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
226 Valid Reviews
The Bluebridge Cook Strait Ferry experience has a total of 228 reviews. There are 226 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 226 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 | 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
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 226 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
59.81%
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 | 31 days | 100% |
| Matt | 10/10 | 762 days | 88% |
| SBlu | 1/10 | 793 days | 34% |
| James Fuller | 3/10 | 824 days | 44% |
| Mark | 4/10 | 854 days | 50% |
| Véronique Laplante | 1/10 | 854 days | 31% |
| Brian symmes | 1/10 | 854 days | 31% |
| R. Armstrong | 5/10 | 885 days | 55% |
| Sandy | 1/10 | 1068 days | 20% |
| Jonathan | 1/10 | 1219 days | 14% |
| PeteR | 3/10 | 1250 days | 17% |
| La Vie | 1/10 | 1433 days | 7% |
| Pauline Kane | 10/10 | 2011 days | 6% |
| Roy Sandbrook | 10/10 | 2164 days | 6% |
| Nickclev | 3/10 | 2195 days | 3% |
| Pepe Huebner | 4/10 | 2618 days | 3% |
| Jennie Tollerton | 8/10 | 2681 days | 4% |
| Phil Baker | 9/10 | 2684 days | 4% |
| Lily Roelofs | 1/10 | 2710 days | 2% |
| Vince Midmore | 1/10 | 2952 days | 1% |
| Francesca Scott | 10/10 | 2961 days | 4% |
| Erna Muller | 9/10 | 2969 days | 4% |
| Flip Hoogeveen | 8/10 | 2969 days | 4% |
| Chaulet | 5/10 | 2972 days | 3% |
| Felix Koehler | 4/10 | 2973 days | 2% |
| Kristina Nunoz | 7/10 | 2973 days | 3% |
| Becky Fox | 7/10 | 2975 days | 3% |
| Emma Millett | 8/10 | 2975 days | 4% |
| Rohzine | 7/10 | 2975 days | 3% |
| P and W Gene | 8/10 | 2976 days | 4% |
| Maaike | 8/10 | 3004 days | 3% |
| T Geelen | 8/10 | 3004 days | 3% |
| Wendy Steer | 8/10 | 3010 days | 3% |
| Marcel Felder | 7/10 | 3014 days | 3% |
| Jonas Gorb | 8/10 | 3018 days | 3% |
| Rahel | 7/10 | 3018 days | 3% |
| Maria Eriksson | 7/10 | 3021 days | 3% |
| Gilbert Baptiste | 8/10 | 3021 days | 3% |
| Emilie Bavard | 7/10 | 3021 days | 3% |
| Josh Bird | 7/10 | 3023 days | 3% |
| Jemima Brown | 7/10 | 3023 days | 3% |
| Aurelie Otis | 9/10 | 3025 days | 3% |
| Jake Bullin | 10/10 | 3027 days | 3% |
| Lisa | 10/10 | 3028 days | 3% |
| Bina Johansson | 10/10 | 3038 days | 3% |
| Sabrina and Hannes | 8/10 | 3041 days | 3% |
| Rogier Post | 7/10 | 3043 days | 3% |
| Michal Za'heryuk | 8/10 | 3045 days | 3% |
| Karine Dransart | 8/10 | 3049 days | 3% |
| Samuel Michalak | 7/10 | 3052 days | 3% |
| Ben | 7/10 | 3055 days | 3% |
| Julian Gury | 7/10 | 3058 days | 3% |
| Fazeel Ali | 10/10 | 3105 days | 3% |
| Anna | 10/10 | 3259 days | 3% |
| Jan Berendsen | 9/10 | 3263 days | 3% |
| Jorge Anderson | 8/10 | 3263 days | 3% |
| Simon Schatz | 8/10 | 3265 days | 3% |
| Thomas Le Buzulier | 8/10 | 3269 days | 3% |
| Kristina Breitwieser | 8/10 | 3270 days | 3% |
| Magali Schwantke | 8/10 | 3273 days | 3% |
| Laura Schratt | 6/10 | 3276 days | 2% |
| Mathilde Arp | 8/10 | 3276 days | 3% |
| Arnd Kohlen | 6/10 | 3276 days | 2% |
| Laerke Soee | 7/10 | 3277 days | 3% |
| Christian Krause | 9/10 | 3277 days | 3% |
| Mark | 8/10 | 3284 days | 3% |
| Hannes | 10/10 | 3288 days | 3% |
| Nathan Raymond | 10/10 | 3290 days | 3% |
| Rachel Bruce | 5/10 | 3291 days | 2% |
| Sunja Abbe | 9/10 | 3293 days | 3% |
| Kristof | 7/10 | 3295 days | 3% |
