Kia ora, 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.
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.
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.
69.40%
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 | 1421 days | 100% |
Michael Bley | 7/10 | 2944 days | 28% |
Connor Hormell | 10/10 | 3006 days | 29% |
Karlee Hormell | 9/10 | 3007 days | 28% |
Lucy Millett | 5/10 | 3009 days | 22% |
Mona Uttendorf | 6/10 | 3010 days | 25% |
Lisa | 8/10 | 3016 days | 28% |
Barbara | 10/10 | 3018 days | 28% |
Menguy Thibault | 6/10 | 3249 days | 20% |
Anna Lerchl | 8/10 | 3274 days | 23% |
Hannes | 9/10 | 3276 days | 23% |
Marlene Buchwald | 4/10 | 3293 days | 15% |
Andreas Schiefer | 9/10 | 3309 days | 22% |
Catharina Cuntz | 9/10 | 3313 days | 22% |
Franziska and Sabine | 7/10 | 3320 days | 20% |
Thomas and Katia | 6/10 | 3353 days | 18% |
Michal Kamradek | 7/10 | 3713 days | 13% |
Jutta Bernhart | 6/10 | 3726 days | 12% |
Richard | 7/10 | 3887 days | 9% |
Ondrej Stepanek | 3/10 | 3978 days | 4% |
Boneschova Jarka | 7/10 | 3978 days | 8% |
Jakub Stastny | 4/10 | 3979 days | 5% |
Granjon | 8/10 | 4010 days | 7% |
Miriam Grund | 9/10 | 4013 days | 7% |
Philip Donachie | 8/10 | 4025 days | 7% |
Max Tetzlaff | 8/10 | 4035 days | 7% |
Elise Boinnot | 9/10 | 4036 days | 7% |
Thomas Dequidt | 7/10 | 4036 days | 6% |
Claudia | 7/10 | 4046 days | 6% |
Bertrand Gilles | 4/10 | 4356 days | 0% |
Clodec | 8/10 | 4369 days | 0% |
ToGy | 1/10 | 4739 days | 4% |
Slangen | 7/10 | 4761 days | 10% |
katel86 | 8/10 | 4921 days | 10% |
Johnno25 | 7/10 | 4983 days | 10% |
rgoodwi3 | 10/10 | 5013 days | 10% |
Alice Bastiman | 5/10 | 5082 days | 8% |
Natalie Maguire | 9/10 | 5088 days | 10% |
Andreas Rath | 4/10 | 5090 days | 7% |
Nikolas Woelzel | 3/10 | 5107 days | 6% |
Adam Hayley | 4/10 | 5117 days | 7% |
Ines | 8/10 | 5120 days | 10% |
Derek Archibald | 7/10 | 5126 days | 10% |
Andrew Hammond | 8/10 | 5256 days | 10% |
Matt Roper | 8/10 | 5461 days | 10% |
M and H Lunn | 7/10 | 5479 days | 10% |
Dersiree Moerbeek | 6/10 | 5496 days | 9% |
Bram-Jan M | 8/10 | 5497 days | 10% |
Sebastien Briant | 4/10 | 5497 days | 7% |
Coby Aalbrecht | 8/10 | 5497 days | 10% |
Wolfgang G | 9/10 | 5504 days | 10% |
J P Paulvast | 8/10 | 5512 days | 10% |
Jorrit Bust | 7/10 | 5512 days | 10% |
_mel_ | 5/10 | 5529 days | 8% |
robineth | 4/10 | 5553 days | 7% |
Mark Piche | 7/10 | 5609 days | 10% |
KYinNZ | 6/10 | 5713 days | 9% |
KatieR | 8/10 | 5802 days | 10% |
Andrew | 9/10 | 5804 days | 10% |
gerhardm | 6/10 | 5804 days | 9% |
PeteH1 | 6/10 | 5820 days | 9% |
AliR | 5/10 | 5820 days | 8% |
Nick | 9/10 | 5820 days | 10% |
Andreas | 7/10 | 5876 days | 10% |
Katherine | 7/10 | 5909 days | 10% |
Claire | 7/10 | 5917 days | 10% |
Several adjustments to the weighted average are added to improve relevancy and credibility. These adjustments apply equally to all experiences that meet the criteria.
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.
-4.14% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 53 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 | -4.08% |
198 | -4.10% |
199 | -4.12% |
200 | -4.14% |
201 | -4.16% |
202 | -4.19% |
203 | -4.21% |
… | … |
10.03% Adjustment
Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.
You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.
We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.
75%
The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.