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

53 Valid Reviews

The PureTrails New Zealand experience has a total of 55 reviews. There are 53 valid reviews that are included when calculating the ranking score and 2 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 53 valid reviews:

Rating Count Percentage
10/10 38
72%
9/10 15
28%
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%

97.17% Average

The raw data average (mean) for all the PureTrails New Zealand valid reviews is 97.17% and is based on 53 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

98.34%

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
Gordon 10/10 235 days 91.25 100%
Alias Gertrude 10/10 570 days 48.68 53%
Jan 10/10 570 days 48.68 53%
helen mclean 10/10 601 days 43.67 47%
John Hayman 9/10 721 days 27.17 29%
wendy mesley 9/10 935 days 9.06 9%
Michelle 10/10 935 days 9.06 9%
Derwin Arnstead 10/10 1025 days 5.78 6%
Anne Duncan 10/10 1390 days 4.42 4%
Nick Smith 9/10 1696 days 3.82 3%
Fiona 9/10 1696 days 3.82 3%
Dianne Kidd 10/10 1725 days 3.77 3%
David Darmanin 10/10 1725 days 3.77 3%
Sam 10/10 1756 days 3.71 3%
Julie B 10/10 1787 days 3.65 3%
Janelle Varlow 10/10 1817 days 3.59 3%
Helen Bryan 10/10 2031 days 3.17 3%
Geoff Bartlett 10/10 2062 days 3.11 3%
Diana Houtman 10/10 2062 days 3.11 3%
Mary Karl 10/10 2062 days 3.11 3%
fgiacoma 9/10 2090 days 3.05 3%
ross murray 10/10 2121 days 2.99 3%
Jane Geldenhuys 10/10 2152 days 2.93 2%
Ian Anderson 10/10 2152 days 2.93 2%
Ros Noone 9/10 2182 days 2.87 2%
Peter Hales 9/10 2396 days 2.45 2%
David Vinsen 10/10 2427 days 2.39 2%
Caroline Barber 9/10 2455 days 2.34 2%
Denise McMahon 9/10 2455 days 2.34 2%
cmh 10/10 2547 days 2.16 2%
John Marchment 10/10 2578 days 2.1 2%
Ian and Chris Homann 10/10 2792 days 1.68 1%
Nancy Stone 10/10 2820 days 1.62 1%
Graham Bamford 10/10 2851 days 1.56 1%
pauart 10/10 2912 days 1.44 1%
jennic 9/10 2943 days 1.38 1%
smithereen 10/10 3126 days 1.03 0%
Maryel 10/10 3126 days 1.03 0%
Woods 10/10 3157 days 0.96 0%
JennyT 10/10 3157 days 0.96 0%
maureenmf 10/10 3157 days 0.96 0%
frankie 10/10 3157 days 0.96 0%
FrancesJ 9/10 3157 days 0.96 0%
AlanWillow 10/10 3157 days 0.96 0%
cribble 9/10 3157 days 0.96 0%
shoanthomson 10/10 3157 days 0.96 0%
Montpellier 9/10 3186 days 0.91 0%
LIZ_MONTGOMERY 10/10 3217 days 0.85 0%
upmack 10/10 3217 days 0.85 0%
Michael73 10/10 3248 days 0.79 0%
LizH 10/10 3278 days 0.73 0%
lyndab 9/10 3278 days 0.73 0%
frendoj 9/10 3278 days 0.73 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

-3.71% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 55 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 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.

The PureTrails New Zealand experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -3.66%
198 -3.67%
199 -3.69%
200 -3.71%
201 -3.73%
202 -3.75%
203 -3.77%

Final Ranking Score

95%

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.