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.
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
60.12%
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 | 694 days | 100% |
| SBlu | 1/10 | 725 days | 39% |
| James Fuller | 3/10 | 756 days | 51% |
| Mark | 4/10 | 786 days | 58% |
| Véronique Laplante | 1/10 | 786 days | 36% |
| Brian symmes | 1/10 | 786 days | 36% |
| R. Armstrong | 5/10 | 817 days | 65% |
| Sandy | 1/10 | 1000 days | 25% |
| Jonathan | 1/10 | 1151 days | 17% |
| PeteR | 3/10 | 1182 days | 21% |
| La Vie | 1/10 | 1365 days | 10% |
| Pauline Kane | 10/10 | 1943 days | 7% |
| Roy Sandbrook | 10/10 | 2096 days | 6% |
| Nickclev | 3/10 | 2127 days | 3% |
| Pepe Huebner | 4/10 | 2550 days | 3% |
| Jennie Tollerton | 8/10 | 2613 days | 5% |
| Phil Baker | 9/10 | 2616 days | 5% |
| Lily Roelofs | 1/10 | 2642 days | 2% |
| Vince Midmore | 1/10 | 2884 days | 2% |
| Francesca Scott | 10/10 | 2893 days | 4% |
| Erna Muller | 9/10 | 2901 days | 4% |
| Flip Hoogeveen | 8/10 | 2901 days | 4% |
| Chaulet | 5/10 | 2904 days | 3% |
| Felix Koehler | 4/10 | 2905 days | 3% |
| Kristina Nunoz | 7/10 | 2905 days | 4% |
| Becky Fox | 7/10 | 2907 days | 4% |
| Emma Millett | 8/10 | 2907 days | 4% |
| Rohzine | 7/10 | 2907 days | 4% |
| P and W Gene | 8/10 | 2908 days | 4% |
| Maaike | 8/10 | 2936 days | 4% |
| T Geelen | 8/10 | 2936 days | 4% |
| Wendy Steer | 8/10 | 2942 days | 4% |
| Marcel Felder | 7/10 | 2946 days | 4% |
| Jonas Gorb | 8/10 | 2950 days | 4% |
| Rahel | 7/10 | 2950 days | 4% |
| Maria Eriksson | 7/10 | 2953 days | 4% |
| Gilbert Baptiste | 8/10 | 2953 days | 4% |
| Emilie Bavard | 7/10 | 2953 days | 4% |
| Josh Bird | 7/10 | 2955 days | 4% |
| Jemima Brown | 7/10 | 2955 days | 4% |
| Aurelie Otis | 9/10 | 2957 days | 4% |
| Jake Bullin | 10/10 | 2959 days | 4% |
| Lisa | 10/10 | 2960 days | 4% |
| Bina Johansson | 10/10 | 2970 days | 4% |
| Sabrina and Hannes | 8/10 | 2973 days | 4% |
| Rogier Post | 7/10 | 2975 days | 4% |
| Michal Za'heryuk | 8/10 | 2977 days | 4% |
| Karine Dransart | 8/10 | 2981 days | 4% |
| Samuel Michalak | 7/10 | 2984 days | 3% |
| Ben | 7/10 | 2987 days | 3% |
| Julian Gury | 7/10 | 2990 days | 3% |
| Fazeel Ali | 10/10 | 3037 days | 4% |
| Anna | 10/10 | 3191 days | 3% |
| Jan Berendsen | 9/10 | 3195 days | 3% |
| Jorge Anderson | 8/10 | 3195 days | 3% |
| Simon Schatz | 8/10 | 3197 days | 3% |
| Thomas Le Buzulier | 8/10 | 3201 days | 3% |
| Kristina Breitwieser | 8/10 | 3202 days | 3% |
| Magali Schwantke | 8/10 | 3205 days | 3% |
| Laura Schratt | 6/10 | 3208 days | 3% |
| Mathilde Arp | 8/10 | 3208 days | 3% |
| Arnd Kohlen | 6/10 | 3208 days | 3% |
| Laerke Soee | 7/10 | 3209 days | 3% |
| Christian Krause | 9/10 | 3209 days | 3% |
| Mark | 8/10 | 3216 days | 3% |
| Hannes | 10/10 | 3220 days | 3% |
| Nathan Raymond | 10/10 | 3222 days | 3% |
| Rachel Bruce | 5/10 | 3223 days | 2% |
| Sunja Abbe | 9/10 | 3225 days | 3% |
| Kristof | 7/10 | 3227 days | 3% |
| Talissa Missiato | 10/10 | 3228 days | 3% |
| Eloise | 7/10 | 3228 days | 3% |
| Julia Scharbert | 8/10 | 3229 days | 3% |
| Severin Knegsch | 9/10 | 3229 days | 3% |
| Pierre Jouffineau | 9/10 | 3230 days | 3% |
