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 PiwiWiwi Campervans.

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

PiwiWiwi Campervans

Valid Reviews

215 Valid Reviews

The PiwiWiwi Campervans experience has a total of 220 reviews. There are 215 valid reviews that are included when calculating the ranking score and 5 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 215 valid reviews:

Rating Count Percentage
10/10 198
92%
9/10 15
7%
8/10 2
1%
7/10 0
0%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

99.12% Average

The raw data average (mean) for all the PiwiWiwi Campervans valid reviews is 99.12% and is based on 215 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

6 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 215 valid reviews, the experience has 6 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 6 face-to-face reviews:

Rating Count Percentage
10/10 6
100%
9/10 0
0%
8/10 0
0%
7/10 0
0%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

100.00% Average

The raw data average (mean) for all the PiwiWiwi Campervans face-to-face reviews is 100.00% and is based on 6 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

98.84%

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
Kevin Merrill 10/10 28 days 99.88 100%
Mark Slaski 10/10 28 days 99.88 100%
Daisy Baish 10/10 28 days 99.88 100%
Emma Hamasaki 9/10 28 days 99.88 100%
Chris Felicetta 10/10 59 days 99.45 100%
Janet 10/10 59 days 99.45 100%
Phillip H 10/10 59 days 99.45 100%
Tia 10/10 59 days 99.45 100%
Kilolimabravo 10/10 59 days 99.45 100%
Nichole Braase 10/10 59 days 99.45 100%
Sally and Davy 10/10 90 days 98.72 99%
M. Nederveen 9/10 90 days 98.72 99%
Melanie 10/10 90 days 98.72 99%
Katie Cooper 10/10 90 days 98.72 99%
Ed & Catherine 9/10 90 days 98.72 99%
Katherine Paschall 10/10 120 days 97.72 98%
Sandra 10/10 120 days 97.72 98%
Rebecca Sutherland 10/10 120 days 97.72 98%
Olga and Evan Patronik 10/10 120 days 97.72 98%
Lore & Sébastien 10/10 120 days 97.72 98%
Scott and Zef 10/10 120 days 97.72 98%
Sophie Van Tol 10/10 151 days 96.39 96%
Maire Peate 10/10 151 days 96.39 96%
Avalon Ridler 10/10 151 days 96.39 96%
Sarah 10/10 151 days 96.39 96%
Jonneke van de Kamp 10/10 151 days 96.39 96%
jess c 10/10 151 days 96.39 96%
John Sivigny 10/10 181 days 94.81 95%
Maureen Clarke 10/10 181 days 94.81 95%
Stephen Hall 10/10 181 days 94.81 95%
Darryl Neo 10/10 304 days 85.36 85%
Harry Newton 10/10 304 days 85.36 85%
Brooke 10/10 304 days 85.36 85%
Felicia and Andy 10/10 334 days 82.32 82%
LB & Michael 10/10 334 days 82.32 82%
Päivi and John Anderson 8/10 334 days 78.21 78%
Matt Linton 10/10 365 days 78.89 79%
Sandy Curry 9/10 365 days 78.89 79%
Scott Browning 10/10 365 days 78.89 79%
Matthijs, Anouk en Mika Smit 10/10 365 days 78.89 79%
Maija Morgenweck 10/10 365 days 78.89 79%
JPliska 10/10 393 days 75.53 75%
Henry Meehan 10/10 393 days 75.53 75%
Zoran 10/10 393 days 75.53 75%
Svea Brömel 10/10 393 days 75.53 75%
Martin and Nikola 10/10 393 days 75.53 75%
John and Barbara 10/10 424 days 71.51 71%
Phillip Hartin 10/10 424 days 71.51 71%
Andrew Borch 10/10 424 days 71.51 71%
Niek and Anne (The Netherlands) 10/10 424 days 71.51 71%
Joash Picard 10/10 455 days 67.19 67%