| Talissa Missiato | 10/10 | 3296 days | 3% |
| Eloise | 7/10 | 3296 days | 3% |
| Julia Scharbert | 8/10 | 3297 days | 3% |
| Severin Knegsch | 9/10 | 3297 days | 3% |
| Pierre Jouffineau | 9/10 | 3298 days | 3% |
| Floren Hoenschler | 7/10 | 3304 days | 3% |
| Johanna | 7/10 | 3304 days | 3% |
| Natasha Harbinson | 6/10 | 3308 days | 2% |
| Sophie Kalnymsky | 7/10 | 3311 days | 3% |
| Clemence and Pedro | 8/10 | 3312 days | 3% |
| Maxim Motheus | 8/10 | 3314 days | 3% |
| Mijke Boesten | 6/10 | 3315 days | 2% |
| Jan | 6/10 | 3318 days | 2% |
| Cindy Rizzo | 8/10 | 3321 days | 3% |
| Ulli | 10/10 | 3324 days | 3% |
| Anna Doßler | 9/10 | 3325 days | 3% |
| Dave O'Brien | 10/10 | 3327 days | 3% |
| Annett Kiessling | 7/10 | 3327 days | 3% |
| Chiara | 7/10 | 3329 days | 3% |
| Levi | 8/10 | 3331 days | 3% |
| Martin Baleja | 10/10 | 3332 days | 3% |
| Asborn Damgaard | 9/10 | 3336 days | 3% |
| Leo James | 8/10 | 3336 days | 3% |
| Sophie NIemann | 10/10 | 3337 days | 3% |
| Edwine | 8/10 | 3337 days | 3% |
| Jonathan and Gulsen | 10/10 | 3346 days | 3% |
| Tatiana | 10/10 | 3346 days | 3% |
| Valerie Balcom | 8/10 | 3346 days | 3% |
| Raviv Regev | 8/10 | 3361 days | 3% |
| Monika Dippel | 8/10 | 3364 days | 3% |
| Marc | 6/10 | 3364 days | 2% |
| Christine Slowiak | 8/10 | 3365 days | 3% |
| Justin Kechanski | 6/10 | 3365 days | 2% |
| Judith Goodyear | 7/10 | 3374 days | 2% |
| Hannah Fidora | 8/10 | 3377 days | 3% |
| Sarah Boettcher | 9/10 | 3425 days | 2% |
| Katherine Halliday | 9/10 | 3645 days | 2% |
| Christoph | 8/10 | 3646 days | 2% |
| Katherine Britten | 9/10 | 3648 days | 2% |
| Trevor Wichman | 9/10 | 3689 days | 2% |
| Jan Towers | 10/10 | 3988 days | 1% |
| isabel Zander | 7/10 | 3989 days | 1% |
| Corinne | 8/10 | 3991 days | 1% |
| Martin Sajdok | 5/10 | 3992 days | 1% |
| Camille Bellay | 7/10 | 3992 days | 1% |
| Garry Renton | 7/10 | 3997 days | 1% |
| Paula Renton | 7/10 | 3997 days | 1% |
| Simon Mehlmann | 7/10 | 3998 days | 1% |
| Carolin Siegert | 8/10 | 3998 days | 1% |
| Sarah Beyeler | 10/10 | 4020 days | 1% |
| Kim Lavener | 10/10 | 4020 days | 1% |
| Rosie | 7/10 | 4021 days | 1% |
| Anna Sternberg | 6/10 | 4022 days | 1% |
| Steffen | 9/10 | 4024 days | 1% |
| Nina Helmling | 8/10 | 4024 days | 1% |
| Friederike Kranzin | 7/10 | 4028 days | 1% |
| Guillaume | 6/10 | 4030 days | 1% |
| Roy Matthieu | 7/10 | 4032 days | 1% |
| Cindy Benayoum | 7/10 | 4032 days | 1% |
| Simon Tanguy | 8/10 | 4040 days | 1% |
| David Krasner | 9/10 | 4046 days | 1% |
| Susan | 8/10 | 4046 days | 1% |
| Jesseca Klausch | 6/10 | 4047 days | 1% |
| Vincent Schaeflier | 6/10 | 4047 days | 1% |
| Timothee Serres | 7/10 | 4051 days | 1% |
| Jesse Flynn | 6/10 | 4056 days | 1% |
| Claudia | 10/10 | 4058 days | 1% |
| Stuart Wilson | 8/10 | 4076 days | 1% |
| Marine | 9/10 | 4077 days | 1% |
| Supiot Zudovic | 10/10 | 4368 days | 0% |
| Iban Dupont | 7/10 | 4369 days | 0% |
| Guillaume Boudrand | 8/10 | 4369 days | 0% |
| Rampon | 9/10 | 4373 days | 0% |
| Jirka Sirka | 8/10 | 4374 days | 0% |
| Debiesse | 9/10 | 4374 days | 0% |
| Jitka Zenahlikova | 5/10 | 4378 days | 0% |
| Gale Willcocks | 10/10 | 4379 days | 0% |
| Ken Richardson | 8/10 | 4379 days | 0% |
| Cloarec Guillaume | 9/10 | 4381 days | 1% |
| Kathy Arthurs | 8/10 | 4386 days | 1% |
