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
59.89%
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 | 673 days | 100% |
| SBlu | 1/10 | 704 days | 39% |
| James Fuller | 3/10 | 735 days | 51% |
| Mark | 4/10 | 765 days | 59% |
| Véronique Laplante | 1/10 | 765 days | 36% |
| Brian symmes | 1/10 | 765 days | 36% |
| R. Armstrong | 5/10 | 796 days | 66% |
| Sandy | 1/10 | 979 days | 25% |
| Jonathan | 1/10 | 1130 days | 18% |
| PeteR | 3/10 | 1161 days | 22% |
| La Vie | 1/10 | 1344 days | 10% |
| Pauline Kane | 10/10 | 1922 days | 6% |
| Roy Sandbrook | 10/10 | 2075 days | 6% |
| Nickclev | 3/10 | 2106 days | 3% |
| Pepe Huebner | 4/10 | 2530 days | 3% |
| Jennie Tollerton | 8/10 | 2592 days | 5% |
| Phil Baker | 9/10 | 2595 days | 5% |
| Lily Roelofs | 1/10 | 2622 days | 2% |
| Vince Midmore | 1/10 | 2864 days | 2% |
| Francesca Scott | 10/10 | 2872 days | 4% |
| Erna Muller | 9/10 | 2880 days | 4% |
| Flip Hoogeveen | 8/10 | 2880 days | 4% |
| Chaulet | 5/10 | 2883 days | 3% |
| Felix Koehler | 4/10 | 2884 days | 3% |
| Kristina Nunoz | 7/10 | 2884 days | 4% |
| Becky Fox | 7/10 | 2886 days | 4% |
| Emma Millett | 8/10 | 2886 days | 4% |
| Rohzine | 7/10 | 2886 days | 4% |
| P and W Gene | 8/10 | 2887 days | 4% |
| Maaike | 8/10 | 2915 days | 4% |
| T Geelen | 8/10 | 2915 days | 4% |
| Wendy Steer | 8/10 | 2921 days | 4% |
| Marcel Felder | 7/10 | 2925 days | 4% |
| Jonas Gorb | 8/10 | 2929 days | 4% |
| Rahel | 7/10 | 2929 days | 4% |
| Maria Eriksson | 7/10 | 2932 days | 4% |
| Gilbert Baptiste | 8/10 | 2932 days | 4% |
| Emilie Bavard | 7/10 | 2932 days | 4% |
| Josh Bird | 7/10 | 2934 days | 4% |
| Jemima Brown | 7/10 | 2934 days | 4% |
| Aurelie Otis | 9/10 | 2936 days | 4% |
| Jake Bullin | 10/10 | 2938 days | 4% |
| Lisa | 10/10 | 2939 days | 4% |
| Bina Johansson | 10/10 | 2949 days | 4% |
| Sabrina and Hannes | 8/10 | 2952 days | 4% |
| Rogier Post | 7/10 | 2954 days | 3% |
| Michal Za'heryuk | 8/10 | 2956 days | 4% |
| Karine Dransart | 8/10 | 2960 days | 4% |
| Samuel Michalak | 7/10 | 2963 days | 3% |
| Ben | 7/10 | 2966 days | 3% |
| Julian Gury | 7/10 | 2969 days | 3% |
| Fazeel Ali | 10/10 | 3017 days | 4% |
| Anna | 10/10 | 3170 days | 3% |
| Jan Berendsen | 9/10 | 3174 days | 3% |
| Jorge Anderson | 8/10 | 3174 days | 3% |
| Simon Schatz | 8/10 | 3176 days | 3% |
| Thomas Le Buzulier | 8/10 | 3180 days | 3% |
| Kristina Breitwieser | 8/10 | 3181 days | 3% |
| Magali Schwantke | 8/10 | 3184 days | 3% |
| Laura Schratt | 6/10 | 3187 days | 3% |
| Mathilde Arp | 8/10 | 3187 days | 3% |
| Arnd Kohlen | 6/10 | 3187 days | 3% |
| Laerke Soee | 7/10 | 3188 days | 3% |
| Christian Krause | 9/10 | 3188 days | 3% |
| Mark | 8/10 | 3195 days | 3% |
| Hannes | 10/10 | 3199 days | 3% |
| Nathan Raymond | 10/10 | 3201 days | 3% |
| Rachel Bruce | 5/10 | 3202 days | 2% |
| Sunja Abbe | 9/10 | 3204 days | 3% |
| Kristof | 7/10 | 3206 days | 3% |
| Talissa Missiato | 10/10 | 3207 days | 3% |
| Eloise | 7/10 | 3207 days | 3% |
| Julia Scharbert | 8/10 | 3208 days | 3% |
| Severin Knegsch | 9/10 | 3208 days | 3% |
