Hi, 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
225 Valid Reviews
The Bluebridge Cook Strait Ferry experience has a total of 227 reviews. There are 225 valid reviews that are included when calculating the ranking score and 2 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 | 29 |
|
13% |
| 8/10 | 64 |
|
28% |
| 7/10 | 54 |
|
24% |
| 6/10 | 17 |
|
8% |
| 5/10 | 6 |
|
3% |
| 4/10 | 5 |
|
2% |
| 3/10 | 5 |
|
2% |
| 2/10 | 3 |
|
1% |
| 1/10 | 8 |
|
4% |
74.31% Average
The raw data average (mean) for all the Bluebridge Cook Strait Ferry valid reviews is 74.31% 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
192 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 192 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 192 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 26 |
|
14% |
| 9/10 | 28 |
|
15% |
| 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% |
76.98% Average
The raw data average (mean) for all the Bluebridge Cook Strait Ferry face-to-face reviews is 76.98% and is based on 192 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
60.52%
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 |
|---|---|---|---|
| Matt | 10/10 | 730 days | 100% |
| SBlu | 1/10 | 761 days | 39% |
| James Fuller | 3/10 | 792 days | 50% |
| Mark | 4/10 | 822 days | 58% |
| Véronique Laplante | 1/10 | 822 days | 36% |
| Brian symmes | 1/10 | 822 days | 36% |
| R. Armstrong | 5/10 | 853 days | 64% |
| Sandy | 1/10 | 1036 days | 24% |
| Jonathan | 1/10 | 1187 days | 16% |
| PeteR | 3/10 | 1218 days | 20% |
| La Vie | 1/10 | 1401 days | 9% |
| Pauline Kane | 10/10 | 1979 days | 7% |
| Roy Sandbrook | 10/10 | 2132 days | 6% |
| Nickclev | 3/10 | 2163 days | 3% |
| Pepe Huebner | 4/10 | 2586 days | 3% |
| Jennie Tollerton | 8/10 | 2649 days | 5% |
| Phil Baker | 9/10 | 2652 days | 5% |
| Lily Roelofs | 1/10 | 2678 days | 2% |
| Vince Midmore | 1/10 | 2920 days | 2% |
| Francesca Scott | 10/10 | 2929 days | 4% |
| Erna Muller | 9/10 | 2937 days | 4% |
| Flip Hoogeveen | 8/10 | 2937 days | 4% |
| Chaulet | 5/10 | 2940 days | 3% |
| Felix Koehler | 4/10 | 2941 days | 3% |
| Kristina Nunoz | 7/10 | 2941 days | 4% |
| Becky Fox | 7/10 | 2943 days | 4% |
| Emma Millett | 8/10 | 2943 days | 4% |
| Rohzine | 7/10 | 2943 days | 4% |
| P and W Gene | 8/10 | 2944 days | 4% |
| Maaike | 8/10 | 2972 days | 4% |
| T Geelen | 8/10 | 2972 days | 4% |
| Wendy Steer | 8/10 | 2978 days | 4% |
| Marcel Felder | 7/10 | 2982 days | 4% |
| Jonas Gorb | 8/10 | 2986 days | 4% |
| Rahel | 7/10 | 2986 days | 4% |
| Maria Eriksson | 7/10 | 2989 days | 4% |
| Gilbert Baptiste | 8/10 | 2989 days | 4% |
| Emilie Bavard | 7/10 | 2989 days | 4% |
