Kia ora, 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 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
60.52%
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 |
|---|---|---|---|
| Warren | 5/10 | 82 days | 100% |
| Matt | 10/10 | 813 days | 82% |
| SBlu | 1/10 | 844 days | 31% |
| James Fuller | 3/10 | 875 days | 40% |
| Mark | 4/10 | 905 days | 46% |
| Véronique Laplante | 1/10 | 905 days | 28% |
| Brian symmes | 1/10 | 905 days | 28% |
| R. Armstrong | 5/10 | 936 days | 50% |
| Sandy | 1/10 | 1119 days | 17% |
| Jonathan | 1/10 | 1270 days | 12% |
| PeteR | 3/10 | 1301 days | 14% |
| La Vie | 1/10 | 1484 days | 6% |
| Pauline Kane | 10/10 | 2062 days | 5% |
| Roy Sandbrook | 10/10 | 2215 days | 5% |
| Nickclev | 3/10 | 2246 days | 2% |
| Pepe Huebner | 4/10 | 2670 days | 2% |
| Jennie Tollerton | 8/10 | 2732 days | 4% |
| Phil Baker | 9/10 | 2735 days | 4% |
| Lily Roelofs | 1/10 | 2762 days | 1% |
| Vince Midmore | 1/10 | 3004 days | 1% |
| Francesca Scott | 10/10 | 3012 days | 3% |
| Erna Muller | 9/10 | 3020 days | 3% |
| Flip Hoogeveen | 8/10 | 3020 days | 3% |
| Chaulet | 5/10 | 3023 days | 2% |
| Felix Koehler | 4/10 | 3024 days | 2% |
| Kristina Nunoz | 7/10 | 3024 days | 3% |
| Becky Fox | 7/10 | 3026 days | 3% |
| Emma Millett | 8/10 | 3026 days | 3% |
| Rohzine | 7/10 | 3026 days | 3% |
| P and W Gene | 8/10 | 3027 days | 3% |
| Maaike | 8/10 | 3055 days | 3% |
| T Geelen | 8/10 | 3055 days | 3% |
| Wendy Steer | 8/10 | 3061 days | 3% |
| Marcel Felder | 7/10 | 3065 days | 3% |
| Jonas Gorb | 8/10 | 3069 days | 3% |
| Rahel | 7/10 | 3069 days | 3% |
| Maria Eriksson | 7/10 | 3072 days | 3% |
| Gilbert Baptiste | 8/10 | 3072 days | 3% |
| Emilie Bavard | 7/10 | 3072 days | 3% |
| Josh Bird | 7/10 | 3074 days | 3% |
| Jemima Brown | 7/10 | 3074 days | 3% |
| Aurelie Otis | 9/10 | 3076 days | 3% |
| Jake Bullin | 10/10 | 3078 days | 3% |
| Lisa | 10/10 | 3079 days | 3% |
| Bina Johansson | 10/10 | 3089 days | 3% |
| Sabrina and Hannes | 8/10 | 3092 days | 3% |
| Rogier Post | 7/10 | 3094 days | 2% |
| Michal Za'heryuk | 8/10 | 3096 days | 3% |
| Karine Dransart | 8/10 | 3100 days | 3% |
| Samuel Michalak | 7/10 | 3103 days | 2% |
| Ben | 7/10 | 3106 days | 2% |
| Julian Gury | 7/10 | 3109 days | 2% |
| Fazeel Ali | 10/10 | 3157 days | 3% |
| Anna | 10/10 | 3310 days | 2% |
| Jan Berendsen | 9/10 | 3314 days | 2% |
| Jorge Anderson | 8/10 | 3314 days | 2% |
| Simon Schatz | 8/10 | 3316 days | 2% |
| Thomas Le Buzulier | 8/10 | 3320 days | 2% |
| Kristina Breitwieser | 8/10 | 3321 days | 2% |
| Magali Schwantke | 8/10 | 3324 days | 2% |
| Laura Schratt | 6/10 | 3327 days | 2% |
| Mathilde Arp | 8/10 | 3327 days | 2% |
| Arnd Kohlen | 6/10 | 3327 days | 2% |
| Laerke Soee | 7/10 | 3328 days | 2% |
| Christian Krause | 9/10 | 3328 days | 2% |
| Mark | 8/10 | 3335 days | 2% |
| Hannes | 10/10 | 3339 days | 2% |
| Nathan Raymond | 10/10 | 3341 days | 2% |
| Rachel Bruce | 5/10 | 3342 days | 1% |
| Sunja Abbe | 9/10 | 3344 days | 2% |
| Kristof | 7/10 | 3346 days | 2% |
| Talissa Missiato | 10/10 | 3347 days | 2% |
| Eloise | 7/10 | 3347 days | 2% |
| Julia Scharbert | 8/10 | 3348 days | 2% |
| Severin Knegsch | 9/10 | 3348 days | 2% |
