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 NZ Snow Tours.

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

NZ Snow Tours

Valid Reviews

44 Valid Reviews

The NZ Snow Tours experience has a total of 44 valid reviews. There are no 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 44 valid reviews:

Rating Count Percentage
10/10 43
9/10 1
8/10 0
7/10 0
6/10 0
5/10 0
4/10 0
3/10 0
2/10 0
1/10 0

99.77% Average

The raw data average (mean) for all the NZ Snow Tours valid reviews is 99.77% and is based on 44 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


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 Relative Weight
Eddy Bussiere 10/10 2006 days 100%
Bert Roy 10/10 2006 days 100%
Sarah Baxter 10/10 2006 days 100%
June Fang 10/10 2037 days 98%
Kathy Torzsok 10/10 2037 days 98%
Carolyn Hobson 10/10 2372 days 75%
Nigel Garrard 10/10 2403 days 73%
Kylie McShanag 10/10 2706 days 53%
Joanna 10/10 2737 days 51%
George Couch 10/10 2738 days 51%
Patrick Ong 10/10 3103 days 27%
John Paxinos 10/10 3103 days 27%
ALAN MOLTON 9/10 3103 days 27%
Mary-Alice 10/10 3103 days 27%
Alex Chung 10/10 3103 days 27%
wen 10/10 3468 days 2%
dankajonjic 10/10 3468 days 2%
Mags 10/10 3468 days 2%
belsta74 10/10 3499 days 0%
tylercraddock 10/10 3499 days 0%
kitkatchunky_123 10/10 3499 days 0%
murfster 10/10 3834 days 24%
ralphfromgoondi 10/10 3834 days 24%
alexgoss 10/10 4168 days 24%
Harlow 10/10 4168 days 24%
Big Al 10/10 4168 days 24%
presel 10/10 4199 days 24%
Soph707 10/10 4199 days 24%
LyndonM 10/10 4199 days 24%
GlenH 10/10 4199 days 24%
tkirk82 10/10 4199 days 24%
Dazbar23 10/10 4199 days 24%
benspictures 10/10 4230 days 24%
lapcam 10/10 4230 days 24%
jamophoto 10/10 4230 days 24%
Lisa78 10/10 4230 days 24%
Mel 10/10 4230 days 24%
yealmchev 10/10 4230 days 24%
ailzy 10/10 4533 days 24%
hedge23 10/10 4564 days 24%
DAC72 10/10 4564 days 24%
soccernaut 10/10 4564 days 24%
mazarg 10/10 4564 days 24%
caz916 10/10 4564 days 24%


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 NZ Snow Tours experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.13% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 49 days. However the NZ Snow Tours 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 NZ Snow Tours experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.07%
198 -4.09%
199 -4.11%
200 -4.13%
201 -4.16%
202 -4.18%
203 -4.20%

Final Ranking Score


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.