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% |
74.20% Average
The raw data average (mean) for all the Bluebridge Cook Strait Ferry valid reviews is 74.20% and is based on 226 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
59.91%
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 | 34 days | 100% |
| Matt | 10/10 | 765 days | 87% |
| SBlu | 1/10 | 796 days | 34% |
| James Fuller | 3/10 | 827 days | 44% |
| Mark | 4/10 | 857 days | 50% |
| Véronique Laplante | 1/10 | 857 days | 31% |
| Brian symmes | 1/10 | 857 days | 31% |
| R. Armstrong | 5/10 | 888 days | 55% |
| Sandy | 1/10 | 1071 days | 20% |
| Jonathan | 1/10 | 1222 days | 14% |
| PeteR | 3/10 | 1253 days | 17% |
| La Vie | 1/10 | 1436 days | 7% |
| Pauline Kane | 10/10 | 2014 days | 6% |
| Roy Sandbrook | 10/10 | 2167 days | 6% |
| Nickclev | 3/10 | 2198 days | 3% |
| Pepe Huebner | 4/10 | 2622 days | 3% |
| Jennie Tollerton | 8/10 | 2684 days | 4% |
| Phil Baker | 9/10 | 2687 days | 4% |
| Lily Roelofs | 1/10 | 2714 days | 2% |
| Vince Midmore | 1/10 | 2956 days | 1% |
| Francesca Scott | 10/10 | 2964 days | 4% |
| Erna Muller | 9/10 | 2972 days | 4% |
| Flip Hoogeveen | 8/10 | 2972 days | 4% |
| Chaulet | 5/10 | 2975 days | 3% |
| Felix Koehler | 4/10 | 2976 days | 2% |
| Kristina Nunoz | 7/10 | 2976 days | 3% |
| Becky Fox | 7/10 | 2978 days | 3% |
| Emma Millett | 8/10 | 2978 days | 4% |
| Rohzine | 7/10 | 2978 days | 3% |
| P and W Gene | 8/10 | 2979 days | 4% |
| Maaike | 8/10 | 3007 days | 3% |
| T Geelen | 8/10 | 3007 days | 3% |
| Wendy Steer | 8/10 | 3013 days | 3% |
| Marcel Felder | 7/10 | 3017 days | 3% |
| Jonas Gorb | 8/10 | 3021 days | 3% |
| Rahel | 7/10 | 3021 days | 3% |
| Maria Eriksson | 7/10 | 3024 days | 3% |
| Gilbert Baptiste | 8/10 | 3024 days | 3% |
| Emilie Bavard | 7/10 | 3024 days | 3% |
| Josh Bird | 7/10 | 3026 days | 3% |
| Jemima Brown | 7/10 | 3026 days | 3% |
| Aurelie Otis | 9/10 | 3028 days | 3% |
| Jake Bullin | 10/10 | 3030 days | 3% |
| Lisa | 10/10 | 3031 days | 3% |
| Bina Johansson | 10/10 | 3041 days | 3% |
| Sabrina and Hannes | 8/10 | 3044 days | 3% |
| Rogier Post | 7/10 | 3046 days | 3% |
| Michal Za'heryuk | 8/10 | 3048 days | 3% |
| Karine Dransart | 8/10 | 3052 days | 3% |
| Samuel Michalak | 7/10 | 3055 days | 3% |
| Ben | 7/10 | 3058 days | 3% |
| Julian Gury | 7/10 | 3061 days | 3% |
| Fazeel Ali | 10/10 | 3109 days | 3% |
| Anna | 10/10 | 3262 days | 3% |
| Jan Berendsen | 9/10 | 3266 days | 3% |
| Jorge Anderson | 8/10 | 3266 days | 3% |
| Simon Schatz | 8/10 | 3268 days | 3% |
| Thomas Le Buzulier | 8/10 | 3272 days | 3% |
| Kristina Breitwieser | 8/10 | 3273 days | 3% |
| Magali Schwantke | 8/10 | 3276 days | 3% |
| Laura Schratt | 6/10 | 3279 days | 2% |
| Mathilde Arp | 8/10 | 3279 days | 3% |
| Arnd Kohlen | 6/10 | 3279 days | 2% |
| Laerke Soee | 7/10 | 3280 days | 3% |
| Christian Krause | 9/10 | 3280 days | 3% |
| Mark | 8/10 | 3287 days | 3% |
| Hannes | 10/10 | 3291 days | 3% |
| Nathan Raymond | 10/10 | 3293 days | 3% |
| Rachel Bruce | 5/10 | 3294 days | 2% |
| Sunja Abbe | 9/10 | 3296 days | 3% |
| Kristof | 7/10 | 3298 days | 3% |
| Talissa Missiato | 10/10 | 3299 days | 3% |
| Eloise | 7/10 | 3299 days | 3% |
| Julia Scharbert | 8/10 | 3300 days | 3% |
