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 The OPERA.
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.
61 Valid Reviews
The The OPERA experience has a total of 61 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 61 valid reviews:
Rating | Count | Percentage | |
---|---|---|---|
10/10 | 24 |
|
39% |
9/10 | 15 |
|
25% |
8/10 | 14 |
|
23% |
7/10 | 3 |
|
5% |
6/10 | 1 |
|
2% |
5/10 | 1 |
|
2% |
4/10 | 2 |
|
3% |
3/10 | 0 |
|
0% |
2/10 | 1 |
|
2% |
1/10 | 0 |
|
0% |
86.72% Average
The raw data average (mean) for all the The OPERA valid reviews is 86.72% and is based on 61 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.
52 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 61 valid reviews, the experience has 52 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 52 face-to-face reviews:
Rating | Count | Percentage | |
---|---|---|---|
10/10 | 18 |
|
35% |
9/10 | 13 |
|
25% |
8/10 | 14 |
|
27% |
7/10 | 3 |
|
6% |
6/10 | 0 |
|
0% |
5/10 | 1 |
|
2% |
4/10 | 2 |
|
4% |
3/10 | 0 |
|
0% |
2/10 | 1 |
|
2% |
1/10 | 0 |
|
0% |
85.58% Average
The raw data average (mean) for all the The OPERA face-to-face reviews is 85.58% and is based on 52 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
87.93%
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 |
---|---|---|---|
Antony Wilson | 10/10 | 2483 days | 100% |
Dorothy and Graham Glen | 10/10 | 2632 days | 92% |
Lars Grosse | 10/10 | 2853 days | 80% |
Harald Ludtke | 4/10 | 2872 days | 51% |
Rob and Nicole | 8/10 | 2902 days | 76% |
Elke Paul | 10/10 | 2926 days | 76% |
Chloe | 5/10 | 3302 days | 42% |
Corinna Fallenbuchel | 8/10 | 3686 days | 35% |
Richard | 10/10 | 3854 days | 26% |
Julie Robinson | 10/10 | 3991 days | 19% |
Ene Pold | 9/10 | 3998 days | 18% |
Andrea Hiemer | 10/10 | 4011 days | 18% |
Claudia | 10/10 | 4038 days | 16% |
Jill Fischer | 9/10 | 4341 days | 0% |
Jim and JoAnn Harllee | 8/10 | 4437 days | 25% |
Brasier | 9/10 | 4712 days | 25% |
Melanie Mathiak | 10/10 | 4718 days | 25% |
Domroes | 10/10 | 4727 days | 25% |
Carel | 8/10 | 4732 days | 25% |
Herbert | 10/10 | 4748 days | 25% |
JBunn | 10/10 | 4766 days | 25% |
Dorthe | 2/10 | 4798 days | 10% |
Helle Thomsen | 10/10 | 4813 days | 25% |
Henrick Lund | 8/10 | 5059 days | 25% |
Marcel Camsch | 9/10 | 5064 days | 25% |
LandJ | 6/10 | 5072 days | 22% |
Bert Opdam | 9/10 | 5082 days | 25% |
Marieke and Bert-Jan | 9/10 | 5088 days | 25% |
Jackie Morris | 9/10 | 5091 days | 25% |
Montys | 10/10 | 5223 days | 25% |
Marcia & Bruce | 8/10 | 5427 days | 25% |
Ingrid Zell | 8/10 | 5428 days | 25% |
Marcus Kippner | 9/10 | 5428 days | 25% |
John Helle | 7/10 | 5458 days | 24% |
Harmann Volker | 8/10 | 5459 days | 25% |
Chidlebyte | 10/10 | 5465 days | 25% |
Jessica | 7/10 | 5470 days | 24% |
E.M. Prideaux | 10/10 | 5479 days | 25% |
Jennifer Templeton | 9/10 | 5482 days | 25% |
sels | 10/10 | 5527 days | 25% |
Decuq | 8/10 | 5538 days | 25% |
Suzanne | 9/10 | 5588 days | 25% |
Thomas1646 | 10/10 | 5778 days | 25% |
Frank | 10/10 | 5788 days | 25% |
Max | 10/10 | 5790 days | 25% |
Jana | 10/10 | 5790 days | 25% |
Anton | 4/10 | 5794 days | 16% |
Tolsten | 8/10 | 5813 days | 25% |
Claudia | 9/10 | 5855 days | 25% |
Ria | 9/10 | 6158 days | 25% |
Christian | 8/10 | 6158 days | 25% |
Maria Fahlander | 10/10 | 6161 days | 25% |
Sanne | 8/10 | 6164 days | 25% |
Volders | 9/10 | 6164 days | 25% |
Tessa McCormick | 9/10 | 6168 days | 25% |
Gabriel Faber | 9/10 | 6246 days | 25% |
Schranger | 8/10 | 6508 days | 25% |
Fenke | 7/10 | 6513 days | 24% |
Michaela | 10/10 | 6525 days | 25% |
Berke | 10/10 | 6536 days | 25% |
Rolf Kruger | 8/10 | 6549 days | 25% |
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 The OPERA experience has plenty of reviews and does not meet the criteria for any adjustment.
-4.09% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 46 days. However the The OPERA 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 The OPERA experience has been adjusted for 200 days. Adjustments are according to the following table.
Days | Adjustment |
---|---|
… | … |
197 | -4.03% |
198 | -4.05% |
199 | -4.07% |
200 | -4.09% |
201 | -4.11% |
202 | -4.13% |
203 | -4.15% |
… | … |
2.06% 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.
86%
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.