Carrie 10/10 455 days 67.19 67%
Zoe 10/10 455 days 67.19 67%
Kara & Joash 10/10 455 days 67.19 67%
Marian van Voorn 9/10 455 days 67.19 67%
Amandine 10/10 455 days 67.19 67%
David Aylmore 9/10 485 days 62.73 62%
Saliha Hamici 10/10 485 days 62.73 62%
Sebastian Torfs 10/10 485 days 62.73 62%
Lochoe Mckinnon 10/10 516 days 57.81 57%
Eric 10/10 516 days 57.81 57%
Mia Tranthem 10/10 516 days 57.81 57%
kael Matthews 10/10 516 days 57.81 57%
Sophie Skinner 10/10 516 days 57.81 57%
Eddie 10/10 669 days 33.76 33%
hazel woodhead 10/10 669 days 33.76 33%
Tom Smithwick 10/10 699 days 29.85 29%
Matt 10/10 699 days 29.85 29%
John Sivigny 10/10 699 days 29.85 29%
Lizzie Watts 10/10 699 days 29.85 29%
Jonathan Clay 10/10 730 days 26.11 25%
Marita O'Brien 10/10 730 days 26.11 25%
Jan 9/10 730 days 26.11 25%
Henry 10/10 730 days 26.11 25%
Andy Barlow 10/10 758 days 23.0 22%
kath combes 10/10 758 days 23.0 22%
Roz Lobo 10/10 758 days 23.0 22%
Jorg 10/10 758 days 23.0 22%
Georgia 10/10 758 days 23.0 22%
Joss, Georgia and Stef 10/10 758 days 23.0 22%
petra 10/10 789 days 19.84 19%
Richard Janes 10/10 789 days 19.84 19%
Kristel & Tim 10/10 789 days 19.84 19%
Felix Maliers 10/10 789 days 19.84 19%
Greg and Syd 9/10 820 days 16.98 16%
Rebecca Grace 10/10 820 days 16.98 16%
Julia 9/10 820 days 16.98 16%
Jonas Himpe 10/10 850 days 14.51 14%
kohn stephan 10/10 850 days 14.51 14%
Tim Leary 10/10 850 days 14.51 14%
Tom Coul 10/10 850 days 14.51 14%
Kim Verplancke 10/10 850 days 14.51 14%
Chris Scrimshaw 10/10 850 days 14.51 14%
Martina & Trev from Switzerland 10/10 850 days 14.51 14%
Wendy and Vincent 10/10 881 days 12.26 11%
James N 10/10 973 days 7.36 6%
Gert van der Lugt 10/10 1095 days 5.0 4%
Stefan Giese 10/10 1095 days 5.0 4%
Hendrik Pschichholtz 10/10 1095 days 5.0 4%
Ray Verbeek 10/10 1095 days 5.0 4%
Andreas Herzog 10/10 1123 days 4.95 4%
Tracy Frauzel 10/10 1131 days true 4.93 4%
michel labrecque 10/10 1154 days 4.88 4%
Garrett South 10/10 1154 days 4.88 4%
Sofia Vadman 10/10 1154 days 4.88 4%
Patricia Pharr-Snyder 10/10 1215 days 4.77 4%
Gabriel Wappler 10/10 1429 days 4.35 3%
Phillip M 10/10 1460 days 4.29 3%
Sarah Considine 10/10 1460 days 4.29 3%
Jack + Jade Hughes 10/10 1460 days 4.29 3%
Gerry Fijal 10/10 1460 days 4.29 3%
Melanie Keller 10/10 1460 days 4.29 3%
Jasper S 10/10 1489 days 4.23 3%
Linc 9/10 1520 days 4.17 3%
Rose Gutekunst 10/10 1520 days 4.17 3%
Marcel Janser 10/10 1520 days 4.17 3%
Vicki Janes 10/10 1551 days 4.11 3%
Ky Phillips 10/10 1612 days 3.99 3%
Taylor Wirth 10/10 1642 days 3.93 3%
Emma Gaylord 10/10 1642 days 3.93 3%
Jean Capron 10/10 1795 days 3.63 3%
Barbara 10/10 1795 days 3.63 3%
Jan Menzies 10/10 1795 days 3.63 3%
Jenny Mulholland 10/10 1826 days 3.57 3%
Charles norris 10/10 1826 days 3.57 3%
Lee & Sarah . 10/10 1826 days 3.57 3%
Abi Fielder 10/10 1854 days 3.51 3%
janny van der Burg 10/10 1854 days 3.51 3%
HANNAH BROOKSBANK 10/10 1854 days 3.51 3%
Simon Betschart 10/10 1854 days 3.51 3%
Yannick 10/10 1885 days 3.45 2%
MikeHoncho 10/10 1885 days 3.45 2%
Dave Ruijter 10/10 1885 days 3.45 2%
Alison Gemrany 10/10 1885 days 3.45 2%
AndyDavies 10/10 1916 days 3.39 2%
Priscilla 10/10 1946 days 3.33 2%
Sarah Jones 10/10 1946 days 3.33 2%
Erwin & Dani Matijsen 10/10 1946 days 3.33 2%
