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

73.16%

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 Face-to-Face Weight Relative Weight
Michael Bley 7/10 1158 days true 4.44 93%
Connor Hormell 10/10 1220 days true 4.76 100%
Karlee Hormell 9/10 1221 days true 4.75 100%
Lucy Millett 5/10 1223 days true 3.85 81%
Mona Uttendorf 6/10 1224 days true 3.94 83%
Lisa 8/10 1230 days true 4.5 95%
Barbara 10/10 1232 days true 4.73 100%
Menguy Thibault 6/10 1463 days true 3.55 75%
Anna Lerchl 8/10 1488 days true 4.02 85%
Hannes 9/10 1490 days true 4.23 89%
Marlene Buchwald 4/10 1507 days true 3.31 70%
Andreas Schiefer 9/10 1523 days true 4.16 88%
Catharina Cuntz 9/10 1527 days true 4.15 87%
Franziska and Sabine 7/10 1534 days true 3.77 79%
Thomas and Katia 6/10 1567 days true 3.38 71%
Michal Kamradek 7/10 1927 days true 3.07 65%
Jutta Bernhart 6/10 1940 days true 2.78 58%
Richard 7/10 2101 days 2.76 58%
Ondrej Stepanek 3/10 2192 days true 2.2 46%
Boneschova Jarka 7/10 2192 days true 2.6 55%
Jakub Stastny 4/10 2193 days true 2.25 47%
Granjon 8/10 2224 days true 2.65 56%
Miriam Grund 9/10 2227 days true 2.78 59%
Philip Donachie 8/10 2239 days true 2.62 55%
Max Tetzlaff 8/10 2249 days true 2.6 55%
Elise Boinnot 9/10 2250 days true 2.74 58%
Thomas Dequidt 7/10 2250 days true 2.49 52%
Claudia 7/10 2260 days true 2.48 52%
Bertrand Gilles 4/10 2570 days true 1.67 35%
Clodec 8/10 2583 days true 1.98 42%
ToGy 1/10 2953 days 1.0 21%
Slangen 7/10 2975 days true 1.2 25%
katel86 8/10 3135 days 0.96 20%
Johnno25 7/10 3197 days 0.81 17%
rgoodwi3 10/10 3227 days 0.83 17%
Alice Bastiman 5/10 3296 days true 0.56 12%
Natalie Maguire 9/10 3302 days true 0.68 14%
Andreas Rath 4/10 3304 days true 0.53 11%
Nikolas Woelzel 3/10 3321 days true 0.5 10%
Adam Hayley 4/10 3331 days true 0.49 10%
Ines 8/10 3334 days true 0.59 12%
Derek Archibald 7/10 3340 days true 0.55 12%
Andrew Hammond 8/10 3470 days 0.33 7%
Matt Roper 8/10 3675 days true 0.0 0%
M and H Lunn 7/10 3693 days true 0.0 0%
Dersiree Moerbeek 6/10 3710 days true 0.0 0%
Bram-Jan M 8/10 3711 days true 0.0 0%
Sebastien Briant 4/10 3711 days true 0.0 0%
Coby Aalbrecht 8/10 3711 days true 0.0 0%
Wolfgang G 9/10 3718 days true 0.0 0%
J P Paulvast 8/10 3726 days true 0.0 0%
Jorrit Bust 7/10 3726 days true 0.0 0%
_mel_ 5/10 3743 days 0.0 0%
robineth 4/10 3767 days true 0.0 0%
Mark Piche 7/10 3823 days true 0.0 0%
KYinNZ 6/10 3927 days 0.0 0%
KatieR 8/10 4016 days true 0.0 0%
Andrew 9/10 4018 days 0.0 0%
gerhardm 6/10 4018 days true 0.0 0%
PeteH1 6/10 4034 days true 0.0 0%
AliR 5/10 4034 days true 0.0 0%
Nick 9/10 4034 days true 0.0 0%
Andreas 7/10 4090 days true 0.0 0%
Katherine 7/10 4123 days true 0.0 0%
Claire 7/10 4131 days true 0.0 0%

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

-3.98% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 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 199 days.

The Craters of the Moon experience has been adjusted for 199 days. Adjustments are according to the following table.

Days Adjustment
196 -3.92%
197 -3.94%
198 -3.96%
199 -3.98%
200 -4.00%
201 -4.02%
202 -4.04%

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.