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 Craters of the Moon.

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

Craters of the Moon

Valid Reviews

66 Valid Reviews

The Craters of the Moon experience has a total of 66 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 66 valid reviews:

Rating Count Percentage
10/10 3
5%
9/10 10
15%
8/10 14
21%
7/10 16
24%
6/10 8
12%
5/10 4
6%
4/10 8
12%
3/10 2
3%
2/10 0
0%
1/10 1
2%

68.33% Average

The raw data average (mean) for all the Craters of the Moon valid reviews is 68.33% and is based on 66 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.

Face-to-Face Reviews

56 Face-to-Face Reviews

The Rankers team meets with travellers while they’re in New Zealand and conducts face-to-face surveys. These reviews, in our opinion, are the most trusted in the industry and represent a critical control sample. To our knowledge, we are the only travel review website in the world that has gone to this extent.

More about face-to-face reviews

Within the 66 valid reviews, the experience has 56 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 56 face-to-face reviews:

Rating Count Percentage
10/10 2
4%
9/10 9
16%
8/10 12
21%
7/10 14
25%
6/10 7
13%
5/10 3
5%
4/10 7
13%
3/10 2
4%
2/10 0
0%
1/10 0
0%

68.93% Average

The raw data average (mean) for all the Craters of the Moon face-to-face reviews is 68.93% and is based on 56 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

58.66%

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
Ngamarama Mataio 4/10 82 days 100%
Michael Bley 7/10 1605 days 5%
Connor Hormell 10/10 1667 days 5%
Karlee Hormell 9/10 1668 days 5%
Lucy Millett 5/10 1670 days 4%
Mona Uttendorf 6/10 1671 days 4%
Lisa 8/10 1677 days 5%
Barbara 10/10 1679 days 5%
Menguy Thibault 6/10 1910 days 4%
Anna Lerchl 8/10 1935 days 4%
Hannes 9/10 1937 days 4%
Marlene Buchwald 4/10 1954 days 3%
Andreas Schiefer 9/10 1970 days 4%
Catharina Cuntz 9/10 1974 days 4%
Franziska and Sabine 7/10 1981 days 4%
Thomas and Katia 6/10 2014 days 3%
Michal Kamradek 7/10 2374 days 3%
Jutta Bernhart 6/10 2387 days 3%
Richard 7/10 2548 days 2%
Ondrej Stepanek 3/10 2639 days 2%
Boneschova Jarka 7/10 2639 days 2%
Jakub Stastny 4/10 2640 days 2%
Granjon 8/10 2671 days 2%
Miriam Grund 9/10 2674 days 2%
Philip Donachie 8/10 2686 days 2%
Max Tetzlaff 8/10 2696 days 2%
Elise Boinnot 9/10 2697 days 2%
Thomas Dequidt 7/10 2697 days 2%
Claudia 7/10 2707 days 2%
Bertrand Gilles 4/10 3017 days 1%
Clodec 8/10 3030 days 1%
ToGy 1/10 3400 days 0%
Slangen 7/10 3422 days 1%
katel86 8/10 3582 days 0%
Johnno25 7/10 3644 days 0%
rgoodwi3 10/10 3674 days 1%
Alice Bastiman 5/10 3743 days 1%
Natalie Maguire 9/10 3749 days 1%
Andreas Rath 4/10 3751 days 1%
Nikolas Woelzel 3/10 3768 days 1%
Adam Hayley 4/10 3778 days 1%
Ines 8/10 3781 days 1%
Derek Archibald 7/10 3787 days 1%
Andrew Hammond 8/10 3917 days 1%
Matt Roper 8/10 4122 days 1%
M and H Lunn 7/10 4140 days 1%
Dersiree Moerbeek 6/10 4157 days 1%
Bram-Jan M 8/10 4158 days 1%
Sebastien Briant 4/10 4158 days 1%
Coby Aalbrecht 8/10 4158 days 1%
Wolfgang G 9/10 4165 days 1%
J P Paulvast 8/10 4173 days 1%
Jorrit Bust 7/10 4173 days 1%
_mel_ 5/10 4190 days 1%
robineth 4/10 4214 days 1%
Mark Piche 7/10 4270 days 1%
KYinNZ 6/10 4374 days 1%
KatieR 8/10 4463 days 1%
Andrew 9/10 4465 days 1%
gerhardm 6/10 4465 days 1%
PeteH1 6/10 4481 days 1%
AliR 5/10 4481 days 1%
Nick 9/10 4481 days 1%
Andreas 7/10 4537 days 1%
Katherine 7/10 4570 days 1%
Claire 7/10 4578 days 1%

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 Craters of the Moon experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-0.61% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 119 days. However the Craters of the Moon 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 Craters of the Moon experience has been adjusted for 57 days. Adjustments are according to the following table.

Days Adjustment
54 -0.57%
55 -0.59%
56 -0.60%
57 -0.61%
58 -0.62%
59 -0.63%
60 -0.64%

Final Ranking Score

58%

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.