Ranking Score Explained

Hi there, 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.

Nick Morrison's avatar

Nick Morrison

Rankers owner

Bluebridge Cook Strait Ferry

Valid Reviews

214 Valid Reviews

The Bluebridge Cook Strait Ferry experience has a total of 214 valid reviews. There are no 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 214 valid reviews:

Rating Count Percentage
10/10 33
15%
9/10 29
14%
8/10 64
30%
7/10 54
25%
6/10 17
8%
5/10 5
2%
4/10 4
2%
3/10 3
1%
2/10 3
1%
1/10 2
1%

76.68% Average

The raw data average (mean) for all the Bluebridge Cook Strait Ferry valid reviews is 76.68% and is based on 214 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 214 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

78.72%

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 Face-to-Face Weight Relative Weight
Pauline Kane 10/10 175 days 95.15 100%
Roy Sandbrook 10/10 328 days 82.95 87%
Nickclev 3/10 359 days 61.27 64%
Pepe Huebner 4/10 782 days 16.21 17%
Jennie Tollerton 8/10 845 days true 14.16 15%
Phil Baker 9/10 848 days true 14.67 15%
Lily Roelofs 1/10 874 days 9.3 10%
Vince Midmore 1/10 1116 days 3.62 4%
Francesca Scott 10/10 1125 days true 4.94 5%
Erna Muller 9/10 1133 days true 4.93 5%
Flip Hoogeveen 8/10 1133 days true 4.68 5%
Chaulet 5/10 1136 days true 3.99 4%
Felix Koehler 4/10 1137 days true 3.89 4%
Kristina Nunoz 7/10 1137 days true 4.48 5%
Becky Fox 7/10 1139 days true 4.47 5%
Emma Millett 8/10 1139 days true 4.67 5%
Rohzine 7/10 1139 days true 4.47 5%
P and W Gene 8/10 1140 days true 4.67 5%
Maaike 8/10 1168 days true 4.61 5%
T Geelen 8/10 1168 days true 4.61 5%
Wendy Steer 8/10 1174 days true 4.6 5%
Marcel Felder 7/10 1178 days true 4.4 5%
Jonas Gorb 8/10 1182 days true 4.59 5%
Rahel 7/10 1182 days true 4.4 5%
Maria Eriksson 7/10 1185 days true 4.39 5%
Gilbert Baptiste 8/10 1185 days true 4.58 5%
Emilie Bavard 7/10 1185 days true 4.39 5%
Josh Bird 7/10 1187 days true 4.39 5%
Jemima Brown 7/10 1187 days true 4.39 5%
Aurelie Otis 9/10 1189 days true 4.82 5%
Jake Bullin 10/10 1191 days true 4.81 5%
Lisa 10/10 1192 days true 4.81 5%
Bina Johansson 10/10 1202 days true 4.79 5%
Sabrina and Hannes 8/10 1205 days true 4.55 5%
Rogier Post 7/10 1207 days 4.35 5%
Michal Za'heryuk 8/10 1209 days true 4.54 5%
Karine Dransart 8/10 1213 days true 4.53 5%
Samuel Michalak 7/10 1216 days true 4.33 5%
Ben 7/10 1219 days true 4.33 5%
Julian Gury 7/10 1222 days true 4.32 5%
Fazeel Ali 10/10 1269 days 4.66 5%
Anna 10/10 1423 days true 4.36 5%
Jan Berendsen 9/10 1427 days true 4.35 5%
Jorge Anderson 8/10 1427 days true 4.13 4%
Simon Schatz 8/10 1429 days true 4.13 4%
Thomas Le Buzulier 8/10 1433 days true 4.12 4%
Kristina Breitwieser 8/10 1434 days true 4.12 4%
Magali Schwantke 8/10 1437 days true 4.11 4%
Laura Schratt 6/10 1440 days true 3.59 4%
Mathilde Arp 8/10 1440 days true 4.11 4%
Arnd Kohlen 6/10 1440 days true 3.59 4%
Laerke Soee 7/10 1441 days true 3.93 4%
Christian Krause 9/10 1441 days true 4.32 5%
Mark 8/10 1448 days true 4.09 4%
Hannes 10/10 1452 days true 4.3 5%
Nathan Raymond 10/10 1454 days 4.3 5%
Rachel Bruce 5/10 1455 days true 3.48 4%
Sunja Abbe 9/10 1457 days true 4.29 5%
Kristof 7/10 1459 days true 3.9 4%
Talissa Missiato 10/10 1460 days true 4.29 5%
Eloise 7/10 1460 days true 3.9 4%
