G'day, 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.
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Bluebridge Cook Strait Ferry
Valid Reviews
225 Valid Reviews
The Bluebridge Cook Strait Ferry experience has a total of 228 reviews. There are 225 valid reviews that are included when calculating the ranking score and 3 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 225 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 34 |
|
15% |
| 9/10 | 28 |
|
12% |
| 8/10 | 64 |
|
28% |
| 7/10 | 54 |
|
24% |
| 6/10 | 17 |
|
8% |
| 5/10 | 7 |
|
3% |
| 4/10 | 5 |
|
2% |
| 3/10 | 5 |
|
2% |
| 2/10 | 3 |
|
1% |
| 1/10 | 8 |
|
4% |
74.13% Average
The raw data average (mean) for all the Bluebridge Cook Strait Ferry valid reviews is 74.13% and is based on 225 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 225 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
60.31%
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 |
|---|---|---|---|
| Warren | 5/10 | 62 days | 100% |
| Matt | 10/10 | 793 days | 84% |
| SBlu | 1/10 | 824 days | 32% |
| James Fuller | 3/10 | 855 days | 41% |
| Mark | 4/10 | 885 days | 47% |
| Véronique Laplante | 1/10 | 885 days | 29% |
| Brian symmes | 1/10 | 885 days | 29% |
| R. Armstrong | 5/10 | 916 days | 52% |
| Sandy | 1/10 | 1099 days | 18% |
| Jonathan | 1/10 | 1250 days | 12% |
| PeteR | 3/10 | 1281 days | 15% |
| La Vie | 1/10 | 1464 days | 6% |
| Pauline Kane | 10/10 | 2042 days | 5% |
| Roy Sandbrook | 10/10 | 2195 days | 5% |
| Nickclev | 3/10 | 2226 days | 2% |
| Pepe Huebner | 4/10 | 2649 days | 2% |
| Jennie Tollerton | 8/10 | 2712 days | 4% |
| Phil Baker | 9/10 | 2715 days | 4% |
| Lily Roelofs | 1/10 | 2741 days | 1% |
| Vince Midmore | 1/10 | 2983 days | 1% |
| Francesca Scott | 10/10 | 2992 days | 3% |
| Erna Muller | 9/10 | 3000 days | 3% |
| Flip Hoogeveen | 8/10 | 3000 days | 3% |
| Chaulet | 5/10 | 3003 days | 2% |
| Felix Koehler | 4/10 | 3004 days | 2% |
| Kristina Nunoz | 7/10 | 3004 days | 3% |
| Becky Fox | 7/10 | 3006 days | 3% |
| Emma Millett | 8/10 | 3006 days | 3% |
| Rohzine | 7/10 | 3006 days | 3% |
| P and W Gene | 8/10 | 3007 days | 3% |
| Maaike | 8/10 | 3035 days | 3% |
| T Geelen | 8/10 | 3035 days | 3% |
| Wendy Steer | 8/10 | 3041 days | 3% |
| Marcel Felder | 7/10 | 3045 days | 3% |
| Jonas Gorb | 8/10 | 3049 days | 3% |
| Rahel | 7/10 | 3049 days | 3% |
| Maria Eriksson | 7/10 | 3052 days | 3% |
| Gilbert Baptiste | 8/10 | 3052 days | 3% |
| Emilie Bavard | 7/10 | 3052 days | 3% |
| Josh Bird | 7/10 | 3054 days | 3% |
| Jemima Brown | 7/10 | 3054 days | 3% |
| Aurelie Otis | 9/10 | 3056 days | 3% |