| Floren Hoenschler | 7/10 | 3236 days | 3% |
| Johanna | 7/10 | 3236 days | 3% |
| Natasha Harbinson | 6/10 | 3240 days | 3% |
| Sophie Kalnymsky | 7/10 | 3243 days | 3% |
| Clemence and Pedro | 8/10 | 3244 days | 3% |
| Maxim Motheus | 8/10 | 3246 days | 3% |
| Mijke Boesten | 6/10 | 3247 days | 3% |
| Jan | 6/10 | 3250 days | 3% |
| Cindy Rizzo | 8/10 | 3253 days | 3% |
| Ulli | 10/10 | 3256 days | 3% |
| Anna Doßler | 9/10 | 3257 days | 3% |
| Dave O'Brien | 10/10 | 3259 days | 3% |
| Annett Kiessling | 7/10 | 3259 days | 3% |
| Chiara | 7/10 | 3261 days | 3% |
| Levi | 8/10 | 3263 days | 3% |
| Martin Baleja | 10/10 | 3264 days | 3% |
| Asborn Damgaard | 9/10 | 3268 days | 3% |
| Leo James | 8/10 | 3268 days | 3% |
| Sophie NIemann | 10/10 | 3269 days | 3% |
| Edwine | 8/10 | 3269 days | 3% |
| Jonathan and Gulsen | 10/10 | 3278 days | 3% |
| Tatiana | 10/10 | 3278 days | 3% |
| Valerie Balcom | 8/10 | 3278 days | 3% |
| Raviv Regev | 8/10 | 3293 days | 3% |
| Monika Dippel | 8/10 | 3296 days | 3% |
| Marc | 6/10 | 3296 days | 3% |
| Christine Slowiak | 8/10 | 3297 days | 3% |
| Justin Kechanski | 6/10 | 3297 days | 3% |
| Judith Goodyear | 7/10 | 3306 days | 3% |
| Hannah Fidora | 8/10 | 3309 days | 3% |
| Sarah Boettcher | 9/10 | 3357 days | 3% |
| Katherine Halliday | 9/10 | 3577 days | 2% |
| Christoph | 8/10 | 3578 days | 2% |
| Katherine Britten | 9/10 | 3580 days | 2% |
| Trevor Wichman | 9/10 | 3621 days | 2% |
| Jan Towers | 10/10 | 3920 days | 1% |
| isabel Zander | 7/10 | 3921 days | 1% |
| Corinne | 8/10 | 3923 days | 1% |
| Martin Sajdok | 5/10 | 3924 days | 1% |
| Camille Bellay | 7/10 | 3924 days | 1% |
| Garry Renton | 7/10 | 3929 days | 1% |
| Paula Renton | 7/10 | 3929 days | 1% |
| Simon Mehlmann | 7/10 | 3930 days | 1% |
| Carolin Siegert | 8/10 | 3930 days | 1% |
| Sarah Beyeler | 10/10 | 3952 days | 1% |
| Kim Lavener | 10/10 | 3952 days | 1% |
| Rosie | 7/10 | 3953 days | 1% |
| Anna Sternberg | 6/10 | 3954 days | 1% |
| Steffen | 9/10 | 3956 days | 1% |
| Nina Helmling | 8/10 | 3956 days | 1% |
| Friederike Kranzin | 7/10 | 3960 days | 1% |
| Guillaume | 6/10 | 3962 days | 1% |
| Roy Matthieu | 7/10 | 3964 days | 1% |
| Cindy Benayoum | 7/10 | 3964 days | 1% |
| Simon Tanguy | 8/10 | 3972 days | 1% |
| David Krasner | 9/10 | 3978 days | 1% |
| Susan | 8/10 | 3978 days | 1% |
| Jesseca Klausch | 6/10 | 3979 days | 1% |
| Vincent Schaeflier | 6/10 | 3979 days | 1% |
| Timothee Serres | 7/10 | 3983 days | 1% |
| Jesse Flynn | 6/10 | 3988 days | 1% |
| Claudia | 10/10 | 3990 days | 1% |
| Stuart Wilson | 8/10 | 4008 days | 1% |
| Marine | 9/10 | 4009 days | 1% |
| Supiot Zudovic | 10/10 | 4300 days | 0% |
| Iban Dupont | 7/10 | 4301 days | 0% |
| Guillaume Boudrand | 8/10 | 4301 days | 0% |
| Rampon | 9/10 | 4305 days | 0% |
| Jirka Sirka | 8/10 | 4306 days | 0% |
| Debiesse | 9/10 | 4306 days | 0% |
| Jitka Zenahlikova | 5/10 | 4310 days | 0% |
| Gale Willcocks | 10/10 | 4311 days | 0% |
| Ken Richardson | 8/10 | 4311 days | 0% |
| Cloarec Guillaume | 9/10 | 4313 days | 0% |
| Kathy Arthurs | 8/10 | 4318 days | 0% |
| Claire | 7/10 | 4318 days | 0% |
| Brendon Furney | 9/10 | 4322 days | 0% |