| Claire | 7/10 | 4386 days | 1% |
| Brendon Furney | 9/10 | 4390 days | 1% |
| Sanchez | 2/10 | 4398 days | 1% |
| Mary Neustroski | 9/10 | 4400 days | 1% |
| Scholler | 10/10 | 4445 days | 1% |
| Nadine and Jan | 8/10 | 4458 days | 1% |
| Frederick Neilsen | 8/10 | 4488 days | 1% |
| Paulmiriamgarry | 10/10 | 4629 days | 1% |
| Numa Brouimet | 7/10 | 4747 days | 1% |
| Virgil Anabel | 9/10 | 4747 days | 1% |
| Melanie Friessen | 6/10 | 4753 days | 1% |
| D van Dongen | 7/10 | 4755 days | 1% |
| David Perry | 8/10 | 4760 days | 1% |
| pamr | 8/10 | 4764 days | 1% |
| M Neuman | 8/10 | 4772 days | 1% |
| A Sorg | 10/10 | 4772 days | 1% |
| ge04jen | 7/10 | 4811 days | 1% |
| hendrik king | 7/10 | 4811 days | 1% |
| jule | 8/10 | 4872 days | 1% |
| Ryan Dorsey | 8/10 | 5114 days | 1% |
| Kathleen Brown | 8/10 | 5115 days | 1% |
| Pete H | 2/10 | 5491 days | 1% |
| hermine Petz | 2/10 | 5504 days | 1% |
| Mike Kirchner | 6/10 | 5506 days | 1% |
| Ann Grandchamp | 10/10 | 5524 days | 1% |
| Holliger | 7/10 | 5527 days | 1% |
| Kane Chain | 6/10 | 5527 days | 1% |
| Glenn Nicholson | 8/10 | 5530 days | 1% |
| sanneb1 | 7/10 | 5557 days | 1% |
| jamesg | 8/10 | 5570 days | 1% |
| Bas van Schagen | 7/10 | 5579 days | 1% |
| Des Longville | 7/10 | 5725 days | 1% |
| VirginiaR | 9/10 | 5808 days | 1% |
| Raewyn | 7/10 | 5813 days | 1% |
| Sally477 | 9/10 | 5817 days | 1% |
| Limor | 9/10 | 5887 days | 1% |
| Hove | 8/10 | 5888 days | 1% |
| Lieke | 8/10 | 5888 days | 1% |
| martin piper | 8/10 | 5892 days | 1% |
| purplekat99 | 10/10 | 5937 days | 1% |
| Patricia | 10/10 | 5937 days | 1% |
| Tiana | 8/10 | 5955 days | 1% |
| Raey | 10/10 | 6014 days | 1% |
| Carmen | 3/10 | 6068 days | 1% |
| Dave | 7/10 | 6075 days | 1% |
| Sheila Haran | 7/10 | 6188 days | 1% |
| Caroline Cole | 4/10 | 6193 days | 1% |
| Wendy | 8/10 | 6200 days | 1% |
| Annette Hurst | 8/10 | 6206 days | 1% |
| Phil Connelly | 7/10 | 6208 days | 1% |
| Andria Davis | 9/10 | 6209 days | 1% |
| Georgina Mulligan | 7/10 | 6209 days | 1% |
| Claire Masling | 8/10 | 6216 days | 1% |
| Christian Schwerdt | 7/10 | 6217 days | 1% |
| Jackie Horwell | 10/10 | 6217 days | 1% |
| Gustavo | 7/10 | 6217 days | 1% |
| Sean Pierce | 5/10 | 6221 days | 1% |
| Roger and Heather Smith | 10/10 | 6221 days | 1% |
| Tobias Rahm | 10/10 | 6221 days | 1% |
| Roman | 6/10 | 6227 days | 1% |
| ranker_851 | 8/10 | 6227 days | 1% |
| Vaclaf | 8/10 | 6227 days | 1% |
| Sebastian Bleck | 7/10 | 6231 days | 1% |
| Emma Dolk | 4/10 | 6232 days | 1% |
| Sheryl | 8/10 | 6253 days | 1% |
| David | 8/10 | 6262 days | 1% |
| Iain | 6/10 | 6263 days | 1% |
| Fred and Tim | 7/10 | 6297 days | 1% |
| George | 9/10 | 6532 days | 1% |
| Matous | 7/10 | 6537 days | 1% |
| clairekidd | 7/10 | 6545 days | 1% |
| Jonas | 3/10 | 6551 days | 1% |
| Stefan | 7/10 | 6576 days | 1% |
| Stefan | 8/10 | 6586 days | 1% |
| Justin | 9/10 | 6586 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
-0.31% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 55 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 15 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 12 | -0.25% |
| 13 | -0.27% |
| 14 | -0.29% |
| 15 | -0.31% |
| 16 | -0.33% |
| 17 | -0.35% |
| 18 | -0.37% |
| … | … |
Balancing Adjustment
14.38% 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.