| Pierre Jouffineau | 9/10 | 3209 days | 3% |
| Floren Hoenschler | 7/10 | 3215 days | 3% |
| Johanna | 7/10 | 3215 days | 3% |
| Natasha Harbinson | 6/10 | 3219 days | 3% |
| Sophie Kalnymsky | 7/10 | 3222 days | 3% |
| Clemence and Pedro | 8/10 | 3223 days | 3% |
| Maxim Motheus | 8/10 | 3225 days | 3% |
| Mijke Boesten | 6/10 | 3226 days | 3% |
| Jan | 6/10 | 3229 days | 3% |
| Cindy Rizzo | 8/10 | 3232 days | 3% |
| Ulli | 10/10 | 3235 days | 3% |
| Anna Doßler | 9/10 | 3236 days | 3% |
| Dave O'Brien | 10/10 | 3238 days | 3% |
| Annett Kiessling | 7/10 | 3238 days | 3% |
| Chiara | 7/10 | 3240 days | 3% |
| Levi | 8/10 | 3242 days | 3% |
| Martin Baleja | 10/10 | 3243 days | 3% |
| Asborn Damgaard | 9/10 | 3247 days | 3% |
| Leo James | 8/10 | 3247 days | 3% |
| Sophie NIemann | 10/10 | 3248 days | 3% |
| Edwine | 8/10 | 3248 days | 3% |
| Jonathan and Gulsen | 10/10 | 3257 days | 3% |
| Tatiana | 10/10 | 3257 days | 3% |
| Valerie Balcom | 8/10 | 3257 days | 3% |
| Raviv Regev | 8/10 | 3272 days | 3% |
| Monika Dippel | 8/10 | 3275 days | 3% |
| Marc | 6/10 | 3275 days | 2% |
| Christine Slowiak | 8/10 | 3276 days | 3% |
| Justin Kechanski | 6/10 | 3276 days | 2% |
| Judith Goodyear | 7/10 | 3285 days | 3% |
| Hannah Fidora | 8/10 | 3288 days | 3% |
| Sarah Boettcher | 9/10 | 3336 days | 3% |
| Katherine Halliday | 9/10 | 3556 days | 2% |
| Christoph | 8/10 | 3557 days | 2% |
| Katherine Britten | 9/10 | 3559 days | 2% |
| Trevor Wichman | 9/10 | 3600 days | 2% |
| Jan Towers | 10/10 | 3899 days | 1% |
| isabel Zander | 7/10 | 3900 days | 1% |
| Corinne | 8/10 | 3902 days | 1% |
| Martin Sajdok | 5/10 | 3903 days | 1% |
| Camille Bellay | 7/10 | 3903 days | 1% |
| Garry Renton | 7/10 | 3908 days | 1% |
| Paula Renton | 7/10 | 3908 days | 1% |
| Simon Mehlmann | 7/10 | 3909 days | 1% |
| Carolin Siegert | 8/10 | 3909 days | 1% |
| Sarah Beyeler | 10/10 | 3931 days | 1% |
| Kim Lavener | 10/10 | 3931 days | 1% |
| Rosie | 7/10 | 3932 days | 1% |
| Anna Sternberg | 6/10 | 3933 days | 1% |
| Steffen | 9/10 | 3935 days | 1% |
| Nina Helmling | 8/10 | 3935 days | 1% |
| Friederike Kranzin | 7/10 | 3939 days | 1% |
| Guillaume | 6/10 | 3941 days | 1% |
| Roy Matthieu | 7/10 | 3943 days | 1% |
| Cindy Benayoum | 7/10 | 3943 days | 1% |
| Simon Tanguy | 8/10 | 3951 days | 1% |
| David Krasner | 9/10 | 3957 days | 1% |
| Susan | 8/10 | 3957 days | 1% |
| Jesseca Klausch | 6/10 | 3958 days | 1% |
| Vincent Schaeflier | 6/10 | 3958 days | 1% |
| Timothee Serres | 7/10 | 3962 days | 1% |
| Jesse Flynn | 6/10 | 3967 days | 1% |
| Claudia | 10/10 | 3969 days | 1% |
| Stuart Wilson | 8/10 | 3987 days | 1% |
| Marine | 9/10 | 3988 days | 1% |
| Supiot Zudovic | 10/10 | 4279 days | 0% |
| Iban Dupont | 7/10 | 4280 days | 0% |
| Guillaume Boudrand | 8/10 | 4280 days | 0% |
| Rampon | 9/10 | 4284 days | 0% |
| Jirka Sirka | 8/10 | 4285 days | 0% |
| Debiesse | 9/10 | 4285 days | 0% |
| Jitka Zenahlikova | 5/10 | 4289 days | 0% |
| Gale Willcocks | 10/10 | 4290 days | 0% |
| Ken Richardson | 8/10 | 4290 days | 0% |
| Cloarec Guillaume | 9/10 | 4292 days | 0% |
