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

217 Valid Reviews

The Bluebridge Cook Strait Ferry experience has a total of 218 reviews. There are 217 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 217 valid reviews:

Rating Count Percentage
10/10 33
15%
9/10 29
13%
8/10 64
29%
7/10 54
25%
6/10 17
8%
5/10 5
2%
4/10 4
2%
3/10 4
2%
2/10 3
1%
1/10 4
2%

75.85% Average

The raw data average (mean) for all the Bluebridge Cook Strait Ferry valid reviews is 75.85% and is based on 217 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 217 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

57.59%

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
Jonathan 1/10 83 days 96%
PeteR 3/10 114 days 100%
La Vie 1/10 297 days 83%
Pauline Kane 10/10 875 days 17%
Roy Sandbrook 10/10 1028 days 8%
Nickclev 3/10 1059 days 5%
Pepe Huebner 4/10 1483 days 4%
Jennie Tollerton 8/10 1545 days 5%
Phil Baker 9/10 1548 days 5%
Lily Roelofs 1/10 1575 days 4%
Vince Midmore 1/10 1817 days 3%
Francesca Scott 10/10 1825 days 5%
Erna Muller 9/10 1833 days 5%
Flip Hoogeveen 8/10 1833 days 4%
Chaulet 5/10 1836 days 4%
Felix Koehler 4/10 1837 days 4%
Kristina Nunoz 7/10 1837 days 4%
Becky Fox 7/10 1839 days 4%
Emma Millett 8/10 1839 days 4%
Rohzine 7/10 1839 days 4%
P and W Gene 8/10 1840 days 4%
Maaike 8/10 1868 days 4%
T Geelen 8/10 1868 days 4%
Wendy Steer 8/10 1874 days 4%
Marcel Felder 7/10 1878 days 4%
Jonas Gorb 8/10 1882 days 4%
Rahel 7/10 1882 days 4%
Maria Eriksson 7/10 1885 days 4%
Gilbert Baptiste 8/10 1885 days 4%
Emilie Bavard 7/10 1885 days 4%
Josh Bird 7/10 1887 days 4%
Jemima Brown 7/10 1887 days 4%
Aurelie Otis 9/10 1889 days 5%
Jake Bullin 10/10 1891 days 5%
Lisa 10/10 1892 days 5%
Bina Johansson 10/10 1902 days 5%
Sabrina and Hannes 8/10 1905 days 4%
Rogier Post 7/10 1907 days 4%
Michal Za'heryuk 8/10 1909 days 4%
Karine Dransart 8/10 1913 days 4%
Samuel Michalak 7/10 1916 days 4%
Ben 7/10 1919 days 4%
Julian Gury 7/10 1922 days 4%
Fazeel Ali 10/10 1970 days 4%
Anna 10/10 2123 days 4%
Jan Berendsen 9/10 2127 days 4%
Jorge Anderson 8/10 2127 days 4%
Simon Schatz 8/10 2129 days 4%
Thomas Le Buzulier 8/10 2133 days 4%
Kristina Breitwieser 8/10 2134 days 4%
Magali Schwantke 8/10 2137 days 4%
Laura Schratt 6/10 2140 days 3%
Mathilde Arp 8/10 2140 days 4%
Arnd Kohlen 6/10 2140 days 3%
Laerke Soee 7/10 2141 days 4%
Christian Krause 9/10 2141 days 4%
Mark 8/10 2148 days 4%
Hannes 10/10 2152 days 4%
Nathan Raymond 10/10 2154 days 4%
Rachel Bruce 5/10 2155 days 3%
Sunja Abbe 9/10 2157 days 4%
Kristof 7/10 2159 days 3%
Talissa Missiato 10/10 2160 days 4%
Eloise 7/10 2160 days 3%
Julia Scharbert 8/10 2161 days 4%
Severin Knegsch 9/10 2161 days 4%
Pierre Jouffineau 9/10 2162 days 4%
Floren Hoenschler 7/10 2168 days 3%
Johanna 7/10 2168 days 3%
Natasha Harbinson 6/10 2172 days 3%
Sophie Kalnymsky 7/10 2175 days 3%
Clemence and Pedro 8/10 2176 days 4%
Maxim Motheus 8/10 2178 days 4%
Mijke Boesten 6/10 2179 days 3%
Jan 6/10 2182 days 3%
Cindy Rizzo 8/10 2185 days 4%
Ulli 10/10 2188 days 4%
Anna Doßler 9/10 2189 days 4%
Dave O'Brien 10/10 2191 days 4%
Annett Kiessling 7/10 2191 days 3%
Chiara 7/10 2193 days 3%
Levi 8/10 2195 days 4%
Martin Baleja 10/10 2196 days 4%
Asborn Damgaard 9/10 2200 days 4%
Leo James 8/10 2200 days 4%
Sophie NIemann 10/10 2201 days 4%
Edwine 8/10 2201 days 4%
Jonathan and Gulsen 10/10 2210 days 4%
Tatiana 10/10 2210 days 4%
Valerie Balcom 8/10 2210 days 4%
Raviv Regev 8/10 2225 days 3%
Monika Dippel 8/10 2228 days 3%
Marc 6/10 2228 days 3%
Christine Slowiak 8/10 2229 days 3%
Justin Kechanski 6/10 2229 days 3%
Judith Goodyear 7/10 2238 days 3%
Hannah Fidora 8/10 2241 days 3%
Sarah Boettcher 9/10 2289 days 3%
Katherine Halliday 9/10 2509 days 3%
Christoph 8/10 2510 days 3%
Katherine Britten 9/10 2512 days 3%
Trevor Wichman 9/10 2553 days 3%
