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 Waitangi Treaty Grounds.
If you have any questions or comments about our ranking score calculation please get in touch at email@example.com. We don't believe this is perfect or complete so we're always interested in ways we might make improvements.
88 Valid Reviews
The Waitangi Treaty Grounds experience has a total of 88 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 88 valid reviews:
The raw data average (mean) for all the Waitangi Treaty Grounds valid reviews is 80.34% and is based on 88 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.
73 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.
Within the 88 valid reviews, the experience has 73 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 73 face-to-face reviews:
The raw data average (mean) for all the Waitangi Treaty Grounds face-to-face reviews is 80.00% and is based on 73 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
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.
|Penny Bullock||10/10||453 days||67.48||100%|
|Nigel Jarvis||10/10||514 days||58.14||86%|
|Janneke van Krieken||8/10||847 days||14.01||21%|
|William Milligan-Manby||10/10||987 days||6.85||10%|
|dan dalgleish||10/10||1093 days||5.0||7%|
|Melanie Farrell||9/10||1102 days||4.99||7%|
|Vicki Robey||8/10||1193 days||4.57||7%|
|Michal Za'heryuk||9/10||1213 days||4.77||7%|
|Veronika Za'heryuk||9/10||1213 days||4.77||7%|
|Thomas Nolwenn||9/10||1218 days||4.76||7%|
|Manibod Vannaphone||10/10||1455 days||4.3||6%|
|Luca Staudt||7/10||1458 days||3.9||6%|
|Nancy Logan||8/10||1462 days||4.07||6%|
|Friederike East||9/10||1483 days||4.24||6%|
|Sabine Bergen||8/10||1500 days||4.0||6%|
|Fanny DeBon||7/10||1912 days||3.1||5%|
|Ian Garner||9/10||2202 days||2.83||4%|
|Sarah Horn||9/10||2542 days||2.17||3%|
|Sebastian Russell-Smits||10/10||2542 days||2.17||3%|
|Reinhard Stahl||10/10||2649 days||1.96||3%|
|Reinhard Stahl||10/10||2649 days||1.96||3%|
|Liz Marquart Scholtz||8/10||2655 days||1.85||3%|
|Mark Westebring||7/10||2906 days||1.32||2%|
|Barry Baily||9/10||2932 days||1.41||2%|
|John Reynolds||10/10||2943 days||1.38||2%|
|Ellen Jacobs||5/10||2946 days||1.12||2%|
|Peter, Noelle & Susanne||6/10||3013 days||1.03||2%|
|Oliver Berg||7/10||3268 days||0.68||1%|
|Boi Sagarra||6/10||3268 days||0.62||1%|
|Chris Ashton||8/10||3279 days||0.69||1%|
|Edgar & Marilyn Berry||10/10||3281 days||0.72||1%|
|John Taylor||10/10||3284 days||0.72||1%|
|Ann Parry||9/10||3289 days||0.71||1%|
|Michael Egli||9/10||3641 days||0.02||0%|
|Mieke Knoops||7/10||3660 days||0.0||0%|
|Len Daniell||9/10||3692 days||0.0||0%|
|Anita de Boer||8/10||3742 days||0.0||0%|
|Karin Linder||9/10||3744 days||0.0||0%|
|Christine Dadd||4/10||3972 days||0.0||0%|
|Ian S||8/10||4034 days||0.0||0%|
|Debbie Mossman||8/10||4059 days||0.0||0%|
|Amy Clark||10/10||4355 days||0.0||0%|
|Roger and Heather Smith||10/10||4389 days||0.0||0%|
|Ondrej Kacena||10/10||4395 days||0.0||0%|
|Roger & Margaret||9/10||4398 days||0.0||0%|
Several adjustments to the weighted average are added to improve relevancy and credibility. These adjustments apply equally to all experiences that meet the criteria.
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 Waitangi Treaty Grounds experience has plenty of reviews and does not meet the criteria for any adjustment.
There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Waitangi Treaty Grounds 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 199 days.
The Waitangi Treaty Grounds experience has been adjusted for 199 days. Adjustments are according to the following table.
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 firstname.lastname@example.org.