Hi, 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.
68.80%
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 | 1347 days | 100% |
Michael Bley | 7/10 | 2870 days | 23% |
Connor Hormell | 10/10 | 2932 days | 23% |
Karlee Hormell | 9/10 | 2933 days | 23% |
Lucy Millett | 5/10 | 2935 days | 17% |
Mona Uttendorf | 6/10 | 2936 days | 20% |
Lisa | 8/10 | 2942 days | 23% |
Barbara | 10/10 | 2944 days | 23% |
Menguy Thibault | 6/10 | 3175 days | 16% |
Anna Lerchl | 8/10 | 3200 days | 18% |
Hannes | 9/10 | 3202 days | 19% |
Marlene Buchwald | 4/10 | 3219 days | 12% |
Andreas Schiefer | 9/10 | 3235 days | 18% |
Catharina Cuntz | 9/10 | 3239 days | 18% |
Franziska and Sabine | 7/10 | 3246 days | 17% |
Thomas and Katia | 6/10 | 3279 days | 15% |
Michal Kamradek | 7/10 | 3639 days | 11% |
Jutta Bernhart | 6/10 | 3652 days | 9% |
Richard | 7/10 | 3813 days | 8% |
Ondrej Stepanek | 3/10 | 3904 days | 3% |
Boneschova Jarka | 7/10 | 3904 days | 6% |
Jakub Stastny | 4/10 | 3905 days | 4% |
Granjon | 8/10 | 3936 days | 6% |
Miriam Grund | 9/10 | 3939 days | 6% |
Philip Donachie | 8/10 | 3951 days | 6% |
Max Tetzlaff | 8/10 | 3961 days | 6% |
Elise Boinnot | 9/10 | 3962 days | 6% |
Thomas Dequidt | 7/10 | 3962 days | 5% |
Claudia | 7/10 | 3972 days | 5% |
Bertrand Gilles | 4/10 | 4282 days | 0% |
Clodec | 8/10 | 4295 days | 0% |
ToGy | 1/10 | 4665 days | 2% |
Slangen | 7/10 | 4687 days | 7% |
katel86 | 8/10 | 4847 days | 7% |
Johnno25 | 7/10 | 4909 days | 7% |
rgoodwi3 | 10/10 | 4939 days | 8% |
Alice Bastiman | 5/10 | 5008 days | 5% |
Natalie Maguire | 9/10 | 5014 days | 7% |
Andreas Rath | 4/10 | 5016 days | 5% |
Nikolas Woelzel | 3/10 | 5033 days | 4% |
Adam Hayley | 4/10 | 5043 days | 5% |
Ines | 8/10 | 5046 days | 7% |
Derek Archibald | 7/10 | 5052 days | 7% |
Andrew Hammond | 8/10 | 5182 days | 7% |
Matt Roper | 8/10 | 5387 days | 7% |
M and H Lunn | 7/10 | 5405 days | 7% |
Dersiree Moerbeek | 6/10 | 5422 days | 6% |
Bram-Jan M | 8/10 | 5423 days | 7% |
Sebastien Briant | 4/10 | 5423 days | 5% |
Coby Aalbrecht | 8/10 | 5423 days | 7% |
Wolfgang G | 9/10 | 5430 days | 7% |
J P Paulvast | 8/10 | 5438 days | 7% |
Jorrit Bust | 7/10 | 5438 days | 7% |
_mel_ | 5/10 | 5455 days | 5% |
robineth | 4/10 | 5479 days | 5% |
Mark Piche | 7/10 | 5535 days | 7% |
KYinNZ | 6/10 | 5639 days | 6% |
KatieR | 8/10 | 5728 days | 7% |
Andrew | 9/10 | 5730 days | 7% |
gerhardm | 6/10 | 5730 days | 6% |
PeteH1 | 6/10 | 5746 days | 6% |
AliR | 5/10 | 5746 days | 5% |
Nick | 9/10 | 5746 days | 7% |
Andreas | 7/10 | 5802 days | 7% |
Katherine | 7/10 | 5834 days | 7% |
Claire | 7/10 | 5842 days | 7% |
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.
-4.07% 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% |
… | … |
10.41% 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.