Julia Scharbert 8/10 1461 days true 4.07 4%
Severin Knegsch 9/10 1461 days true 4.28 5%
Pierre Jouffineau 9/10 1462 days true 4.28 5%
Floren Hoenschler 7/10 1468 days true 3.89 4%
Johanna 7/10 1468 days true 3.89 4%
Natasha Harbinson 6/10 1472 days true 3.54 4%
Sophie Kalnymsky 7/10 1475 days true 3.87 4%
Clemence and Pedro 8/10 1476 days true 4.04 4%
Maxim Motheus 8/10 1478 days true 4.04 4%
Mijke Boesten 6/10 1479 days true 3.53 4%
Jan 6/10 1482 days true 3.52 4%
Cindy Rizzo 8/10 1485 days true 4.02 4%
Ulli 10/10 1488 days true 4.23 4%
Anna Doßler 9/10 1489 days true 4.23 4%
Dave O'Brien 10/10 1491 days true 4.23 4%
Annett Kiessling 7/10 1491 days true 3.84 4%
Chiara 7/10 1493 days true 3.84 4%
Levi 8/10 1495 days true 4.01 4%
Martin Baleja 10/10 1496 days true 4.22 4%
Asborn Damgaard 9/10 1500 days true 4.21 4%
Leo James 8/10 1500 days true 4.0 4%
Sophie NIemann 10/10 1501 days true 4.21 4%
Edwine 8/10 1501 days true 4.0 4%
Jonathan and Gulsen 10/10 1510 days true 4.19 4%
Tatiana 10/10 1510 days true 4.19 4%
Valerie Balcom 8/10 1510 days true 3.98 4%
Raviv Regev 8/10 1525 days 3.95 4%
Monika Dippel 8/10 1528 days true 3.95 4%
Marc 6/10 1528 days true 3.45 4%
Christine Slowiak 8/10 1529 days 3.94 4%
Justin Kechanski 6/10 1529 days true 3.45 4%
Judith Goodyear 7/10 1538 days true 3.76 4%
Hannah Fidora 8/10 1541 days true 3.92 4%
Sarah Boettcher 9/10 1589 days true 4.03 4%
Katherine Halliday 9/10 1809 days true 3.6 4%
Christoph 8/10 1810 days true 3.42 4%
Katherine Britten 9/10 1812 days true 3.6 4%
Trevor Wichman 9/10 1853 days true 3.52 4%
Jan Towers 10/10 2152 days true 2.93 3%
isabel Zander 7/10 2153 days true 2.67 3%
Corinne 8/10 2155 days true 2.78 3%
Martin Sajdok 5/10 2156 days true 2.37 2%
Camille Bellay 7/10 2156 days true 2.66 3%
Garry Renton 7/10 2161 days true 2.65 3%
Paula Renton 7/10 2161 days true 2.65 3%
Simon Mehlmann 7/10 2162 days true 2.65 3%
Carolin Siegert 8/10 2162 days true 2.77 3%
Sarah Beyeler 10/10 2184 days true 2.87 3%
Kim Lavener 10/10 2184 days true 2.87 3%
Rosie 7/10 2185 days true 2.61 3%
Anna Sternberg 6/10 2186 days true 2.38 2%
Steffen 9/10 2188 days true 2.86 3%
Nina Helmling 8/10 2188 days true 2.72 3%
Friederike Kranzin 7/10 2192 days true 2.6 3%
Guillaume 6/10 2194 days true 2.36 2%
Roy Matthieu 7/10 2196 days true 2.59 3%
Cindy Benayoum 7/10 2196 days true 2.59 3%
Simon Tanguy 8/10 2204 days true 2.69 3%
David Krasner 9/10 2210 days true 2.82 3%
Susan 8/10 2210 days true 2.68 3%
Jesseca Klausch 6/10 2211 days true 2.34 2%
Vincent Schaeflier 6/10 2211 days true 2.34 2%
Timothee Serres 7/10 2215 days true 2.56 3%
Jesse Flynn 6/10 2220 days true 2.32 2%
Claudia 10/10 2222 days true 2.79 3%
Stuart Wilson 8/10 2240 days true 2.62 3%
Marine 9/10 2241 days true 2.76 3%
Supiot Zudovic 10/10 2532 days true 2.19 2%
Iban Dupont 7/10 2533 days true 1.99 2%
Guillaume Boudrand 8/10 2533 days true 2.08 2%
Rampon 9/10 2537 days true 2.18 2%
Jirka Sirka 8/10 2538 days true 2.07 2%
Debiesse 9/10 2538 days true 2.18 2%
Jitka Zenahlikova 5/10 2542 days true 1.76 2%
Gale Willcocks 10/10 2543 days true 2.17 2%
Ken Richardson 8/10 2543 days true 2.06 2%
Cloarec Guillaume 9/10 2545 days true 2.16 2%
Kathy Arthurs 8/10 2550 days true 2.05 2%
Claire 7/10 2550 days true 1.96 2%
Brendon Furney 9/10 2554 days true 2.14 2%
