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 215 reviews. There are 214 valid reviews that are included when calculating the ranking score and 1 invalid review 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

78.99%

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 10/10 210 days 93.01 100%
Roy Sandbrook 10/10 363 days 79.12 85%
Nickclev 3/10 394 days 58.06 62%
Pepe Huebner 4/10 817 days 13.62 15%
Jennie Tollerton 8/10 880 days true 11.71 13%
Phil Baker 9/10 883 days true 12.12 13%
Lily Roelofs 1/10 909 days 7.65 8%
Vince Midmore 1/10 1151 days 3.57 4%
Francesca Scott 10/10 1160 days true 4.87 5%
Erna Muller 9/10 1168 days true 4.86 5%
Flip Hoogeveen 8/10 1168 days true 4.61 5%
Chaulet 5/10 1171 days true 3.93 4%
Felix Koehler 4/10 1172 days true 3.83 4%
Kristina Nunoz 7/10 1172 days true 4.41 5%
Becky Fox 7/10 1174 days true 4.41 5%
Emma Millett 8/10 1174 days true 4.6 5%
Rohzine 7/10 1174 days true 4.41 5%
P and W Gene 8/10 1175 days true 4.6 5%
Maaike 8/10 1203 days true 4.55 5%
T Geelen 8/10 1203 days true 4.55 5%
Wendy Steer 8/10 1209 days true 4.54 5%
Marcel Felder 7/10 1213 days true 4.34 5%
Jonas Gorb 8/10 1217 days true 4.52 5%
Rahel 7/10 1217 days true 4.33 5%
Maria Eriksson 7/10 1220 days true 4.33 5%
Gilbert Baptiste 8/10 1220 days true 4.52 5%
Emilie Bavard 7/10 1220 days true 4.33 5%
Josh Bird 7/10 1222 days true 4.32 5%
Jemima Brown 7/10 1222 days true 4.32 5%
Aurelie Otis 9/10 1224 days true 4.75 5%
Jake Bullin 10/10 1226 days true 4.74 5%
Lisa 10/10 1227 days true 4.74 5%
Bina Johansson 10/10 1237 days true 4.72 5%
Sabrina and Hannes 8/10 1240 days true 4.48 5%
Rogier Post 7/10 1242 days 4.29 5%
Michal Za'heryuk 8/10 1244 days true 4.47 5%
Karine Dransart 8/10 1248 days true 4.47 5%
Samuel Michalak 7/10 1251 days true 4.27 5%
Ben 7/10 1254 days true 4.27 5%
Julian Gury 7/10 1257 days true 4.26 5%
Fazeel Ali 10/10 1304 days 4.59 5%
Anna 10/10 1458 days true 4.29 5%
Jan Berendsen 9/10 1462 days true 4.28 5%
Jorge Anderson 8/10 1462 days true 4.07 4%
Simon Schatz 8/10 1464 days true 4.06 4%
Thomas Le Buzulier 8/10 1468 days true 4.06 4%
Kristina Breitwieser 8/10 1469 days true 4.05 4%
Magali Schwantke 8/10 1472 days true 4.05 4%
Laura Schratt 6/10 1475 days true 3.53 4%
Mathilde Arp 8/10 1475 days true 4.04 4%
Arnd Kohlen 6/10 1475 days true 3.53 4%
Laerke Soee 7/10 1476 days true 3.87 4%
Christian Krause 9/10 1476 days true 4.25 5%
Mark 8/10 1483 days true 4.03 4%
Hannes 10/10 1487 days true 4.23 5%
Nathan Raymond 10/10 1489 days 4.23 5%
Rachel Bruce 5/10 1490 days true 3.42 4%
Sunja Abbe 9/10 1492 days true 4.22 5%
Kristof 7/10 1494 days true 3.84 4%
Talissa Missiato 10/10 1495 days true 4.22 5%
Eloise 7/10 1495 days true 3.84 4%
Julia Scharbert 8/10 1496 days true 4.0 4%
Severin Knegsch 9/10 1496 days true 4.22 5%
Pierre Jouffineau 9/10 1497 days true 4.21 5%
Floren Hoenschler 7/10 1503 days true 3.82 4%
Johanna 7/10 1503 days true 3.82 4%
Natasha Harbinson 6/10 1507 days true 3.48 4%
Sophie Kalnymsky 7/10 1510 days true 3.81 4%
