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

181 Valid Reviews

The PiwiWiwi Campervans experience has a total of 186 reviews. There are 181 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 181 valid reviews:

Rating Count Percentage
10/10 168
93%
9/10 12
7%
8/10 1
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%

99.23% Average

The raw data average (mean) for all the PiwiWiwi Campervans valid reviews is 99.23% and is based on 181 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 181 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

99.08%

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
Darryl Neo 10/10 22 days 99.92 100%
Felicia and Andy 10/10 52 days 99.57 100%
LB & Michael 10/10 52 days 99.57 100%
Matt Linton 10/10 83 days 98.91 99%
Sandy Curry 9/10 83 days 98.91 99%
Scott Browning 10/10 83 days 98.91 99%
Matthijs, Anouk en Mika Smit 10/10 83 days 98.91 99%
JPliska 10/10 111 days 98.05 98%
Henry Meehan 10/10 111 days 98.05 98%
Zoran 10/10 111 days 98.05 98%
Svea Brömel 10/10 111 days 98.05 98%
Martin and Nikola 10/10 111 days 98.05 98%
John and Barbara 10/10 142 days 96.8 97%
Phillip Hartin 10/10 142 days 96.8 97%
Andrew Borch 10/10 142 days 96.8 97%
Niek and Anne (The Netherlands) 10/10 142 days 96.8 97%
Joash Picard 10/10 173 days 95.26 95%
Carrie 10/10 173 days 95.26 95%
Zoe 10/10 173 days 95.26 95%
Kara & Joash 10/10 173 days 95.26 95%
Marian van Voorn 9/10 173 days 95.26 95%
Amandine 10/10 173 days 95.26 95%
David Aylmore 9/10 203 days 93.47 93%
Saliha Hamici 10/10 203 days 93.47 93%
Sebastian Torfs 10/10 203 days 93.47 93%
Lochoe Mckinnon 10/10 234 days 91.32 91%
Eric 10/10 234 days 91.32 91%
Mia Tranthem 10/10 234 days 91.32 91%
kael Matthews 10/10 234 days 91.32 91%
Sophie Skinner 10/10 234 days 91.32 91%
Eddie 10/10 387 days 76.27 76%
hazel woodhead 10/10 387 days 76.27 76%
Tom Smithwick 10/10 417 days 72.45 72%
Matt 10/10 417 days 72.45 72%
John Sivigny 10/10 417 days 72.45 72%
Lizzie Watts 10/10 417 days 72.45 72%
Jonathan Clay 10/10 448 days 68.2 67%
Marita O'Brien 10/10 448 days 68.2 67%
Jan 9/10 448 days 68.2 67%
Henry 10/10 448 days 68.2 67%
Andy Barlow 10/10 476 days 64.1 63%
kath combes 10/10 476 days 64.1 63%
Roz Lobo 10/10 476 days 64.1 63%
Jorg 10/10 476 days 64.1 63%
Georgia 10/10 476 days 64.1 63%
Joss, Georgia and Stef 10/10 476 days 64.1 63%
petra 10/10 507 days 59.27 58%
Richard Janes 10/10 507 days 59.27 58%
Kristel & Tim 10/10 507 days 59.27 58%
Felix Maliers 10/10 507 days 59.27 58%
Greg and Syd 9/10 538 days 54.13 53%
Rebecca Grace 10/10 538 days 54.13 53%
Julia 9/10 538 days 54.13 53%
Jonas Himpe 10/10 568 days 49.01 48%
kohn stephan 10/10 568 days 49.01 48%
Tim Leary 10/10 568 days 49.01 48%
Tom Coul 10/10 568 days 49.01 48%
Kim Verplancke 10/10 568 days 49.01 48%
Chris Scrimshaw 10/10 568 days 49.01 48%
Martina & Trev from Switzerland 10/10 568 days 49.01 48%
Wendy and Vincent 10/10 599 days 43.98 43%
James N 10/10 691 days 30.86 29%
Gert van der Lugt 10/10 813 days 17.6 15%
Stefan Giese 10/10 813 days 17.6 15%
Hendrik Pschichholtz 10/10 813 days 17.6 15%
Ray Verbeek 10/10 813 days 17.6 15%
Andreas Herzog 10/10 841 days 15.22 13%
Tracy Frauzel 10/10 849 days true 17.51 15%
michel labrecque 10/10 872 days 12.88 11%
Garrett South 10/10 872 days 12.88 11%
Sofia Vadman 10/10 872 days 12.88 11%
Patricia Pharr-Snyder 10/10 933 days 9.16 7%
Gabriel Wappler 10/10 1147 days 4.93 2%
Phillip M 10/10 1178 days 4.89 2%
Sarah Considine 10/10 1178 days 4.89 2%
Jack + Jade Hughes 10/10 1178 days 4.89 2%
Gerry Fijal 10/10 1178 days 4.89 2%
Melanie Keller 10/10 1178 days 4.89 2%
Jasper S 10/10 1207 days 4.85 2%
Linc 9/10 1238 days 4.8 2%
Rose Gutekunst 10/10 1238 days 4.8 2%
Marcel Janser 10/10 1238 days 4.8 2%
Vicki Janes 10/10 1269 days 4.76 2%
Ky Phillips 10/10 1330 days 4.68 2%