| Josh Bird | 7/10 | 2991 days | 4% |
| Jemima Brown | 7/10 | 2991 days | 4% |
| Aurelie Otis | 9/10 | 2993 days | 4% |
| Jake Bullin | 10/10 | 2995 days | 4% |
| Lisa | 10/10 | 2996 days | 4% |
| Bina Johansson | 10/10 | 3006 days | 4% |
| Sabrina and Hannes | 8/10 | 3009 days | 4% |
| Rogier Post | 7/10 | 3011 days | 4% |
| Michal Za'heryuk | 8/10 | 3013 days | 4% |
| Karine Dransart | 8/10 | 3017 days | 4% |
| Samuel Michalak | 7/10 | 3020 days | 4% |
| Ben | 7/10 | 3023 days | 4% |
| Julian Gury | 7/10 | 3026 days | 4% |
| Fazeel Ali | 10/10 | 3073 days | 4% |
| Anna | 10/10 | 3227 days | 3% |
| Jan Berendsen | 9/10 | 3231 days | 3% |
| Jorge Anderson | 8/10 | 3231 days | 3% |
| Simon Schatz | 8/10 | 3233 days | 3% |
| Thomas Le Buzulier | 8/10 | 3237 days | 3% |
| Kristina Breitwieser | 8/10 | 3238 days | 3% |
| Magali Schwantke | 8/10 | 3241 days | 3% |
| Laura Schratt | 6/10 | 3244 days | 3% |
| Mathilde Arp | 8/10 | 3244 days | 3% |
| Arnd Kohlen | 6/10 | 3244 days | 3% |
| Laerke Soee | 7/10 | 3245 days | 3% |
| Christian Krause | 9/10 | 3245 days | 3% |
| Mark | 8/10 | 3252 days | 3% |
| Hannes | 10/10 | 3256 days | 3% |
| Nathan Raymond | 10/10 | 3258 days | 3% |
| Rachel Bruce | 5/10 | 3259 days | 2% |
| Sunja Abbe | 9/10 | 3261 days | 3% |
| Kristof | 7/10 | 3263 days | 3% |
| Talissa Missiato | 10/10 | 3264 days | 3% |
| Eloise | 7/10 | 3264 days | 3% |
| Julia Scharbert | 8/10 | 3265 days | 3% |
| Severin Knegsch | 9/10 | 3265 days | 3% |
| Pierre Jouffineau | 9/10 | 3266 days | 3% |
| Floren Hoenschler | 7/10 | 3272 days | 3% |
| Johanna | 7/10 | 3272 days | 3% |
| Natasha Harbinson | 6/10 | 3276 days | 3% |
| Sophie Kalnymsky | 7/10 | 3279 days | 3% |
| Clemence and Pedro | 8/10 | 3280 days | 3% |
| Maxim Motheus | 8/10 | 3282 days | 3% |
| Mijke Boesten | 6/10 | 3283 days | 3% |
| Jan | 6/10 | 3286 days | 3% |
| Cindy Rizzo | 8/10 | 3289 days | 3% |
| Ulli | 10/10 | 3292 days | 3% |
| Anna Doßler | 9/10 | 3293 days | 3% |
| Dave O'Brien | 10/10 | 3295 days | 3% |
| Annett Kiessling | 7/10 | 3295 days | 3% |
| Chiara | 7/10 | 3297 days | 3% |
| Levi | 8/10 | 3299 days | 3% |
| Martin Baleja | 10/10 | 3300 days | 3% |
| Asborn Damgaard | 9/10 | 3304 days | 3% |
| Leo James | 8/10 | 3304 days | 3% |
| Sophie NIemann | 10/10 | 3305 days | 3% |
| Edwine | 8/10 | 3305 days | 3% |
| Jonathan and Gulsen | 10/10 | 3314 days | 3% |
| Tatiana | 10/10 | 3314 days | 3% |
| Valerie Balcom | 8/10 | 3314 days | 3% |
| Raviv Regev | 8/10 | 3329 days | 3% |
| Monika Dippel | 8/10 | 3332 days | 3% |
| Marc | 6/10 | 3332 days | 3% |
| Christine Slowiak | 8/10 | 3333 days | 3% |
| Justin Kechanski | 6/10 | 3333 days | 3% |
