Hi, 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.
![](data:image/svg+xml;utf8,<svg width="300" height="300" viewBox="0 0 300 300" xmlns="http://www.w3.org/2000/svg"><rect id="bg" width="300" height="300" fill="rgb(46,196,145)" /><path d="m 150 605 Q 206 94 -305 150 Q 206 206 150 -305 Q 94 206 605 150 Q 94 94 150 605 z" fill="rgb(70,136,0)" /><path d="m 150 515 Q 296 4 -215 150 Q 296 296 150 -215 Q 4 296 515 150 Q 4 4 150 515 z" fill="rgb(185,119,255)" /><path d="m 150 176 Q 165 135 124 150 Q 165 165 150 124 Q 135 165 176 150 Q 135 135 150 176 z" fill="rgb(209,59,110)" /></svg>)
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
60.25%
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 | 56 days | 100% |
| Matt | 10/10 | 787 days | 85% |
| SBlu | 1/10 | 818 days | 33% |
| James Fuller | 3/10 | 849 days | 42% |
| Mark | 4/10 | 879 days | 48% |
| Véronique Laplante | 1/10 | 879 days | 29% |
| Brian symmes | 1/10 | 879 days | 29% |
| R. Armstrong | 5/10 | 910 days | 53% |
| Sandy | 1/10 | 1093 days | 18% |
| Jonathan | 1/10 | 1244 days | 12% |
| PeteR | 3/10 | 1275 days | 15% |
| La Vie | 1/10 | 1458 days | 6% |
| Pauline Kane | 10/10 | 2036 days | 5% |
| Roy Sandbrook | 10/10 | 2189 days | 5% |
| Nickclev | 3/10 | 2220 days | 2% |
| Pepe Huebner | 4/10 | 2644 days | 2% |
| Jennie Tollerton | 8/10 | 2706 days | 4% |
| Phil Baker | 9/10 | 2709 days | 4% |
| Lily Roelofs | 1/10 | 2736 days | 1% |
| Vince Midmore | 1/10 | 2978 days | 1% |
| Francesca Scott | 10/10 | 2986 days | 3% |
| Erna Muller | 9/10 | 2994 days | 3% |
| Flip Hoogeveen | 8/10 | 2994 days | 3% |
| Chaulet | 5/10 | 2997 days | 2% |
| Felix Koehler | 4/10 | 2998 days | 2% |
| Kristina Nunoz | 7/10 | 2998 days | 3% |
| Becky Fox | 7/10 | 3000 days | 3% |
| Emma Millett | 8/10 | 3000 days | 3% |
| Rohzine | 7/10 | 3000 days | 3% |
| P and W Gene | 8/10 | 3001 days | 3% |
| Maaike | 8/10 | 3029 days | 3% |
| T Geelen | 8/10 | 3029 days | 3% |
| Wendy Steer | 8/10 | 3035 days | 3% |
| Marcel Felder | 7/10 | 3039 days | 3% |
| Jonas Gorb | 8/10 | 3043 days | 3% |
| Rahel | 7/10 | 3043 days | 3% |
| Maria Eriksson | 7/10 | 3046 days | 3% |
| Gilbert Baptiste | 8/10 | 3046 days | 3% |
| Emilie Bavard | 7/10 | 3046 days | 3% |
| Josh Bird | 7/10 | 3048 days | 3% |
| Jemima Brown | 7/10 | 3048 days | 3% |
| Aurelie Otis | 9/10 | 3050 days | 3% |
| Jake Bullin | 10/10 | 3052 days | 3% |
| Lisa | 10/10 | 3053 days | 3% |
| Bina Johansson | 10/10 | 3063 days | 3% |
| Sabrina and Hannes | 8/10 | 3066 days | 3% |
