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

185 Valid Reviews

The PiwiWiwi Campervans experience has a total of 190 reviews. There are 185 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 185 valid reviews:

Rating Count Percentage
10/10 171
92%
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%

99.14% Average

The raw data average (mean) for all the PiwiWiwi Campervans valid reviews is 99.14% and is based on 185 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 185 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

98.78%

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 10/10 109 days 98.12 100%
Harry Newton 10/10 109 days 98.12 100%
Brooke 10/10 109 days 98.12 100%
Felicia and Andy 10/10 139 days 96.94 99%
LB & Michael 10/10 139 days 96.94 99%
Päivi and John Anderson 8/10 139 days 92.09 94%
Matt Linton 10/10 170 days 95.42 97%
Sandy Curry 9/10 170 days 95.42 97%
Scott Browning 10/10 170 days 95.42 97%
Matthijs, Anouk en Mika Smit 10/10 170 days 95.42 97%
Maija Morgenweck 10/10 170 days 95.42 97%
JPliska 10/10 198 days 93.79 95%
Henry Meehan 10/10 198 days 93.79 95%
Zoran 10/10 198 days 93.79 95%
Svea Brömel 10/10 198 days 93.79 95%
Martin and Nikola 10/10 198 days 93.79 95%
John and Barbara 10/10 229 days 91.69 93%
Phillip Hartin 10/10 229 days 91.69 93%
Andrew Borch 10/10 229 days 91.69 93%
Niek and Anne (The Netherlands) 10/10 229 days 91.69 93%
Joash Picard 10/10 260 days 89.29 91%
Carrie 10/10 260 days 89.29 91%
Zoe 10/10 260 days 89.29 91%
Kara & Joash 10/10 260 days 89.29 91%
Marian van Voorn 9/10 260 days 89.29 91%
Amandine 10/10 260 days 89.29 91%
David Aylmore 9/10 290 days 86.67 88%
Saliha Hamici 10/10 290 days 86.67 88%
Sebastian Torfs 10/10 290 days 86.67 88%
Lochoe Mckinnon 10/10 321 days 83.67 85%
Eric 10/10 321 days 83.67 85%
Mia Tranthem 10/10 321 days 83.67 85%
kael Matthews 10/10 321 days 83.67 85%
Sophie Skinner 10/10 321 days 83.67 85%
Eddie 10/10 474 days 64.4 65%
hazel woodhead 10/10 474 days 64.4 65%
Tom Smithwick 10/10 504 days 59.75 60%
Matt 10/10 504 days 59.75 60%
John Sivigny 10/10 504 days 59.75 60%
Lizzie Watts 10/10 504 days 59.75 60%
Jonathan Clay 10/10 535 days 54.64 55%
Marita O'Brien 10/10 535 days 54.64 55%
Jan 9/10 535 days 54.64 55%
Henry 10/10 535 days 54.64 55%
Andy Barlow 10/10 563 days 49.85 50%
kath combes 10/10 563 days 49.85 50%
Roz Lobo 10/10 563 days 49.85 50%
Jorg 10/10 563 days 49.85 50%
Georgia 10/10 563 days 49.85 50%
Joss, Georgia and Stef 10/10 563 days 49.85 50%
petra 10/10 594 days 44.77 44%
Richard Janes 10/10 594 days 44.77 44%
Kristel & Tim 10/10 594 days 44.77 44%
Felix Maliers 10/10 594 days 44.77 44%
Greg and Syd 9/10 625 days 40.0 39%
Rebecca Grace 10/10 625 days 40.0 39%
Julia 9/10 625 days 40.0 39%
Jonas Himpe 10/10 655 days 35.68 35%
kohn stephan 10/10 655 days 35.68 35%
