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

73.12%

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 1454 days 94%
Connor Hormell 10/10 1516 days 100%
Karlee Hormell 9/10 1517 days 100%
Lucy Millett 5/10 1519 days 81%
Mona Uttendorf 6/10 1520 days 83%
Lisa 8/10 1526 days 95%
Barbara 10/10 1528 days 99%
Menguy Thibault 6/10 1759 days 73%
Anna Lerchl 8/10 1784 days 83%
Hannes 9/10 1786 days 87%
Marlene Buchwald 4/10 1803 days 68%
Andreas Schiefer 9/10 1819 days 86%
Catharina Cuntz 9/10 1823 days 86%
Franziska and Sabine 7/10 1830 days 77%
Thomas and Katia 6/10 1863 days 69%
Michal Kamradek 7/10 2223 days 61%
Jutta Bernhart 6/10 2236 days 55%
Richard 7/10 2397 days 53%
Ondrej Stepanek 3/10 2488 days 42%
Boneschova Jarka 7/10 2488 days 49%
Jakub Stastny 4/10 2489 days 43%
Granjon 8/10 2520 days 50%
Miriam Grund 9/10 2523 days 53%
Philip Donachie 8/10 2535 days 49%
Max Tetzlaff 8/10 2545 days 49%
Elise Boinnot 9/10 2546 days 51%
Thomas Dequidt 7/10 2546 days 47%
Claudia 7/10 2556 days 46%
Bertrand Gilles 4/10 2866 days 29%
Clodec 8/10 2879 days 34%
ToGy 1/10 3249 days 13%
Slangen 7/10 3271 days 16%
katel86 8/10 3431 days 9%
Johnno25 7/10 3493 days 6%
rgoodwi3 10/10 3523 days 5%
Alice Bastiman 5/10 3592 days 2%
Natalie Maguire 9/10 3598 days 2%
Andreas Rath 4/10 3600 days 1%
Nikolas Woelzel 3/10 3617 days 1%
Adam Hayley 4/10 3627 days 0%
Ines 8/10 3630 days 0%
Derek Archibald 7/10 3636 days 0%
Andrew Hammond 8/10 3766 days 22%
Matt Roper 8/10 3971 days 22%
M and H Lunn 7/10 3989 days 21%
Dersiree Moerbeek 6/10 4006 days 19%
Bram-Jan M 8/10 4007 days 22%
Sebastien Briant 4/10 4007 days 18%
Coby Aalbrecht 8/10 4007 days 22%
Wolfgang G 9/10 4014 days 23%
J P Paulvast 8/10 4022 days 22%
Jorrit Bust 7/10 4022 days 21%
_mel_ 5/10 4039 days 19%
robineth 4/10 4063 days 18%
Mark Piche 7/10 4119 days 21%
KYinNZ 6/10 4223 days 19%
KatieR 8/10 4312 days 22%
Andrew 9/10 4314 days 23%
gerhardm 6/10 4314 days 19%
PeteH1 6/10 4330 days 19%
AliR 5/10 4330 days 19%
Nick 9/10 4330 days 23%
Andreas 7/10 4386 days 21%
Katherine 7/10 4419 days 21%
Claire 7/10 4427 days 21%

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

-4.11% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 47 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 -4.05%
198 -4.07%
199 -4.09%
200 -4.11%
201 -4.13%
202 -4.15%
203 -4.17%

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.