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

187 Valid Reviews

The PiwiWiwi Campervans experience has a total of 192 reviews. There are 187 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 187 valid reviews:

Rating Count Percentage
10/10 173
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%

99.14% Average

The raw data average (mean) for all the PiwiWiwi Campervans valid reviews is 99.14% and is based on 187 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 187 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

98.81%

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
John Sivigny 10/10 45 days 99.68 100%
Maureen Clarke 10/10 45 days 99.68 100%
Darryl Neo 10/10 168 days 95.53 96%
Harry Newton 10/10 168 days 95.53 96%
Brooke 10/10 168 days 95.53 96%
Felicia and Andy 10/10 198 days 93.79 94%
LB & Michael 10/10 198 days 93.79 94%
Päivi and John Anderson 8/10 198 days 89.1 89%
Matt Linton 10/10 229 days 91.69 92%
Sandy Curry 9/10 229 days 91.69 92%
Scott Browning 10/10 229 days 91.69 92%
Matthijs, Anouk en Mika Smit 10/10 229 days 91.69 92%
Maija Morgenweck 10/10 229 days 91.69 92%
JPliska 10/10 257 days 89.53 90%
Henry Meehan 10/10 257 days 89.53 90%
Zoran 10/10 257 days 89.53 90%
Svea Brömel 10/10 257 days 89.53 90%
Martin and Nikola 10/10 257 days 89.53 90%
John and Barbara 10/10 288 days 86.86 87%
Phillip Hartin 10/10 288 days 86.86 87%
Andrew Borch 10/10 288 days 86.86 87%
Niek and Anne (The Netherlands) 10/10 288 days 86.86 87%
Joash Picard 10/10 318 days 83.98 84%
Carrie 10/10 319 days 83.87 84%
Zoe 10/10 319 days 83.87 84%
Kara & Joash 10/10 319 days 83.87 84%
Marian van Voorn 9/10 319 days 83.87 84%
Amandine 10/10 319 days 83.87 84%
David Aylmore 9/10 348 days 80.81 81%
Saliha Hamici 10/10 349 days 80.7 81%
Sebastian Torfs 10/10 349 days 80.7 81%
Lochoe Mckinnon 10/10 379 days 77.24 77%
Eric 10/10 380 days 77.12 77%
Mia Tranthem 10/10 380 days 77.12 77%
kael Matthews 10/10 380 days 77.12 77%
Sophie Skinner 10/10 380 days 77.12 77%
Eddie 10/10 533 days 54.98 54%
hazel woodhead 10/10 533 days 54.98 54%
Tom Smithwick 10/10 562 days 50.02 49%
Matt 10/10 563 days 49.85 49%
John Sivigny 10/10 563 days 49.85 49%
Lizzie Watts 10/10 563 days 49.85 49%
Jonathan Clay 10/10 594 days 44.77 44%
Marita O'Brien 10/10 594 days 44.77 44%
Jan 9/10 594 days 44.77 44%
Henry 10/10 594 days 44.77 44%
Andy Barlow 10/10 622 days 40.45 40%
kath combes 10/10 622 days 40.45 40%
Roz Lobo 10/10 622 days 40.45 40%
Jorg 10/10 622 days 40.45 40%
Georgia 10/10 622 days 40.45 40%
Joss, Georgia and Stef 10/10 622 days 40.45 40%
petra 10/10 652 days 36.1 35%
Richard Janes 10/10 652 days 36.1 35%
Kristel & Tim 10/10 652 days 36.1 35%
Felix Maliers 10/10 653 days 35.96 35%
Greg and Syd 9/10 683 days 31.9 31%
Rebecca Grace 10/10 683 days 31.9 31%
Julia 9/10 684 days 31.77 31%
Jonas Himpe 10/10 713 days 28.12 27%
kohn stephan 10/10 713 days 28.12 27%
Tim Leary 10/10 713 days 28.12 27%
Tom Coul 10/10 713 days 28.12 27%
Kim Verplancke 10/10 713 days 28.12 27%
Chris Scrimshaw 10/10 713 days 28.12 27%
Martina & Trev from Switzerland 10/10 714 days 28.0 27%
Wendy and Vincent 10/10 744 days 24.52 23%
James N 10/10 836 days 15.63 14%
Gert van der Lugt 10/10 958 days 7.97 6%
Stefan Giese 10/10 958 days 7.97 6%
Hendrik Pschichholtz 10/10 958 days 7.97 6%
Ray Verbeek 10/10 958 days 7.97 6%
Andreas Herzog 10/10 986 days 6.88 5%
Tracy Frauzel 10/10 995 days true 6.58 5%
michel labrecque 10/10 1017 days 5.96 4%
Garrett South 10/10 1017 days 5.96 4%
Sofia Vadman 10/10 1017 days 5.96 4%
Patricia Pharr-Snyder 10/10 1078 days 5.05 3%
Gabriel Wappler 10/10 1292 days 4.66 3%
Phillip M 10/10 1323 days 4.61 3%
Sarah Considine 10/10 1323 days 4.61 3%
Jack + Jade Hughes 10/10 1323 days 4.61 3%
Gerry Fijal 10/10 1323 days 4.61 3%
Melanie Keller 10/10 1323 days 4.61 3%
Jasper S 10/10 1352 days 4.56 3%
Linc 9/10 1383 days 4.51 3%
Rose Gutekunst 10/10 1383 days 4.51 3%
