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
60.33%
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 | 64 days | 100% |
| Matt | 10/10 | 795 days | 84% |
| SBlu | 1/10 | 826 days | 32% |
| James Fuller | 3/10 | 857 days | 41% |
| Mark | 4/10 | 887 days | 47% |
| Véronique Laplante | 1/10 | 887 days | 29% |
| Brian symmes | 1/10 | 887 days | 29% |
| R. Armstrong | 5/10 | 918 days | 52% |
| Sandy | 1/10 | 1101 days | 18% |
| Jonathan | 1/10 | 1252 days | 12% |
| PeteR | 3/10 | 1283 days | 15% |
| La Vie | 1/10 | 1466 days | 6% |
| Pauline Kane | 10/10 | 2044 days | 5% |
| Roy Sandbrook | 10/10 | 2197 days | 5% |
| Nickclev | 3/10 | 2228 days | 2% |
| Pepe Huebner | 4/10 | 2651 days | 2% |
| Jennie Tollerton | 8/10 | 2714 days | 4% |
| Phil Baker | 9/10 | 2717 days | 4% |
| Lily Roelofs | 1/10 | 2743 days | 1% |
| Vince Midmore | 1/10 | 2985 days | 1% |
| Francesca Scott | 10/10 | 2994 days | 3% |
| Erna Muller | 9/10 | 3002 days | 3% |
| Flip Hoogeveen | 8/10 | 3002 days | 3% |
| Chaulet | 5/10 | 3005 days | 2% |
| Felix Koehler | 4/10 | 3006 days | 2% |
| Kristina Nunoz | 7/10 | 3006 days | 3% |
| Becky Fox | 7/10 | 3008 days | 3% |
| Emma Millett | 8/10 | 3008 days | 3% |
| Rohzine | 7/10 | 3008 days | 3% |
| P and W Gene | 8/10 | 3009 days | 3% |
| Maaike | 8/10 | 3037 days | 3% |
| T Geelen | 8/10 | 3037 days | 3% |
| Wendy Steer | 8/10 | 3043 days | 3% |
| Marcel Felder | 7/10 | 3047 days | 3% |
| Jonas Gorb | 8/10 | 3051 days | 3% |
| Rahel | 7/10 | 3051 days | 3% |
| Maria Eriksson | 7/10 | 3054 days | 3% |
| Gilbert Baptiste | 8/10 | 3054 days | 3% |
| Emilie Bavard | 7/10 | 3054 days | 3% |
| Josh Bird | 7/10 | 3056 days | 3% |
| Jemima Brown | 7/10 | 3056 days | 3% |
| Aurelie Otis | 9/10 | 3058 days | 3% |
| Jake Bullin | 10/10 | 3060 days | 3% |
| Lisa | 10/10 | 3061 days | 3% |
| Bina Johansson | 10/10 | 3071 days | 3% |
| Sabrina and Hannes | 8/10 | 3074 days | 3% |
| Rogier Post | 7/10 | 3076 days | 3% |
| Michal Za'heryuk | 8/10 | 3078 days | 3% |
| Karine Dransart | 8/10 | 3082 days | 3% |
| Samuel Michalak | 7/10 | 3085 days | 3% |
| Ben | 7/10 | 3088 days | 3% |
| Julian Gury | 7/10 | 3091 days | 3% |
| Fazeel Ali | 10/10 | 3138 days | 3% |
| Anna | 10/10 | 3292 days | 2% |
| Jan Berendsen | 9/10 | 3296 days | 2% |
| Jorge Anderson | 8/10 | 3296 days | 2% |
| Simon Schatz | 8/10 | 3298 days | 2% |
| Thomas Le Buzulier | 8/10 | 3302 days | 2% |
| Kristina Breitwieser | 8/10 | 3303 days | 2% |
| Magali Schwantke | 8/10 | 3306 days | 2% |
| Laura Schratt | 6/10 | 3309 days | 2% |
| Mathilde Arp | 8/10 | 3309 days | 2% |
| Arnd Kohlen | 6/10 | 3309 days | 2% |
| Laerke Soee | 7/10 | 3310 days | 2% |
| Christian Krause | 9/10 | 3310 days | 2% |
| Mark | 8/10 | 3317 days | 2% |
| Hannes | 10/10 | 3321 days | 2% |
| Nathan Raymond | 10/10 | 3323 days | 2% |
| Rachel Bruce | 5/10 | 3324 days | 1% |
| Sunja Abbe | 9/10 | 3326 days | 2% |
| Kristof | 7/10 | 3328 days | 2% |
| Talissa Missiato | 10/10 | 3329 days | 2% |
| Eloise | 7/10 | 3329 days | 2% |
| Julia Scharbert | 8/10 | 3330 days | 2% |
| Severin Knegsch | 9/10 | 3330 days | 2% |
| Pierre Jouffineau | 9/10 | 3331 days | 2% |