| Severin Knegsch | 9/10 | 3300 days | 3% |
| Pierre Jouffineau | 9/10 | 3301 days | 3% |
| Floren Hoenschler | 7/10 | 3307 days | 3% |
| Johanna | 7/10 | 3307 days | 3% |
| Natasha Harbinson | 6/10 | 3311 days | 2% |
| Sophie Kalnymsky | 7/10 | 3314 days | 3% |
| Clemence and Pedro | 8/10 | 3315 days | 3% |
| Maxim Motheus | 8/10 | 3317 days | 3% |
| Mijke Boesten | 6/10 | 3318 days | 2% |
| Jan | 6/10 | 3321 days | 2% |
| Cindy Rizzo | 8/10 | 3324 days | 3% |
| Ulli | 10/10 | 3327 days | 3% |
| Dave O'Brien | 10/10 | 3330 days | 3% |
| Annett Kiessling | 7/10 | 3330 days | 3% |
| Chiara | 7/10 | 3332 days | 2% |
| Levi | 8/10 | 3334 days | 3% |
| Martin Baleja | 10/10 | 3335 days | 3% |
| Asborn Damgaard | 9/10 | 3339 days | 3% |
| Leo James | 8/10 | 3339 days | 3% |
| Sophie NIemann | 10/10 | 3340 days | 3% |
| Edwine | 8/10 | 3340 days | 3% |
| Jonathan and Gulsen | 10/10 | 3349 days | 3% |
| Tatiana | 10/10 | 3349 days | 3% |
| Valerie Balcom | 8/10 | 3349 days | 3% |
| Raviv Regev | 8/10 | 3364 days | 3% |
| Monika Dippel | 8/10 | 3367 days | 3% |
| Marc | 6/10 | 3367 days | 2% |
| Christine Slowiak | 8/10 | 3368 days | 3% |
| Justin Kechanski | 6/10 | 3368 days | 2% |
| Judith Goodyear | 7/10 | 3377 days | 2% |
| Hannah Fidora | 8/10 | 3380 days | 3% |
| Sarah Boettcher | 9/10 | 3428 days | 2% |
| Katherine Halliday | 9/10 | 3648 days | 2% |
| Christoph | 8/10 | 3649 days | 2% |
| Katherine Britten | 9/10 | 3651 days | 2% |
| Trevor Wichman | 9/10 | 3692 days | 2% |
| Jan Towers | 10/10 | 3991 days | 1% |
| isabel Zander | 7/10 | 3992 days | 1% |
| Corinne | 8/10 | 3994 days | 1% |
| Martin Sajdok | 5/10 | 3995 days | 1% |
| Camille Bellay | 7/10 | 3995 days | 1% |
| Garry Renton | 7/10 | 4000 days | 1% |
| Paula Renton | 7/10 | 4000 days | 1% |
| Simon Mehlmann | 7/10 | 4001 days | 1% |
| Carolin Siegert | 8/10 | 4001 days | 1% |
| Sarah Beyeler | 10/10 | 4023 days | 1% |
| Kim Lavener | 10/10 | 4023 days | 1% |
| Rosie | 7/10 | 4024 days | 1% |
| Anna Sternberg | 6/10 | 4025 days | 1% |
| Steffen | 9/10 | 4027 days | 1% |
| Nina Helmling | 8/10 | 4027 days | 1% |
| Friederike Kranzin | 7/10 | 4031 days | 1% |
| Guillaume | 6/10 | 4033 days | 1% |
| Roy Matthieu | 7/10 | 4035 days | 1% |
| Cindy Benayoum | 7/10 | 4035 days | 1% |
| Simon Tanguy | 8/10 | 4043 days | 1% |
| David Krasner | 9/10 | 4049 days | 1% |
| Susan | 8/10 | 4049 days | 1% |
| Jesseca Klausch | 6/10 | 4050 days | 1% |
| Vincent Schaeflier | 6/10 | 4050 days | 1% |
| Timothee Serres | 7/10 | 4054 days | 1% |
| Jesse Flynn | 6/10 | 4059 days | 1% |
| Claudia | 10/10 | 4061 days | 1% |
| Stuart Wilson | 8/10 | 4079 days | 1% |
| Marine | 9/10 | 4080 days | 1% |
| Supiot Zudovic | 10/10 | 4371 days | 0% |
| Iban Dupont | 7/10 | 4372 days | 0% |
| Guillaume Boudrand | 8/10 | 4372 days | 0% |
| Rampon | 9/10 | 4376 days | 0% |
| Jirka Sirka | 8/10 | 4377 days | 0% |
| Debiesse | 9/10 | 4377 days | 0% |
| Jitka Zenahlikova | 5/10 | 4381 days | 1% |
| Gale Willcocks | 10/10 | 4382 days | 1% |
| Ken Richardson | 8/10 | 4382 days | 1% |
| Cloarec Guillaume | 9/10 | 4384 days | 1% |
| Kathy Arthurs | 8/10 | 4389 days | 1% |
| Claire | 7/10 | 4389 days | 1% |
| Brendon Furney | 9/10 | 4393 days | 1% |
