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

87.28%

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 Face-to-Face Weight Relative Weight
Alex Ehret 10/10 1009 days true 6.17 100%
Elke Paul 10/10 1009 days true 6.17 100%
Felix Mayer 7/10 1041 days true 4.97 80%
Bram Hoonhout 9/10 1057 days true 5.23 84%
Maarten 8/10 1064 days true 4.89 78%
Anna 8/10 1067 days true 4.87 78%
Jean Charlies Coudray 10/10 1068 days true 5.12 82%
Dylan McBride 9/10 1099 days true 4.99 80%
Meghan Maloney 9/10 1113 days 4.97 80%
Stan 9/10 1324 days true 4.61 74%
Alexandre Roche 7/10 1325 days true 4.19 67%
Diane Toupaine 5/10 1325 days true 3.73 59%
Laura Harmon 10/10 1337 days true 4.59 73%
Peter Hodgson 9/10 1362 days true 4.54 73%
James Webster 8/10 1657 days 3.84 61%
Karen Garvin 6/10 2029 days true 2.82 44%
Alexander Zimmer 10/10 2064 days true 3.34 52%
Lena Wacker 9/10 2070 days true 3.33 52%
Rena and Kirsten 9/10 2528 days true 2.55 39%
Krataihai 9/10 2758 days 2.15 32%
Laura vanGool 9/10 2774 days true 2.13 32%
Jaroslav Gajdos 10/10 2792 days true 2.09 31%
Judith Fowler 9/10 2804 days true 2.07 31%
David & Sue Lokkerbol 9/10 2804 days true 2.07 31%
Andre Jean 9/10 2811 days true 2.06 31%
GenH 7/10 3094 days 1.44 20%
Fredrik Thornell 9/10 3145 days true 1.49 21%
Daryl 8/10 3148 days true 1.41 20%
Caroline & Jochen 10/10 3175 days true 1.44 20%
Robert Haidt 10/10 3176 days true 1.44 20%
eric14 9/10 3701 days 0.54 5%
bogaard 9/10 3736 days true 0.48 4%
DustyLaptop 9/10 3793 days 0.38 2%
Sofie 9/10 3824 days 0.33 1%
James O'Neil 10/10 3874 days true 0.24 0%

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.