| Floren Hoenschler | 7/10 | 3337 days | 2% |
| Johanna | 7/10 | 3337 days | 2% |
| Natasha Harbinson | 6/10 | 3341 days | 2% |
| Sophie Kalnymsky | 7/10 | 3344 days | 2% |
| Clemence and Pedro | 8/10 | 3345 days | 2% |
| Maxim Motheus | 8/10 | 3347 days | 2% |
| Mijke Boesten | 6/10 | 3348 days | 2% |
| Jan | 6/10 | 3351 days | 2% |
| Cindy Rizzo | 8/10 | 3354 days | 2% |
| Ulli | 10/10 | 3357 days | 2% |
| Dave O'Brien | 10/10 | 3360 days | 2% |
| Annett Kiessling | 7/10 | 3360 days | 2% |
| Chiara | 7/10 | 3362 days | 2% |
| Levi | 8/10 | 3364 days | 2% |
| Martin Baleja | 10/10 | 3365 days | 2% |
| Asborn Damgaard | 9/10 | 3369 days | 2% |
| Leo James | 8/10 | 3369 days | 2% |
| Sophie NIemann | 10/10 | 3370 days | 2% |
| Edwine | 8/10 | 3370 days | 2% |
| Jonathan and Gulsen | 10/10 | 3379 days | 2% |
| Tatiana | 10/10 | 3379 days | 2% |
| Valerie Balcom | 8/10 | 3379 days | 2% |
| Raviv Regev | 8/10 | 3394 days | 2% |
| Monika Dippel | 8/10 | 3397 days | 2% |
| Marc | 6/10 | 3397 days | 2% |
| Christine Slowiak | 8/10 | 3398 days | 2% |
| Justin Kechanski | 6/10 | 3398 days | 2% |
| Judith Goodyear | 7/10 | 3407 days | 2% |
| Hannah Fidora | 8/10 | 3410 days | 2% |
| Sarah Boettcher | 9/10 | 3458 days | 2% |
| Katherine Halliday | 9/10 | 3678 days | 1% |
| Christoph | 8/10 | 3679 days | 1% |
| Katherine Britten | 9/10 | 3681 days | 1% |
| Trevor Wichman | 9/10 | 3722 days | 1% |
| Jan Towers | 10/10 | 4021 days | 0% |
| isabel Zander | 7/10 | 4022 days | 0% |
| Corinne | 8/10 | 4024 days | 0% |
| Martin Sajdok | 5/10 | 4025 days | 0% |
| Camille Bellay | 7/10 | 4025 days | 0% |
| Garry Renton | 7/10 | 4030 days | 0% |
| Paula Renton | 7/10 | 4030 days | 0% |
| Simon Mehlmann | 7/10 | 4031 days | 0% |
| Carolin Siegert | 8/10 | 4031 days | 0% |
| Sarah Beyeler | 10/10 | 4053 days | 0% |
| Kim Lavener | 10/10 | 4053 days | 0% |
| Rosie | 7/10 | 4054 days | 0% |
| Anna Sternberg | 6/10 | 4055 days | 0% |
| Steffen | 9/10 | 4057 days | 0% |
| Nina Helmling | 8/10 | 4057 days | 0% |
| Friederike Kranzin | 7/10 | 4061 days | 0% |
| Guillaume | 6/10 | 4063 days | 0% |
| Roy Matthieu | 7/10 | 4065 days | 0% |
| Cindy Benayoum | 7/10 | 4065 days | 0% |
| Simon Tanguy | 8/10 | 4073 days | 0% |
| David Krasner | 9/10 | 4079 days | 0% |
| Susan | 8/10 | 4079 days | 0% |
| Jesseca Klausch | 6/10 | 4080 days | 0% |
| Vincent Schaeflier | 6/10 | 4080 days | 0% |
| Timothee Serres | 7/10 | 4084 days | 0% |
| Jesse Flynn | 6/10 | 4089 days | 0% |
| Claudia | 10/10 | 4091 days | 0% |
| Stuart Wilson | 8/10 | 4109 days | 0% |
| Marine | 9/10 | 4110 days | 0% |
| Supiot Zudovic | 10/10 | 4401 days | 1% |
| Iban Dupont | 7/10 | 4402 days | 1% |
| Guillaume Boudrand | 8/10 | 4402 days | 1% |
| Rampon | 9/10 | 4406 days | 1% |
| Jirka Sirka | 8/10 | 4407 days | 1% |
| Debiesse | 9/10 | 4407 days | 1% |
| Jitka Zenahlikova | 5/10 | 4411 days | 0% |
| Gale Willcocks | 10/10 | 4412 days | 1% |
| Ken Richardson | 8/10 | 4412 days | 1% |
| Cloarec Guillaume | 9/10 | 4414 days | 1% |
| Kathy Arthurs | 8/10 | 4419 days | 1% |
| Claire | 7/10 | 4419 days | 1% |
| Brendon Furney | 9/10 | 4423 days | 1% |
