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 Rankers Booking Service.
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.
Rankers Booking Service
Valid Reviews
85 Valid Reviews
The Rankers Booking Service experience has a total of 86 reviews. There are 85 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 85 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 58 |
|
68% |
| 9/10 | 18 |
|
21% |
| 8/10 | 7 |
|
8% |
| 7/10 | 1 |
|
1% |
| 6/10 | 1 |
|
1% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
95.41% Average
The raw data average (mean) for all the Rankers Booking Service valid reviews is 95.41% and is based on 85 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.
Weighted Average
95.85%
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 |
|---|---|---|---|
| Mary Anne | 10/10 | 1306 days | 100% |
| BACHAND Alain | 9/10 | 2310 days | 7% |
| Anja Bader | 10/10 | 2310 days | 7% |
| Jranette Billings | 9/10 | 2310 days | 7% |
| Steven Miller | 10/10 | 2340 days | 7% |
| René van der Molen | 10/10 | 2341 days | 7% |
| John Ehrlich | 10/10 | 2341 days | 7% |
| Erica Chisholm | 10/10 | 2341 days | 7% |
| Paola La Rocca | 9/10 | 2341 days | 6% |
| Mike Bromfield | 10/10 | 2372 days | 6% |
| paul white | 9/10 | 2372 days | 6% |
| Alois Markart | 10/10 | 2372 days | 6% |
| VERNET ALEXANDRA | 10/10 | 2372 days | 6% |
| Amandine Darnet | 10/10 | 2372 days | 6% |
| herve duflot | 10/10 | 2372 days | 6% |
| David | 10/10 | 2401 days | 6% |
| DESIDERIO MOLERO | 9/10 | 2402 days | 6% |
| Piotr Lubowicki | 10/10 | 2402 days | 6% |
| Christopher Anker | 10/10 | 2402 days | 6% |
| Michael Rovinsky | 10/10 | 2402 days | 6% |
| Kirsty Gillett | 10/10 | 2432 days | 6% |
| Paul Stevens | 10/10 | 2433 days | 6% |
| Sabrina Maier | 10/10 | 2433 days | 6% |
| M FAIZAL JABAR | 10/10 | 2433 days | 6% |
| Bree Lawlor | 10/10 | 2433 days | 6% |
| Nusyana Cham Pi | 10/10 | 2433 days | 6% |
| Benjamin Bakk | 10/10 | 2433 days | 6% |
| Robert Dugyik | 10/10 | 2433 days | 6% |
| Loïc Clerc | 10/10 | 2433 days | 6% |
| Joe Culbertson | 9/10 | 2433 days | 5% |
| Alechia Crown | 10/10 | 2433 days | 6% |
| Irene Lanser | 8/10 | 2463 days | 5% |
| Susan S | 8/10 | 2463 days | 5% |
| Sarah Peres | 10/10 | 2463 days | 5% |
| Brian Webber | 10/10 | 2463 days | 5% |
| Henry Schenker | 10/10 | 2463 days | 5% |
| bat a | 9/10 | 2463 days | 5% |
| Judy Holt | 8/10 | 2463 days | 5% |
| Taher Hasanali | 10/10 | 2463 days | 5% |
| Susan Boyton | 10/10 | 2494 days | 5% |
| jeffrey goebel | 9/10 | 2494 days | 5% |
| Charlotte Amouret | 10/10 | 2494 days | 5% |
| Sophie ROUX | 10/10 | 2525 days | 5% |
| Heather McDonald | 9/10 | 2525 days | 4% |
| Debra Tolic | 10/10 | 2525 days | 5% |
| Chee Kuan Lim | 9/10 | 2525 days | 4% |
| G Visser | 10/10 | 2525 days | 5% |
| DEBBIE LAMBERT | 10/10 | 2525 days | 5% |
| Gina DAVIS | 10/10 | 2525 days | 5% |
| Paul Mullooly | 10/10 | 2525 days | 5% |
| Lucie PHILIPPE | 10/10 | 2525 days | 5% |
| Emily Joyce | 9/10 | 2555 days | 4% |
| Sergio Meana Martinez | 10/10 | 2555 days | 4% |
| Evelyn Toh | 10/10 | 2555 days | 4% |
| Jean-Luc Brocard | 9/10 | 2555 days | 4% |
| Deborah Vitali | 8/10 | 2586 days | 4% |
| Jeramy Janoski | 10/10 | 2586 days | 4% |
| Daniel Benjamin | 10/10 | 2586 days | 4% |
| Sarah Bailey | 10/10 | 2586 days | 4% |
| Michael Jost | 10/10 | 2586 days | 4% |
| Van Weigel | 10/10 | 2586 days | 4% |
| Lizzie Lacey-Brennan | 10/10 | 2586 days | 4% |
| Chia Shen Cheng | 10/10 | 2615 days | 4% |
| Gilbert Deveaux | 10/10 | 2615 days | 4% |
| Kathryn Conrad | 10/10 | 2616 days | 4% |
| Fannie Bernier | 9/10 | 2616 days | 3% |
| hannah murray | 8/10 | 2616 days | 3% |
| Whitney Bak | 10/10 | 2616 days | 4% |
| Sandra Cabrera | 9/10 | 2616 days | 3% |
| Wendy Leung | 10/10 | 2616 days | 4% |
| Adrian Trumper | 9/10 | 2616 days | 3% |
| Marcos Tosto | 7/10 | 2616 days | 2% |
| John van Herk | 9/10 | 2616 days | 3% |
| Teun Steur | 9/10 | 2616 days | 3% |
| JOSY ANANTA WIJAYA | 10/10 | 2647 days | 3% |
| Citra Lestari | 10/10 | 2647 days | 3% |
| wendy legge | 10/10 | 2647 days | 3% |
| ALEX RIVERO | 9/10 | 2647 days | 3% |
| David Caravati | 10/10 | 2647 days | 3% |
| F B | 8/10 | 2675 days | 3% |
| MERVYN ADAMS | 6/10 | 2705 days | 0% |
| Chan Hoe Yip | 8/10 | 2736 days | 2% |
| Ana Segota | 10/10 | 2766 days | 2% |
| Mark Lechner | 10/10 | 2766 days | 2% |
| Richard Tallack | 10/10 | 2797 days | 2% |
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 Rankers Booking Service experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-2.49% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 104 days. However the Rankers Booking Service 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 Rankers Booking Service experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -2.45% |
| 198 | -2.47% |
| 199 | -2.48% |
| 200 | -2.49% |
| 201 | -2.50% |
| 202 | -2.52% |
| 203 | -2.53% |
| … | … |
Balancing Adjustment
0.60% 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
94%
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.