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's avatar

Nick Morrison

Rankers owner

PureTrails New Zealand

Valid Reviews

49 Valid Reviews

The PureTrails New Zealand experience has a total of 50 reviews. There are 49 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 49 valid reviews:

Rating Count Percentage
10/10 34
69%
9/10 15
31%
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%

96.94% Average

The raw data average (mean) for all the PureTrails New Zealand valid reviews is 96.94% and is based on 49 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

95.61%

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 Hayman 9/10 112 days 98.01 100%
wendy mesley 9/10 326 days 83.16 84%
Michelle 10/10 326 days 83.16 84%
Derwin Arnstead 10/10 416 days 72.58 73%
Anne Duncan 10/10 781 days 20.62 19%
Nick Smith 9/10 1087 days 5.01 2%
Fiona 9/10 1087 days 5.01 2%
Dianne Kidd 10/10 1116 days 4.97 2%
David Darmanin 10/10 1116 days 4.97 2%
Sam 10/10 1147 days 4.93 2%
Julie B 10/10 1178 days 4.89 2%
Janelle Varlow 10/10 1208 days 4.85 2%
Helen Bryan 10/10 1422 days 4.55 2%
Geoff Bartlett 10/10 1453 days 4.51 2%
Diana Houtman 10/10 1453 days 4.51 2%
Mary Karl 10/10 1453 days 4.51 2%
fgiacoma 9/10 1481 days 4.47 2%
ross murray 10/10 1512 days 4.43 2%
Jane Geldenhuys 10/10 1543 days 4.39 2%
Ian Anderson 10/10 1543 days 4.39 2%
Ros Noone 9/10 1573 days 4.35 2%
Peter Hales 9/10 1787 days 4.05 1%
David Vinsen 10/10 1818 days 4.01 1%
Caroline Barber 9/10 1846 days 3.97 1%
Denise McMahon 9/10 1846 days 3.97 1%
cmh 10/10 1938 days 3.85 1%
John Marchment 10/10 1969 days 3.8 1%
Ian and Chris Homann 10/10 2183 days 3.51 1%
Nancy Stone 10/10 2211 days 3.47 1%
Graham Bamford 10/10 2242 days 3.43 1%
pauart 10/10 2303 days 3.35 1%
jennic 9/10 2334 days 3.3 0%
smithereen 10/10 2517 days 3.05 0%
Maryel 10/10 2517 days 3.05 0%
Woods 10/10 2548 days 3.01 0%
JennyT 10/10 2548 days 3.01 0%
maureenmf 10/10 2548 days 3.01 0%
frankie 10/10 2548 days 3.01 0%
FrancesJ 9/10 2548 days 3.01 0%
AlanWillow 10/10 2548 days 3.01 0%
cribble 9/10 2548 days 3.01 0%
shoanthomson 10/10 2548 days 3.01 0%
Montpellier 9/10 2577 days 2.97 0%
LIZ_MONTGOMERY 10/10 2608 days 2.93 0%
upmack 10/10 2608 days 2.93 0%
Michael73 10/10 2639 days 2.88 0%
LizH 10/10 2669 days 2.84 0%
lyndab 9/10 2669 days 2.84 0%
frendoj 9/10 2669 days 2.84 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

-1.68% 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 84 days. Adjustments are according to the following table.

Days Adjustment
81 -1.62%
82 -1.64%
83 -1.66%
84 -1.68%
85 -1.70%
86 -1.72%
87 -1.74%

Final Ranking Score

94%

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.