Ranking Score Explained

Hello 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 Waipu Caves.

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.

Cymen Crick's avatar

Cymen Crick

Rankers Owner

Waipu Caves

Valid Reviews

27 Valid Reviews

The Waipu Caves experience has a total of 28 reviews. There are 27 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 27 valid reviews:

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

84.44% Average

The raw data average (mean) for all the Waipu Caves valid reviews is 84.44% and is based on 27 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
Ash Jane 9/10 557 days 100%
Roxkey 10/10 557 days 100%
Olivia 6/10 588 days 73%
Bluescruize 9/10 588 days 89%
Kris 10/10 710 days 53%
Crystal 7/10 710 days 47%
Stefan Hohmann 8/10 894 days 16%
Serena 8/10 923 days 12%
Bran 10/10 923 days 13%
Adam 8/10 923 days 12%
Backpack On Fire 10/10 954 days 10%
Richard & Chris, UK 6/10 954 days 7%
HB 9/10 954 days 10%
Milly 7/10 985 days 6%
Lisa 9/10 1015 days 5%
Stacey 10/10 1015 days 5%
Calum Brash 6/10 1046 days 2%
Emma 9/10 1138 days 3%
Anthony 9/10 1168 days 3%
Kristen 8/10 1260 days 2%
JT 10/10 1288 days 2%
Andrej 10/10 1350 days 2%
Laurine 8/10 1441 days 1%
Joseph 7/10 1503 days 1%
Juliane 8/10 1564 days 1%
Mikayla Candido 7/10 1700 days 0%
Debbie Lesurf 10/10 1722 days 1%


No Adjustment

Several adjustments to the weighted average may be added to improve relevancy and credibility. Waipu Caves does not meet the criteria for any of these adjustments to apply.

Final Ranking Score


The final ranking score once any adjustments, ratings, 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.