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 1777 days 100%
Bert Roy 10/10 1777 days 100%
Sarah Baxter 10/10 1777 days 100%
June Fang 10/10 1808 days 98%
Kathy Torzsok 10/10 1808 days 98%
Carolyn Hobson 10/10 2143 days 80%
Nigel Garrard 10/10 2174 days 78%
Kylie McShanag 10/10 2477 days 62%
Joanna 10/10 2508 days 60%
George Couch 10/10 2509 days 60%
Patrick Ong 10/10 2874 days 40%
John Paxinos 10/10 2874 days 40%
ALAN MOLTON 9/10 2874 days 40%
Mary-Alice 10/10 2874 days 40%
Alex Chung 10/10 2874 days 40%
wen 10/10 3239 days 20%
dankajonjic 10/10 3239 days 20%
Mags 10/10 3239 days 20%
belsta74 10/10 3270 days 18%
tylercraddock 10/10 3270 days 18%
kitkatchunky_123 10/10 3270 days 18%
murfster 10/10 3605 days 0%
ralphfromgoondi 10/10 3605 days 0%
alexgoss 10/10 3939 days 25%
Harlow 10/10 3939 days 25%
Big Al 10/10 3939 days 25%
presel 10/10 3970 days 25%
Soph707 10/10 3970 days 25%
LyndonM 10/10 3970 days 25%
GlenH 10/10 3970 days 25%
tkirk82 10/10 3970 days 25%
Dazbar23 10/10 3970 days 25%
benspictures 10/10 4001 days 25%
lapcam 10/10 4001 days 25%
jamophoto 10/10 4001 days 25%
Lisa78 10/10 4001 days 25%
Mel 10/10 4001 days 25%
yealmchev 10/10 4001 days 25%
ailzy 10/10 4304 days 25%
hedge23 10/10 4335 days 25%
DAC72 10/10 4335 days 25%
soccernaut 10/10 4335 days 25%
mazarg 10/10 4335 days 25%
caz916 10/10 4335 days 25%


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

-2.23% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 115 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 -2.20%
198 -2.21%
199 -2.22%
200 -2.23%
201 -2.24%
202 -2.26%
203 -2.27%

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.