Hey, 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 info@rankers.co.nz. We don't believe this is perfect or complete so we're always interested in ways we might make improvements.
91 Valid Reviews
The Waitangi Treaty Grounds experience has a total of 91 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 91 valid reviews:
Rating | Count | Percentage | |
---|---|---|---|
10/10 | 19 |
|
21% |
9/10 | 23 |
|
25% |
8/10 | 25 |
|
27% |
7/10 | 11 |
|
12% |
6/10 | 3 |
|
3% |
5/10 | 7 |
|
8% |
4/10 | 1 |
|
1% |
3/10 | 1 |
|
1% |
2/10 | 0 |
|
0% |
1/10 | 1 |
|
1% |
80.77% Average
The raw data average (mean) for all the Waitangi Treaty Grounds valid reviews is 80.77% and is based on 91 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.
More about face-to-face reviews
Within the 91 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:
Rating | Count | Percentage | |
---|---|---|---|
10/10 | 11 |
|
15% |
9/10 | 21 |
|
29% |
8/10 | 20 |
|
27% |
7/10 | 10 |
|
14% |
6/10 | 3 |
|
4% |
5/10 | 6 |
|
8% |
4/10 | 1 |
|
1% |
3/10 | 1 |
|
1% |
2/10 | 0 |
|
0% |
1/10 | 0 |
|
0% |
80.00% Average
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.
90.33%
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 |
---|---|---|---|
Chel | 8/10 | 202 days | 100% |
Valerie V | 10/10 | 476 days | 91% |
Cam | 10/10 | 476 days | 91% |
Penny Bullock | 10/10 | 2272 days | 4% |
Nigel Jarvis | 10/10 | 2333 days | 4% |
Janneke van Krieken | 8/10 | 2666 days | 3% |
William Milligan-Manby | 10/10 | 2806 days | 3% |
dan dalgleish | 10/10 | 2912 days | 3% |
Melanie Farrell | 9/10 | 2921 days | 3% |
Charlotte | 8/10 | 2948 days | 3% |
Vicki Robey | 8/10 | 3012 days | 3% |
Michal Za'heryuk | 9/10 | 3032 days | 3% |
Veronika Za'heryuk | 9/10 | 3032 days | 3% |
Thomas Nolwenn | 9/10 | 3037 days | 3% |
Manibod Vannaphone | 10/10 | 3274 days | 2% |
Luca Staudt | 7/10 | 3277 days | 2% |
Nancy Logan | 8/10 | 3281 days | 2% |
Friederike East | 9/10 | 3302 days | 2% |
Sabine Bergen | 8/10 | 3319 days | 2% |
Ken | 5/10 | 3633 days | 1% |
Fanny DeBon | 7/10 | 3731 days | 1% |
Ian Garner | 9/10 | 4021 days | 1% |
Laurene | 5/10 | 4028 days | 1% |
Guillaume | 6/10 | 4032 days | 1% |
Sarah Horn | 9/10 | 4361 days | 0% |
Sebastian Russell-Smits | 10/10 | 4361 days | 0% |
Leo | 9/10 | 4467 days | 1% |
Reinhard Stahl | 10/10 | 4468 days | 1% |
Reinhard Stahl | 10/10 | 4468 days | 1% |
Liz Marquart Scholtz | 8/10 | 4474 days | 1% |
Kerstin | 9/10 | 4478 days | 1% |
KDS_Holiday | 10/10 | 4524 days | 1% |
Mark Westebring | 7/10 | 4725 days | 1% |
ToGy | 1/10 | 4738 days | 0% |
Barry Baily | 9/10 | 4751 days | 1% |
Charlotte | 9/10 | 4753 days | 1% |
John Reynolds | 10/10 | 4762 days | 1% |
Ellen Jacobs | 5/10 | 4765 days | 1% |
Peter, Noelle & Susanne | 6/10 | 4832 days | 1% |
damaca | 7/10 | 4890 days | 1% |
Oliver Berg | 7/10 | 5087 days | 1% |
Boi Sagarra | 6/10 | 5087 days | 1% |
Chris Ashton | 8/10 | 5098 days | 1% |
Edgar & Marilyn Berry | 10/10 | 5100 days | 1% |
John Taylor | 10/10 | 5103 days | 1% |
Ann Parry | 9/10 | 5108 days | 1% |
Peter | 9/10 | 5109 days | 1% |
David | 9/10 | 5122 days | 1% |
Rossiter | 7/10 | 5125 days | 1% |
Rosey834 | 8/10 | 5194 days | 1% |
Hans | 8/10 | 5459 days | 1% |
Michael Egli | 9/10 | 5460 days | 1% |
Aaron | 5/10 | 5479 days | 1% |
Mieke Knoops | 7/10 | 5479 days | 1% |
Tonny | 8/10 | 5496 days | 1% |
snodge | 5/10 | 5497 days | 1% |
uleugel | 8/10 | 5506 days | 1% |
Len Daniell | 9/10 | 5511 days | 1% |
kevinp | 7/10 | 5540 days | 1% |
Anita de Boer | 8/10 | 5561 days | 1% |
Karin Linder | 9/10 | 5563 days | 1% |
richardh | 8/10 | 5684 days | 1% |
Christine Dadd | 4/10 | 5791 days | 1% |
MorganK | 8/10 | 5795 days | 1% |
arthurwa | 10/10 | 5803 days | 1% |
Robert | 5/10 | 5826 days | 1% |
KeziaB | 9/10 | 5836 days | 1% |
EleanorL | 7/10 | 5836 days | 1% |
VickiS | 7/10 | 5836 days | 1% |
Ian S | 8/10 | 5852 days | 1% |
MartinD | 8/10 | 5861 days | 1% |
straw64 | 8/10 | 5862 days | 1% |
Mark | 3/10 | 5875 days | 1% |
Debbie Mossman | 8/10 | 5878 days | 1% |
Miranda | 8/10 | 5879 days | 1% |
Kern | 7/10 | 5888 days | 1% |
Sandra | 8/10 | 5916 days | 1% |
bobmcg | 9/10 | 5916 days | 1% |
Bert | 8/10 | 5921 days | 1% |
Robin | 8/10 | 5993 days | 1% |
Annabelle | 10/10 | 6012 days | 1% |
Heckter | 9/10 | 6174 days | 1% |
Amy Clark | 10/10 | 6174 days | 1% |
Claire | 8/10 | 6189 days | 1% |
Roger and Heather Smith | 10/10 | 6208 days | 1% |
Ondrej Kacena | 10/10 | 6214 days | 1% |
Roger & Margaret | 9/10 | 6217 days | 1% |
purplekat99 | 9/10 | 6259 days | 1% |
AndiJorgensen | 5/10 | 6526 days | 1% |
Rietveld | 8/10 | 6561 days | 1% |
Pope | 9/10 | 6580 days | 1% |
Several adjustments to the weighted average are added to improve relevancy and credibility. These adjustments apply equally to all experiences that meet the criteria.
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 Waitangi Treaty Grounds experience has plenty of reviews and does not meet the criteria for any adjustment.
-3.65% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 53 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 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.
The Waitangi Treaty Grounds experience has been adjusted for 176 days. Adjustments are according to the following table.
Days | Adjustment |
---|---|
… | … |
173 | -3.59% |
174 | -3.61% |
175 | -3.63% |
176 | -3.65% |
177 | -3.67% |
178 | -3.69% |
179 | -3.71% |
… | … |
1.51% Adjustment
Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.
You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.
We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.
88%
The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.