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

198 Valid Reviews

The PiwiWiwi Campervans experience has a total of 203 reviews. There are 198 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 198 valid reviews:

Rating Count Percentage
10/10 184
93%
9/10 12
6%
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%

99.19% Average

The raw data average (mean) for all the PiwiWiwi Campervans valid reviews is 99.19% and is based on 198 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 198 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

99.04%

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
Katherine Paschall 10/10 44 days 99.69 100%
Sandra 10/10 45 days 99.68 100%
Rebecca Sutherland 10/10 45 days 99.68 100%
Olga and Evan Patronik 10/10 45 days 99.68 100%
Sophie Van Tol 10/10 75 days 99.11 99%
Maire Peate 10/10 76 days 99.08 99%
Avalon Ridler 10/10 76 days 99.08 99%
Sarah 10/10 76 days 99.08 99%
Jonneke van de Kamp 10/10 76 days 99.08 99%
jess c 10/10 76 days 99.08 99%
John Sivigny 10/10 105 days 98.25 99%
Maureen Clarke 10/10 105 days 98.25 99%
Stephen Hall 10/10 105 days 98.25 99%
Darryl Neo 10/10 228 days 91.76 92%
Harry Newton 10/10 228 days 91.76 92%
Brooke 10/10 228 days 91.76 92%
Felicia and Andy 10/10 259 days 89.37 90%
LB & Michael 10/10 259 days 89.37 90%
Päivi and John Anderson 8/10 259 days 84.9 85%
Matt Linton 10/10 290 days 86.67 87%
Sandy Curry 9/10 290 days 86.67 87%
Scott Browning 10/10 290 days 86.67 87%
Matthijs, Anouk en Mika Smit 10/10 290 days 86.67 87%
Maija Morgenweck 10/10 290 days 86.67 87%
JPliska 10/10 318 days 83.98 84%
Henry Meehan 10/10 318 days 83.98 84%
Zoran 10/10 318 days 83.98 84%
Svea Brömel 10/10 318 days 83.98 84%
Martin and Nikola 10/10 318 days 83.98 84%
John and Barbara 10/10 349 days 80.7 81%
Phillip Hartin 10/10 349 days 80.7 81%
Andrew Borch 10/10 349 days 80.7 81%
Niek and Anne (The Netherlands) 10/10 349 days 80.7 81%
Joash Picard 10/10 379 days 77.24 77%
Carrie 10/10 380 days 77.12 77%
Zoe 10/10 380 days 77.12 77%
Kara & Joash 10/10 380 days 77.12 77%
Marian van Voorn 9/10 380 days 77.12 77%
Amandine 10/10 380 days 77.12 77%
David Aylmore 9/10 409 days 73.49 73%
Saliha Hamici 10/10 410 days 73.36 73%
Sebastian Torfs 10/10 410 days 73.36 73%
Lochoe Mckinnon 10/10 440 days 69.32 69%
Eric 10/10 441 days 69.18 69%
Mia Tranthem 10/10 441 days 69.18 69%
kael Matthews 10/10 441 days 69.18 69%
Sophie Skinner 10/10 441 days 69.18 69%
Eddie 10/10 593 days 44.93 44%
hazel woodhead 10/10 593 days 44.93 44%
Tom Smithwick 10/10 623 days 40.3 40%
Matt 10/10 624 days 40.15 40%
John Sivigny 10/10 624 days 40.15 40%
Lizzie Watts 10/10 624 days 40.15 40%
