G'day, 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 Antarctic Attraction.
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.
67 Valid Reviews
The The Antarctic Attraction experience has a total of 69 reviews. There are 67 valid reviews that are included when calculating the ranking score and 2 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 67 valid reviews:
Rating | Count | Percentage | |
---|---|---|---|
10/10 | 8 |
|
12% |
9/10 | 10 |
|
15% |
8/10 | 17 |
|
25% |
7/10 | 10 |
|
15% |
6/10 | 4 |
|
6% |
5/10 | 8 |
|
12% |
4/10 | 2 |
|
3% |
3/10 | 3 |
|
4% |
2/10 | 3 |
|
4% |
1/10 | 2 |
|
3% |
69.40% Average
The raw data average (mean) for all the The Antarctic Attraction valid reviews is 69.40% and is based on 67 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.
47 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 67 valid reviews, the experience has 47 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 47 face-to-face reviews:
Rating | Count | Percentage | |
---|---|---|---|
10/10 | 3 |
|
6% |
9/10 | 9 |
|
19% |
8/10 | 14 |
|
30% |
7/10 | 8 |
|
17% |
6/10 | 3 |
|
6% |
5/10 | 5 |
|
11% |
4/10 | 2 |
|
4% |
3/10 | 3 |
|
6% |
2/10 | 0 |
|
0% |
1/10 | 0 |
|
0% |
72.13% Average
The raw data average (mean) for all the The Antarctic Attraction face-to-face reviews is 72.13% and is based on 47 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
76.55%
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 |
---|---|---|---|
Lars Grosse | 8/10 | 2730 days | 100% |
Per Bang | 8/10 | 2763 days | 98% |
Bernd Giermann | 8/10 | 2807 days | 95% |
Dubrulle | 9/10 | 2835 days | 94% |
Mary Tan | 10/10 | 2876 days | 92% |
Gavin Moffatt | 9/10 | 3098 days | 76% |
Lars Schuett | 10/10 | 3164 days | 73% |
Matt Lohmeyer | 8/10 | 3181 days | 70% |
Thomas Stuber | 7/10 | 3203 days | 65% |
Angela Neville | 5/10 | 3889 days | 15% |
Neil Beckett | 5/10 | 4187 days | 0% |
Paul Kelly | 5/10 | 4399 days | 16% |
peterpiper | 10/10 | 4522 days | 25% |
Kimothy | 8/10 | 4552 days | 24% |
Delore | 4/10 | 4576 days | 13% |
Lorna Williams | 7/10 | 4578 days | 22% |
David & Sue Lokkerbol | 7/10 | 4598 days | 22% |
Thyg Lingdal | 9/10 | 4611 days | 24% |
Jerryusa57 | 10/10 | 4612 days | 25% |
pauls1892 | 10/10 | 4612 days | 25% |
qofd | 6/10 | 4888 days | 20% |
Jeff Cerjan | 8/10 | 4956 days | 24% |
Andrew Hammond | 7/10 | 5100 days | 22% |
Lloyd Shephard | 8/10 | 5304 days | 24% |
Arnold | 8/10 | 5305 days | 24% |
hughesW | 8/10 | 5314 days | 24% |
Chance McGuire | 10/10 | 5342 days | 25% |
Peter Ortner | 8/10 | 5351 days | 24% |
Buss | 7/10 | 5355 days | 22% |
Chung Family | 6/10 | 5362 days | 20% |
middendorp | 5/10 | 5388 days | 16% |
alasiac | 8/10 | 5404 days | 24% |
Deede K | 9/10 | 5412 days | 24% |
Bruce_M | 1/10 | 5495 days | 4% |
andriesk | 5/10 | 5530 days | 16% |
joevw | 3/10 | 5603 days | 9% |
Johnnie | 8/10 | 5629 days | 24% |
pattie | 1/10 | 5648 days | 4% |
MarkP | 8/10 | 5648 days | 24% |
Sally477 | 7/10 | 5649 days | 22% |
VenesJ | 7/10 | 5668 days | 22% |
Jan | 6/10 | 5678 days | 20% |
CharlotteC | 8/10 | 5683 days | 24% |
kate Smith | 2/10 | 5699 days | 6% |
Rory | 4/10 | 5710 days | 13% |
Jan | 7/10 | 5712 days | 22% |
max deloare | 2/10 | 5722 days | 6% |
Debbie Mossman | 5/10 | 5723 days | 16% |
stueug | 9/10 | 5798 days | 24% |
Ken | 10/10 | 5815 days | 25% |
Sam Prior | 3/10 | 5863 days | 9% |
Mark Coffey | 2/10 | 5891 days | 6% |
fgregory | 8/10 | 5910 days | 24% |
Lorraine Wallis | 9/10 | 6014 days | 24% |
Chrysa Charitou | 9/10 | 6014 days | 24% |
Teresa Wallis | 9/10 | 6014 days | 24% |
Nicole | 8/10 | 6031 days | 24% |
Orla Hansen | 10/10 | 6040 days | 25% |
Paul McDonell | 8/10 | 6040 days | 24% |
Rebekah Holbrook | 9/10 | 6076 days | 24% |
Simon Chettleburgh | 7/10 | 6076 days | 22% |
Aske Helbor | 3/10 | 6091 days | 9% |
ranker_734 | 5/10 | 6091 days | 16% |
Rene Schotvanger | 7/10 | 6250 days | 22% |
Andy | 6/10 | 6420 days | 20% |
Sandra | 5/10 | 6420 days | 16% |
Dave | 9/10 | 6425 days | 24% |
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 Antarctic Attraction experience has plenty of reviews and does not meet the criteria for any adjustment.
-2.98% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 76 days. However the The Antarctic Attraction 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 Antarctic Attraction experience has been adjusted for 200 days. Adjustments are according to the following table.
Days | Adjustment |
---|---|
… | … |
197 | -2.94% |
198 | -2.95% |
199 | -2.97% |
200 | -2.98% |
201 | -3.00% |
202 | -3.01% |
203 | -3.03% |
… | … |
5.24% 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.
79%
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.