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

80.07%

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 10/10 457 days 66.91 100%
Roy Sandbrook 10/10 610 days 42.27 63%
Nickclev 3/10 641 days 29.0 43%
Pepe Huebner 4/10 1064 days 4.07 6%
Jennie Tollerton 8/10 1127 days true 4.69 7%
Phil Baker 9/10 1130 days true 4.93 7%
Lily Roelofs 1/10 1156 days 3.56 5%
Vince Midmore 1/10 1398 days 3.22 5%
Francesca Scott 10/10 1407 days true 4.39 7%
Erna Muller 9/10 1415 days true 4.37 7%
Flip Hoogeveen 8/10 1415 days true 4.16 6%
Chaulet 5/10 1418 days true 3.54 5%
Felix Koehler 4/10 1419 days true 3.45 5%
Kristina Nunoz 7/10 1419 days true 3.97 6%
Becky Fox 7/10 1421 days true 3.97 6%
Emma Millett 8/10 1421 days true 4.14 6%
Rohzine 7/10 1421 days true 3.97 6%
P and W Gene 8/10 1422 days true 4.14 6%
Maaike 8/10 1450 days true 4.09 6%
T Geelen 8/10 1450 days true 4.09 6%
Wendy Steer 8/10 1456 days true 4.08 6%
Marcel Felder 7/10 1460 days true 3.9 6%
Jonas Gorb 8/10 1464 days true 4.06 6%
Rahel 7/10 1464 days true 3.89 6%
Maria Eriksson 7/10 1467 days true 3.89 6%
Gilbert Baptiste 8/10 1467 days true 4.06 6%
Emilie Bavard 7/10 1467 days true 3.89 6%
Josh Bird 7/10 1469 days true 3.88 6%
Jemima Brown 7/10 1469 days true 3.88 6%
Aurelie Otis 9/10 1471 days true 4.26 6%
Jake Bullin 10/10 1473 days true 4.26 6%
Lisa 10/10 1474 days true 4.26 6%
Bina Johansson 10/10 1484 days true 4.24 6%
Sabrina and Hannes 8/10 1487 days true 4.02 6%
Rogier Post 7/10 1489 days 3.85 6%
Michal Za'heryuk 8/10 1491 days true 4.01 6%
Karine Dransart 8/10 1495 days true 4.01 6%
Samuel Michalak 7/10 1498 days true 3.83 6%
Ben 7/10 1501 days true 3.83 6%
Julian Gury 7/10 1504 days true 3.82 6%
Fazeel Ali 10/10 1551 days 4.11 6%
Anna 10/10 1705 days true 3.81 6%
Jan Berendsen 9/10 1709 days true 3.8 6%
Jorge Anderson 8/10 1709 days true 3.61 5%
Simon Schatz 8/10 1711 days true 3.6 5%
Thomas Le Buzulier 8/10 1715 days true 3.6 5%
Kristina Breitwieser 8/10 1716 days true 3.6 5%
Magali Schwantke 8/10 1719 days true 3.59 5%
Laura Schratt 6/10 1722 days true 3.13 5%
Mathilde Arp 8/10 1722 days true 3.58 5%
Arnd Kohlen 6/10 1722 days true 3.13 5%
Laerke Soee 7/10 1723 days true 3.43 5%
Christian Krause 9/10 1723 days true 3.77 6%
Mark 8/10 1730 days true 3.57 5%
Hannes 10/10 1734 days true 3.75 6%
Nathan Raymond 10/10 1736 days 3.75 6%
Rachel Bruce 5/10 1737 days true 3.03 5%
Sunja Abbe 9/10 1739 days true 3.74 6%
Kristof 7/10 1741 days true 3.4 5%
Talissa Missiato 10/10 1742 days true 3.73 6%
Eloise 7/10 1742 days true 3.4 5%
Julia Scharbert 8/10 1743 days true 3.55 5%
Severin Knegsch 9/10 1743 days true 3.73 6%
Pierre Jouffineau 9/10 1744 days true 3.73 6%
Floren Hoenschler 7/10 1750 days true 3.38 5%
Johanna 7/10 1750 days true 3.38 5%
Natasha Harbinson 6/10 1754 days true 3.08 5%
Sophie Kalnymsky 7/10 1757 days true 3.37 5%
Clemence and Pedro 8/10 1758 days true 3.52 5%
Maxim Motheus 8/10 1760 days true 3.51 5%
Mijke Boesten 6/10 1761 days true 3.07 5%