Tim Leary 10/10 655 days 35.68 35%
Tom Coul 10/10 655 days 35.68 35%
Kim Verplancke 10/10 655 days 35.68 35%
Chris Scrimshaw 10/10 655 days 35.68 35%
Martina & Trev from Switzerland 10/10 655 days 35.68 35%
Wendy and Vincent 10/10 686 days 31.51 31%
James N 10/10 778 days 20.92 20%
Gert van der Lugt 10/10 900 days 11.03 9%
Stefan Giese 10/10 900 days 11.03 9%
Hendrik Pschichholtz 10/10 900 days 11.03 9%
Ray Verbeek 10/10 900 days 11.03 9%
Andreas Herzog 10/10 928 days 9.42 8%
Tracy Frauzel 10/10 936 days true 9.01 7%
michel labrecque 10/10 959 days 7.93 6%
Garrett South 10/10 959 days 7.93 6%
Sofia Vadman 10/10 959 days 7.93 6%
Patricia Pharr-Snyder 10/10 1020 days 5.89 4%
Gabriel Wappler 10/10 1234 days 4.79 3%
Phillip M 10/10 1265 days 4.74 3%
Sarah Considine 10/10 1265 days 4.74 3%
Jack + Jade Hughes 10/10 1265 days 4.74 3%
Gerry Fijal 10/10 1265 days 4.74 3%
Melanie Keller 10/10 1265 days 4.74 3%
Jasper S 10/10 1294 days 4.7 3%
Linc 9/10 1325 days 4.65 3%
Rose Gutekunst 10/10 1325 days 4.65 3%
Marcel Janser 10/10 1325 days 4.65 3%
Vicki Janes 10/10 1356 days 4.6 3%
Ky Phillips 10/10 1417 days 4.51 2%
Taylor Wirth 10/10 1447 days 4.46 2%
Emma Gaylord 10/10 1447 days 4.46 2%
Jean Capron 10/10 1600 days 4.23 2%
Barbara 10/10 1600 days 4.23 2%
Jan Menzies 10/10 1600 days 4.23 2%
Jenny Mulholland 10/10 1631 days 4.18 2%
Charles norris 10/10 1631 days 4.18 2%
Lee & Sarah . 10/10 1631 days 4.18 2%
Abi Fielder 10/10 1659 days 4.14 2%
janny van der Burg 10/10 1659 days 4.14 2%
HANNAH BROOKSBANK 10/10 1659 days 4.14 2%
Simon Betschart 10/10 1659 days 4.14 2%
Yannick 10/10 1690 days 4.09 2%
MikeHoncho 10/10 1690 days 4.09 2%
Dave Ruijter 10/10 1690 days 4.09 2%
Alison Gemrany 10/10 1690 days 4.09 2%
AndyDavies 10/10 1721 days 4.05 2%
Priscilla 10/10 1751 days 4.0 2%
Sarah Jones 10/10 1751 days 4.0 2%
Erwin & Dani Matijsen 10/10 1751 days 4.0 2%
Alanna Y 10/10 1751 days 4.0 2%
Sal Hubert 10/10 1781 days true 3.96 2%
Mia & Martin 10/10 1782 days 3.95 2%
Adam Miller 10/10 1812 days 3.91 2%
Joe Kuchman 10/10 1935 days 3.72 2%
Ryan & Rita Pierce 10/10 1965 days 3.68 2%
Janet Mook 9/10 1996 days 3.63 1%
Andy/Robyn Long 10/10 1996 days 3.63 1%
Jon Jamie 10/10 1996 days 3.63 1%
Erica Bradford 10/10 2024 days 3.59 1%
Paulo Dias 10/10 2024 days 3.59 1%
Jana Zanetto 10/10 2024 days 3.59 1%
David Haines-Hanham 10/10 2030 days true 3.58 1%
Sally Haines 10/10 2030 days true 3.58 1%
Katie 10/10 2055 days 3.54 1%
Stefanie Summer 10/10 2055 days 3.54 1%
seb_lag 9/10 2055 days 3.54 1%
Geo 10/10 2055 days 3.54 1%
Ineke & Wouter 8/10 2055 days 3.36 1%
sally haines-hanham 10/10 2055 days 3.54 1%
Marc Greeve 10/10 2063 days true 3.53 1%
Paul Eaves 10/10 2116 days 3.45 1%
Anna Barber 9/10 2116 days 3.45 1%
Adam 10/10 2147 days 3.4 1%
Rob & Margot 10/10 2177 days 3.35 1%
Vikki reeves 10/10 2177 days 3.35 1%
