Hey, 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
59.77%
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 | 659 days | 100% |
| SBlu | 1/10 | 690 days | 39% |
| James Fuller | 3/10 | 721 days | 51% |
| Mark | 4/10 | 751 days | 59% |
| Véronique Laplante | 1/10 | 751 days | 37% |
| Brian symmes | 1/10 | 751 days | 37% |
| R. Armstrong | 5/10 | 782 days | 66% |
| Sandy | 1/10 | 965 days | 25% |
| Jonathan | 1/10 | 1116 days | 18% |
| PeteR | 3/10 | 1147 days | 23% |
| La Vie | 1/10 | 1330 days | 10% |
| Pauline Kane | 10/10 | 1908 days | 6% |
| Roy Sandbrook | 10/10 | 2061 days | 6% |
| Nickclev | 3/10 | 2092 days | 3% |
| Pepe Huebner | 4/10 | 2516 days | 3% |
| Jennie Tollerton | 8/10 | 2578 days | 5% |
| Phil Baker | 9/10 | 2581 days | 5% |
| Lily Roelofs | 1/10 | 2608 days | 2% |
| Vince Midmore | 1/10 | 2850 days | 2% |
| Francesca Scott | 10/10 | 2858 days | 4% |
| Erna Muller | 9/10 | 2866 days | 4% |
| Flip Hoogeveen | 8/10 | 2866 days | 4% |
| Chaulet | 5/10 | 2869 days | 3% |
| Felix Koehler | 4/10 | 2870 days | 3% |
| Kristina Nunoz | 7/10 | 2870 days | 4% |
| Becky Fox | 7/10 | 2872 days | 4% |
| Emma Millett | 8/10 | 2872 days | 4% |
| Rohzine | 7/10 | 2872 days | 4% |
| P and W Gene | 8/10 | 2873 days | 4% |
| Maaike | 8/10 | 2901 days | 4% |
| T Geelen | 8/10 | 2901 days | 4% |
| Wendy Steer | 8/10 | 2907 days | 4% |
| Marcel Felder | 7/10 | 2911 days | 3% |
| Jonas Gorb | 8/10 | 2915 days | 4% |
| Rahel | 7/10 | 2915 days | 3% |
| Maria Eriksson | 7/10 | 2918 days | 3% |
| Gilbert Baptiste | 8/10 | 2918 days | 4% |
| Emilie Bavard | 7/10 | 2918 days | 3% |
| Josh Bird | 7/10 | 2920 days | 3% |
| Jemima Brown | 7/10 | 2920 days | 3% |
| Aurelie Otis | 9/10 | 2922 days | 4% |
| Jake Bullin | 10/10 | 2924 days | 4% |
| Lisa | 10/10 | 2925 days | 4% |
| Bina Johansson | 10/10 | 2935 days | 4% |
| Sabrina and Hannes | 8/10 | 2938 days | 4% |
| Rogier Post | 7/10 | 2940 days | 3% |
| Michal Za'heryuk | 8/10 | 2942 days | 4% |
| Karine Dransart | 8/10 | 2946 days | 4% |
| Samuel Michalak | 7/10 | 2949 days | 3% |
| Ben | 7/10 | 2952 days | 3% |
| Julian Gury | 7/10 | 2955 days | 3% |
| Fazeel Ali | 10/10 | 3003 days | 4% |
| Anna | 10/10 | 3156 days | 3% |
| Jan Berendsen | 9/10 | 3160 days | 3% |
| Jorge Anderson | 8/10 | 3160 days | 3% |
| Simon Schatz | 8/10 | 3162 days | 3% |
| Thomas Le Buzulier | 8/10 | 3166 days | 3% |
| Kristina Breitwieser | 8/10 | 3167 days | 3% |
| Magali Schwantke | 8/10 | 3170 days | 3% |
| Laura Schratt | 6/10 | 3173 days | 3% |
| Mathilde Arp | 8/10 | 3173 days | 3% |
| Arnd Kohlen | 6/10 | 3173 days | 3% |
| Laerke Soee | 7/10 | 3174 days | 3% |
| Christian Krause | 9/10 | 3174 days | 3% |
| Mark | 8/10 | 3181 days | 3% |
| Hannes | 10/10 | 3185 days | 3% |
| Nathan Raymond | 10/10 | 3187 days | 3% |
| Rachel Bruce | 5/10 | 3188 days | 2% |
| Sunja Abbe | 9/10 | 3190 days | 3% |
| Kristof | 7/10 | 3192 days | 3% |
| Talissa Missiato | 10/10 | 3193 days | 3% |
| Eloise | 7/10 | 3193 days | 3% |
| Julia Scharbert | 8/10 | 3194 days | 3% |
| Severin Knegsch | 9/10 | 3194 days | 3% |
| Pierre Jouffineau | 9/10 | 3195 days | 3% |
| Floren Hoenschler | 7/10 | 3201 days | 3% |