Jan 6/10 1764 days true 3.06 5%
Cindy Rizzo 8/10 1767 days true 3.5 5%
Ulli 10/10 1770 days true 3.68 5%
Anna Doßler 9/10 1771 days true 3.68 5%
Dave O'Brien 10/10 1773 days true 3.67 5%
Annett Kiessling 7/10 1773 days true 3.34 5%
Chiara 7/10 1775 days true 3.34 5%
Levi 8/10 1777 days true 3.48 5%
Martin Baleja 10/10 1778 days true 3.66 5%
Asborn Damgaard 9/10 1782 days true 3.66 5%
Leo James 8/10 1782 days true 3.47 5%
Sophie NIemann 10/10 1783 days true 3.65 5%
Edwine 8/10 1783 days true 3.47 5%
Jonathan and Gulsen 10/10 1792 days true 3.64 5%
Tatiana 10/10 1792 days true 3.64 5%
Valerie Balcom 8/10 1792 days true 3.45 5%
Raviv Regev 8/10 1807 days 3.43 5%
Monika Dippel 8/10 1810 days true 3.42 5%
Marc 6/10 1810 days true 2.99 4%
Christine Slowiak 8/10 1811 days 3.42 5%
Justin Kechanski 6/10 1811 days true 2.99 4%
Judith Goodyear 7/10 1820 days true 3.26 5%
Hannah Fidora 8/10 1823 days true 3.4 5%
Sarah Boettcher 9/10 1871 days true 3.48 5%
Katherine Halliday 9/10 2091 days true 3.05 5%
Christoph 8/10 2092 days true 2.9 4%
Katherine Britten 9/10 2094 days true 3.05 5%
Trevor Wichman 9/10 2135 days true 2.96 4%
Jan Towers 10/10 2434 days true 2.38 4%
isabel Zander 7/10 2435 days true 2.16 3%
Corinne 8/10 2437 days true 2.26 3%
Martin Sajdok 5/10 2438 days true 1.92 3%
Camille Bellay 7/10 2438 days true 2.16 3%
Garry Renton 7/10 2443 days true 2.15 3%
Paula Renton 7/10 2443 days true 2.15 3%
Simon Mehlmann 7/10 2444 days true 2.15 3%
Carolin Siegert 8/10 2444 days true 2.24 3%
Sarah Beyeler 10/10 2466 days true 2.32 3%
Kim Lavener 10/10 2466 days true 2.32 3%
Rosie 7/10 2467 days true 2.11 3%
Anna Sternberg 6/10 2468 days true 1.92 3%
Steffen 9/10 2470 days true 2.31 3%
Nina Helmling 8/10 2470 days true 2.19 3%
Friederike Kranzin 7/10 2474 days true 2.09 3%
Guillaume 6/10 2476 days true 1.91 3%
Roy Matthieu 7/10 2478 days true 2.09 3%
Cindy Benayoum 7/10 2478 days true 2.09 3%
Simon Tanguy 8/10 2486 days true 2.16 3%
David Krasner 9/10 2492 days true 2.27 3%
Susan 8/10 2492 days true 2.15 3%
Jesseca Klausch 6/10 2493 days true 1.88 3%
Vincent Schaeflier 6/10 2493 days true 1.88 3%
Timothee Serres 7/10 2497 days true 2.05 3%
Jesse Flynn 6/10 2502 days true 1.86 3%
Claudia 10/10 2504 days true 2.24 3%
Stuart Wilson 8/10 2522 days true 2.1 3%
Marine 9/10 2523 days true 2.21 3%
Supiot Zudovic 10/10 2814 days true 1.64 2%
Iban Dupont 7/10 2815 days true 1.49 2%
Guillaume Boudrand 8/10 2815 days true 1.55 2%
Rampon 9/10 2819 days true 1.63 2%
Jirka Sirka 8/10 2820 days true 1.54 2%
Debiesse 9/10 2820 days true 1.62 2%
Jitka Zenahlikova 5/10 2824 days true 1.31 2%
Gale Willcocks 10/10 2825 days true 1.61 2%
Ken Richardson 8/10 2825 days true 1.53 2%
Cloarec Guillaume 9/10 2827 days true 1.61 2%
Kathy Arthurs 8/10 2832 days true 1.52 2%
Claire 7/10 2832 days true 1.46 2%
Brendon Furney 9/10 2836 days true 1.59 2%
Sanchez 2/10 2844 days true 1.18 2%
Mary Neustroski 9/10 2846 days true 1.57 2%
Scholler 10/10 2891 days 1.49 2%
