Hi, 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.
Waitangi Treaty Grounds
Valid Reviews
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.
Face-to-Face Reviews
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.
Weighted Average
90.41%
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 | 108 days | 100% |
| Valerie V | 10/10 | 382 days | 94% |
| Cam | 10/10 | 382 days | 94% |
| Penny Bullock | 10/10 | 2178 days | 4% |
| Nigel Jarvis | 10/10 | 2239 days | 4% |
| Janneke van Krieken | 8/10 | 2572 days | 4% |
| William Milligan-Manby | 10/10 | 2712 days | 3% |
| dan dalgleish | 10/10 | 2818 days | 3% |
| Melanie Farrell | 9/10 | 2827 days | 3% |
| Charlotte | 8/10 | 2854 days | 3% |
| Vicki Robey | 8/10 | 2918 days | 3% |
| Michal Za'heryuk | 9/10 | 2938 days | 3% |
| Veronika Za'heryuk | 9/10 | 2938 days | 3% |
| Thomas Nolwenn | 9/10 | 2943 days | 3% |
| Manibod Vannaphone | 10/10 | 3180 days | 2% |
| Luca Staudt | 7/10 | 3183 days | 2% |
| Nancy Logan | 8/10 | 3187 days | 2% |
| Friederike East | 9/10 | 3208 days | 2% |
| Sabine Bergen | 8/10 | 3225 days | 2% |
| Ken | 5/10 | 3539 days | 1% |
| Fanny DeBon | 7/10 | 3637 days | 1% |
| Ian Garner | 9/10 | 3927 days | 1% |
| Laurene | 5/10 | 3934 days | 1% |
| Guillaume | 6/10 | 3938 days | 1% |
| Sarah Horn | 9/10 | 4267 days | 0% |
| Sebastian Russell-Smits | 10/10 | 4267 days | 0% |
| Leo | 9/10 | 4373 days | 0% |
| Reinhard Stahl | 10/10 | 4374 days | 0% |
| Reinhard Stahl | 10/10 | 4374 days | 0% |
| Liz Marquart Scholtz | 8/10 | 4380 days | 1% |
| Kerstin | 9/10 | 4384 days | 1% |
| KDS_Holiday | 10/10 | 4430 days | 1% |
| Mark Westebring | 7/10 | 4631 days | 1% |
| ToGy | 1/10 | 4644 days | 0% |
| Barry Baily | 9/10 | 4657 days | 1% |
| Charlotte | 9/10 | 4659 days | 1% |
| John Reynolds | 10/10 | 4668 days | 1% |
| Ellen Jacobs | 5/10 | 4671 days | 1% |
| Peter, Noelle & Susanne | 6/10 | 4738 days | 1% |
| damaca | 7/10 | 4796 days | 1% |
| Oliver Berg | 7/10 | 4993 days | 1% |
| Boi Sagarra | 6/10 | 4993 days | 1% |
| Chris Ashton | 8/10 | 5004 days | 1% |
| Edgar & Marilyn Berry | 10/10 | 5006 days | 1% |
| John Taylor | 10/10 | 5009 days | 1% |
| Ann Parry | 9/10 | 5014 days | 1% |
| Peter | 9/10 | 5015 days | 1% |
| David | 9/10 | 5028 days | 1% |
| Rossiter | 7/10 | 5031 days | 1% |
| Rosey834 | 8/10 | 5100 days | 1% |
| Hans | 8/10 | 5365 days | 1% |
| Michael Egli | 9/10 | 5366 days | 1% |
| Aaron | 5/10 | 5385 days | 1% |
| Mieke Knoops | 7/10 | 5385 days | 1% |
| Tonny | 8/10 | 5402 days | 1% |
| snodge | 5/10 | 5403 days | 1% |
| uleugel | 8/10 | 5412 days | 1% |
| Len Daniell | 9/10 | 5417 days | 1% |
| kevinp | 7/10 | 5446 days | 1% |
| Anita de Boer | 8/10 | 5467 days | 1% |
| Karin Linder | 9/10 | 5469 days | 1% |
| richardh | 8/10 | 5590 days | 1% |
| Christine Dadd | 4/10 | 5697 days | 1% |
| MorganK | 8/10 | 5701 days | 1% |
| arthurwa | 10/10 | 5709 days | 1% |
| Robert | 5/10 | 5733 days | 1% |
| KeziaB | 9/10 | 5742 days | 1% |
| EleanorL | 7/10 | 5742 days | 1% |
| VickiS | 7/10 | 5742 days | 1% |
| Ian S | 8/10 | 5758 days | 1% |
| MartinD | 8/10 | 5767 days | 1% |
| straw64 | 8/10 | 5768 days | 1% |
| Mark | 3/10 | 5781 days | 1% |
| Debbie Mossman | 8/10 | 5784 days | 1% |
| Miranda | 8/10 | 5786 days | 1% |
| Kern | 7/10 | 5794 days | 1% |
| Sandra | 8/10 | 5822 days | 1% |
| bobmcg | 9/10 | 5822 days | 1% |
| Bert | 8/10 | 5827 days | 1% |
| Robin | 8/10 | 5900 days | 1% |
| Annabelle | 10/10 | 5919 days | 1% |
| Heckter | 9/10 | 6080 days | 1% |
| Amy Clark | 10/10 | 6080 days | 1% |
| Claire | 8/10 | 6095 days | 1% |
| Roger and Heather Smith | 10/10 | 6114 days | 1% |
| Ondrej Kacena | 10/10 | 6120 days | 1% |
| Roger & Margaret | 9/10 | 6123 days | 1% |
| purplekat99 | 9/10 | 6165 days | 1% |
| AndiJorgensen | 5/10 | 6432 days | 1% |
| Rietveld | 8/10 | 6467 days | 1% |
| Pope | 9/10 | 6486 days | 1% |
Adjustments
Several adjustments to the weighted average are added to improve relevancy and credibility. These adjustments apply equally to all experiences that meet the criteria.
Sample Size Adjustment
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.
Recent Reviews Adjustment
-1.65% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 44 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 82 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 79 | -1.59% |
| 80 | -1.61% |
| 81 | -1.63% |
| 82 | -1.65% |
| 83 | -1.67% |
| 84 | -1.69% |
| 85 | -1.71% |
| … | … |
Balancing Adjustment
1.18% 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.
Final Ranking Score
90%
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.