| Judith Goodyear | 7/10 | 3342 days | 3% |
| Hannah Fidora | 8/10 | 3345 days | 3% |
| Sarah Boettcher | 9/10 | 3393 days | 3% |
| Katherine Halliday | 9/10 | 3613 days | 2% |
| Christoph | 8/10 | 3614 days | 2% |
| Katherine Britten | 9/10 | 3616 days | 2% |
| Trevor Wichman | 9/10 | 3657 days | 2% |
| Jan Towers | 10/10 | 3956 days | 1% |
| isabel Zander | 7/10 | 3957 days | 1% |
| Corinne | 8/10 | 3959 days | 1% |
| Martin Sajdok | 5/10 | 3960 days | 1% |
| Camille Bellay | 7/10 | 3960 days | 1% |
| Garry Renton | 7/10 | 3965 days | 1% |
| Paula Renton | 7/10 | 3965 days | 1% |
| Simon Mehlmann | 7/10 | 3966 days | 1% |
| Carolin Siegert | 8/10 | 3966 days | 1% |
| Sarah Beyeler | 10/10 | 3988 days | 1% |
| Kim Lavener | 10/10 | 3988 days | 1% |
| Rosie | 7/10 | 3989 days | 1% |
| Anna Sternberg | 6/10 | 3990 days | 1% |
| Steffen | 9/10 | 3992 days | 1% |
| Nina Helmling | 8/10 | 3992 days | 1% |
| Friederike Kranzin | 7/10 | 3996 days | 1% |
| Guillaume | 6/10 | 3998 days | 1% |
| Roy Matthieu | 7/10 | 4000 days | 1% |
| Cindy Benayoum | 7/10 | 4000 days | 1% |
| Simon Tanguy | 8/10 | 4008 days | 1% |
| David Krasner | 9/10 | 4014 days | 1% |
| Susan | 8/10 | 4014 days | 1% |
| Jesseca Klausch | 6/10 | 4015 days | 1% |
| Vincent Schaeflier | 6/10 | 4015 days | 1% |
| Timothee Serres | 7/10 | 4019 days | 1% |
| Jesse Flynn | 6/10 | 4024 days | 1% |
| Claudia | 10/10 | 4026 days | 1% |
| Stuart Wilson | 8/10 | 4044 days | 1% |
| Marine | 9/10 | 4045 days | 1% |
| Supiot Zudovic | 10/10 | 4336 days | 0% |
| Iban Dupont | 7/10 | 4337 days | 0% |
| Guillaume Boudrand | 8/10 | 4337 days | 0% |
| Rampon | 9/10 | 4341 days | 0% |
| Jirka Sirka | 8/10 | 4342 days | 0% |
| Debiesse | 9/10 | 4342 days | 0% |
| Jitka Zenahlikova | 5/10 | 4346 days | 0% |
| Gale Willcocks | 10/10 | 4347 days | 0% |
| Ken Richardson | 8/10 | 4347 days | 0% |
| Cloarec Guillaume | 9/10 | 4349 days | 0% |
| Kathy Arthurs | 8/10 | 4354 days | 0% |
| Claire | 7/10 | 4354 days | 0% |
| Brendon Furney | 9/10 | 4358 days | 0% |
| Sanchez | 2/10 | 4366 days | 0% |
| Mary Neustroski | 9/10 | 4368 days | 0% |
| Scholler | 10/10 | 4413 days | 1% |
| Nadine and Jan | 8/10 | 4426 days | 1% |
| Frederick Neilsen | 8/10 | 4456 days | 1% |
| Paulmiriamgarry | 10/10 | 4597 days | 1% |
| Numa Brouimet | 7/10 | 4715 days | 1% |
| Virgil Anabel | 9/10 | 4715 days | 1% |
| Melanie Friessen | 6/10 | 4721 days | 1% |
| D van Dongen | 7/10 | 4723 days | 1% |
| David Perry | 8/10 | 4728 days | 1% |
| pamr | 8/10 | 4732 days | 1% |
| M Neuman | 8/10 | 4740 days | 1% |
| A Sorg | 10/10 | 4740 days | 1% |
| ge04jen | 7/10 | 4779 days | 1% |
| hendrik king | 7/10 | 4779 days | 1% |