| Sanchez | 2/10 | 4431 days | 0% |
| Mary Neustroski | 9/10 | 4433 days | 1% |
| Scholler | 10/10 | 4478 days | 1% |
| Nadine and Jan | 8/10 | 4491 days | 1% |
| Frederick Neilsen | 8/10 | 4521 days | 1% |
| Paulmiriamgarry | 10/10 | 4662 days | 1% |
| Numa Brouimet | 7/10 | 4780 days | 1% |
| Virgil Anabel | 9/10 | 4780 days | 1% |
| Melanie Friessen | 6/10 | 4786 days | 1% |
| D van Dongen | 7/10 | 4788 days | 1% |
| David Perry | 8/10 | 4793 days | 1% |
| pamr | 8/10 | 4797 days | 1% |
| M Neuman | 8/10 | 4805 days | 1% |
| A Sorg | 10/10 | 4805 days | 1% |
| ge04jen | 7/10 | 4844 days | 1% |
| hendrik king | 7/10 | 4844 days | 1% |
| jule | 8/10 | 4905 days | 1% |
| Ryan Dorsey | 8/10 | 5147 days | 1% |
| Kathleen Brown | 8/10 | 5148 days | 1% |
| Pete H | 2/10 | 5524 days | 0% |
| hermine Petz | 2/10 | 5537 days | 0% |
| Mike Kirchner | 6/10 | 5539 days | 1% |
| Ann Grandchamp | 10/10 | 5557 days | 1% |
| Holliger | 7/10 | 5560 days | 1% |
| Kane Chain | 6/10 | 5560 days | 1% |
| Glenn Nicholson | 8/10 | 5563 days | 1% |
| sanneb1 | 7/10 | 5590 days | 1% |
| jamesg | 8/10 | 5603 days | 1% |
| Bas van Schagen | 7/10 | 5612 days | 1% |
| Des Longville | 7/10 | 5758 days | 1% |
| VirginiaR | 9/10 | 5841 days | 1% |
| Raewyn | 7/10 | 5846 days | 1% |
| Sally477 | 9/10 | 5850 days | 1% |
| Limor | 9/10 | 5920 days | 1% |
| Hove | 8/10 | 5921 days | 1% |
| Lieke | 8/10 | 5921 days | 1% |
| martin piper | 8/10 | 5924 days | 1% |
| purplekat99 | 10/10 | 5970 days | 1% |
| Patricia | 10/10 | 5970 days | 1% |
| Tiana | 8/10 | 5988 days | 1% |
| Raey | 10/10 | 6046 days | 1% |
| Carmen | 3/10 | 6101 days | 0% |
| Dave | 7/10 | 6108 days | 1% |
| Sheila Haran | 7/10 | 6221 days | 1% |
| Caroline Cole | 4/10 | 6226 days | 0% |
| Wendy | 8/10 | 6233 days | 1% |
| Annette Hurst | 8/10 | 6239 days | 1% |
| Phil Connelly | 7/10 | 6241 days | 1% |
| Andria Davis | 9/10 | 6242 days | 1% |
| Georgina Mulligan | 7/10 | 6242 days | 1% |
| Claire Masling | 8/10 | 6249 days | 1% |
| Christian Schwerdt | 7/10 | 6250 days | 1% |
| Jackie Horwell | 10/10 | 6250 days | 1% |
| Gustavo | 7/10 | 6250 days | 1% |
| Sean Pierce | 5/10 | 6254 days | 0% |
| Roger and Heather Smith | 10/10 | 6254 days | 1% |
| Tobias Rahm | 10/10 | 6254 days | 1% |
| Roman | 6/10 | 6260 days | 1% |
| ranker_851 | 8/10 | 6260 days | 1% |
| Vaclaf | 8/10 | 6260 days | 1% |
| Sebastian Bleck | 7/10 | 6264 days | 1% |
| Emma Dolk | 4/10 | 6265 days | 0% |
| Sheryl | 8/10 | 6286 days | 1% |
| David | 8/10 | 6295 days | 1% |
| Iain | 6/10 | 6296 days | 1% |
| Fred and Tim | 7/10 | 6330 days | 1% |
| George | 9/10 | 6565 days | 1% |
| Matous | 7/10 | 6570 days | 1% |
| clairekidd | 7/10 | 6578 days | 1% |
| Jonas | 3/10 | 6584 days | 0% |
| Stefan | 7/10 | 6609 days | 1% |
| Stefan | 8/10 | 6619 days | 1% |
| Justin | 9/10 | 6619 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
-0.86% 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 47 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 44 | -0.80% |
| 45 | -0.82% |
| 46 | -0.84% |
| 47 | -0.86% |
| 48 | -0.87% |
| 49 | -0.89% |
| 50 | -0.91% |
| … | … |
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.