| Rogier Post | 7/10 | 3068 days | 3% |
| Michal Za'heryuk | 8/10 | 3070 days | 3% |
| Karine Dransart | 8/10 | 3074 days | 3% |
| Samuel Michalak | 7/10 | 3077 days | 3% |
| Ben | 7/10 | 3080 days | 3% |
| Julian Gury | 7/10 | 3083 days | 3% |
| Fazeel Ali | 10/10 | 3131 days | 3% |
| Anna | 10/10 | 3284 days | 2% |
| Jan Berendsen | 9/10 | 3288 days | 2% |
| Jorge Anderson | 8/10 | 3288 days | 2% |
| Simon Schatz | 8/10 | 3290 days | 2% |
| Thomas Le Buzulier | 8/10 | 3294 days | 2% |
| Kristina Breitwieser | 8/10 | 3295 days | 2% |
| Magali Schwantke | 8/10 | 3298 days | 2% |
| Laura Schratt | 6/10 | 3301 days | 2% |
| Mathilde Arp | 8/10 | 3301 days | 2% |
| Arnd Kohlen | 6/10 | 3301 days | 2% |
| Laerke Soee | 7/10 | 3302 days | 2% |
| Christian Krause | 9/10 | 3302 days | 2% |
| Mark | 8/10 | 3309 days | 2% |
| Hannes | 10/10 | 3313 days | 2% |
| Nathan Raymond | 10/10 | 3315 days | 2% |
| Rachel Bruce | 5/10 | 3316 days | 1% |
| Sunja Abbe | 9/10 | 3318 days | 2% |
| Kristof | 7/10 | 3320 days | 2% |
| Talissa Missiato | 10/10 | 3321 days | 2% |
| Eloise | 7/10 | 3321 days | 2% |
| Julia Scharbert | 8/10 | 3322 days | 2% |
| Severin Knegsch | 9/10 | 3322 days | 2% |
| Pierre Jouffineau | 9/10 | 3323 days | 2% |
| Floren Hoenschler | 7/10 | 3329 days | 2% |
| Johanna | 7/10 | 3329 days | 2% |
| Natasha Harbinson | 6/10 | 3333 days | 2% |
| Sophie Kalnymsky | 7/10 | 3336 days | 2% |
| Clemence and Pedro | 8/10 | 3337 days | 2% |
| Maxim Motheus | 8/10 | 3339 days | 2% |
| Mijke Boesten | 6/10 | 3340 days | 2% |
| Jan | 6/10 | 3343 days | 2% |
| Cindy Rizzo | 8/10 | 3346 days | 2% |
| Ulli | 10/10 | 3349 days | 2% |
| Dave O'Brien | 10/10 | 3352 days | 2% |
| Annett Kiessling | 7/10 | 3352 days | 2% |
| Chiara | 7/10 | 3354 days | 2% |
| Levi | 8/10 | 3356 days | 2% |
| Martin Baleja | 10/10 | 3357 days | 2% |
| Asborn Damgaard | 9/10 | 3361 days | 2% |
| Leo James | 8/10 | 3361 days | 2% |
| Sophie NIemann | 10/10 | 3362 days | 2% |
| Edwine | 8/10 | 3362 days | 2% |
| Jonathan and Gulsen | 10/10 | 3371 days | 2% |
| Tatiana | 10/10 | 3371 days | 2% |
| Valerie Balcom | 8/10 | 3371 days | 2% |
| Raviv Regev | 8/10 | 3386 days | 2% |
| Monika Dippel | 8/10 | 3389 days | 2% |
| Marc | 6/10 | 3389 days | 2% |
| Christine Slowiak | 8/10 | 3390 days | 2% |
| Justin Kechanski | 6/10 | 3390 days | 2% |
| Judith Goodyear | 7/10 | 3399 days | 2% |
| Hannah Fidora | 8/10 | 3402 days | 2% |
| Sarah Boettcher | 9/10 | 3450 days | 2% |
| Katherine Halliday | 9/10 | 3670 days | 1% |
| Christoph | 8/10 | 3671 days | 1% |