| Jake Bullin | 10/10 | 3058 days | 3% |
| Lisa | 10/10 | 3059 days | 3% |
| Bina Johansson | 10/10 | 3069 days | 3% |
| Sabrina and Hannes | 8/10 | 3072 days | 3% |
| Rogier Post | 7/10 | 3074 days | 3% |
| Michal Za'heryuk | 8/10 | 3076 days | 3% |
| Karine Dransart | 8/10 | 3080 days | 3% |
| Samuel Michalak | 7/10 | 3083 days | 3% |
| Ben | 7/10 | 3086 days | 3% |
| Julian Gury | 7/10 | 3089 days | 3% |
| Fazeel Ali | 10/10 | 3136 days | 3% |
| Anna | 10/10 | 3290 days | 2% |
| Jan Berendsen | 9/10 | 3294 days | 2% |
| Jorge Anderson | 8/10 | 3294 days | 2% |
| Simon Schatz | 8/10 | 3296 days | 2% |
| Thomas Le Buzulier | 8/10 | 3300 days | 2% |
| Kristina Breitwieser | 8/10 | 3301 days | 2% |
| Magali Schwantke | 8/10 | 3304 days | 2% |
| Laura Schratt | 6/10 | 3307 days | 2% |
| Mathilde Arp | 8/10 | 3307 days | 2% |
| Arnd Kohlen | 6/10 | 3307 days | 2% |
| Laerke Soee | 7/10 | 3308 days | 2% |
| Christian Krause | 9/10 | 3308 days | 2% |
| Mark | 8/10 | 3315 days | 2% |
| Hannes | 10/10 | 3319 days | 2% |
| Nathan Raymond | 10/10 | 3321 days | 2% |
| Rachel Bruce | 5/10 | 3322 days | 1% |
| Sunja Abbe | 9/10 | 3324 days | 2% |
| Kristof | 7/10 | 3326 days | 2% |
| Talissa Missiato | 10/10 | 3327 days | 2% |
| Eloise | 7/10 | 3327 days | 2% |
| Julia Scharbert | 8/10 | 3328 days | 2% |
| Severin Knegsch | 9/10 | 3328 days | 2% |
| Pierre Jouffineau | 9/10 | 3329 days | 2% |
| Floren Hoenschler | 7/10 | 3335 days | 2% |
| Johanna | 7/10 | 3335 days | 2% |
| Natasha Harbinson | 6/10 | 3339 days | 2% |
| Sophie Kalnymsky | 7/10 | 3342 days | 2% |
| Clemence and Pedro | 8/10 | 3343 days | 2% |
| Maxim Motheus | 8/10 | 3345 days | 2% |
| Mijke Boesten | 6/10 | 3346 days | 2% |
| Jan | 6/10 | 3349 days | 2% |
| Cindy Rizzo | 8/10 | 3352 days | 2% |
| Ulli | 10/10 | 3355 days | 2% |
| Dave O'Brien | 10/10 | 3358 days | 2% |
| Annett Kiessling | 7/10 | 3358 days | 2% |
| Chiara | 7/10 | 3360 days | 2% |
| Levi | 8/10 | 3362 days | 2% |
| Martin Baleja | 10/10 | 3363 days | 2% |
| Asborn Damgaard | 9/10 | 3367 days | 2% |
| Leo James | 8/10 | 3367 days | 2% |
| Sophie NIemann | 10/10 | 3368 days | 2% |
| Edwine | 8/10 | 3368 days | 2% |
| Jonathan and Gulsen | 10/10 | 3377 days | 2% |
| Tatiana | 10/10 | 3377 days | 2% |
| Valerie Balcom | 8/10 | 3377 days | 2% |
| Raviv Regev | 8/10 | 3392 days | 2% |
| Monika Dippel | 8/10 | 3395 days | 2% |
| Marc | 6/10 | 3395 days | 2% |
| Christine Slowiak | 8/10 | 3396 days | 2% |
| Justin Kechanski | 6/10 | 3396 days | 2% |
| Judith Goodyear | 7/10 | 3405 days | 2% |
| Hannah Fidora | 8/10 | 3408 days | 2% |
