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 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.

Cymen Crick's avatar

Cymen Crick

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

60.08%

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 4/10 457 days 100%
Michael Bley 7/10 1980 days 5%
Connor Hormell 10/10 2042 days 5%
Karlee Hormell 9/10 2043 days 5%
Lucy Millett 5/10 2045 days 4%
Mona Uttendorf 6/10 2046 days 4%
Lisa 8/10 2052 days 5%
Barbara 10/10 2054 days 5%
Menguy Thibault 6/10 2285 days 3%
Anna Lerchl 8/10 2310 days 4%
Hannes 9/10 2312 days 4%
Marlene Buchwald 4/10 2329 days 3%
Andreas Schiefer 9/10 2345 days 4%
Catharina Cuntz 9/10 2349 days 4%
Franziska and Sabine 7/10 2356 days 4%
Thomas and Katia 6/10 2389 days 3%
Michal Kamradek 7/10 2749 days 2%
Jutta Bernhart 6/10 2762 days 2%
Richard 7/10 2923 days 2%
Ondrej Stepanek 3/10 3014 days 1%
Boneschova Jarka 7/10 3014 days 1%
Jakub Stastny 4/10 3015 days 1%
Granjon 8/10 3046 days 1%
Miriam Grund 9/10 3049 days 1%
Philip Donachie 8/10 3061 days 1%
Max Tetzlaff 8/10 3071 days 1%
Elise Boinnot 9/10 3072 days 1%
Thomas Dequidt 7/10 3072 days 1%
Claudia 7/10 3082 days 1%
Bertrand Gilles 4/10 3392 days 0%
Clodec 8/10 3405 days 0%
ToGy 1/10 3775 days 1%
Slangen 7/10 3797 days 1%
katel86 8/10 3957 days 1%
Johnno25 7/10 4019 days 1%
rgoodwi3 10/10 4049 days 1%
Alice Bastiman 5/10 4118 days 1%
Natalie Maguire 9/10 4124 days 1%
Andreas Rath 4/10 4126 days 1%
Nikolas Woelzel 3/10 4143 days 1%
Adam Hayley 4/10 4153 days 1%
Ines 8/10 4156 days 1%
Derek Archibald 7/10 4162 days 1%
Andrew Hammond 8/10 4292 days 1%
Matt Roper 8/10 4497 days 1%
M and H Lunn 7/10 4515 days 1%
Dersiree Moerbeek 6/10 4532 days 1%
Bram-Jan M 8/10 4533 days 1%
Sebastien Briant 4/10 4533 days 1%
Coby Aalbrecht 8/10 4533 days 1%
Wolfgang G 9/10 4540 days 1%
J P Paulvast 8/10 4548 days 1%
Jorrit Bust 7/10 4548 days 1%
_mel_ 5/10 4565 days 1%
robineth 4/10 4589 days 1%
Mark Piche 7/10 4645 days 1%
KYinNZ 6/10 4749 days 1%
KatieR 8/10 4838 days 1%
Andrew 9/10 4840 days 1%
gerhardm 6/10 4840 days 1%
PeteH1 6/10 4856 days 1%
AliR 5/10 4856 days 1%
Nick 9/10 4857 days 1%
Andreas 7/10 4913 days 1%
Katherine 7/10 4945 days 1%
Claire 7/10 4953 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

-2.04% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 123 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 200 days. Adjustments are according to the following table.

Days Adjustment
197 -2.01%
198 -2.02%
199 -2.03%
200 -2.04%
201 -2.05%
202 -2.06%
203 -2.07%

Final Ranking Score

58%

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.