| Katherine Britten | 9/10 | 3673 days | 1% |
| Trevor Wichman | 9/10 | 3714 days | 1% |
| Jan Towers | 10/10 | 4013 days | 0% |
| isabel Zander | 7/10 | 4014 days | 0% |
| Corinne | 8/10 | 4016 days | 0% |
| Martin Sajdok | 5/10 | 4017 days | 0% |
| Camille Bellay | 7/10 | 4017 days | 0% |
| Garry Renton | 7/10 | 4022 days | 0% |
| Paula Renton | 7/10 | 4022 days | 0% |
| Simon Mehlmann | 7/10 | 4023 days | 0% |
| Carolin Siegert | 8/10 | 4023 days | 0% |
| Sarah Beyeler | 10/10 | 4045 days | 0% |
| Kim Lavener | 10/10 | 4045 days | 0% |
| Rosie | 7/10 | 4046 days | 0% |
| Anna Sternberg | 6/10 | 4047 days | 0% |
| Steffen | 9/10 | 4049 days | 0% |
| Nina Helmling | 8/10 | 4049 days | 0% |
| Friederike Kranzin | 7/10 | 4053 days | 0% |
| Guillaume | 6/10 | 4055 days | 0% |
| Roy Matthieu | 7/10 | 4057 days | 0% |
| Cindy Benayoum | 7/10 | 4057 days | 0% |
| Simon Tanguy | 8/10 | 4065 days | 0% |
| David Krasner | 9/10 | 4071 days | 0% |
| Susan | 8/10 | 4071 days | 0% |
| Jesseca Klausch | 6/10 | 4072 days | 0% |
| Vincent Schaeflier | 6/10 | 4072 days | 0% |
| Timothee Serres | 7/10 | 4076 days | 0% |
| Jesse Flynn | 6/10 | 4081 days | 0% |
| Claudia | 10/10 | 4083 days | 0% |
| Stuart Wilson | 8/10 | 4101 days | 0% |
| Marine | 9/10 | 4102 days | 0% |
| Supiot Zudovic | 10/10 | 4393 days | 1% |
| Iban Dupont | 7/10 | 4394 days | 1% |
| Guillaume Boudrand | 8/10 | 4394 days | 1% |
| Rampon | 9/10 | 4398 days | 1% |
| Jirka Sirka | 8/10 | 4399 days | 1% |
| Debiesse | 9/10 | 4399 days | 1% |
| Jitka Zenahlikova | 5/10 | 4403 days | 0% |
| Gale Willcocks | 10/10 | 4404 days | 1% |
| Ken Richardson | 8/10 | 4404 days | 1% |
| Cloarec Guillaume | 9/10 | 4406 days | 1% |
| Kathy Arthurs | 8/10 | 4411 days | 1% |
| Claire | 7/10 | 4411 days | 1% |
| Brendon Furney | 9/10 | 4415 days | 1% |
| Sanchez | 2/10 | 4423 days | 0% |
| Mary Neustroski | 9/10 | 4425 days | 1% |
| Scholler | 10/10 | 4470 days | 1% |
| Nadine and Jan | 8/10 | 4483 days | 1% |
| Frederick Neilsen | 8/10 | 4513 days | 1% |
| Paulmiriamgarry | 10/10 | 4654 days | 1% |
| Numa Brouimet | 7/10 | 4772 days | 1% |
| Virgil Anabel | 9/10 | 4772 days | 1% |
| Melanie Friessen | 6/10 | 4778 days | 1% |
| D van Dongen | 7/10 | 4780 days | 1% |
| David Perry | 8/10 | 4785 days | 1% |
| pamr | 8/10 | 4789 days | 1% |
| M Neuman | 8/10 | 4797 days | 1% |
| A Sorg | 10/10 | 4797 days | 1% |
| ge04jen | 7/10 | 4836 days | 1% |
| hendrik king | 7/10 | 4836 days | 1% |
| jule | 8/10 | 4897 days | 1% |
| Ryan Dorsey | 8/10 | 5139 days | 1% |