| Sarah Boettcher | 9/10 | 3456 days | 2% |
| Katherine Halliday | 9/10 | 3676 days | 1% |
| Christoph | 8/10 | 3677 days | 1% |
| Katherine Britten | 9/10 | 3679 days | 1% |
| Trevor Wichman | 9/10 | 3720 days | 1% |
| Jan Towers | 10/10 | 4019 days | 0% |
| isabel Zander | 7/10 | 4020 days | 0% |
| Corinne | 8/10 | 4022 days | 0% |
| Martin Sajdok | 5/10 | 4023 days | 0% |
| Camille Bellay | 7/10 | 4023 days | 0% |
| Garry Renton | 7/10 | 4028 days | 0% |
| Paula Renton | 7/10 | 4028 days | 0% |
| Simon Mehlmann | 7/10 | 4029 days | 0% |
| Carolin Siegert | 8/10 | 4029 days | 0% |
| Sarah Beyeler | 10/10 | 4051 days | 0% |
| Kim Lavener | 10/10 | 4051 days | 0% |
| Rosie | 7/10 | 4052 days | 0% |
| Anna Sternberg | 6/10 | 4053 days | 0% |
| Steffen | 9/10 | 4055 days | 0% |
| Nina Helmling | 8/10 | 4055 days | 0% |
| Friederike Kranzin | 7/10 | 4059 days | 0% |
| Guillaume | 6/10 | 4061 days | 0% |
| Roy Matthieu | 7/10 | 4063 days | 0% |
| Cindy Benayoum | 7/10 | 4063 days | 0% |
| Simon Tanguy | 8/10 | 4071 days | 0% |
| David Krasner | 9/10 | 4077 days | 0% |
| Susan | 8/10 | 4077 days | 0% |
| Jesseca Klausch | 6/10 | 4078 days | 0% |
| Vincent Schaeflier | 6/10 | 4078 days | 0% |
| Timothee Serres | 7/10 | 4082 days | 0% |
| Jesse Flynn | 6/10 | 4087 days | 0% |
| Claudia | 10/10 | 4089 days | 0% |
| Stuart Wilson | 8/10 | 4107 days | 0% |
| Marine | 9/10 | 4108 days | 0% |
| Supiot Zudovic | 10/10 | 4399 days | 1% |
| Iban Dupont | 7/10 | 4400 days | 1% |
| Guillaume Boudrand | 8/10 | 4400 days | 1% |
| Rampon | 9/10 | 4404 days | 1% |
| Jirka Sirka | 8/10 | 4405 days | 1% |
| Debiesse | 9/10 | 4405 days | 1% |
| Jitka Zenahlikova | 5/10 | 4409 days | 0% |
| Gale Willcocks | 10/10 | 4410 days | 1% |
| Ken Richardson | 8/10 | 4410 days | 1% |
| Cloarec Guillaume | 9/10 | 4412 days | 1% |
| Kathy Arthurs | 8/10 | 4417 days | 1% |
| Claire | 7/10 | 4417 days | 1% |
| Brendon Furney | 9/10 | 4421 days | 1% |
| Sanchez | 2/10 | 4429 days | 0% |
| Mary Neustroski | 9/10 | 4431 days | 1% |
| Scholler | 10/10 | 4476 days | 1% |
| Nadine and Jan | 8/10 | 4489 days | 1% |
| Frederick Neilsen | 8/10 | 4519 days | 1% |
| Paulmiriamgarry | 10/10 | 4660 days | 1% |
| Numa Brouimet | 7/10 | 4778 days | 1% |
| Virgil Anabel | 9/10 | 4778 days | 1% |
| Melanie Friessen | 6/10 | 4784 days | 1% |
| D van Dongen | 7/10 | 4786 days | 1% |
| David Perry | 8/10 | 4791 days | 1% |
| pamr | 8/10 | 4795 days | 1% |
| M Neuman | 8/10 | 4803 days | 1% |
| A Sorg | 10/10 | 4803 days | 1% |
| ge04jen | 7/10 | 4842 days | 1% |
| hendrik king | 7/10 | 4842 days | 1% |
| jule | 8/10 | 4903 days | 1% |