Sanchez 2/10 2562 days true 1.6 2%
Mary Neustroski 9/10 2564 days true 2.13 2%
Scholler 10/10 2609 days 2.04 2%
Nadine and Jan 8/10 2622 days true 1.91 2%
Frederick Neilsen 8/10 2652 days true 1.86 2%
Paulmiriamgarry 10/10 2793 days 1.68 2%
Numa Brouimet 7/10 2911 days true 1.32 1%
Virgil Anabel 9/10 2911 days true 1.45 2%
Melanie Friessen 6/10 2917 days true 1.19 1%
D van Dongen 7/10 2919 days true 1.3 1%
David Perry 8/10 2924 days true 1.35 1%
pamr 8/10 2928 days true 1.34 1%
M Neuman 8/10 2936 days true 1.33 1%
A Sorg 10/10 2936 days true 1.4 1%
ge04jen 7/10 2975 days 1.2 1%
hendrik king 7/10 2975 days 1.2 1%
jule 8/10 3036 days 1.14 1%
Ryan Dorsey 8/10 3278 days true 0.69 1%
Kathleen Brown 8/10 3279 days true 0.69 1%
Pete H 2/10 3655 days true 0.0 0%
hermine Petz 2/10 3668 days true 0.0 0%
Mike Kirchner 6/10 3670 days true 0.0 0%
Ann Grandchamp 10/10 3688 days true 0.0 0%
Holliger 7/10 3691 days true 0.0 0%
Kane Chain 6/10 3691 days true 0.0 0%
Glenn Nicholson 8/10 3694 days true 0.0 0%
sanneb1 7/10 3721 days true 0.0 0%
jamesg 8/10 3734 days true 0.0 0%
Bas van Schagen 7/10 3743 days true 0.0 0%
Des Longville 7/10 3889 days 0.0 0%
VirginiaR 9/10 3972 days true 0.0 0%
Raewyn 7/10 3977 days true 0.0 0%
Sally477 9/10 3981 days 0.0 0%
Limor 9/10 4051 days true 0.0 0%
Hove 8/10 4052 days true 0.0 0%
Lieke 8/10 4052 days true 0.0 0%
martin piper 8/10 4056 days 0.0 0%
purplekat99 10/10 4101 days 0.0 0%
Patricia 10/10 4101 days true 0.0 0%
Tiana 8/10 4119 days true 0.0 0%
Raey 10/10 4178 days true 0.0 0%
Carmen 3/10 4232 days true 0.0 0%
Dave 7/10 4239 days 0.0 0%
Sheila Haran 7/10 4352 days true 0.0 0%
Caroline Cole 4/10 4357 days true 0.0 0%
Wendy 8/10 4364 days true 0.0 0%
Annette Hurst 8/10 4370 days true 0.0 0%
Phil Connelly 7/10 4372 days true 0.0 0%
Andria Davis 9/10 4373 days true 0.0 0%
Georgina Mulligan 7/10 4373 days true 0.0 0%
Claire Masling 8/10 4380 days true 0.0 0%
Christian Schwerdt 7/10 4381 days true 0.0 0%
Jackie Horwell 10/10 4381 days true 0.0 0%
Gustavo 7/10 4381 days true 0.0 0%
Sean Pierce 5/10 4385 days true 0.0 0%
Roger and Heather Smith 10/10 4385 days true 0.0 0%
Tobias Rahm 10/10 4385 days true 0.0 0%
Roman 6/10 4391 days true 0.0 0%
ranker_851 8/10 4391 days true 0.0 0%
Vaclaf 8/10 4391 days true 0.0 0%
Sebastian Bleck 7/10 4395 days true 0.0 0%
Emma Dolk 4/10 4396 days true 0.0 0%
Sheryl 8/10 4417 days 0.0 0%
David 8/10 4426 days true 0.0 0%
Iain 6/10 4427 days true 0.0 0%
Fred and Tim 7/10 4461 days true 0.0 0%
George 9/10 4696 days true 0.0 0%
Matous 7/10 4701 days true 0.0 0%
clairekidd 7/10 4709 days true 0.0 0%
Jonas 3/10 4715 days true 0.0 0%
Stefan 7/10 4740 days true 0.0 0%
Stefan 8/10 4750 days true 0.0 0%
Justin 9/10 4750 days true 0.0 0%

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

-3.34% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 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 199 days.

The Bluebridge Cook Strait Ferry experience has been adjusted for 167 days. Adjustments are according to the following table.

Days Adjustment
164 -3.28%
165 -3.30%
166 -3.32%
167 -3.34%
168 -3.36%
169 -3.38%
170 -3.40%

Final Ranking Score

75%

The final ranking score once adjustments and rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.

If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.