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
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 |  |
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 | |
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 | |
4.61 | 2% |
| Sally Haines | 10/10 | 1943 days | |
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 | |
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 | |
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.