Clemence and Pedro 8/10 1511 days true 3.98 4%
Maxim Motheus 8/10 1513 days true 3.97 4%
Mijke Boesten 6/10 1514 days true 3.47 4%
Jan 6/10 1517 days true 3.46 4%
Cindy Rizzo 8/10 1520 days true 3.96 4%
Ulli 10/10 1523 days true 4.16 4%
Anna Doßler 9/10 1524 days true 4.16 4%
Dave O'Brien 10/10 1526 days true 4.16 4%
Annett Kiessling 7/10 1526 days true 3.78 4%
Chiara 7/10 1528 days true 3.78 4%
Levi 8/10 1530 days true 3.94 4%
Martin Baleja 10/10 1531 days true 4.15 4%
Asborn Damgaard 9/10 1535 days true 4.14 4%
Leo James 8/10 1535 days true 3.93 4%
Sophie NIemann 10/10 1536 days true 4.14 4%
Edwine 8/10 1536 days true 3.93 4%
Jonathan and Gulsen 10/10 1545 days true 4.12 4%
Tatiana 10/10 1545 days true 4.12 4%
Valerie Balcom 8/10 1545 days true 3.91 4%
Raviv Regev 8/10 1560 days 3.89 4%
Monika Dippel 8/10 1563 days true 3.88 4%
Marc 6/10 1563 days true 3.39 4%
Christine Slowiak 8/10 1564 days 3.88 4%
Justin Kechanski 6/10 1564 days true 3.39 4%
Judith Goodyear 7/10 1573 days true 3.7 4%
Hannah Fidora 8/10 1576 days true 3.86 4%
Sarah Boettcher 9/10 1624 days true 3.96 4%
Katherine Halliday 9/10 1844 days true 3.53 4%
Christoph 8/10 1845 days true 3.36 4%
Katherine Britten 9/10 1847 days true 3.53 4%
Trevor Wichman 9/10 1888 days true 3.45 4%
Jan Towers 10/10 2187 days true 2.86 3%
isabel Zander 7/10 2188 days true 2.6 3%
Corinne 8/10 2190 days true 2.71 3%
Martin Sajdok 5/10 2191 days true 2.31 2%
Camille Bellay 7/10 2191 days true 2.6 3%
Garry Renton 7/10 2196 days true 2.59 3%
Paula Renton 7/10 2196 days true 2.59 3%
Simon Mehlmann 7/10 2197 days true 2.59 3%
Carolin Siegert 8/10 2197 days true 2.7 3%
Sarah Beyeler 10/10 2219 days true 2.8 3%
Kim Lavener 10/10 2219 days true 2.8 3%
Rosie 7/10 2220 days true 2.55 3%
Anna Sternberg 6/10 2221 days true 2.32 2%
Steffen 9/10 2223 days true 2.79 3%
Nina Helmling 8/10 2223 days true 2.65 3%
Friederike Kranzin 7/10 2227 days true 2.53 3%
Guillaume 6/10 2229 days true 2.31 2%
Roy Matthieu 7/10 2231 days true 2.53 3%
Cindy Benayoum 7/10 2231 days true 2.53 3%
Simon Tanguy 8/10 2239 days true 2.62 3%
David Krasner 9/10 2245 days true 2.75 3%
Susan 8/10 2245 days true 2.61 3%
Jesseca Klausch 6/10 2246 days true 2.28 2%
Vincent Schaeflier 6/10 2246 days true 2.28 2%
Timothee Serres 7/10 2250 days true 2.49 3%
Jesse Flynn 6/10 2255 days true 2.27 2%
Claudia 10/10 2257 days true 2.73 3%
Stuart Wilson 8/10 2275 days true 2.56 3%
Marine 9/10 2276 days true 2.69 3%
Supiot Zudovic 10/10 2567 days true 2.12 2%
Iban Dupont 7/10 2568 days true 1.93 2%
Guillaume Boudrand 8/10 2568 days true 2.01 2%
Rampon 9/10 2572 days true 2.11 2%
Jirka Sirka 8/10 2573 days true 2.0 2%
Debiesse 9/10 2573 days true 2.11 2%
Jitka Zenahlikova 5/10 2577 days true 1.7 2%
Gale Willcocks 10/10 2578 days true 2.1 2%
Ken Richardson 8/10 2578 days true 1.99 2%
Cloarec Guillaume 9/10 2580 days true 2.09 2%
Kathy Arthurs 8/10 2585 days true 1.98 2%
Claire 7/10 2585 days true 1.9 2%
Brendon Furney 9/10 2589 days true 2.08 2%
Sanchez 2/10 2597 days true 1.55 2%