| Pierre Jouffineau | 9/10 | 3349 days | 2% |
| Floren Hoenschler | 7/10 | 3355 days | 2% |
| Johanna | 7/10 | 3355 days | 2% |
| Natasha Harbinson | 6/10 | 3359 days | 2% |
| Sophie Kalnymsky | 7/10 | 3362 days | 2% |
| Clemence and Pedro | 8/10 | 3363 days | 2% |
| Maxim Motheus | 8/10 | 3365 days | 2% |
| Mijke Boesten | 6/10 | 3366 days | 2% |
| Jan | 6/10 | 3369 days | 2% |
| Cindy Rizzo | 8/10 | 3372 days | 2% |
| Ulli | 10/10 | 3375 days | 2% |
| Dave O'Brien | 10/10 | 3378 days | 2% |
| Annett Kiessling | 7/10 | 3378 days | 2% |
| Chiara | 7/10 | 3380 days | 2% |
| Levi | 8/10 | 3382 days | 2% |
| Martin Baleja | 10/10 | 3383 days | 2% |
| Asborn Damgaard | 9/10 | 3387 days | 2% |
| Leo James | 8/10 | 3387 days | 2% |
| Sophie NIemann | 10/10 | 3388 days | 2% |
| Edwine | 8/10 | 3388 days | 2% |
| Jonathan and Gulsen | 10/10 | 3397 days | 2% |
| Tatiana | 10/10 | 3397 days | 2% |
| Valerie Balcom | 8/10 | 3397 days | 2% |
| Raviv Regev | 8/10 | 3412 days | 2% |
| Monika Dippel | 8/10 | 3415 days | 2% |
| Marc | 6/10 | 3415 days | 2% |
| Christine Slowiak | 8/10 | 3416 days | 2% |
| Justin Kechanski | 6/10 | 3416 days | 2% |
| Judith Goodyear | 7/10 | 3425 days | 2% |
| Hannah Fidora | 8/10 | 3428 days | 2% |
| Sarah Boettcher | 9/10 | 3476 days | 2% |
| Katherine Halliday | 9/10 | 3696 days | 1% |
| Christoph | 8/10 | 3697 days | 1% |
| Katherine Britten | 9/10 | 3699 days | 1% |
| Trevor Wichman | 9/10 | 3740 days | 1% |
| Jan Towers | 10/10 | 4039 days | 0% |
| isabel Zander | 7/10 | 4040 days | 0% |
| Corinne | 8/10 | 4042 days | 0% |
| Martin Sajdok | 5/10 | 4043 days | 0% |
| Camille Bellay | 7/10 | 4043 days | 0% |
| Garry Renton | 7/10 | 4048 days | 0% |
| Paula Renton | 7/10 | 4048 days | 0% |
| Simon Mehlmann | 7/10 | 4049 days | 0% |
| Carolin Siegert | 8/10 | 4049 days | 0% |
| Sarah Beyeler | 10/10 | 4071 days | 0% |
| Kim Lavener | 10/10 | 4071 days | 0% |
| Rosie | 7/10 | 4072 days | 0% |
| Anna Sternberg | 6/10 | 4073 days | 0% |
| Steffen | 9/10 | 4075 days | 0% |
| Nina Helmling | 8/10 | 4075 days | 0% |
| Friederike Kranzin | 7/10 | 4079 days | 0% |
| Guillaume | 6/10 | 4081 days | 0% |
| Roy Matthieu | 7/10 | 4083 days | 0% |
| Cindy Benayoum | 7/10 | 4083 days | 0% |
| Simon Tanguy | 8/10 | 4091 days | 0% |
| David Krasner | 9/10 | 4097 days | 0% |
| Susan | 8/10 | 4097 days | 0% |
| Jesseca Klausch | 6/10 | 4098 days | 0% |
| Vincent Schaeflier | 6/10 | 4098 days | 0% |
| Timothee Serres | 7/10 | 4102 days | 0% |
| Jesse Flynn | 6/10 | 4107 days | 0% |
| Claudia | 10/10 | 4109 days | 0% |
| Stuart Wilson | 8/10 | 4127 days | 0% |
| Marine | 9/10 | 4128 days | 0% |
| Supiot Zudovic | 10/10 | 4419 days | 1% |
| Iban Dupont | 7/10 | 4420 days | 1% |
| Guillaume Boudrand | 8/10 | 4420 days | 1% |
| Rampon | 9/10 | 4424 days | 1% |
| Jirka Sirka | 8/10 | 4425 days | 1% |
| Debiesse | 9/10 | 4425 days | 1% |
| Jitka Zenahlikova | 5/10 | 4429 days | 0% |
| Gale Willcocks | 10/10 | 4430 days | 1% |
| Ken Richardson | 8/10 | 4430 days | 1% |
| Cloarec Guillaume | 9/10 | 4432 days | 1% |
| Kathy Arthurs | 8/10 | 4437 days | 1% |
| Claire | 7/10 | 4437 days | 1% |
| Brendon Furney | 9/10 | 4441 days | 1% |
| Sanchez | 2/10 | 4449 days | 0% |