| Kathleen Brown | 8/10 | 5140 days | 1% |
| Pete H | 2/10 | 5516 days | 0% |
| hermine Petz | 2/10 | 5529 days | 0% |
| Mike Kirchner | 6/10 | 5531 days | 1% |
| Ann Grandchamp | 10/10 | 5549 days | 1% |
| Holliger | 7/10 | 5552 days | 1% |
| Kane Chain | 6/10 | 5552 days | 1% |
| Glenn Nicholson | 8/10 | 5555 days | 1% |
| sanneb1 | 7/10 | 5582 days | 1% |
| jamesg | 8/10 | 5595 days | 1% |
| Bas van Schagen | 7/10 | 5604 days | 1% |
| Des Longville | 7/10 | 5750 days | 1% |
| VirginiaR | 9/10 | 5833 days | 1% |
| Raewyn | 7/10 | 5838 days | 1% |
| Sally477 | 9/10 | 5842 days | 1% |
| Limor | 9/10 | 5912 days | 1% |
| Hove | 8/10 | 5913 days | 1% |
| Lieke | 8/10 | 5914 days | 1% |
| martin piper | 8/10 | 5917 days | 1% |
| purplekat99 | 10/10 | 5962 days | 1% |
| Patricia | 10/10 | 5963 days | 1% |
| Tiana | 8/10 | 5981 days | 1% |
| Raey | 10/10 | 6039 days | 1% |
| Carmen | 3/10 | 6093 days | 0% |
| Dave | 7/10 | 6101 days | 1% |
| Sheila Haran | 7/10 | 6213 days | 1% |
| Caroline Cole | 4/10 | 6218 days | 0% |
| Wendy | 8/10 | 6225 days | 1% |
| Annette Hurst | 8/10 | 6231 days | 1% |
| Phil Connelly | 7/10 | 6233 days | 1% |
| Andria Davis | 9/10 | 6234 days | 1% |
| Georgina Mulligan | 7/10 | 6234 days | 1% |
| Claire Masling | 8/10 | 6241 days | 1% |
| Christian Schwerdt | 7/10 | 6242 days | 1% |
| Jackie Horwell | 10/10 | 6242 days | 1% |
| Gustavo | 7/10 | 6242 days | 1% |
| Sean Pierce | 5/10 | 6246 days | 0% |
| Roger and Heather Smith | 10/10 | 6246 days | 1% |
| Tobias Rahm | 10/10 | 6246 days | 1% |
| Roman | 6/10 | 6252 days | 1% |
| ranker_851 | 8/10 | 6252 days | 1% |
| Vaclaf | 8/10 | 6252 days | 1% |
| Sebastian Bleck | 7/10 | 6256 days | 1% |
| Emma Dolk | 4/10 | 6257 days | 0% |
| Sheryl | 8/10 | 6278 days | 1% |
| David | 8/10 | 6287 days | 1% |
| Iain | 6/10 | 6288 days | 1% |
| Fred and Tim | 7/10 | 6322 days | 1% |
| George | 9/10 | 6557 days | 1% |
| Matous | 7/10 | 6562 days | 1% |
| clairekidd | 7/10 | 6570 days | 1% |
| Jonas | 3/10 | 6576 days | 0% |
| Stefan | 7/10 | 6601 days | 1% |
| Stefan | 8/10 | 6611 days | 1% |
| Justin | 9/10 | 6611 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
-0.76% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 59 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 40 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 37 | -0.70% |
| 38 | -0.72% |
| 39 | -0.74% |
| 40 | -0.76% |
| 41 | -0.78% |
| 42 | -0.80% |
| 43 | -0.81% |
| … | … |
Balancing Adjustment
14.39% 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.