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 Tasman Glacier Lake walk.

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

Tasman Glacier Lake walk

Valid Reviews

35 Valid Reviews

The Tasman Glacier Lake walk experience has a total of 35 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 35 valid reviews:

Rating Count Percentage
10/10 9
26%
9/10 17
49%
8/10 4
11%
7/10 3
9%
6/10 1
3%
5/10 1
3%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

87.71% Average

The raw data average (mean) for all the Tasman Glacier Lake walk valid reviews is 87.71% and is based on 35 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

28 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 35 valid reviews, the experience has 28 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 28 face-to-face reviews:

Rating Count Percentage
10/10 9
32%
9/10 12
43%
8/10 3
11%
7/10 2
7%
6/10 1
4%
5/10 1
4%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

88.21% Average

The raw data average (mean) for all the Tasman Glacier Lake walk face-to-face reviews is 88.21% and is based on 28 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

87.06%

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
Alex Ehret 10/10 1583 days 100%
Elke Paul 10/10 1583 days 100%
Felix Mayer 7/10 1615 days 88%
Bram Hoonhout 9/10 1631 days 97%
Maarten 8/10 1638 days 91%
Anna 8/10 1641 days 91%
Jean Charlies Coudray 10/10 1642 days 97%
Dylan McBride 9/10 1673 days 95%
Meghan Maloney 9/10 1687 days 94%
Stan 9/10 1898 days 83%
Alexandre Roche 7/10 1899 days 74%
Diane Toupaine 5/10 1899 days 64%
Laura Harmon 10/10 1911 days 82%
Peter Hodgson 9/10 1936 days 80%
James Webster 8/10 2231 days 60%
Karen Garvin 6/10 2603 days 34%
Alexander Zimmer 10/10 2638 days 41%
Lena Wacker 9/10 2644 days 41%
Rena and Kirsten 9/10 3102 days 16%
Krataihai 9/10 3332 days 3%
Laura vanGool 9/10 3348 days 2%
Jaroslav Gajdos 10/10 3366 days 1%
Judith Fowler 9/10 3378 days 0%
David & Sue Lokkerbol 9/10 3378 days 0%
Andre Jean 9/10 3385 days 0%
GenH 7/10 3668 days 11%
Fredrik Thornell 9/10 3719 days 14%
Daryl 8/10 3722 days 12%
Caroline & Jochen 10/10 3749 days 14%
Robert Haidt 10/10 3750 days 14%
eric14 9/10 4275 days 14%
bogaard 9/10 4310 days 14%
DustyLaptop 9/10 4367 days 14%
Sofie 9/10 4398 days 14%
James O'Neil 10/10 4448 days 14%

Adjustments

No Adjustment

Several adjustments to the weighted average may be added to improve relevancy and credibility. Tasman Glacier Lake walk does not meet the criteria for any of these adjustments to apply.

Final Ranking Score

87%

The final ranking score once 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.