| Sanchez | 2/10 | 4401 days | 1% |
| Mary Neustroski | 9/10 | 4403 days | 1% |
| Scholler | 10/10 | 4448 days | 1% |
| Nadine and Jan | 8/10 | 4461 days | 1% |
| Frederick Neilsen | 8/10 | 4491 days | 1% |
| Paulmiriamgarry | 10/10 | 4632 days | 1% |
| Numa Brouimet | 7/10 | 4750 days | 1% |
| Virgil Anabel | 9/10 | 4750 days | 1% |
| Melanie Friessen | 6/10 | 4756 days | 1% |
| D van Dongen | 7/10 | 4758 days | 1% |
| David Perry | 8/10 | 4763 days | 1% |
| pamr | 8/10 | 4767 days | 1% |
| M Neuman | 8/10 | 4775 days | 1% |
| A Sorg | 10/10 | 4775 days | 1% |
| ge04jen | 7/10 | 4814 days | 1% |
| hendrik king | 7/10 | 4814 days | 1% |
| jule | 8/10 | 4875 days | 1% |
| Ryan Dorsey | 8/10 | 5117 days | 1% |
| Kathleen Brown | 8/10 | 5118 days | 1% |
| Pete H | 2/10 | 5494 days | 1% |
| hermine Petz | 2/10 | 5507 days | 1% |
| Mike Kirchner | 6/10 | 5509 days | 1% |
| Ann Grandchamp | 10/10 | 5527 days | 1% |
| Holliger | 7/10 | 5530 days | 1% |
| Kane Chain | 6/10 | 5530 days | 1% |
| Glenn Nicholson | 8/10 | 5533 days | 1% |
| sanneb1 | 7/10 | 5560 days | 1% |
| jamesg | 8/10 | 5573 days | 1% |
| Bas van Schagen | 7/10 | 5582 days | 1% |
| Des Longville | 7/10 | 5728 days | 1% |
| VirginiaR | 9/10 | 5811 days | 1% |
| Raewyn | 7/10 | 5816 days | 1% |
| Sally477 | 9/10 | 5820 days | 1% |
| Limor | 9/10 | 5890 days | 1% |
| Hove | 8/10 | 5891 days | 1% |
| Lieke | 8/10 | 5891 days | 1% |
| martin piper | 8/10 | 5895 days | 1% |
| purplekat99 | 10/10 | 5940 days | 1% |
| Patricia | 10/10 | 5941 days | 1% |
| Tiana | 8/10 | 5958 days | 1% |
| Raey | 10/10 | 6017 days | 1% |
| Carmen | 3/10 | 6071 days | 1% |
| Dave | 7/10 | 6078 days | 1% |
| Sheila Haran | 7/10 | 6191 days | 1% |
| Caroline Cole | 4/10 | 6196 days | 1% |
| Wendy | 8/10 | 6203 days | 1% |
| Annette Hurst | 8/10 | 6209 days | 1% |
| Phil Connelly | 7/10 | 6211 days | 1% |
| Andria Davis | 9/10 | 6212 days | 1% |
| Georgina Mulligan | 7/10 | 6212 days | 1% |
| Claire Masling | 8/10 | 6219 days | 1% |
| Christian Schwerdt | 7/10 | 6220 days | 1% |
| Jackie Horwell | 10/10 | 6220 days | 1% |
| Gustavo | 7/10 | 6220 days | 1% |
| Sean Pierce | 5/10 | 6224 days | 1% |
| Roger and Heather Smith | 10/10 | 6224 days | 1% |
| Tobias Rahm | 10/10 | 6224 days | 1% |
| Roman | 6/10 | 6230 days | 1% |
| ranker_851 | 8/10 | 6230 days | 1% |
| Vaclaf | 8/10 | 6230 days | 1% |
| Sebastian Bleck | 7/10 | 6234 days | 1% |
| Emma Dolk | 4/10 | 6235 days | 1% |
| Sheryl | 8/10 | 6256 days | 1% |
| David | 8/10 | 6265 days | 1% |
| Iain | 6/10 | 6266 days | 1% |
| Fred and Tim | 7/10 | 6300 days | 1% |
| George | 9/10 | 6535 days | 1% |
| Matous | 7/10 | 6540 days | 1% |
| clairekidd | 7/10 | 6548 days | 1% |
| Jonas | 3/10 | 6554 days | 1% |
| Stefan | 7/10 | 6579 days | 1% |
| Stefan | 8/10 | 6589 days | 1% |
| Justin | 9/10 | 6589 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
-0.37% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 56 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 18 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 15 | -0.30% |
| 16 | -0.33% |
| 17 | -0.35% |
| 18 | -0.37% |
| 19 | -0.39% |
| 20 | -0.41% |
| 21 | -0.43% |
| … | … |
Balancing Adjustment
14.35% 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.