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
Rankers owner
PiwiWiwi Campervans
Valid Reviews
170 Valid Reviews
The PiwiWiwi Campervans experience has a total of 177 reviews. There are 170 valid reviews that are included when calculating the ranking score and 7 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 170 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 158 |
|
93% |
| 9/10 | 11 |
|
6% |
| 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% |
99.24% Average
The raw data average (mean) for all the PiwiWiwi Campervans valid reviews is 99.24% and is based on 170 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 170 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 |
|---|---|---|---|---|---|
| JPliska | 10/10 | 47 days | 99.65 | 100% | |
| Henry Meehan | 10/10 | 47 days | 99.65 | 100% | |
| John and Barbara | 10/10 | 78 days | 99.04 | 99% | |
| Phillip Hartin | 10/10 | 78 days | 99.04 | 99% | |
| Andrew Borch | 10/10 | 78 days | 99.04 | 99% | |
| Joash Picard | 10/10 | 109 days | 98.12 | 98% | |
| Carrie | 10/10 | 109 days | 98.12 | 98% | |
| Zoe | 10/10 | 109 days | 98.12 | 98% | |
| Kara & Joash | 10/10 | 109 days | 98.12 | 98% | |
| Marian van Voorn | 9/10 | 109 days | 98.12 | 98% | |
| Amandine | 10/10 | 109 days | 98.12 | 98% | |
| David Aylmore | 9/10 | 139 days | 96.94 | 97% | |
| Saliha Hamici | 10/10 | 139 days | 96.94 | 97% | |
| Sebastian Torfs | 10/10 | 139 days | 96.94 | 97% | |
| Lochoe Mckinnon | 10/10 | 170 days | 95.42 | 96% | |
| Eric | 10/10 | 170 days | 95.42 | 96% | |
| Mia Tranthem | 10/10 | 170 days | 95.42 | 96% | |
| kael Matthews | 10/10 | 170 days | 95.42 | 96% | |
| Sophie Skinner | 10/10 | 170 days | 95.42 | 96% | |
| Eddie | 10/10 | 323 days | 83.47 | 83% | |
| hazel woodhead | 10/10 | 323 days | 83.47 | 83% | |
| Tom Smithwick | 10/10 | 353 days | 80.25 | 80% | |
| Matt | 10/10 | 353 days | 80.25 | 80% | |
| John Sivigny | 10/10 | 353 days | 80.25 | 80% | |
| Lizzie Watts | 10/10 | 353 days | 80.25 | 80% | |
| Jonathan Clay | 10/10 | 384 days | 76.63 | 76% | |
| Marita O'Brien | 10/10 | 384 days | 76.63 | 76% | |
| Jan | 9/10 | 384 days | 76.63 | 76% | |
| Henry | 10/10 | 384 days | 76.63 | 76% | |
| Andy Barlow | 10/10 | 412 days | 73.1 | 73% | |
| kath combes | 10/10 | 412 days | 73.1 | 73% | |
| Roz Lobo | 10/10 | 412 days | 73.1 | 73% | |
| Jorg | 10/10 | 412 days | 73.1 | 73% | |
| Georgia | 10/10 | 412 days | 73.1 | 73% | |
| Joss, Georgia and Stef | 10/10 | 412 days | 73.1 | 73% | |
| petra | 10/10 | 443 days | 68.9 | 68% | |
| Richard Janes | 10/10 | 443 days | 68.9 | 68% | |
| Kristel & Tim | 10/10 | 443 days | 68.9 | 68% | |
| Felix Maliers | 10/10 | 443 days | 68.9 | 68% | |
| Greg and Syd | 9/10 | 474 days | 64.4 | 64% | |
| Rebecca Grace | 10/10 | 474 days | 64.4 | 64% | |
| Julia | 9/10 | 474 days | 64.4 | 64% | |
| Jonas Himpe | 10/10 | 504 days | 59.75 | 59% | |
| kohn stephan | 10/10 | 504 days | 59.75 | 59% | |
| Tim Leary | 10/10 | 504 days | 59.75 | 59% | |
| Tom Coul | 10/10 | 504 days | 59.75 | 59% | |
| Kim Verplancke | 10/10 | 504 days | 59.75 | 59% | |
| Chris Scrimshaw | 10/10 | 504 days | 59.75 | 59% | |
| Martina & Trev from Switzerland | 10/10 | 504 days | 59.75 | 59% | |