| Johanna | 7/10 | 3201 days | 3% |
| Natasha Harbinson | 6/10 | 3205 days | 3% |
| Sophie Kalnymsky | 7/10 | 3208 days | 3% |
| Clemence and Pedro | 8/10 | 3209 days | 3% |
| Maxim Motheus | 8/10 | 3211 days | 3% |
| Mijke Boesten | 6/10 | 3212 days | 3% |
| Jan | 6/10 | 3215 days | 3% |
| Cindy Rizzo | 8/10 | 3218 days | 3% |
| Ulli | 10/10 | 3221 days | 3% |
| Anna Doßler | 9/10 | 3222 days | 3% |
| Dave O'Brien | 10/10 | 3224 days | 3% |
| Annett Kiessling | 7/10 | 3224 days | 3% |
| Chiara | 7/10 | 3226 days | 3% |
| Levi | 8/10 | 3228 days | 3% |
| Martin Baleja | 10/10 | 3229 days | 3% |
| Asborn Damgaard | 9/10 | 3233 days | 3% |
| Leo James | 8/10 | 3233 days | 3% |
| Sophie NIemann | 10/10 | 3234 days | 3% |
| Edwine | 8/10 | 3234 days | 3% |
| Jonathan and Gulsen | 10/10 | 3243 days | 3% |
| Tatiana | 10/10 | 3243 days | 3% |
| Valerie Balcom | 8/10 | 3243 days | 3% |
| Raviv Regev | 8/10 | 3258 days | 3% |
| Monika Dippel | 8/10 | 3261 days | 3% |
| Marc | 6/10 | 3261 days | 2% |
| Christine Slowiak | 8/10 | 3262 days | 3% |
| Justin Kechanski | 6/10 | 3262 days | 2% |
| Judith Goodyear | 7/10 | 3271 days | 3% |
| Hannah Fidora | 8/10 | 3274 days | 3% |
| Sarah Boettcher | 9/10 | 3322 days | 3% |
| Katherine Halliday | 9/10 | 3542 days | 2% |
| Christoph | 8/10 | 3543 days | 2% |
| Katherine Britten | 9/10 | 3545 days | 2% |
| Trevor Wichman | 9/10 | 3586 days | 2% |
| Jan Towers | 10/10 | 3885 days | 1% |
| isabel Zander | 7/10 | 3886 days | 1% |
| Corinne | 8/10 | 3888 days | 1% |
| Martin Sajdok | 5/10 | 3889 days | 1% |
| Camille Bellay | 7/10 | 3889 days | 1% |
| Garry Renton | 7/10 | 3894 days | 1% |
| Paula Renton | 7/10 | 3894 days | 1% |
| Simon Mehlmann | 7/10 | 3895 days | 1% |
| Carolin Siegert | 8/10 | 3895 days | 1% |
| Sarah Beyeler | 10/10 | 3917 days | 1% |
| Kim Lavener | 10/10 | 3917 days | 1% |
| Rosie | 7/10 | 3918 days | 1% |
| Anna Sternberg | 6/10 | 3919 days | 1% |
| Steffen | 9/10 | 3921 days | 1% |
| Nina Helmling | 8/10 | 3921 days | 1% |
| Friederike Kranzin | 7/10 | 3925 days | 1% |
| Guillaume | 6/10 | 3927 days | 1% |
| Roy Matthieu | 7/10 | 3929 days | 1% |
| Cindy Benayoum | 7/10 | 3929 days | 1% |
| Simon Tanguy | 8/10 | 3937 days | 1% |
| David Krasner | 9/10 | 3943 days | 1% |
| Susan | 8/10 | 3943 days | 1% |
| Jesseca Klausch | 6/10 | 3944 days | 1% |
| Vincent Schaeflier | 6/10 | 3944 days | 1% |
| Timothee Serres | 7/10 | 3948 days | 1% |
| Jesse Flynn | 6/10 | 3953 days | 1% |
| Claudia | 10/10 | 3955 days | 1% |
| Stuart Wilson | 8/10 | 3973 days | 1% |
| Marine | 9/10 | 3974 days | 1% |
| Supiot Zudovic | 10/10 | 4265 days | 0% |
| Iban Dupont | 7/10 | 4266 days | 0% |
| Guillaume Boudrand | 8/10 | 4266 days | 0% |
| Rampon | 9/10 | 4270 days | 0% |
| Jirka Sirka | 8/10 | 4271 days | 0% |
| Debiesse | 9/10 | 4271 days | 0% |
| Jitka Zenahlikova | 5/10 | 4275 days | 0% |
| Gale Willcocks | 10/10 | 4276 days | 0% |
| Ken Richardson | 8/10 | 4276 days | 0% |
| Cloarec Guillaume | 9/10 | 4278 days | 0% |
| Kathy Arthurs | 8/10 | 4283 days | 0% |
| Claire | 7/10 | 4283 days | 0% |
| Brendon Furney | 9/10 | 4287 days | 0% |
| Sanchez | 2/10 | 4295 days | 0% |