Marcel Janser 10/10 1383 days 4.51 3%
Vicki Janes 10/10 1414 days 4.45 3%
Ky Phillips 10/10 1476 days 4.35 3%
Taylor Wirth 10/10 1505 days 4.3 3%
Emma Gaylord 10/10 1505 days 4.3 3%
Jean Capron 10/10 1658 days 4.04 2%
Barbara 10/10 1658 days 4.04 2%
Jan Menzies 10/10 1658 days 4.04 2%
Jenny Mulholland 10/10 1689 days 3.98 2%
Charles norris 10/10 1689 days 3.98 2%
Lee & Sarah . 10/10 1689 days 3.98 2%
Abi Fielder 10/10 1717 days 3.93 2%
janny van der Burg 10/10 1717 days 3.93 2%
HANNAH BROOKSBANK 10/10 1717 days 3.93 2%
Simon Betschart 10/10 1717 days 3.93 2%
Yannick 10/10 1748 days 3.88 2%
MikeHoncho 10/10 1748 days 3.88 2%
Dave Ruijter 10/10 1748 days 3.88 2%
Alison Gemrany 10/10 1748 days 3.88 2%
AndyDavies 10/10 1779 days 3.83 2%
Priscilla 10/10 1809 days 3.78 2%
Sarah Jones 10/10 1809 days 3.78 2%
Erwin & Dani Matijsen 10/10 1809 days 3.78 2%
Alanna Y 10/10 1809 days 3.78 2%
Sal Hubert 10/10 1840 days true 3.72 2%
Mia & Martin 10/10 1840 days 3.72 2%
Adam Miller 10/10 1870 days 3.67 2%
Joe Kuchman 10/10 1994 days 3.46 2%
Ryan & Rita Pierce 10/10 2024 days 3.41 2%
Janet Mook 9/10 2055 days 3.36 2%
Andy/Robyn Long 10/10 2055 days 3.36 2%
Jon Jamie 10/10 2055 days 3.36 2%
Erica Bradford 10/10 2083 days 3.31 2%
Paulo Dias 10/10 2083 days 3.31 2%
Jana Zanetto 10/10 2083 days 3.31 2%
David Haines-Hanham 10/10 2089 days true 3.3 2%
Sally Haines 10/10 2089 days true 3.3 2%
Katie 10/10 2114 days 3.26 2%
Stefanie Summer 10/10 2114 days 3.26 2%
seb_lag 9/10 2114 days 3.26 2%
Geo 10/10 2114 days 3.26 2%
Ineke & Wouter 8/10 2114 days 3.09 1%
sally haines-hanham 10/10 2114 days 3.26 2%
Marc Greeve 10/10 2122 days true 3.24 2%
Paul Eaves 10/10 2175 days 3.15 1%
Anna Barber 9/10 2175 days 3.15 1%
Adam 10/10 2206 days 3.1 1%
Rob & Margot 10/10 2236 days 3.05 1%
Vikki reeves 10/10 2236 days 3.05 1%
Gerard McAuley 10/10 2236 days 3.05 1%
Stephanie 10/10 2240 days true 3.04 1%
Ben Z 10/10 2389 days 2.78 1%
GLD 10/10 2420 days 2.73 1%
Colin Bond 10/10 2420 days 2.73 1%
HandH 10/10 2420 days 2.73 1%
Chris Ledwig 10/10 2420 days 2.73 1%
joepolog40 10/10 2420 days 2.73 1%
titougreg29 10/10 2448 days 2.68 1%
Brian 10/10 2448 days 2.68 1%
Wibo de Vries 10/10 2448 days 2.68 1%
Katie&Mike U 10/10 2448 days 2.68 1%
Peg Wooten 10/10 2479 days 2.63 1%
Marc Hoskins 10/10 2479 days 2.63 1%
Velvette 10/10 2479 days 2.63 1%
Stephanie Zellerer 10/10 2479 days 2.63 1%
Tina Gehmecker 10/10 2479 days 2.63 1%
paulcallanan 10/10 2479 days 2.63 1%
Tom Batty 10/10 2479 days 2.63 1%
Dave Worthington 10/10 2479 days 2.63 1%
Jodie Cronk 10/10 2479 days 2.63 1%
Jen&Digs M 10/10 2510 days 2.58 1%
Paul Leow 10/10 2510 days 2.58 1%
phnz 10/10 2510 days 2.58 1%
medellia371 10/10 2540 days 2.53 1%
Ihopkin 10/10 2540 days 2.53 1%
dan_robyn 10/10 2571 days 2.47 1%
erinlongtrail 10/10 2571 days 2.47 1%
sal 10/10 2601 days 2.42 1%
Horius 10/10 2601 days 2.42 1%
kayburns 9/10 2601 days 2.42 1%
Funkytiptoe 10/10 2601 days 2.42 1%
Christian Fell 10/10 2601 days 2.42 1%
aloedriscoll 10/10 2724 days 2.21 0%
h schmidt 10/10 2754 days 2.16 0%
jensmitty 10/10 2754 days 2.16 0%
aubreyfalk 10/10 2754 days 2.16 0%
WDC_Oxfam2012 10/10 2754 days 2.16 0%
doublesessions 9/10 2785 days 2.11 0%
tdean 10/10 2785 days 2.11 0%
Ewan 10/10 2785 days 2.11 0%
StefanKatie 10/10 2814 days 2.06 0%
François 10/10 2845 days 2.0 0%
essy 10/10 2876 days 1.95 0%
Bkeeping 10/10 2876 days 1.95 0%
mandaroni 10/10 2906 days 1.9 0%
cioffil 10/10 2937 days 1.85 0%
jackmason 10/10 2937 days 1.85 0%
greanman 10/10 2937 days 1.85 0%
jimmynew7121 10/10 2967 days 1.79 0%
lmharwood 10/10 2998 days 1.74 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

-2.77% 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 22 days. Adjustments are according to the following table.

Days Adjustment
19 -0.38%
20 -0.40%
21 -0.42%
22 -0.44%
23 -0.46%
24 -0.48%
25 -0.50%

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.