45% |
| 72 | -1.47% |
| 73 | -1.49% |
| 74 | -1.51% |
| 75 | -1.53% |
| … | … |
Balancing Adjustment
5.90% 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.