G'day, 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 Christchurch Botanic Gardens.
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.
Christchurch Botanic Gardens
Valid Reviews
74 Valid Reviews
The Christchurch Botanic Gardens experience has a total of 74 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 74 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 23 |
|
31% |
| 9/10 | 21 |
|
28% |
| 8/10 | 25 |
|
34% |
| 7/10 | 4 |
|
5% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 1 |
|
1% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
87.97% Average
The raw data average (mean) for all the Christchurch Botanic Gardens valid reviews is 87.97% and is based on 74 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
66 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 74 valid reviews, the experience has 66 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 66 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 19 |
|
29% |
| 9/10 | 18 |
|
27% |
| 8/10 | 25 |
|
38% |
| 7/10 | 3 |
|
5% |
| 6/10 | 0 |
|
0% |
| 5/10 | 0 |
|
0% |
| 4/10 | 1 |
|
2% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
87.42% Average
The raw data average (mean) for all the Christchurch Botanic Gardens face-to-face reviews is 87.42% and is based on 66 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
94.71%
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 |
|---|---|---|---|
| Marja | 10/10 | 283 days | 100% |
| Sophie R | 10/10 | 3135 days | 2% |
| Wilhelm Wiechel | 10/10 | 3219 days | 2% |
| Nienke Best | 9/10 | 3429 days | 1% |
| Bernd Giermann | 8/10 | 3530 days | 1% |
| Zak Jan | 9/10 | 3569 days | 1% |
| Romana Novotna | 8/10 | 3569 days | 1% |
| Tereza Nemeckova | 10/10 | 3578 days | 1% |
| Petr Sykora | 8/10 | 3578 days | 1% |
| Anna | 8/10 | 3582 days | 1% |
| Sherrie Fox | 9/10 | 3584 days | 1% |
| Felix | 9/10 | 3584 days | 1% |
| Lina Kiellamn | 8/10 | 3585 days | 1% |
| Marek | 9/10 | 3616 days | 1% |
| Kristin Pogue | 8/10 | 3817 days | 0% |
| Madelaine Sirch | 9/10 | 3826 days | 0% |
| Jonathan Maus | 8/10 | 3830 days | 0% |
| Lærke Hagelskjær | 8/10 | 3837 days | 0% |
| Alexandra Zwiers | 8/10 | 3841 days | 0% |
| Greta | 8/10 | 3873 days | 0% |
| Anna Guttle | 8/10 | 3887 days | 0% |
| Anais Touri | 8/10 | 3893 days | 0% |
| Kathanina Jasik | 7/10 | 3899 days | 0% |
| Ahmed Mohsen Aly | 7/10 | 3965 days | 0% |
| Caro G | 9/10 | 3971 days | 0% |
| Shona MacDonald | 8/10 | 4542 days | 0% |
| Sandra Frischmann | 9/10 | 4573 days | 0% |
| Carolin Kettler | 9/10 | 4590 days | 0% |
| Mirjam Betschart | 4/10 | 4590 days | 0% |
| Manuela Michelbach | 8/10 | 4593 days | 0% |
| Colin Evins | 8/10 | 4594 days | 0% |
| Janet Evins | 8/10 | 4594 days | 0% |
| F Ballard | 10/10 | 4602 days | 0% |
| Claire Lieval | 9/10 | 4623 days | 0% |
| Alan Blackburn | 10/10 | 4666 days | 0% |
| Christin Woelk | 9/10 | 4905 days | 0% |
| Dupont | 7/10 | 4947 days | 0% |
| Mathieu Brias | 9/10 | 4987 days | 0% |
| Ingrid | 9/10 | 5013 days | 0% |
| Sue Kieseker | 9/10 | 5016 days | 0% |
| Mark and Eefie | 8/10 | 5016 days | 0% |
| M Booty | 8/10 | 5018 days | 0% |
| Anne and John | 9/10 | 5030 days | 0% |
| Jill Boruff | 10/10 | 5300 days | 0% |
| Ron White | 10/10 | 5312 days | 0% |
| Jaap & Susanne | 9/10 | 5315 days | 0% |
| Lyn Deavin | 7/10 | 5318 days | 0% |
| Erik Poirer | 10/10 | 5320 days | 0% |
| Jon Winter | 10/10 | 5321 days | 0% |
| David & Sue Lokkerbol | 10/10 | 5321 days | 0% |
| Des & Ann Bidwell | 10/10 | 5330 days | 0% |
| Sally Rawson | 8/10 | 5346 days | 0% |
| David & Audrey | 10/10 | 5412 days | 0% |
| Steve Pearce | 8/10 | 5676 days | 0% |
| Derek Puplett | 10/10 | 5676 days | 0% |
| Belony | 10/10 | 5687 days | 0% |
| Andy | 8/10 | 5687 days | 0% |
| Forestal Youri | 10/10 | 5692 days | 0% |
| Gerry Nichols | 10/10 | 5695 days | 0% |
| Mary Van | 10/10 | 5853 days | 0% |
| Conny | 9/10 | 5971 days | 0% |
| Jesper Sch | 10/10 | 6019 days | 0% |
| OMPA | 10/10 | 6025 days | 0% |
| Janny en Bert | 8/10 | 6027 days | 0% |
| Peter Brown | 10/10 | 6033 days | 0% |
| Bob Kusesia | 9/10 | 6038 days | 0% |
| Johan | 8/10 | 6039 days | 0% |
| Jeanne Singuefreld | 8/10 | 6047 days | 0% |
| John Borneman | 9/10 | 6082 days | 0% |
| Dermot Bryne | 9/10 | 6150 days | 0% |
| andyge | 9/10 | 6157 days | 0% |
| AndyEngland | 8/10 | 6359 days | 0% |
| PamB | 10/10 | 6359 days | 0% |
| Andy Baker | 10/10 | 6391 days | 0% |
Adjustments
No Adjustment
Several adjustments to the weighted average may be added to improve relevancy and credibility. Christchurch Botanic Gardens does not meet the criteria for any of these adjustments to apply.
Balancing Adjustment
0.46% 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 folk 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
95%
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.