Nadine and Jan 8/10 2904 days true 1.39 2%
Frederick Neilsen 8/10 2934 days true 1.33 2%
Paulmiriamgarry 10/10 3075 days 1.13 2%
Numa Brouimet 7/10 3193 days true 0.81 1%
Virgil Anabel 9/10 3193 days true 0.89 1%
Melanie Friessen 6/10 3199 days true 0.73 1%
D van Dongen 7/10 3201 days true 0.8 1%
David Perry 8/10 3206 days true 0.83 1%
pamr 8/10 3210 days true 0.82 1%
M Neuman 8/10 3218 days true 0.8 1%
A Sorg 10/10 3218 days true 0.85 1%
ge04jen 7/10 3257 days 0.7 1%
hendrik king 7/10 3257 days 0.7 1%
jule 8/10 3318 days 0.62 1%
Ryan Dorsey 8/10 3560 days true 0.17 0%
Kathleen Brown 8/10 3561 days true 0.17 0%
Pete H 2/10 3937 days true 0.0 0%
hermine Petz 2/10 3950 days true 0.0 0%
Mike Kirchner 6/10 3952 days true 0.0 0%
Ann Grandchamp 10/10 3970 days true 0.0 0%
Holliger 7/10 3973 days true 0.0 0%
Kane Chain 6/10 3973 days true 0.0 0%
Glenn Nicholson 8/10 3976 days true 0.0 0%
sanneb1 7/10 4003 days true 0.0 0%
jamesg 8/10 4016 days true 0.0 0%
Bas van Schagen 7/10 4025 days true 0.0 0%
Des Longville 7/10 4171 days 0.0 0%
VirginiaR 9/10 4254 days true 0.0 0%
Raewyn 7/10 4259 days true 0.0 0%
Sally477 9/10 4263 days 0.0 0%
Limor 9/10 4333 days true 0.0 0%
Hove 8/10 4334 days true 0.0 0%
Lieke 8/10 4334 days true 0.0 0%
martin piper 8/10 4338 days 0.0 0%
purplekat99 10/10 4383 days 0.0 0%
Patricia 10/10 4383 days true 0.0 0%
Tiana 8/10 4401 days true 0.0 0%
Raey 10/10 4459 days true 0.0 0%
Carmen 3/10 4514 days true 0.0 0%
Dave 7/10 4521 days 0.0 0%
Sheila Haran 7/10 4634 days true 0.0 0%
Caroline Cole 4/10 4639 days true 0.0 0%
Wendy 8/10 4646 days true 0.0 0%
Annette Hurst 8/10 4652 days true 0.0 0%
Phil Connelly 7/10 4654 days true 0.0 0%
Andria Davis 9/10 4655 days true 0.0 0%
Georgina Mulligan 7/10 4655 days true 0.0 0%
Claire Masling 8/10 4662 days true 0.0 0%
Christian Schwerdt 7/10 4663 days true 0.0 0%
Jackie Horwell 10/10 4663 days true 0.0 0%
Gustavo 7/10 4663 days true 0.0 0%
Sean Pierce 5/10 4667 days true 0.0 0%
Roger and Heather Smith 10/10 4667 days true 0.0 0%
Tobias Rahm 10/10 4667 days true 0.0 0%
Roman 6/10 4673 days true 0.0 0%
ranker_851 8/10 4673 days true 0.0 0%
Vaclaf 8/10 4673 days true 0.0 0%
Sebastian Bleck 7/10 4677 days true 0.0 0%
Emma Dolk 4/10 4678 days true 0.0 0%
Sheryl 8/10 4699 days 0.0 0%
David 8/10 4708 days true 0.0 0%
Iain 6/10 4709 days true 0.0 0%
Fred and Tim 7/10 4743 days true 0.0 0%
George 9/10 4978 days true 0.0 0%
Matous 7/10 4983 days true 0.0 0%
clairekidd 7/10 4991 days true 0.0 0%
Jonas 3/10 4997 days true 0.0 0%
Stefan 7/10 5022 days true 0.0 0%
Stefan 8/10 5032 days true 0.0 0%
Justin 9/10 5032 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

-4.07% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 43 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 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.01%
198 -4.03%
199 -4.05%
200 -4.07%
201 -4.09%
202 -4.11%
203 -4.13%

Final Ranking Score

76%

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.