Taylor Wirth 10/10 1360 days 4.64 2%
Emma Gaylord 10/10 1360 days 4.64 2%
Jean Capron 10/10 1513 days 4.43 2%
Barbara 10/10 1513 days 4.43 2%
Jan Menzies 10/10 1513 days 4.43 2%
Jenny Mulholland 10/10 1544 days 4.38 2%
Charles norris 10/10 1544 days 4.38 2%
Lee & Sarah . 10/10 1544 days 4.38 2%
Abi Fielder 10/10 1572 days 4.35 2%
janny van der Burg 10/10 1572 days 4.35 2%
HANNAH BROOKSBANK 10/10 1572 days 4.35 2%
Simon Betschart 10/10 1572 days 4.35 2%
Yannick 10/10 1603 days 4.3 2%
MikeHoncho 10/10 1603 days 4.3 2%
Dave Ruijter 10/10 1603 days 4.3 2%
Alison Gemrany 10/10 1603 days 4.3 2%
AndyDavies 10/10 1634 days 4.26 2%
Priscilla 10/10 1664 days 4.22 2%
Sarah Jones 10/10 1664 days 4.22 2%
Erwin & Dani Matijsen 10/10 1664 days 4.22 2%
Alanna Y 10/10 1664 days 4.22 2%
Sal Hubert 10/10 1694 days true 5.02 2%
Mia & Martin 10/10 1695 days 4.18 2%
Adam Miller 10/10 1725 days 4.14 2%
Joe Kuchman 10/10 1848 days 3.97 1%
Ryan & Rita Pierce 10/10 1878 days 3.93 1%
Janet Mook 9/10 1909 days 3.88 1%
Andy/Robyn Long 10/10 1909 days 3.88 1%
Jon Jamie 10/10 1909 days 3.88 1%
Erica Bradford 10/10 1937 days 3.85 1%
Paulo Dias 10/10 1937 days 3.85 1%
Jana Zanetto 10/10 1937 days 3.85 1%
David Haines-Hanham 10/10 1943 days true 4.61 2%
Sally Haines 10/10 1943 days true 4.61 2%
Katie 10/10 1968 days 3.8 1%
Stefanie Summer 10/10 1968 days 3.8 1%
seb_lag 9/10 1968 days 3.8 1%
Geo 10/10 1968 days 3.8 1%
Ineke & Wouter 8/10 1968 days 3.8 1%
sally haines-hanham 10/10 1968 days 3.8 1%
Marc Greeve 10/10 1976 days true 4.55 2%
Paul Eaves 10/10 2029 days 3.72 1%
Anna Barber 9/10 2029 days 3.72 1%
Adam 10/10 2060 days 3.68 1%
Rob & Margot 10/10 2090 days 3.64 1%
Vikki reeves 10/10 2090 days 3.64 1%
Gerard McAuley 10/10 2090 days 3.64 1%
Stephanie 10/10 2094 days true 4.36 2%
Ben Z 10/10 2243 days 3.43 1%
GLD 10/10 2274 days 3.38 1%
Colin Bond 10/10 2274 days 3.38 1%
HandH 10/10 2274 days 3.38 1%
Chris Ledwig 10/10 2274 days 3.38 1%
joepolog40 10/10 2274 days 3.38 1%
titougreg29 10/10 2302 days 3.35 1%
Brian 10/10 2302 days 3.35 1%
Wibo de Vries 10/10 2302 days 3.35 1%
Katie&Mike U 10/10 2302 days 3.35 1%
Peg Wooten 10/10 2333 days 3.3 1%
Marc Hoskins 10/10 2333 days 3.3 1%
Velvette 10/10 2333 days 3.3 1%
Stephanie Zellerer 10/10 2333 days 3.3 1%
Tina Gehmecker 10/10 2333 days 3.3 1%
paulcallanan 10/10 2333 days 3.3 1%
Tom Batty 10/10 2333 days 3.3 1%
Dave Worthington 10/10 2333 days 3.3 1%
Jodie Cronk 10/10 2333 days 3.3 1%
Jen&Digs M 10/10 2364 days 3.26 1%
Paul Leow 10/10 2364 days 3.26 1%
phnz 10/10 2364 days 3.26 1%
medellia371 10/10 2394 days 3.22 1%
Ihopkin 10/10 2394 days 3.22 1%
dan_robyn 10/10 2425 days 3.18 1%
erinlongtrail 10/10 2425 days 3.18 1%
sal 10/10 2455 days 3.14 1%
Horius 10/10 2455 days 3.14 1%
kayburns 9/10 2455 days 3.14 1%
Funkytiptoe 10/10 2455 days 3.14 1%
Christian Fell 10/10 2455 days 3.14 1%
aloedriscoll 10/10 2578 days 2.97 0%
h schmidt 10/10 2608 days 2.93 0%
jensmitty 10/10 2608 days 2.93 0%
aubreyfalk 10/10 2608 days 2.93 0%
WDC_Oxfam2012 10/10 2608 days 2.93 0%
doublesessions 9/10 2639 days 2.88 0%
tdean 10/10 2639 days 2.88 0%
Ewan 10/10 2639 days 2.88 0%
StefanKatie 10/10 2668 days 2.85 0%
François 10/10 2699 days 2.8 0%
essy 10/10 2730 days 2.76 0%
Bkeeping 10/10 2730 days 2.76 0%
mandaroni 10/10 2760 days 2.72 0%
cioffil 10/10 2791 days 2.68 0%
jackmason 10/10 2791 days 2.68 0%
greanman 10/10 2791 days 2.68 0%
jimmynew7121 10/10 2821 days 2.64 0%
lmharwood 10/10 2852 days 2.59 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

-0.04% 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 364 days.

The PiwiWiwi Campervans experience has been adjusted for 2 days. Adjustments are according to the following table.

Days Adjustment
0 -0.00%
1 -0.02%
2 -0.04%
3 -0.06%
4 -0.08%
5 -0.10%

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.

Love Christchurch