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 Blue Lakes and Tasman Glacier Walks.

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

Blue Lakes and Tasman Glacier Walks

Valid Reviews

22 Valid Reviews

The Blue Lakes and Tasman Glacier Walks experience has a total of 23 reviews. There are 22 valid reviews that are included when calculating the ranking score and 1 invalid review 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 22 valid reviews:

Rating Count Percentage
10/10 8
36%
9/10 5
23%
8/10 6
27%
7/10 1
5%
6/10 1
5%
5/10 1
5%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

86.82% Average

The raw data average (mean) for all the Blue Lakes and Tasman Glacier Walks valid reviews is 86.82% and is based on 22 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

18 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 22 valid reviews, the experience has 18 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 18 face-to-face reviews:

Rating Count Percentage
10/10 7
39%
9/10 4
22%
8/10 5
28%
7/10 1
6%
6/10 1
6%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

88.33% Average

The raw data average (mean) for all the Blue Lakes and Tasman Glacier Walks face-to-face reviews is 88.33% and is based on 18 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

95.43%

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 Face-to-Face Weight Relative Weight
Raphaele 10/10 175 days 95.15 100%
Romy de Boer 10/10 565 days true 59.41 62%
Rick Stockdale 10/10 827 days true 19.66 19%
Kathi 10/10 1188 days true 5.85 4%
Suzanne Vermeulen 8/10 1301 days 4.72 3%
James Webster 5/10 1509 days 4.43 3%
Sue Strebe 7/10 1564 days true 5.23 3%
Nora Zeitz 9/10 1969 days true 4.56 3%
jessica newton 9/10 2245 days 3.42 1%
Marcel 6/10 2269 days true 4.07 2%
Peter Moederer 10/10 2293 days true 4.03 2%
Delore 8/10 2634 days true 3.47 2%
Sabrina Germany 8/10 2636 days true 3.47 1%
Linda Kosters 9/10 2650 days true 3.44 1%
Barrie Corless 9/10 2669 days true 3.41 1%
Maggie Leyland 8/10 2997 days true 2.87 1%
Marco Schoeggl 8/10 3009 days true 2.85 1%
Ian Watson 10/10 3373 days true 2.26 0%
Gunda G 10/10 3380 days true 2.24 0%
Conor Coyle 9/10 3417 days true 2.18 0%
X Vogel 8/10 3472 days true 2.09 0%
Gemma Morris 10/10 3485 days true 2.07 0%

Adjustments

No Adjustment

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

Final Ranking Score

95%

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.

Love Christchurch