| Wendy and Vincent | 10/10 | 535 days | 54.64 | 54% | |
| James N | 10/10 | 627 days | 39.71 | 38% | |
| Gert van der Lugt | 10/10 | 749 days | 23.97 | 22% | |
| Stefan Giese | 10/10 | 749 days | 23.97 | 22% | |
| Hendrik Pschichholtz | 10/10 | 749 days | 23.97 | 22% | |
| Ray Verbeek | 10/10 | 749 days | 23.97 | 22% | |
| Andreas Herzog | 10/10 | 777 days | 21.02 | 19% | |
| Tracy Frauzel | 10/10 | 785 days |  |
24.27 | 22% |
| michel labrecque | 10/10 | 808 days | 18.05 | 16% | |
| Garrett South | 10/10 | 808 days | 18.05 | 16% | |
| Sofia Vadman | 10/10 | 808 days | 18.05 | 16% | |
| Patricia Pharr-Snyder | 10/10 | 869 days | 13.09 | 11% | |
| Gabriel Wappler | 10/10 | 1083 days | 5.02 | 2% | |
| Phillip M | 10/10 | 1114 days | 4.97 | 2% | |
| Sarah Considine | 10/10 | 1114 days | 4.97 | 2% | |
| Jack + Jade Hughes | 10/10 | 1114 days | 4.97 | 2% | |
| Gerry Fijal | 10/10 | 1114 days | 4.97 | 2% | |
| Melanie Keller | 10/10 | 1114 days | 4.97 | 2% | |
| Jasper S | 10/10 | 1143 days | 4.93 | 2% | |
| Linc | 9/10 | 1174 days | 4.89 | 2% | |
| Rose Gutekunst | 10/10 | 1174 days | 4.89 | 2% | |
| Marcel Janser | 10/10 | 1174 days | 4.89 | 2% | |
| Vicki Janes | 10/10 | 1205 days | 4.85 | 2% | |
| Ky Phillips | 10/10 | 1266 days | 4.77 | 2% | |
| Taylor Wirth | 10/10 | 1296 days | 4.72 | 2% | |
| Emma Gaylord | 10/10 | 1296 days | 4.72 | 2% | |
| Jean Capron | 10/10 | 1449 days | 4.52 | 2% | |
| Barbara | 10/10 | 1449 days | 4.52 | 2% | |
| Jan Menzies | 10/10 | 1449 days | 4.52 | 2% | |
| Jenny Mulholland | 10/10 | 1480 days | 4.47 | 2% | |
| Charles norris | 10/10 | 1480 days | 4.47 | 2% | |
| Lee & Sarah . | 10/10 | 1480 days | 4.47 | 2% | |
| Abi Fielder | 10/10 | 1508 days | 4.43 | 2% | |
| janny van der Burg | 10/10 | 1508 days | 4.43 | 2% | |
| HANNAH BROOKSBANK | 10/10 | 1508 days | 4.43 | 2% | |
| Simon Betschart | 10/10 | 1508 days | 4.43 | 2% | |
| Yannick | 10/10 | 1539 days | 4.39 | 2% | |
| MikeHoncho | 10/10 | 1539 days | 4.39 | 2% | |
| Dave Ruijter | 10/10 | 1539 days | 4.39 | 2% | |
| Alison Gemrany | 10/10 | 1539 days | 4.39 | 2% | |
| AndyDavies | 10/10 | 1570 days | 4.35 | 2% | |
| Priscilla | 10/10 | 1600 days | 4.31 | 2% | |
| Sarah Jones | 10/10 | 1600 days | 4.31 | 2% | |
| Erwin & Dani Matijsen | 10/10 | 1600 days | 4.31 | 2% | |
| Alanna Y | 10/10 | 1600 days | 4.31 | 2% | |
| Sal Hubert | 10/10 | 1630 days | |
5.12 | 3% |
| Mia & Martin | 10/10 | 1631 days | 4.27 | 2% | |
| Adam Miller | 10/10 | 1661 days | 4.22 | 2% | |
| Joe Kuchman | 10/10 | 1784 days | 4.06 | 1% | |
| Ryan & Rita Pierce | 10/10 | 1814 days | 4.02 | 1% | |
| Janet Mook | 9/10 | 1845 days | 3.97 | 1% | |
| Andy/Robyn Long | 10/10 | 1845 days | 3.97 | 1% | |
| Jon Jamie | 10/10 | 1845 days | 3.97 | 1% | |
| Erica Bradford | 10/10 | 1873 days | 3.93 | 1% | |
| Paulo Dias | 10/10 | 1873 days | 3.93 | 1% | |
| Jana Zanetto | 10/10 | 1873 days | 3.93 | 1% | |
| David Haines-Hanham | 10/10 | 1879 days | |
4.71 | 2% |
| Sally Haines | 10/10 | 1879 days | |
4.71 | 2% |
| Katie | 10/10 | 1904 days | 3.89 | 1% | |
| Stefanie Summer | 10/10 | 1904 days | 3.89 | 1% | |
| seb_lag | 9/10 | 1904 days | 3.89 | 1% | |
| Geo | 10/10 | 1904 days | 3.89 | 1% | |