Mary Neustroski 9/10 2599 days true 2.06 2%
Scholler 10/10 2644 days 1.97 2%
Nadine and Jan 8/10 2657 days true 1.85 2%
Frederick Neilsen 8/10 2687 days true 1.79 2%
Paulmiriamgarry 10/10 2828 days 1.61 2%
Numa Brouimet 7/10 2946 days true 1.25 1%
Virgil Anabel 9/10 2946 days true 1.38 1%
Melanie Friessen 6/10 2952 days true 1.13 1%
D van Dongen 7/10 2954 days true 1.24 1%
David Perry 8/10 2959 days true 1.28 1%
pamr 8/10 2963 days true 1.28 1%
M Neuman 8/10 2971 days true 1.26 1%
A Sorg 10/10 2971 days true 1.33 1%
ge04jen 7/10 3010 days 1.14 1%
hendrik king 7/10 3010 days 1.14 1%
jule 8/10 3071 days 1.08 1%
Ryan Dorsey 8/10 3313 days true 0.63 1%
Kathleen Brown 8/10 3314 days true 0.62 1%
Pete H 2/10 3690 days true 0.0 0%
hermine Petz 2/10 3703 days true 0.0 0%
Mike Kirchner 6/10 3705 days true 0.0 0%
Ann Grandchamp 10/10 3723 days true 0.0 0%
Holliger 7/10 3726 days true 0.0 0%
Kane Chain 6/10 3726 days true 0.0 0%
Glenn Nicholson 8/10 3729 days true 0.0 0%
sanneb1 7/10 3756 days true 0.0 0%
jamesg 8/10 3769 days true 0.0 0%
Bas van Schagen 7/10 3778 days true 0.0 0%
Des Longville 7/10 3924 days 0.0 0%
VirginiaR 9/10 4007 days true 0.0 0%
Raewyn 7/10 4012 days true 0.0 0%
Sally477 9/10 4015 days 0.0 0%
Limor 9/10 4086 days true 0.0 0%
Hove 8/10 4087 days true 0.0 0%
Lieke 8/10 4087 days true 0.0 0%
martin piper 8/10 4090 days 0.0 0%
purplekat99 10/10 4136 days 0.0 0%
Patricia 10/10 4136 days true 0.0 0%
Tiana 8/10 4154 days true 0.0 0%
Raey 10/10 4212 days true 0.0 0%
Carmen 3/10 4267 days true 0.0 0%
Dave 7/10 4274 days 0.0 0%
Sheila Haran 7/10 4387 days true 0.0 0%
Caroline Cole 4/10 4392 days true 0.0 0%
Wendy 8/10 4399 days true 0.0 0%
Annette Hurst 8/10 4405 days true 0.0 0%
Phil Connelly 7/10 4407 days true 0.0 0%
Andria Davis 9/10 4408 days true 0.0 0%
Georgina Mulligan 7/10 4408 days true 0.0 0%
Claire Masling 8/10 4415 days true 0.0 0%
Christian Schwerdt 7/10 4416 days true 0.0 0%
Jackie Horwell 10/10 4416 days true 0.0 0%
Gustavo 7/10 4416 days true 0.0 0%
Sean Pierce 5/10 4420 days true 0.0 0%
Roger and Heather Smith 10/10 4420 days true 0.0 0%
Tobias Rahm 10/10 4420 days true 0.0 0%
Roman 6/10 4426 days true 0.0 0%
ranker_851 8/10 4426 days true 0.0 0%
Vaclaf 8/10 4426 days true 0.0 0%
Sebastian Bleck 7/10 4430 days true 0.0 0%
Emma Dolk 4/10 4431 days true 0.0 0%
Sheryl 8/10 4451 days 0.0 0%
David 8/10 4461 days true 0.0 0%
Iain 6/10 4462 days true 0.0 0%
Fred and Tim 7/10 4496 days true 0.0 0%
George 9/10 4731 days true 0.0 0%
Matous 7/10 4736 days true 0.0 0%
clairekidd 7/10 4744 days true 0.0 0%
Jonas 3/10 4750 days true 0.0 0%
Stefan 7/10 4775 days true 0.0 0%
Stefan 8/10 4785 days true 0.0 0%
Justin 9/10 4785 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

-3.98% 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 199 days. Adjustments are according to the following table.

Days Adjustment
196 -3.92%
197 -3.94%
198 -3.96%
199 -3.98%
200 -4.00%
201 -4.02%
202 -4.04%

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.