Alanna Y 10/10 1946 days 3.33 2%
Sal Hubert 10/10 1976 days true 3.28 2%
Mia & Martin 10/10 1977 days 3.27 2%
Adam Miller 10/10 2007 days 3.22 2%
Joe Kuchman 10/10 2130 days 2.97 2%
Ryan & Rita Pierce 10/10 2160 days 2.92 2%
Janet Mook 9/10 2191 days 2.86 2%
Andy/Robyn Long 10/10 2191 days 2.86 2%
Jon Jamie 10/10 2191 days 2.86 2%
Erica Bradford 10/10 2219 days 2.8 2%
Paulo Dias 10/10 2219 days 2.8 2%
Jana Zanetto 10/10 2219 days 2.8 2%
David Haines-Hanham 10/10 2225 days true 2.79 2%
Sally Haines 10/10 2225 days true 2.79 2%
Katie 10/10 2250 days 2.74 2%
Stefanie Summer 10/10 2250 days 2.74 2%
seb_lag 9/10 2250 days 2.74 2%
Geo 10/10 2250 days 2.74 2%
Ineke & Wouter 8/10 2250 days 2.6 2%
sally haines-hanham 10/10 2250 days 2.74 2%
Marc Greeve 10/10 2258 days true 2.72 2%
Paul Eaves 10/10 2311 days 2.62 2%
Anna Barber 9/10 2311 days 2.62 2%
Adam 10/10 2342 days 2.56 2%
Rob & Margot 10/10 2372 days 2.5 2%
Vikki reeves 10/10 2372 days 2.5 2%
Gerard McAuley 10/10 2372 days 2.5 2%
Stephanie 10/10 2376 days true 2.49 2%
Ben Z 10/10 2525 days 2.2 1%
GLD 10/10 2556 days 2.14 1%
Colin Bond 10/10 2556 days 2.14 1%
HandH 10/10 2556 days 2.14 1%
Chris Ledwig 10/10 2556 days 2.14 1%
joepolog40 10/10 2556 days 2.14 1%
titougreg29 10/10 2584 days 2.09 1%
Brian 10/10 2584 days 2.09 1%
Wibo de Vries 10/10 2584 days 2.09 1%
Katie&Mike U 10/10 2584 days 2.09 1%
Peg Wooten 10/10 2615 days 2.03 1%
Marc Hoskins 10/10 2615 days 2.03 1%
Velvette 10/10 2615 days 2.03 1%
Stephanie Zellerer 10/10 2615 days 2.03 1%
Tina Gehmecker 10/10 2615 days 2.03 1%
paulcallanan 10/10 2615 days 2.03 1%
Tom Batty 10/10 2615 days 2.03 1%
Dave Worthington 10/10 2615 days 2.03 1%
Jodie Cronk 10/10 2615 days 2.03 1%
Jen&Digs M 10/10 2646 days 1.96 1%
Paul Leow 10/10 2646 days 1.96 1%
phnz 10/10 2646 days 1.96 1%
medellia371 10/10 2676 days 1.91 1%
Ihopkin 10/10 2676 days 1.91 1%
dan_robyn 10/10 2707 days 1.85 1%
erinlongtrail 10/10 2707 days 1.85 1%
sal 10/10 2737 days 1.79 1%
Horius 10/10 2737 days 1.79 1%
kayburns 9/10 2737 days 1.79 1%
Funkytiptoe 10/10 2737 days 1.79 1%
Christian Fell 10/10 2737 days 1.79 1%
aloedriscoll 10/10 2860 days 1.55 1%
h schmidt 10/10 2890 days 1.49 0%
jensmitty 10/10 2890 days 1.49 0%
aubreyfalk 10/10 2890 days 1.49 0%
WDC_Oxfam2012 10/10 2890 days 1.49 0%
doublesessions 9/10 2921 days 1.43 0%
tdean 10/10 2921 days 1.43 0%
Ewan 10/10 2921 days 1.43 0%
StefanKatie 10/10 2950 days 1.37 0%
François 10/10 2981 days 1.31 0%
essy 10/10 3012 days 1.25 0%
Bkeeping 10/10 3012 days 1.25 0%
mandaroni 10/10 3042 days 1.19 0%
cioffil 10/10 3073 days 1.13 0%
jackmason 10/10 3073 days 1.13 0%
greanman 10/10 3073 days 1.13 0%
jimmynew7121 10/10 3103 days 1.07 0%
lmharwood 10/10 3134 days 1.01 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 PiwiWiwi Campervans experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-0.02% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the PiwiWiwi Campervans 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 PiwiWiwi Campervans experience has been adjusted for 1 day. Adjustments are according to the following table.

Days Adjustment
0 -0.00%
1 -0.02%
2 -0.04%
3 -0.06%
4 -0.08%

Final Ranking Score

99%

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.