Jan Towers 10/10 2852 days 2%
isabel Zander 7/10 2853 days 2%
Corinne 8/10 2855 days 2%
Martin Sajdok 5/10 2856 days 2%
Camille Bellay 7/10 2856 days 2%
Garry Renton 7/10 2861 days 2%
Paula Renton 7/10 2861 days 2%
Simon Mehlmann 7/10 2862 days 2%
Carolin Siegert 8/10 2862 days 2%
Sarah Beyeler 10/10 2884 days 2%
Kim Lavener 10/10 2884 days 2%
Rosie 7/10 2885 days 2%
Anna Sternberg 6/10 2886 days 2%
Steffen 9/10 2888 days 2%
Nina Helmling 8/10 2888 days 2%
Friederike Kranzin 7/10 2892 days 2%
Guillaume 6/10 2894 days 2%
Roy Matthieu 7/10 2896 days 2%
Cindy Benayoum 7/10 2896 days 2%
Simon Tanguy 8/10 2904 days 2%
David Krasner 9/10 2910 days 2%
Susan 8/10 2910 days 2%
Jesseca Klausch 6/10 2911 days 2%
Vincent Schaeflier 6/10 2911 days 2%
Timothee Serres 7/10 2915 days 2%
Jesse Flynn 6/10 2920 days 2%
Claudia 10/10 2922 days 2%
Stuart Wilson 8/10 2940 days 2%
Marine 9/10 2941 days 2%
Supiot Zudovic 10/10 3232 days 1%
Iban Dupont 7/10 3233 days 1%
Guillaume Boudrand 8/10 3233 days 1%
Rampon 9/10 3237 days 1%
Jirka Sirka 8/10 3238 days 1%
Debiesse 9/10 3238 days 1%
Jitka Zenahlikova 5/10 3242 days 1%
Gale Willcocks 10/10 3243 days 1%
Ken Richardson 8/10 3243 days 1%
Cloarec Guillaume 9/10 3245 days 1%
Kathy Arthurs 8/10 3250 days 1%
Claire 7/10 3250 days 1%
Brendon Furney 9/10 3254 days 1%
Sanchez 2/10 3262 days 1%
Mary Neustroski 9/10 3264 days 1%
Scholler 10/10 3309 days 1%
Nadine and Jan 8/10 3322 days 1%
Frederick Neilsen 8/10 3352 days 1%
Paulmiriamgarry 10/10 3493 days 0%
Numa Brouimet 7/10 3611 days 0%
Virgil Anabel 9/10 3611 days 0%
Melanie Friessen 6/10 3617 days 0%
D van Dongen 7/10 3619 days 0%
David Perry 8/10 3624 days 0%
pamr 8/10 3628 days 0%
M Neuman 8/10 3636 days 0%
A Sorg 10/10 3636 days 0%
ge04jen 7/10 3675 days 1%
hendrik king 7/10 3675 days 1%
jule 8/10 3736 days 1%
Ryan Dorsey 8/10 3978 days 1%
Kathleen Brown 8/10 3979 days 1%
Pete H 2/10 4355 days 1%
hermine Petz 2/10 4368 days 1%
Mike Kirchner 6/10 4370 days 1%
Ann Grandchamp 10/10 4388 days 1%
Holliger 7/10 4391 days 1%
Kane Chain 6/10 4391 days 1%
Glenn Nicholson 8/10 4394 days 1%
sanneb1 7/10 4421 days 1%
jamesg 8/10 4434 days 1%
Bas van Schagen 7/10 4443 days 1%
Des Longville 7/10 4589 days 1%
VirginiaR 9/10 4672 days 1%
Raewyn 7/10 4677 days 1%
Sally477 9/10 4681 days 1%
Limor 9/10 4751 days 1%
Hove 8/10 4752 days 1%
Lieke 8/10 4752 days 1%
martin piper 8/10 4756 days 1%
purplekat99 10/10 4801 days 1%
Patricia 10/10 4801 days 1%
Tiana 8/10 4819 days 1%
Raey 10/10 4878 days 1%
Carmen 3/10 4932 days 1%
Dave 7/10 4939 days 1%
Sheila Haran 7/10 5052 days 1%
Caroline Cole 4/10 5057 days 1%
Wendy 8/10 5064 days 1%
Annette Hurst 8/10 5070 days 1%
Phil Connelly 7/10 5072 days 1%
Andria Davis 9/10 5073 days 1%
Georgina Mulligan 7/10 5073 days 1%
Claire Masling 8/10 5080 days 1%
Christian Schwerdt 7/10 5081 days 1%
Jackie Horwell 10/10 5081 days 1%
Gustavo 7/10 5081 days 1%
Sean Pierce 5/10 5085 days 1%
Roger and Heather Smith 10/10 5085 days 1%
Tobias Rahm 10/10 5085 days 1%
Roman 6/10 5091 days 1%
ranker_851 8/10 5091 days 1%
Vaclaf 8/10 5091 days 1%
Sebastian Bleck 7/10 5095 days 1%
Emma Dolk 4/10 5096 days 1%
Sheryl 8/10 5117 days 1%
David 8/10 5126 days 1%
Iain 6/10 5127 days 1%
Fred and Tim 7/10 5161 days 1%
George 9/10 5396 days 1%
Matous 7/10 5401 days 1%
clairekidd 7/10 5409 days 1%
Jonas 3/10 5415 days 1%
Stefan 7/10 5440 days 1%
Stefan 8/10 5450 days 1%
Justin 9/10 5450 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

-1.46% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 48 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 71 days. Adjustments are according to the following table.

Days Adjustment
68 -1.40%
69 -1.42%
70 -1.44%
71 -1.46%
72 -1.48%
73 -1.50%
74 -1.52%

Final Ranking Score

56%

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.