| Ryan Dorsey | 8/10 | 5145 days | 1% |
| Kathleen Brown | 8/10 | 5146 days | 1% |
| Pete H | 2/10 | 5522 days | 0% |
| hermine Petz | 2/10 | 5535 days | 0% |
| Mike Kirchner | 6/10 | 5537 days | 1% |
| Ann Grandchamp | 10/10 | 5555 days | 1% |
| Holliger | 7/10 | 5558 days | 1% |
| Kane Chain | 6/10 | 5558 days | 1% |
| Glenn Nicholson | 8/10 | 5561 days | 1% |
| sanneb1 | 7/10 | 5588 days | 1% |
| jamesg | 8/10 | 5601 days | 1% |
| Bas van Schagen | 7/10 | 5610 days | 1% |
| Des Longville | 7/10 | 5756 days | 1% |
| VirginiaR | 9/10 | 5839 days | 1% |
| Raewyn | 7/10 | 5844 days | 1% |
| Sally477 | 9/10 | 5848 days | 1% |
| Limor | 9/10 | 5918 days | 1% |
| Hove | 8/10 | 5919 days | 1% |
| Lieke | 8/10 | 5919 days | 1% |
| martin piper | 8/10 | 5923 days | 1% |
| purplekat99 | 10/10 | 5968 days | 1% |
| Patricia | 10/10 | 5968 days | 1% |
| Tiana | 8/10 | 5986 days | 1% |
| Raey | 10/10 | 6045 days | 1% |
| Carmen | 3/10 | 6099 days | 0% |
| Dave | 7/10 | 6106 days | 1% |
| Sheila Haran | 7/10 | 6219 days | 1% |
| Caroline Cole | 4/10 | 6224 days | 0% |
| Wendy | 8/10 | 6231 days | 1% |
| Annette Hurst | 8/10 | 6237 days | 1% |
| Phil Connelly | 7/10 | 6239 days | 1% |
| Andria Davis | 9/10 | 6240 days | 1% |
| Georgina Mulligan | 7/10 | 6240 days | 1% |
| Claire Masling | 8/10 | 6247 days | 1% |
| Christian Schwerdt | 7/10 | 6248 days | 1% |
| Jackie Horwell | 10/10 | 6248 days | 1% |
| Gustavo | 7/10 | 6248 days | 1% |
| Sean Pierce | 5/10 | 6252 days | 0% |
| Roger and Heather Smith | 10/10 | 6252 days | 1% |
| Tobias Rahm | 10/10 | 6252 days | 1% |
| Roman | 6/10 | 6258 days | 1% |
| ranker_851 | 8/10 | 6258 days | 1% |
| Vaclaf | 8/10 | 6258 days | 1% |
| Sebastian Bleck | 7/10 | 6262 days | 1% |
| Emma Dolk | 4/10 | 6263 days | 0% |
| Sheryl | 8/10 | 6284 days | 1% |
| David | 8/10 | 6293 days | 1% |
| Iain | 6/10 | 6294 days | 1% |
| Fred and Tim | 7/10 | 6328 days | 1% |
| George | 9/10 | 6563 days | 1% |
| Matous | 7/10 | 6568 days | 1% |
| clairekidd | 7/10 | 6576 days | 1% |
| Jonas | 3/10 | 6582 days | 0% |
| Stefan | 7/10 | 6607 days | 1% |
| Stefan | 8/10 | 6617 days | 1% |
| Justin | 9/10 | 6617 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
-0.85% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 61 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 46 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 43 | -0.79% |
| 44 | -0.81% |
| 45 | -0.83% |
| 46 | -0.85% |
| 47 | -0.87% |
| 48 | -0.88% |
| 49 | -0.90% |
| … | … |
Balancing Adjustment
14.41% 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
74%
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.