| Ineke & Wouter | 8/10 | 1904 days | 3.89 | 1% | |
| sally haines-hanham | 10/10 | 1904 days | 3.89 | 1% | |
| Marc Greeve | 10/10 | 1912 days | |
4.66 | 2% |
| Paul Eaves | 10/10 | 1965 days | 3.81 | 1% | |
| Anna Barber | 9/10 | 1965 days | 3.81 | 1% | |
| Adam | 10/10 | 1996 days | 3.77 | 1% | |
| Rob & Margot | 10/10 | 2026 days | 3.72 | 1% | |
| Vikki reeves | 10/10 | 2026 days | 3.72 | 1% | |
| Gerard McAuley | 10/10 | 2026 days | 3.72 | 1% | |
| Stephanie | 10/10 | 2030 days | |
4.46 | 2% |
| Ben Z | 10/10 | 2179 days | 3.52 | 1% | |
| GLD | 10/10 | 2210 days | 3.47 | 1% | |
| Colin Bond | 10/10 | 2210 days | 3.47 | 1% | |
| HandH | 10/10 | 2210 days | 3.47 | 1% | |
| Chris Ledwig | 10/10 | 2210 days | 3.47 | 1% | |
| joepolog40 | 10/10 | 2210 days | 3.47 | 1% | |
| titougreg29 | 10/10 | 2238 days | 3.43 | 1% | |
| Brian | 10/10 | 2238 days | 3.43 | 1% | |
| Wibo de Vries | 10/10 | 2238 days | 3.43 | 1% | |
| Katie&Mike U | 10/10 | 2238 days | 3.43 | 1% | |
| Peg Wooten | 10/10 | 2269 days | 3.39 | 1% | |
| Marc Hoskins | 10/10 | 2269 days | 3.39 | 1% | |
| Velvette | 10/10 | 2269 days | 3.39 | 1% | |
| Stephanie Zellerer | 10/10 | 2269 days | 3.39 | 1% | |
| Tina Gehmecker | 10/10 | 2269 days | 3.39 | 1% | |
| paulcallanan | 10/10 | 2269 days | 3.39 | 1% | |
| Tom Batty | 10/10 | 2269 days | 3.39 | 1% | |
| Dave Worthington | 10/10 | 2269 days | 3.39 | 1% | |
| Jodie Cronk | 10/10 | 2269 days | 3.39 | 1% | |
| Jen&Digs M | 10/10 | 2300 days | 3.35 | 1% | |
| Paul Leow | 10/10 | 2300 days | 3.35 | 1% | |
| phnz | 10/10 | 2300 days | 3.35 | 1% | |
| medellia371 | 10/10 | 2330 days | 3.31 | 1% | |
| Ihopkin | 10/10 | 2330 days | 3.31 | 1% | |
| dan_robyn | 10/10 | 2361 days | 3.27 | 1% | |
| erinlongtrail | 10/10 | 2361 days | 3.27 | 1% | |
| sal | 10/10 | 2391 days | 3.22 | 1% | |
| Horius | 10/10 | 2391 days | 3.22 | 1% | |
| kayburns | 9/10 | 2391 days | 3.22 | 1% | |
| Funkytiptoe | 10/10 | 2391 days | 3.22 | 1% | |
| Christian Fell | 10/10 | 2391 days | 3.22 | 1% | |
| aloedriscoll | 10/10 | 2514 days | 3.06 | 0% | |
| h schmidt | 10/10 | 2544 days | 3.02 | 0% | |
| jensmitty | 10/10 | 2544 days | 3.02 | 0% | |
| aubreyfalk | 10/10 | 2544 days | 3.02 | 0% | |
| WDC_Oxfam2012 | 10/10 | 2544 days | 3.02 | 0% | |
| doublesessions | 9/10 | 2575 days | 2.97 | 0% | |
| tdean | 10/10 | 2575 days | 2.97 | 0% | |
| Ewan | 10/10 | 2575 days | 2.97 | 0% | |
| StefanKatie | 10/10 | 2604 days | 2.93 | 0% | |
| François | 10/10 | 2635 days | 2.89 | 0% | |
| essy | 10/10 | 2666 days | 2.85 | 0% | |
| Bkeeping | 10/10 | 2666 days | 2.85 | 0% | |
| mandaroni | 10/10 | 2696 days | 2.81 | 0% | |
| cioffil | 10/10 | 2727 days | 2.76 | 0% | |
| jackmason | 10/10 | 2727 days | 2.76 | 0% | |
| greanman | 10/10 | 2727 days | 2.76 | 0% | |
| jimmynew7121 | 10/10 | 2757 days | 2.72 | 0% | |
| lmharwood | 10/10 | 2788 days | 2.68 | 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
-0.36% 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 18 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 15 | -0.30% |
| 16 | -0.32% |
| 17 | -0.34% |
| 18 | -0.36% |
| 19 | -0.38% |
| 20 | -0.40% |
| 21 | -0.42% |
| … | … |
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.