| Sanchez | 2/10 | 4330 days | 0% |
| Mary Neustroski | 9/10 | 4332 days | 0% |
| Scholler | 10/10 | 4377 days | 0% |
| Nadine and Jan | 8/10 | 4390 days | 1% |
| Frederick Neilsen | 8/10 | 4420 days | 1% |
| Paulmiriamgarry | 10/10 | 4561 days | 1% |
| Numa Brouimet | 7/10 | 4679 days | 1% |
| Virgil Anabel | 9/10 | 4679 days | 1% |
| Melanie Friessen | 6/10 | 4685 days | 1% |
| D van Dongen | 7/10 | 4687 days | 1% |
| David Perry | 8/10 | 4692 days | 1% |
| pamr | 8/10 | 4696 days | 1% |
| M Neuman | 8/10 | 4704 days | 1% |
| A Sorg | 10/10 | 4704 days | 1% |
| ge04jen | 7/10 | 4743 days | 1% |
| hendrik king | 7/10 | 4743 days | 1% |
| jule | 8/10 | 4804 days | 1% |
| Ryan Dorsey | 8/10 | 5046 days | 1% |
| Kathleen Brown | 8/10 | 5047 days | 1% |
| Pete H | 2/10 | 5423 days | 1% |
| hermine Petz | 2/10 | 5436 days | 1% |
| Mike Kirchner | 6/10 | 5438 days | 1% |
| Ann Grandchamp | 10/10 | 5456 days | 1% |
| Holliger | 7/10 | 5459 days | 1% |
| Kane Chain | 6/10 | 5459 days | 1% |
| Glenn Nicholson | 8/10 | 5462 days | 1% |
| sanneb1 | 7/10 | 5489 days | 1% |
| jamesg | 8/10 | 5502 days | 1% |
| Bas van Schagen | 7/10 | 5511 days | 1% |
| Des Longville | 7/10 | 5657 days | 1% |
| VirginiaR | 9/10 | 5740 days | 1% |
| Raewyn | 7/10 | 5745 days | 1% |
| Sally477 | 9/10 | 5749 days | 1% |
| Limor | 9/10 | 5819 days | 1% |
| Hove | 8/10 | 5820 days | 1% |
| Lieke | 8/10 | 5820 days | 1% |
| martin piper | 8/10 | 5824 days | 1% |
| purplekat99 | 10/10 | 5869 days | 1% |
| Patricia | 10/10 | 5869 days | 1% |
| Tiana | 8/10 | 5887 days | 1% |
| Raey | 10/10 | 5945 days | 1% |
| Carmen | 3/10 | 6000 days | 1% |
| Dave | 7/10 | 6007 days | 1% |
| Sheila Haran | 7/10 | 6120 days | 1% |
| Caroline Cole | 4/10 | 6125 days | 1% |
| Wendy | 8/10 | 6132 days | 1% |
| Annette Hurst | 8/10 | 6138 days | 1% |
| Phil Connelly | 7/10 | 6140 days | 1% |
| Andria Davis | 9/10 | 6141 days | 1% |
| Georgina Mulligan | 7/10 | 6141 days | 1% |
| Claire Masling | 8/10 | 6148 days | 1% |
| Christian Schwerdt | 7/10 | 6149 days | 1% |
| Jackie Horwell | 10/10 | 6149 days | 1% |
| Gustavo | 7/10 | 6149 days | 1% |
| Sean Pierce | 5/10 | 6153 days | 1% |
| Roger and Heather Smith | 10/10 | 6153 days | 1% |
| Tobias Rahm | 10/10 | 6153 days | 1% |
| Roman | 6/10 | 6159 days | 1% |
| ranker_851 | 8/10 | 6159 days | 1% |
| Vaclaf | 8/10 | 6159 days | 1% |
| Sebastian Bleck | 7/10 | 6163 days | 1% |
| Emma Dolk | 4/10 | 6164 days | 1% |
| Sheryl | 8/10 | 6185 days | 1% |
| David | 8/10 | 6194 days | 1% |
| Iain | 6/10 | 6195 days | 1% |
| Fred and Tim | 7/10 | 6229 days | 1% |
| George | 9/10 | 6464 days | 1% |
| Matous | 7/10 | 6469 days | 1% |
| clairekidd | 7/10 | 6477 days | 1% |
| Jonas | 3/10 | 6483 days | 1% |
| Stefan | 7/10 | 6508 days | 1% |
| Stefan | 8/10 | 6518 days | 1% |
| Justin | 9/10 | 6518 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
-4.02% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 41 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 | -3.96% |
| 198 | -3.98% |
| 199 | -4.00% |
| 200 | -4.02% |
| 201 | -4.04% |
| 202 | -4.06% |
| 203 | -4.08% |
| … | … |
Balancing Adjustment
17.12% 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.