Jonathan Clay 10/10 655 days 35.68 35%
Marita O'Brien 10/10 655 days 35.68 35%
Jan 9/10 655 days 35.68 35%
Henry 10/10 655 days 35.68 35%
Andy Barlow 10/10 683 days 31.9 31%
kath combes 10/10 683 days 31.9 31%
Roz Lobo 10/10 683 days 31.9 31%
Jorg 10/10 683 days 31.9 31%
Georgia 10/10 683 days 31.9 31%
Joss, Georgia and Stef 10/10 683 days 31.9 31%
petra 10/10 713 days 28.12 27%
Richard Janes 10/10 713 days 28.12 27%
Kristel & Tim 10/10 713 days 28.12 27%
Felix Maliers 10/10 714 days 28.0 27%
Greg and Syd 9/10 744 days 24.52 24%
Rebecca Grace 10/10 744 days 24.52 24%
Julia 9/10 745 days 24.41 24%
Jonas Himpe 10/10 774 days 21.33 20%
kohn stephan 10/10 774 days 21.33 20%
Tim Leary 10/10 774 days 21.33 20%
Tom Coul 10/10 774 days 21.33 20%
Kim Verplancke 10/10 774 days 21.33 20%
Chris Scrimshaw 10/10 774 days 21.33 20%
Martina & Trev from Switzerland 10/10 775 days 21.23 20%
Wendy and Vincent 10/10 805 days 18.33 17%
James N 10/10 897 days 11.21 10%
Gert van der Lugt 10/10 1019 days 5.92 5%
Stefan Giese 10/10 1019 days 5.92 5%
Hendrik Pschichholtz 10/10 1019 days 5.92 5%
Ray Verbeek 10/10 1019 days 5.92 5%
Andreas Herzog 10/10 1047 days 5.37 4%
Tracy Frauzel 10/10 1056 days true 5.24 4%
michel labrecque 10/10 1078 days 5.05 4%
Garrett South 10/10 1078 days 5.05 4%
Sofia Vadman 10/10 1078 days 5.05 4%
Patricia Pharr-Snyder 10/10 1139 days 4.91 4%
Gabriel Wappler 10/10 1353 days 4.5 3%
Phillip M 10/10 1384 days 4.43 3%
Sarah Considine 10/10 1384 days 4.43 3%
Jack + Jade Hughes 10/10 1384 days 4.43 3%
Gerry Fijal 10/10 1384 days 4.43 3%
Melanie Keller 10/10 1384 days 4.43 3%
Jasper S 10/10 1413 days 4.38 3%
Linc 9/10 1444 days 4.32 3%
Rose Gutekunst 10/10 1444 days 4.32 3%
Marcel Janser 10/10 1444 days 4.32 3%
Vicki Janes 10/10 1475 days 4.26 3%
Ky Phillips 10/10 1537 days 4.14 3%
Taylor Wirth 10/10 1566 days 4.08 3%
Emma Gaylord 10/10 1566 days 4.08 3%
Jean Capron 10/10 1719 days 3.78 3%
Barbara 10/10 1719 days 3.78 3%
Jan Menzies 10/10 1719 days 3.78 3%
Jenny Mulholland 10/10 1750 days 3.72 3%
Charles norris 10/10 1750 days 3.72 3%
Lee & Sarah . 10/10 1750 days 3.72 3%
Abi Fielder 10/10 1778 days 3.66 3%
janny van der Burg 10/10 1778 days 3.66 3%
HANNAH BROOKSBANK 10/10 1778 days 3.66 3%
Simon Betschart 10/10 1778 days 3.66 3%
Yannick 10/10 1809 days 3.6 2%
MikeHoncho 10/10 1809 days 3.6 2%
Dave Ruijter 10/10 1809 days 3.6 2%
Alison Gemrany 10/10 1809 days 3.6 2%
AndyDavies 10/10 1840 days 3.54 2%
Priscilla 10/10 1870 days 3.48 2%
Sarah Jones 10/10 1870 days 3.48 2%
Erwin & Dani Matijsen 10/10 1870 days 3.48 2%
Alanna Y 10/10 1870 days 3.48 2%
Sal Hubert 10/10 1901 days true 3.42 2%
Mia & Martin 10/10 1901 days 3.42 2%