| Mary Neustroski | 9/10 | 4297 days | 0% |
| Scholler | 10/10 | 4342 days | 0% |
| Nadine and Jan | 8/10 | 4355 days | 0% |
| Frederick Neilsen | 8/10 | 4385 days | 1% |
| Paulmiriamgarry | 10/10 | 4526 days | 1% |
| Numa Brouimet | 7/10 | 4644 days | 1% |
| Virgil Anabel | 9/10 | 4644 days | 1% |
| Melanie Friessen | 6/10 | 4650 days | 1% |
| D van Dongen | 7/10 | 4652 days | 1% |
| David Perry | 8/10 | 4657 days | 1% |
| pamr | 8/10 | 4661 days | 1% |
| M Neuman | 8/10 | 4669 days | 1% |
| A Sorg | 10/10 | 4669 days | 1% |
| ge04jen | 7/10 | 4708 days | 1% |
| hendrik king | 7/10 | 4708 days | 1% |
| jule | 8/10 | 4769 days | 1% |
| Ryan Dorsey | 8/10 | 5011 days | 1% |
| Kathleen Brown | 8/10 | 5012 days | 1% |
| Pete H | 2/10 | 5388 days | 1% |
| hermine Petz | 2/10 | 5401 days | 1% |
| Mike Kirchner | 6/10 | 5403 days | 1% |
| Ann Grandchamp | 10/10 | 5421 days | 1% |
| Holliger | 7/10 | 5424 days | 1% |
| Kane Chain | 6/10 | 5424 days | 1% |
| Glenn Nicholson | 8/10 | 5427 days | 1% |
| sanneb1 | 7/10 | 5454 days | 1% |
| jamesg | 8/10 | 5467 days | 1% |
| Bas van Schagen | 7/10 | 5476 days | 1% |
| Des Longville | 7/10 | 5622 days | 1% |
| VirginiaR | 9/10 | 5705 days | 1% |
| Raewyn | 7/10 | 5710 days | 1% |
| Sally477 | 9/10 | 5714 days | 1% |
| Limor | 9/10 | 5785 days | 1% |
| Hove | 8/10 | 5786 days | 1% |
| Lieke | 8/10 | 5786 days | 1% |
| martin piper | 8/10 | 5789 days | 1% |
| purplekat99 | 10/10 | 5834 days | 1% |
| Patricia | 10/10 | 5835 days | 1% |
| Tiana | 8/10 | 5853 days | 1% |
| Raey | 10/10 | 5911 days | 1% |
| Carmen | 3/10 | 5966 days | 1% |
| Dave | 7/10 | 5973 days | 1% |
| Sheila Haran | 7/10 | 6085 days | 1% |
| Caroline Cole | 4/10 | 6090 days | 1% |
| Wendy | 8/10 | 6097 days | 1% |
| Annette Hurst | 8/10 | 6103 days | 1% |
| Phil Connelly | 7/10 | 6105 days | 1% |
| Andria Davis | 9/10 | 6106 days | 1% |
| Georgina Mulligan | 7/10 | 6106 days | 1% |
| Claire Masling | 8/10 | 6113 days | 1% |
| Christian Schwerdt | 7/10 | 6114 days | 1% |
| Jackie Horwell | 10/10 | 6114 days | 1% |
| Gustavo | 7/10 | 6114 days | 1% |
| Sean Pierce | 5/10 | 6118 days | 1% |
| Roger and Heather Smith | 10/10 | 6118 days | 1% |
| Tobias Rahm | 10/10 | 6118 days | 1% |
| Roman | 6/10 | 6124 days | 1% |
| ranker_851 | 8/10 | 6124 days | 1% |
| Vaclaf | 8/10 | 6124 days | 1% |
| Sebastian Bleck | 7/10 | 6128 days | 1% |
| Emma Dolk | 4/10 | 6129 days | 1% |
| Sheryl | 8/10 | 6150 days | 1% |
| David | 8/10 | 6159 days | 1% |
| Iain | 6/10 | 6160 days | 1% |
| Fred and Tim | 7/10 | 6194 days | 1% |
| George | 9/10 | 6429 days | 1% |
| Matous | 7/10 | 6434 days | 1% |
| clairekidd | 7/10 | 6442 days | 1% |
| Jonas | 3/10 | 6448 days | 1% |
| Stefan | 7/10 | 6473 days | 1% |
| Stefan | 8/10 | 6483 days | 1% |
| Justin | 9/10 | 6483 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
-4.05% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 43 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 | -3.99% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 201 | -4.07% |
| 202 | -4.09% |
| 203 | -4.11% |
| … | … |
Balancing Adjustment
17.42% 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.