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 National Army Museum.

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

National Army Museum

Valid Reviews

23 Valid Reviews

The National Army Museum experience has a total of 23 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 23 valid reviews:

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

83.48% Average

The raw data average (mean) for all the National Army Museum valid reviews is 83.48% and is based on 23 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
Tourist in my own country 9/10 134 days 100%
Gia 8/10 500 days 58%
D&R 5/10 622 days 33%
Chulses 9/10 684 days 32%
Alison 9/10 714 days 28%
Nadia 8/10 806 days 17%
Marion & Leonie 10/10 834 days 15%
Michael S 9/10 834 days 15%
Tim Bartlett 10/10 865 days 12%
Dan 10/10 865 days 12%
Jude 8/10 926 days 8%
Steffi 6/10 926 days 7%
Jess 10/10 1079 days 4%
Julien Turpin 9/10 1375 days 3%
Judy Aspinall 8/10 1490 days 3%
Anh Huynh 7/10 1592 days 2%
Marina 7/10 1927 days 2%
Chris Whittington 9/10 2318 days 1%
Mathieu Flechelle 8/10 2326 days 1%
Lois Moreland 9/10 2357 days 1%
John Treasure 7/10 2660 days 0%
GN100 7/10 2844 days 0%
L P 10/10 2875 days 0%


No Adjustment

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

Final Ranking Score


The final ranking score once 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.