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

73.35%

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 1259 days true 4.26 93%
Connor Hormell 10/10 1321 days true 4.56 100%
Karlee Hormell 9/10 1322 days true 4.56 100%
Lucy Millett 5/10 1324 days true 3.69 81%
Mona Uttendorf 6/10 1325 days true 3.78 83%
Lisa 8/10 1331 days true 4.31 95%
Barbara 10/10 1333 days true 4.53 99%
Menguy Thibault 6/10 1564 days true 3.39 74%
Anna Lerchl 8/10 1589 days true 3.83 84%
Hannes 9/10 1591 days true 4.03 88%
Marlene Buchwald 4/10 1608 days true 3.16 69%
Andreas Schiefer 9/10 1624 days true 3.96 87%
Catharina Cuntz 9/10 1628 days true 3.96 87%
Franziska and Sabine 7/10 1635 days true 3.59 79%
Thomas and Katia 6/10 1668 days true 3.22 71%
Michal Kamradek 7/10 2028 days true 2.89 63%
Jutta Bernhart 6/10 2041 days true 2.61 57%
Richard 7/10 2202 days 2.58 57%
Ondrej Stepanek 3/10 2293 days true 2.04 45%
Boneschova Jarka 7/10 2293 days true 2.42 53%
Jakub Stastny 4/10 2294 days true 2.1 46%
Granjon 8/10 2325 days true 2.46 54%
Miriam Grund 9/10 2328 days true 2.59 57%
Philip Donachie 8/10 2340 days true 2.44 53%
Max Tetzlaff 8/10 2350 days true 2.42 53%
Elise Boinnot 9/10 2351 days true 2.54 56%
Thomas Dequidt 7/10 2351 days true 2.31 51%
Claudia 7/10 2361 days true 2.3 50%
Bertrand Gilles 4/10 2671 days true 1.51 33%
Clodec 8/10 2684 days true 1.8 39%
ToGy 1/10 3054 days 0.85 19%
Slangen 7/10 3076 days true 1.02 22%
katel86 8/10 3236 days 0.77 17%
Johnno25 7/10 3298 days 0.63 14%
rgoodwi3 10/10 3328 days 0.63 14%
Alice Bastiman 5/10 3397 days true 0.4 9%
Natalie Maguire 9/10 3403 days true 0.48 11%
Andreas Rath 4/10 3405 days true 0.38 8%
Nikolas Woelzel 3/10 3422 days true 0.34 8%
Adam Hayley 4/10 3432 days true 0.34 7%
Ines 8/10 3435 days true 0.4 9%
Derek Archibald 7/10 3441 days true 0.37 8%
Andrew Hammond 8/10 3571 days 0.15 3%
Matt Roper 8/10 3776 days true 0.0 0%
M and H Lunn 7/10 3794 days true 0.0 0%
Dersiree Moerbeek 6/10 3811 days true 0.0 0%
Bram-Jan M 8/10 3812 days true 0.0 0%
Sebastien Briant 4/10 3812 days true 0.0 0%
Coby Aalbrecht 8/10 3812 days true 0.0 0%
Wolfgang G 9/10 3819 days true 0.0 0%
J P Paulvast 8/10 3827 days true 0.0 0%
Jorrit Bust 7/10 3827 days true 0.0 0%
_mel_ 5/10 3844 days 0.0 0%
robineth 4/10 3868 days true 0.0 0%
Mark Piche 7/10 3924 days true 0.0 0%
KYinNZ 6/10 4028 days 0.0 0%
KatieR 8/10 4117 days true 0.0 0%
Andrew 9/10 4119 days 0.0 0%
gerhardm 6/10 4119 days true 0.0 0%
PeteH1 6/10 4135 days true 0.0 0%
AliR 5/10 4135 days true 0.0 0%
Nick 9/10 4136 days true 0.0 0%
Andreas 7/10 4191 days true 0.0 0%
Katherine 7/10 4224 days true 0.0 0%
Claire 7/10 4232 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

-2.00% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 125 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 -1.97%
198 -1.98%
199 -1.99%
200 -2.00%
201 -2.01%
202 -2.02%
203 -2.03%

Final Ranking Score

71%

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.