| Kathy Arthurs | 8/10 | 4297 days | 0% |
| Claire | 7/10 | 4297 days | 0% |
| Brendon Furney | 9/10 | 4301 days | 0% |
| Sanchez | 2/10 | 4309 days | 0% |
| Mary Neustroski | 9/10 | 4311 days | 0% |
| Scholler | 10/10 | 4356 days | 0% |
| Nadine and Jan | 8/10 | 4369 days | 0% |
| Frederick Neilsen | 8/10 | 4399 days | 1% |
| Paulmiriamgarry | 10/10 | 4540 days | 1% |
| Numa Brouimet | 7/10 | 4658 days | 1% |
| Virgil Anabel | 9/10 | 4658 days | 1% |
| Melanie Friessen | 6/10 | 4664 days | 1% |
| D van Dongen | 7/10 | 4666 days | 1% |
| David Perry | 8/10 | 4671 days | 1% |
| pamr | 8/10 | 4675 days | 1% |
| M Neuman | 8/10 | 4683 days | 1% |
| A Sorg | 10/10 | 4683 days | 1% |
| ge04jen | 7/10 | 4722 days | 1% |
| hendrik king | 7/10 | 4722 days | 1% |
| jule | 8/10 | 4783 days | 1% |
| Ryan Dorsey | 8/10 | 5025 days | 1% |
| Kathleen Brown | 8/10 | 5026 days | 1% |
| Pete H | 2/10 | 5402 days | 1% |
| hermine Petz | 2/10 | 5415 days | 1% |
| Mike Kirchner | 6/10 | 5417 days | 1% |
| Ann Grandchamp | 10/10 | 5435 days | 1% |
| Holliger | 7/10 | 5438 days | 1% |
| Kane Chain | 6/10 | 5438 days | 1% |
| Glenn Nicholson | 8/10 | 5441 days | 1% |
| sanneb1 | 7/10 | 5468 days | 1% |
| jamesg | 8/10 | 5481 days | 1% |
| Bas van Schagen | 7/10 | 5490 days | 1% |
| Des Longville | 7/10 | 5636 days | 1% |
| VirginiaR | 9/10 | 5719 days | 1% |
| Raewyn | 7/10 | 5724 days | 1% |
| Sally477 | 9/10 | 5728 days | 1% |
| Limor | 9/10 | 5798 days | 1% |
| Hove | 8/10 | 5799 days | 1% |
| Lieke | 8/10 | 5799 days | 1% |
| martin piper | 8/10 | 5803 days | 1% |
| purplekat99 | 10/10 | 5848 days | 1% |
| Patricia | 10/10 | 5849 days | 1% |
| Tiana | 8/10 | 5866 days | 1% |
| Raey | 10/10 | 5925 days | 1% |
| Carmen | 3/10 | 5979 days | 1% |
| Dave | 7/10 | 5986 days | 1% |
| Sheila Haran | 7/10 | 6099 days | 1% |
| Caroline Cole | 4/10 | 6104 days | 1% |
| Wendy | 8/10 | 6111 days | 1% |
| Annette Hurst | 8/10 | 6117 days | 1% |
| Phil Connelly | 7/10 | 6119 days | 1% |
| Andria Davis | 9/10 | 6120 days | 1% |
| Georgina Mulligan | 7/10 | 6120 days | 1% |
| Claire Masling | 8/10 | 6127 days | 1% |
| Christian Schwerdt | 7/10 | 6128 days | 1% |
| Jackie Horwell | 10/10 | 6128 days | 1% |
| Gustavo | 7/10 | 6128 days | 1% |
| Sean Pierce | 5/10 | 6132 days | 1% |
| Roger and Heather Smith | 10/10 | 6132 days | 1% |
| Tobias Rahm | 10/10 | 6132 days | 1% |
| Roman | 6/10 | 6138 days | 1% |
| ranker_851 | 8/10 | 6138 days | 1% |
| Vaclaf | 8/10 | 6138 days | 1% |
| Sebastian Bleck | 7/10 | 6142 days | 1% |
| Emma Dolk | 4/10 | 6143 days | 1% |
| Sheryl | 8/10 | 6164 days | 1% |
| David | 8/10 | 6173 days | 1% |
| Iain | 6/10 | 6174 days | 1% |
| Fred and Tim | 7/10 | 6208 days | 1% |
| George | 9/10 | 6443 days | 1% |
| Matous | 7/10 | 6448 days | 1% |
| clairekidd | 7/10 | 6456 days | 1% |
| Jonas | 3/10 | 6462 days | 1% |
| Stefan | 7/10 | 6487 days | 1% |
| Stefan | 8/10 | 6497 days | 1% |
| Justin | 9/10 | 6497 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
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
17.34% 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.