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

65 Valid Reviews

The Craters of the Moon experience has a total of 65 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 65 valid reviews:

Rating Count Percentage
10/10 3
5%
9/10 10
15%
8/10 14
22%
7/10 16
25%
6/10 8
12%
5/10 4
6%
4/10 7
11%
3/10 2
3%
2/10 0
0%
1/10 1
2%

68.77% Average

The raw data average (mean) for all the Craters of the Moon valid reviews is 68.77% and is based on 65 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 65 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

73.04%

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
Michael Bley 7/10 1405 days 93%
Connor Hormell 10/10 1467 days 100%
Karlee Hormell 9/10 1468 days 100%
Lucy Millett 5/10 1470 days 80%
Mona Uttendorf 6/10 1471 days 82%
Lisa 8/10 1477 days 94%
Barbara 10/10 1479 days 99%
Menguy Thibault 6/10 1710 days 73%
Anna Lerchl 8/10 1735 days 83%
Hannes 9/10 1737 days 87%
Marlene Buchwald 4/10 1754 days 68%
Andreas Schiefer 9/10 1770 days 86%
Catharina Cuntz 9/10 1774 days 86%
Franziska and Sabine 7/10 1781 days 77%
Thomas and Katia 6/10 1814 days 69%
Michal Kamradek 7/10 2174 days 60%
Jutta Bernhart 6/10 2187 days 54%
Richard 7/10 2348 days 53%
Ondrej Stepanek 3/10 2439 days 41%
Boneschova Jarka 7/10 2439 days 49%
Jakub Stastny 4/10 2440 days 42%
Granjon 8/10 2471 days 50%
Miriam Grund 9/10 2474 days 53%
Philip Donachie 8/10 2486 days 49%
Max Tetzlaff 8/10 2496 days 49%
Elise Boinnot 9/10 2497 days 52%
Thomas Dequidt 7/10 2497 days 47%
Claudia 7/10 2507 days 46%
Bertrand Gilles 4/10 2817 days 28%
Clodec 8/10 2830 days 34%
ToGy 1/10 3200 days 13%
Slangen 7/10 3222 days 16%
katel86 8/10 3382 days 9%
Johnno25 7/10 3444 days 6%
rgoodwi3 10/10 3474 days 6%
Alice Bastiman 5/10 3543 days 1%
Natalie Maguire 9/10 3549 days 2%
Andreas Rath 4/10 3551 days 1%
Nikolas Woelzel 3/10 3568 days 0%
Adam Hayley 4/10 3578 days 0%
Ines 8/10 3581 days 0%
Derek Archibald 7/10 3587 days 0%
Andrew Hammond 8/10 3717 days 20%
Matt Roper 8/10 3922 days 20%
M and H Lunn 7/10 3940 days 19%
Dersiree Moerbeek 6/10 3957 days 17%
Bram-Jan M 8/10 3958 days 20%
Sebastien Briant 4/10 3958 days 16%
Coby Aalbrecht 8/10 3958 days 20%
Wolfgang G 9/10 3965 days 21%
J P Paulvast 8/10 3973 days 20%
Jorrit Bust 7/10 3973 days 19%
_mel_ 5/10 3990 days 17%
robineth 4/10 4014 days 16%
Mark Piche 7/10 4070 days 19%
KYinNZ 6/10 4174 days 17%
KatieR 8/10 4263 days 20%
Andrew 9/10 4265 days 21%
gerhardm 6/10 4265 days 17%
PeteH1 6/10 4281 days 17%
AliR 5/10 4281 days 17%
Nick 9/10 4282 days 21%
Andreas 7/10 4337 days 19%
Katherine 7/10 4370 days 19%
Claire 7/10 4378 days 19%

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

-4.07% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 42 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 -4.01%
198 -4.03%
199 -4.05%
200 -4.07%
201 -4.09%
202 -4.11%
203 -4.13%

Final Ranking Score

69%

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.