Adam Miller 10/10 1931 days 3.36 2%
Joe Kuchman 10/10 2054 days 3.12 2%
Ryan & Rita Pierce 10/10 2085 days 3.06 2%
Janet Mook 9/10 2116 days 3.0 2%
Andy/Robyn Long 10/10 2116 days 3.0 2%
Jon Jamie 10/10 2116 days 3.0 2%
Erica Bradford 10/10 2144 days 2.95 2%
Paulo Dias 10/10 2144 days 2.95 2%
Jana Zanetto 10/10 2144 days 2.95 2%
David Haines-Hanham 10/10 2150 days true 2.94 2%
Sally Haines 10/10 2150 days true 2.94 2%
Katie 10/10 2175 days 2.89 2%
Stefanie Summer 10/10 2175 days 2.89 2%
seb_lag 9/10 2175 days 2.89 2%
Geo 10/10 2175 days 2.89 2%
Ineke & Wouter 8/10 2175 days 2.74 2%
sally haines-hanham 10/10 2175 days 2.89 2%
Marc Greeve 10/10 2183 days true 2.87 2%
Paul Eaves 10/10 2236 days 2.77 2%
Anna Barber 9/10 2236 days 2.77 2%
Adam 10/10 2267 days 2.71 2%
Rob & Margot 10/10 2296 days 2.65 2%
Vikki reeves 10/10 2296 days 2.65 2%
Gerard McAuley 10/10 2296 days 2.65 2%
Stephanie 10/10 2300 days true 2.64 2%
Ben Z 10/10 2450 days 2.35 1%
GLD 10/10 2481 days 2.29 1%
Colin Bond 10/10 2481 days 2.29 1%
HandH 10/10 2481 days 2.29 1%
Chris Ledwig 10/10 2481 days 2.29 1%
joepolog40 10/10 2481 days 2.29 1%
titougreg29 10/10 2509 days 2.23 1%
Brian 10/10 2509 days 2.23 1%
Wibo de Vries 10/10 2509 days 2.23 1%
Katie&Mike U 10/10 2509 days 2.23 1%
Peg Wooten 10/10 2540 days 2.17 1%
Marc Hoskins 10/10 2540 days 2.17 1%
Velvette 10/10 2540 days 2.17 1%
Stephanie Zellerer 10/10 2540 days 2.17 1%
Tina Gehmecker 10/10 2540 days 2.17 1%
paulcallanan 10/10 2540 days 2.17 1%
Tom Batty 10/10 2540 days 2.17 1%
Dave Worthington 10/10 2540 days 2.17 1%
Jodie Cronk 10/10 2540 days 2.17 1%
Jen&Digs M 10/10 2571 days 2.11 1%
Paul Leow 10/10 2571 days 2.11 1%
phnz 10/10 2571 days 2.11 1%
medellia371 10/10 2601 days 2.05 1%
Ihopkin 10/10 2601 days 2.05 1%
dan_robyn 10/10 2632 days 1.99 1%
erinlongtrail 10/10 2632 days 1.99 1%
sal 10/10 2661 days 1.94 1%
Horius 10/10 2661 days 1.94 1%
kayburns 9/10 2661 days 1.94 1%
Funkytiptoe 10/10 2661 days 1.94 1%
Christian Fell 10/10 2661 days 1.94 1%
aloedriscoll 10/10 2784 days 1.69 1%
h schmidt 10/10 2815 days 1.63 0%
jensmitty 10/10 2815 days 1.63 0%
aubreyfalk 10/10 2815 days 1.63 0%
WDC_Oxfam2012 10/10 2815 days 1.63 0%
doublesessions 9/10 2846 days 1.57 0%
tdean 10/10 2846 days 1.57 0%
Ewan 10/10 2846 days 1.57 0%
StefanKatie 10/10 2875 days 1.52 0%
François 10/10 2906 days 1.46 0%
essy 10/10 2937 days 1.4 0%
Bkeeping 10/10 2937 days 1.4 0%
mandaroni 10/10 2967 days 1.34 0%
cioffil 10/10 2998 days 1.28 0%
jackmason 10/10 2998 days 1.28 0%
greanman 10/10 2998 days 1.28 0%
jimmynew7121 10/10 3027 days 1.22 0%
lmharwood 10/10 3058 days 1.16 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.