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 PureTrails New Zealand.
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
PureTrails New Zealand
Valid Reviews
48 Valid Reviews
The PureTrails New Zealand experience has a total of 49 reviews. There are 48 valid reviews that are included when calculating the ranking score and 1 invalid review 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 48 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 34 |
|
71% |
| 9/10 | 14 |
|
29% |
| 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% |
97.08% Average
The raw data average (mean) for all the PureTrails New Zealand valid reviews is 97.08% and is based on 48 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.
Weighted Average
96.95%
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 |
|---|---|---|---|---|---|
| wendy mesley | 9/10 | 201 days | 93.6 | 100% | |
| Michelle | 10/10 | 201 days | 93.6 | 100% | |
| Derwin Arnstead | 10/10 | 290 days | 86.67 | 92% | |
| Anne Duncan | 10/10 | 655 days | 35.68 | 36% | |
| Nick Smith | 9/10 | 961 days | 7.85 | 5% | |
| Fiona | 9/10 | 961 days | 7.85 | 5% | |
| Dianne Kidd | 10/10 | 990 days | 6.75 | 4% | |
| David Darmanin | 10/10 | 991 days | 6.71 | 4% | |
| Sam | 10/10 | 1021 days | 5.87 | 3% | |
| Julie B | 10/10 | 1052 days | 5.29 | 3% | |
| Janelle Varlow | 10/10 | 1082 days | 5.03 | 2% | |
| Helen Bryan | 10/10 | 1296 days | 4.72 | 2% | |
| Geoff Bartlett | 10/10 | 1327 days | 4.68 | 2% | |
| Diana Houtman | 10/10 | 1327 days | 4.68 | 2% | |
| Mary Karl | 10/10 | 1327 days | 4.68 | 2% | |
| fgiacoma | 9/10 | 1355 days | 4.64 | 2% | |
| ross murray | 10/10 | 1387 days | 4.6 | 2% | |
| Jane Geldenhuys | 10/10 | 1417 days | 4.56 | 2% | |
| Ian Anderson | 10/10 | 1417 days | 4.56 | 2% | |
| Ros Noone | 9/10 | 1447 days | 4.52 | 2% | |
| Peter Hales | 9/10 | 1662 days | 4.22 | 1% | |
| David Vinsen | 10/10 | 1693 days | 4.18 | 1% | |
| Caroline Barber | 9/10 | 1721 days | 4.14 | 1% | |
| Denise McMahon | 9/10 | 1721 days | 4.14 | 1% | |
| cmh | 10/10 | 1813 days | 4.02 | 1% | |
| John Marchment | 10/10 | 1844 days | 3.97 | 1% | |
| Ian and Chris Homann | 10/10 | 2058 days | 3.68 | 1% | |
| Nancy Stone | 10/10 | 2086 days | 3.64 | 1% | |
| Graham Bamford | 10/10 | 2117 days | 3.6 | 1% | |
| pauart | 10/10 | 2178 days | 3.52 | 1% | |
| jennic | 9/10 | 2209 days | 3.47 | 1% | |
| smithereen | 10/10 | 2392 days | 3.22 | 0% | |
| Maryel | 10/10 | 2392 days | 3.22 | 0% | |
| Woods | 10/10 | 2423 days | 3.18 | 0% | |
| JennyT | 10/10 | 2423 days | 3.18 | 0% | |
| maureenmf | 10/10 | 2423 days | 3.18 | 0% | |
| frankie | 10/10 | 2423 days | 3.18 | 0% | |
| FrancesJ | 9/10 | 2423 days | 3.18 | 0% | |
| AlanWillow | 10/10 | 2423 days | 3.18 | 0% | |
| cribble | 9/10 | 2423 days | 3.18 | 0% | |
| shoanthomson | 10/10 | 2423 days | 3.18 | 0% | |
| Montpellier | 9/10 | 2452 days | 3.14 | 0% | |
| LIZ_MONTGOMERY | 10/10 | 2483 days | 3.1 | 0% | |
| upmack | 10/10 | 2483 days | 3.1 | 0% | |
| Michael73 | 10/10 | 2514 days | 3.06 | 0% | |
| LizH | 10/10 | 2544 days | 3.02 | 0% | |
| lyndab | 9/10 | 2544 days | 3.02 | 0% | |
| frendoj | 9/10 | 2544 days | 3.02 | 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 PureTrails New Zealand experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-3.46% Adjustment
There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the PureTrails New Zealand 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 PureTrails New Zealand experience has been adjusted for 173 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 170 | -3.40% |
| 171 | -3.42% |
| 172 | -3.44% |
| 173 | -3.46% |
| 174 | -3.48% |
| 175 | -3.50% |
| 176 | -3.52% |
| … | … |
Final Ranking Score
93%
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.