Gerard McAuley 10/10 2177 days 3.35 1%
Stephanie 10/10 2181 days true 3.35 1%
Ben Z 10/10 2330 days 3.12 1%
GLD 10/10 2361 days 3.07 1%
Colin Bond 10/10 2361 days 3.07 1%
HandH 10/10 2361 days 3.07 1%
Chris Ledwig 10/10 2361 days 3.07 1%
joepolog40 10/10 2361 days 3.07 1%
titougreg29 10/10 2389 days 3.03 1%
Brian 10/10 2389 days 3.03 1%
Wibo de Vries 10/10 2389 days 3.03 1%
Katie&Mike U 10/10 2389 days 3.03 1%
Peg Wooten 10/10 2420 days 2.98 1%
Marc Hoskins 10/10 2420 days 2.98 1%
Velvette 10/10 2420 days 2.98 1%
Stephanie Zellerer 10/10 2420 days 2.98 1%
Tina Gehmecker 10/10 2420 days 2.98 1%
paulcallanan 10/10 2420 days 2.98 1%
Tom Batty 10/10 2420 days 2.98 1%
Dave Worthington 10/10 2420 days 2.98 1%
Jodie Cronk 10/10 2420 days 2.98 1%
Jen&Digs M 10/10 2451 days 2.94 1%
Paul Leow 10/10 2451 days 2.94 1%
phnz 10/10 2451 days 2.94 1%
medellia371 10/10 2481 days 2.89 1%
Ihopkin 10/10 2481 days 2.89 1%
dan_robyn 10/10 2512 days 2.84 1%
erinlongtrail 10/10 2512 days 2.84 1%
sal 10/10 2542 days 2.8 1%
Horius 10/10 2542 days 2.8 1%
kayburns 9/10 2542 days 2.8 1%
Funkytiptoe 10/10 2542 days 2.8 1%
Christian Fell 10/10 2542 days 2.8 1%
aloedriscoll 10/10 2665 days 2.61 0%
h schmidt 10/10 2695 days 2.56 0%
jensmitty 10/10 2695 days 2.56 0%
aubreyfalk 10/10 2695 days 2.56 0%
WDC_Oxfam2012 10/10 2695 days 2.56 0%
doublesessions 9/10 2726 days 2.52 0%
tdean 10/10 2726 days 2.52 0%
Ewan 10/10 2726 days 2.52 0%
StefanKatie 10/10 2755 days 2.47 0%
François 10/10 2786 days 2.43 0%
essy 10/10 2817 days 2.38 0%
Bkeeping 10/10 2817 days 2.38 0%
mandaroni 10/10 2847 days 2.33 0%
cioffil 10/10 2878 days 2.29 0%
jackmason 10/10 2878 days 2.29 0%
greanman 10/10 2878 days 2.29 0%
jimmynew7121 10/10 2908 days 2.24 0%
lmharwood 10/10 2939 days 2.19 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

-2.85% Adjustment

Recent reviews reflect the experience as it currently operates. This means it's important to get fresh reviews. Some experiences discovered they could get a few good reviews and then, resting on their laurels, discourage any further reviews. This adjustment stimulates experiences to be positively involved in the review generating process and discourages them from manipulating the ranking system in this manner. There may be an adjustment if an experience hasn't received any reviews within the last 60 days.

The PiwiWiwi Campervans experience has 2 recent rankings. Adjustments are according to the following table:

Recent Reviews Adjustment
0 -3.00%
1 -2.83%
2 -2.33%
3 -1.50%
4 -0.67%
5 -0.17%
6 -0.00%

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 26 days. Adjustments are according to the following table.

Days Adjustment
23 -0.46%
24 -0.48%
25 -0.50%
26 -0.52%
27 -0.54%
28 -0.56%
29 -0.58%

Final Ranking Score

96%

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.