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
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
80.21%
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 | 73 days | 100% |
| Bonnie Henderson - Waho | 10/10 | 315 days | 95% |
| Glenys Everitt | 10/10 | 407 days | 91% |
| Warren | 5/10 | 527 days | 64% |
| Matt | 10/10 | 1258 days | 23% |
| SBlu | 1/10 | 1289 days | 8% |
| James Fuller | 3/10 | 1320 days | 10% |
| Mark | 4/10 | 1350 days | 11% |
| Véronique Laplante | 1/10 | 1350 days | 7% |
| Brian symmes | 1/10 | 1350 days | 7% |
| R. Armstrong | 5/10 | 1381 days | 12% |
| Sandy | 1/10 | 1564 days | 3% |
| Jonathan | 1/10 | 1715 days | 2% |
| PeteR | 3/10 | 1746 days | 3% |
| La Vie | 1/10 | 1929 days | 2% |
| Pauline Kane | 10/10 | 2507 days | 3% |
| Roy Sandbrook | 10/10 | 2660 days | 3% |
| Nickclev | 3/10 | 2691 days | 1% |
| Pepe Huebner | 4/10 | 3114 days | 1% |
| Jennie Tollerton | 8/10 | 3177 days | 2% |
| Phil Baker | 9/10 | 3180 days | 2% |
| Lily Roelofs | 1/10 | 3206 days | 1% |
| Vince Midmore | 1/10 | 3448 days | 0% |
| Francesca Scott | 10/10 | 3457 days | 1% |
| Erna Muller | 9/10 | 3465 days | 1% |
| Flip Hoogeveen | 8/10 | 3465 days | 1% |
| Chaulet | 5/10 | 3468 days | 1% |
| Felix Koehler | 4/10 | 3469 days | 1% |
| Kristina Nunoz | 7/10 | 3469 days | 1% |
| Becky Fox | 7/10 | 3471 days | 1% |
| Emma Millett | 8/10 | 3471 days | 1% |
| Rohzine | 7/10 | 3471 days | 1% |
| P and W Gene | 8/10 | 3472 days | 1% |
| Maaike | 8/10 | 3500 days | 1% |
| T Geelen | 8/10 | 3500 days | 1% |
| Wendy Steer | 8/10 | 3506 days | 1% |
| Marcel Felder | 7/10 | 3510 days | 1% |
| Jonas Gorb | 8/10 | 3514 days | 1% |
| Rahel | 7/10 | 3514 days | 1% |
| Maria Eriksson | 7/10 | 3517 days | 1% |
| Gilbert Baptiste | 8/10 | 3517 days | 1% |
| Emilie Bavard | 7/10 | 3517 days | 1% |
| Josh Bird | 7/10 | 3519 days | 1% |
| Jemima Brown | 7/10 | 3519 days | 1% |
| Aurelie Otis | 9/10 | 3521 days | 1% |
| Jake Bullin | 10/10 | 3523 days | 1% |
| Lisa | 10/10 | 3524 days | 1% |
| Bina Johansson | 10/10 | 3534 days | 1% |
| Sabrina and Hannes | 8/10 | 3537 days | 1% |
| Rogier Post | 7/10 | 3539 days | 1% |
| Michal Za'heryuk | 8/10 | 3541 days | 1% |
| Karine Dransart | 8/10 | 3545 days | 1% |
| Samuel Michalak | 7/10 | 3548 days | 1% |
| Ben | 7/10 | 3551 days | 1% |
| Julian Gury | 7/10 | 3554 days | 1% |
| Fazeel Ali | 10/10 | 3601 days | 1% |
| Anna | 10/10 | 3755 days | 1% |
| Jan Berendsen | 9/10 | 3759 days | 1% |
| Jorge Anderson | 8/10 | 3759 days | 1% |
| Simon Schatz | 8/10 | 3761 days | 1% |
| Thomas Le Buzulier | 8/10 | 3765 days | 1% |
| Kristina Breitwieser | 8/10 | 3766 days | 1% |
| Magali Schwantke | 8/10 | 3769 days | 1% |
| Laura Schratt | 6/10 | 3772 days | 1% |
| Mathilde Arp | 8/10 | 3772 days | 1% |
| Arnd Kohlen | 6/10 | 3772 days | 1% |
| Laerke Soee | 7/10 | 3773 days | 1% |
| Christian Krause | 9/10 | 3773 days | 1% |
| Mark | 8/10 | 3780 days | 1% |
| Hannes | 10/10 | 3784 days | 1% |
| Nathan Raymond | 10/10 | 3786 days | 1% |
| Rachel Bruce | 5/10 | 3787 days | 1% |
| Sunja Abbe | 9/10 | 3789 days | 1% |
| Kristof | 7/10 | 3791 days | 1% |
| Talissa Missiato | 10/10 | 3792 days | 1% |
| Eloise | 7/10 | 3792 days | 1% |
| Julia Scharbert | 8/10 | 3793 days | 1% |