| Mary Neustroski | 9/10 | 4451 days | 1% |
| Scholler | 10/10 | 4496 days | 1% |
| Nadine and Jan | 8/10 | 4509 days | 1% |
| Frederick Neilsen | 8/10 | 4539 days | 1% |
| Paulmiriamgarry | 10/10 | 4680 days | 1% |
| Numa Brouimet | 7/10 | 4798 days | 1% |
| Virgil Anabel | 9/10 | 4798 days | 1% |
| Melanie Friessen | 6/10 | 4804 days | 1% |
| D van Dongen | 7/10 | 4806 days | 1% |
| David Perry | 8/10 | 4811 days | 1% |
| pamr | 8/10 | 4815 days | 1% |
| M Neuman | 8/10 | 4823 days | 1% |
| A Sorg | 10/10 | 4823 days | 1% |
| ge04jen | 7/10 | 4862 days | 1% |
| hendrik king | 7/10 | 4862 days | 1% |
| jule | 8/10 | 4923 days | 1% |
| Ryan Dorsey | 8/10 | 5165 days | 1% |
| Kathleen Brown | 8/10 | 5166 days | 1% |
| Pete H | 2/10 | 5542 days | 0% |
| hermine Petz | 2/10 | 5555 days | 0% |
| Mike Kirchner | 6/10 | 5557 days | 1% |
| Ann Grandchamp | 10/10 | 5575 days | 1% |
| Holliger | 7/10 | 5578 days | 1% |
| Kane Chain | 6/10 | 5578 days | 1% |
| Glenn Nicholson | 8/10 | 5581 days | 1% |
| sanneb1 | 7/10 | 5608 days | 1% |
| jamesg | 8/10 | 5621 days | 1% |
| Bas van Schagen | 7/10 | 5630 days | 1% |
| Des Longville | 7/10 | 5776 days | 1% |
| VirginiaR | 9/10 | 5859 days | 1% |
| Raewyn | 7/10 | 5864 days | 1% |
| Sally477 | 9/10 | 5868 days | 1% |
| Limor | 9/10 | 5939 days | 1% |
| Hove | 8/10 | 5940 days | 1% |
| Lieke | 8/10 | 5940 days | 1% |
| martin piper | 8/10 | 5943 days | 1% |
| purplekat99 | 10/10 | 5988 days | 1% |
| Patricia | 10/10 | 5989 days | 1% |
| Tiana | 8/10 | 6007 days | 1% |
| Raey | 10/10 | 6065 days | 1% |
| Carmen | 3/10 | 6119 days | 0% |
| Dave | 7/10 | 6127 days | 1% |
| Sheila Haran | 7/10 | 6239 days | 1% |
| Caroline Cole | 4/10 | 6244 days | 0% |
| Wendy | 8/10 | 6251 days | 1% |
| Annette Hurst | 8/10 | 6257 days | 1% |
| Phil Connelly | 7/10 | 6259 days | 1% |
| Andria Davis | 9/10 | 6260 days | 1% |
| Georgina Mulligan | 7/10 | 6260 days | 1% |
| Claire Masling | 8/10 | 6267 days | 1% |
| Christian Schwerdt | 7/10 | 6268 days | 1% |
| Jackie Horwell | 10/10 | 6268 days | 1% |
| Gustavo | 7/10 | 6268 days | 1% |
| Sean Pierce | 5/10 | 6272 days | 0% |
| Roger and Heather Smith | 10/10 | 6272 days | 1% |
| Tobias Rahm | 10/10 | 6272 days | 1% |
| Roman | 6/10 | 6278 days | 1% |
| ranker_851 | 8/10 | 6278 days | 1% |
| Vaclaf | 8/10 | 6278 days | 1% |
| Sebastian Bleck | 7/10 | 6282 days | 1% |
| Emma Dolk | 4/10 | 6283 days | 0% |
| Sheryl | 8/10 | 6304 days | 1% |
| David | 8/10 | 6313 days | 1% |
| Iain | 6/10 | 6314 days | 1% |
| Fred and Tim | 7/10 | 6348 days | 1% |
| George | 9/10 | 6583 days | 1% |
| Matous | 7/10 | 6588 days | 1% |
| clairekidd | 7/10 | 6596 days | 1% |
| Jonas | 3/10 | 6602 days | 0% |
| Stefan | 7/10 | 6627 days | 1% |
| Stefan | 8/10 | 6637 days | 1% |
| Justin | 9/10 | 6637 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
-1.08% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 72 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 66 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 63 | -1.03% |
| 64 | -1.05% |
| 65 | -1.06% |
| 66 | -1.08% |
| 67 | -1.10% |
| 68 | -1.11% |
| 69 | -1.13% |
| … | … |
Balancing Adjustment
14.43% 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.