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 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.

Nick Morrison's avatar

Nick Morrison

Rankers owner

The Antarctic Attraction

Valid Reviews

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.

Face-to-Face Reviews

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.

Weighted Average

74.43%

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 1760 days 100%
Per Bang 8/10 1793 days 98%
Bernd Giermann 8/10 1837 days 96%
Dubrulle 9/10 1865 days 99%
Mary Tan 10/10 1906 days 97%
Gavin Moffatt 9/10 2128 days 85%
Lars Schuett 10/10 2194 days 81%
Matt Lohmeyer 8/10 2211 days 76%
Thomas Stuber 7/10 2233 days 72%
Angela Neville 5/10 2919 days 33%
Neil Beckett 5/10 3217 days 19%
Paul Kelly 5/10 3429 days 10%
peterpiper 10/10 3552 days 5%
Kimothy 8/10 3582 days 3%
Delore 4/10 3606 days 1%
Lorna Williams 7/10 3608 days 2%
David & Sue Lokkerbol 7/10 3628 days 1%
Thyg Lingdal 9/10 3641 days 0%
Jerryusa57 10/10 3642 days 0%
pauls1892 10/10 3642 days 0%
qofd 6/10 3918 days 23%
Jeff Cerjan 8/10 3986 days 27%
Andrew Hammond 7/10 4130 days 26%
Lloyd Shephard 8/10 4334 days 27%
Arnold 8/10 4335 days 27%
hughesW 8/10 4344 days 27%
Chance McGuire 10/10 4372 days 28%
Peter Ortner 8/10 4381 days 27%
Buss 7/10 4385 days 26%
Chung Family 6/10 4392 days 23%
middendorp 5/10 4418 days 23%
alasiac 8/10 4434 days 27%
Deede K 9/10 4442 days 28%
Bruce_M 1/10 4525 days 20%
andriesk 5/10 4560 days 23%
joevw 3/10 4633 days 22%
Johnnie 8/10 4659 days 27%
pattie 1/10 4678 days 20%
MarkP 8/10 4678 days 27%
Sally477 7/10 4679 days 26%
VenesJ 7/10 4698 days 26%
Jan 6/10 4708 days 23%
CharlotteC 8/10 4713 days 27%
kate Smith 2/10 4729 days 21%
Rory 4/10 4740 days 22%
Jan 7/10 4742 days 26%
max deloare 2/10 4752 days 21%
Debbie Mossman 5/10 4753 days 23%
stueug 9/10 4828 days 28%
Ken 10/10 4844 days 28%
Sam Prior 3/10 4893 days 22%
Mark Coffey 2/10 4921 days 21%
fgregory 8/10 4940 days 27%
Lorraine Wallis 9/10 5044 days 28%
Chrysa Charitou 9/10 5044 days 28%
Teresa Wallis 9/10 5044 days 28%
Nicole 8/10 5061 days 27%
Orla Hansen 10/10 5070 days 28%
Paul McDonell 8/10 5070 days 27%
Rebekah Holbrook 9/10 5106 days 28%
Simon Chettleburgh 7/10 5106 days 26%
Aske Helbor 3/10 5121 days 22%
ranker_734 5/10 5121 days 23%
Rene Schotvanger 7/10 5280 days 26%
Andy 6/10 5450 days 23%
Sandra 5/10 5450 days 23%
Dave 9/10 5455 days 28%

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 The Antarctic Attraction experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.11% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 47 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 -4.04%
198 -4.07%
199 -4.09%
200 -4.11%
201 -4.13%
202 -4.15%
203 -4.17%

Final Ranking Score

70%

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.