| jule | 8/10 | 4840 days | 1% |
| Ryan Dorsey | 8/10 | 5082 days | 1% |
| Kathleen Brown | 8/10 | 5083 days | 1% |
| Pete H | 2/10 | 5459 days | 1% |
| hermine Petz | 2/10 | 5472 days | 1% |
| Mike Kirchner | 6/10 | 5474 days | 1% |
| Ann Grandchamp | 10/10 | 5492 days | 1% |
| Holliger | 7/10 | 5495 days | 1% |
| Kane Chain | 6/10 | 5495 days | 1% |
| Glenn Nicholson | 8/10 | 5498 days | 1% |
| sanneb1 | 7/10 | 5525 days | 1% |
| jamesg | 8/10 | 5538 days | 1% |
| Bas van Schagen | 7/10 | 5547 days | 1% |
| Des Longville | 7/10 | 5693 days | 1% |
| VirginiaR | 9/10 | 5776 days | 1% |
| Raewyn | 7/10 | 5781 days | 1% |
| Sally477 | 9/10 | 5784 days | 1% |
| Limor | 9/10 | 5855 days | 1% |
| Hove | 8/10 | 5856 days | 1% |
| Lieke | 8/10 | 5856 days | 1% |
| martin piper | 8/10 | 5859 days | 1% |
| purplekat99 | 10/10 | 5905 days | 1% |
| Patricia | 10/10 | 5905 days | 1% |
| Tiana | 8/10 | 5923 days | 1% |
| Raey | 10/10 | 5981 days | 1% |
| Carmen | 3/10 | 6036 days | 1% |
| Dave | 7/10 | 6043 days | 1% |
| Sheila Haran | 7/10 | 6156 days | 1% |
| Caroline Cole | 4/10 | 6161 days | 1% |
| Wendy | 8/10 | 6168 days | 1% |
| Annette Hurst | 8/10 | 6174 days | 1% |
| Phil Connelly | 7/10 | 6176 days | 1% |
| Andria Davis | 9/10 | 6177 days | 1% |
| Georgina Mulligan | 7/10 | 6177 days | 1% |
| Claire Masling | 8/10 | 6184 days | 1% |
| Christian Schwerdt | 7/10 | 6185 days | 1% |
| Jackie Horwell | 10/10 | 6185 days | 1% |
| Gustavo | 7/10 | 6185 days | 1% |
| Sean Pierce | 5/10 | 6189 days | 1% |
| Roger and Heather Smith | 10/10 | 6189 days | 1% |
| Tobias Rahm | 10/10 | 6189 days | 1% |
| Roman | 6/10 | 6195 days | 1% |
| ranker_851 | 8/10 | 6195 days | 1% |
| Vaclaf | 8/10 | 6195 days | 1% |
| Sebastian Bleck | 7/10 | 6199 days | 1% |
| Emma Dolk | 4/10 | 6200 days | 1% |
| Sheryl | 8/10 | 6220 days | 1% |
| David | 8/10 | 6230 days | 1% |
| Iain | 6/10 | 6231 days | 1% |
| Fred and Tim | 7/10 | 6265 days | 1% |
| George | 9/10 | 6500 days | 1% |
| Matous | 7/10 | 6505 days | 1% |
| clairekidd | 7/10 | 6513 days | 1% |
| Jonas | 3/10 | 6519 days | 1% |
| Stefan | 7/10 | 6544 days | 1% |
| Stefan | 8/10 | 6554 days | 1% |
| Justin | 9/10 | 6554 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
-4.14% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 49 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 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -4.08% |
| 198 | -4.10% |
| 199 | -4.12% |
| 200 | -4.14% |
| 201 | -4.16% |
| 202 | -4.18% |
| 203 | -4.20% |
| … | … |
Balancing Adjustment
16.89% 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
73%
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.