| Severin Knegsch | 9/10 | 3793 days | 1% |
| Pierre Jouffineau | 9/10 | 3794 days | 1% |
| Floren Hoenschler | 7/10 | 3800 days | 1% |
| Johanna | 7/10 | 3800 days | 1% |
| Natasha Harbinson | 6/10 | 3804 days | 1% |
| Sophie Kalnymsky | 7/10 | 3807 days | 1% |
| Clemence and Pedro | 8/10 | 3808 days | 1% |
| Maxim Motheus | 8/10 | 3810 days | 1% |
| Mijke Boesten | 6/10 | 3811 days | 1% |
| Jan | 6/10 | 3814 days | 1% |
| Cindy Rizzo | 8/10 | 3817 days | 1% |
| Ulli | 10/10 | 3820 days | 1% |
| Dave O'Brien | 10/10 | 3823 days | 1% |
| Annett Kiessling | 7/10 | 3823 days | 1% |
| Chiara | 7/10 | 3825 days | 1% |
| Levi | 8/10 | 3827 days | 1% |
| Martin Baleja | 10/10 | 3828 days | 1% |
| Asborn Damgaard | 9/10 | 3832 days | 1% |
| Leo James | 8/10 | 3832 days | 1% |
| Sophie NIemann | 10/10 | 3833 days | 1% |
| Edwine | 8/10 | 3833 days | 1% |
| Jonathan and Gulsen | 10/10 | 3842 days | 1% |
| Tatiana | 10/10 | 3842 days | 1% |
| Valerie Balcom | 8/10 | 3842 days | 1% |
| Raviv Regev | 8/10 | 3857 days | 1% |
| Monika Dippel | 8/10 | 3860 days | 1% |
| Marc | 6/10 | 3860 days | 1% |
| Christine Slowiak | 8/10 | 3861 days | 1% |
| Justin Kechanski | 6/10 | 3861 days | 1% |
| Judith Goodyear | 7/10 | 3870 days | 1% |
| Hannah Fidora | 8/10 | 3873 days | 1% |
| Sarah Boettcher | 9/10 | 3921 days | 1% |
| Katherine Halliday | 9/10 | 4141 days | 0% |
| Christoph | 8/10 | 4142 days | 0% |
| Katherine Britten | 9/10 | 4144 days | 0% |
| Trevor Wichman | 9/10 | 4185 days | 0% |
| Jan Towers | 10/10 | 4484 days | 1% |
| isabel Zander | 7/10 | 4485 days | 1% |
| Corinne | 8/10 | 4487 days | 1% |
| Martin Sajdok | 5/10 | 4488 days | 0% |
| Camille Bellay | 7/10 | 4488 days | 1% |
| Garry Renton | 7/10 | 4493 days | 1% |
| Paula Renton | 7/10 | 4493 days | 1% |
| Simon Mehlmann | 7/10 | 4494 days | 1% |
| Carolin Siegert | 8/10 | 4494 days | 1% |
| Sarah Beyeler | 10/10 | 4516 days | 1% |
| Kim Lavener | 10/10 | 4516 days | 1% |
| Rosie | 7/10 | 4517 days | 1% |
| Anna Sternberg | 6/10 | 4518 days | 0% |
| Steffen | 9/10 | 4520 days | 1% |
| Nina Helmling | 8/10 | 4520 days | 1% |
| Friederike Kranzin | 7/10 | 4524 days | 1% |
| Guillaume | 6/10 | 4526 days | 0% |
| Roy Matthieu | 7/10 | 4528 days | 1% |
| Cindy Benayoum | 7/10 | 4528 days | 1% |
| Simon Tanguy | 8/10 | 4536 days | 1% |
| David Krasner | 9/10 | 4542 days | 1% |
| Susan | 8/10 | 4542 days | 1% |
| Jesseca Klausch | 6/10 | 4543 days | 0% |
| Vincent Schaeflier | 6/10 | 4543 days | 0% |
| Timothee Serres | 7/10 | 4547 days | 1% |
| Jesse Flynn | 6/10 | 4552 days | 0% |
| Claudia | 10/10 | 4554 days | 1% |
| Stuart Wilson | 8/10 | 4572 days | 1% |
| Marine | 9/10 | 4573 days | 1% |
| Supiot Zudovic | 10/10 | 4864 days | 1% |
| Iban Dupont | 7/10 | 4865 days | 1% |
| Guillaume Boudrand | 8/10 | 4865 days | 1% |
| Rampon | 9/10 | 4869 days | 1% |
| Jirka Sirka | 8/10 | 4870 days | 1% |
| Debiesse | 9/10 | 4870 days | 1% |
| Jitka Zenahlikova | 5/10 | 4874 days | 0% |
| Gale Willcocks | 10/10 | 4875 days | 1% |
| Ken Richardson | 8/10 | 4875 days | 1% |
| Cloarec Guillaume | 9/10 | 4877 days | 1% |
| Kathy Arthurs | 8/10 | 4882 days | 1% |
| Claire | 7/10 | 4882 days | 1% |
| Brendon Furney | 9/10 | 4886 days | 1% |
| Sanchez | 2/10 | 4894 days | 0% |
| Mary Neustroski | 9/10 | 4896 days | 1% |
| Scholler | 10/10 | 4941 days | 1% |
| Nadine and Jan | 8/10 | 4954 days | 1% |
| Frederick Neilsen | 8/10 | 4984 days | 1% |
| Paulmiriamgarry | 10/10 | 5125 days | 1% |
| Numa Brouimet | 7/10 | 5243 days | 1% |
| Virgil Anabel | 9/10 | 5243 days | 1% |
| Melanie Friessen | 6/10 | 5249 days | 0% |
| D van Dongen | 7/10 | 5251 days | 1% |
| David Perry | 8/10 | 5256 days | 1% |
| pamr | 8/10 | 5260 days | 1% |
| M Neuman | 8/10 | 5268 days | 1% |
| A Sorg | 10/10 | 5268 days | 1% |
| ge04jen | 7/10 | 5307 days | 1% |
| hendrik king | 7/10 | 5307 days | 1% |
| jule | 8/10 | 5368 days | 1% |
| Ryan Dorsey | 8/10 | 5610 days | 1% |
| Kathleen Brown | 8/10 | 5611 days | 1% |
| Pete H | 2/10 | 5987 days | 0% |
| hermine Petz | 2/10 | 6000 days | 0% |
| Mike Kirchner | 6/10 | 6002 days | 0% |
| Ann Grandchamp | 10/10 | 6020 days | 1% |
| Holliger | 7/10 | 6023 days | 1% |
| Kane Chain | 6/10 | 6023 days | 0% |
| Glenn Nicholson | 8/10 | 6026 days | 1% |
| sanneb1 | 7/10 | 6053 days | 1% |
| jamesg | 8/10 | 6066 days | 1% |
| Bas van Schagen | 7/10 | 6075 days | 1% |
| Des Longville | 7/10 | 6221 days | 1% |
| VirginiaR | 9/10 | 6304 days | 1% |
| Raewyn | 7/10 | 6309 days | 1% |
| Sally477 | 9/10 | 6313 days | 1% |
| Limor | 9/10 | 6383 days | 1% |
| Hove | 8/10 | 6384 days | 1% |
| Lieke | 8/10 | 6384 days | 1% |
| martin piper | 8/10 | 6388 days | 1% |
| purplekat99 | 10/10 | 6433 days | 1% |
| Patricia | 10/10 | 6433 days | 1% |
| Tiana | 8/10 | 6451 days | 1% |
| Raey | 10/10 | 6510 days | 1% |
| Carmen | 3/10 | 6564 days | 0% |
| Dave | 7/10 | 6571 days | 1% |
| Sheila Haran | 7/10 | 6684 days | 1% |
| Caroline Cole | 4/10 | 6689 days | 0% |
| Wendy | 8/10 | 6696 days | 1% |
| Annette Hurst | 8/10 | 6702 days | 1% |
| Phil Connelly | 7/10 | 6704 days | 1% |
| Andria Davis | 9/10 | 6705 days | 1% |
| Georgina Mulligan | 7/10 | 6705 days | 1% |
| Claire Masling | 8/10 | 6712 days | 1% |
| Christian Schwerdt | 7/10 | 6713 days | 1% |
| Jackie Horwell | 10/10 | 6713 days | 1% |
| Gustavo | 7/10 | 6713 days | 1% |
| Sean Pierce | 5/10 | 6717 days | 0% |
| Roger and Heather Smith | 10/10 | 6717 days | 1% |
| Tobias Rahm | 10/10 | 6717 days | 1% |
| Roman | 6/10 | 6723 days | 0% |
| ranker_851 | 8/10 | 6723 days | 1% |
| Vaclaf | 8/10 | 6723 days | 1% |
| Sebastian Bleck | 7/10 | 6727 days | 1% |
| Emma Dolk | 4/10 | 6728 days | 0% |
| Sheryl | 8/10 | 6749 days | 1% |
| David | 8/10 | 6758 days | 1% |
| Iain | 6/10 | 6759 days | 0% |
| Fred and Tim | 7/10 | 6793 days | 1% |
| George | 9/10 | 7028 days | 1% |
| Matous | 7/10 | 7033 days | 1% |
| clairekidd | 7/10 | 7041 days | 1% |
| Jonas | 3/10 | 7047 days | 0% |
| Stefan | 7/10 | 7072 days | 1% |
| Stefan | 8/10 | 7082 days | 1% |
| Justin | 9/10 | 7082 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
-0.54% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 125 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 54 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 51 | -0.51% |
| 52 | -0.52% |
| 53 | -0.53% |
| 54 | -0.54% |
| 55 | -0.55% |
| 56 | -0.56% |
| 57 | -0.57% |
| … | … |
Balancing Adjustment
3.09% 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
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.