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 Akaroa Dolphins.
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.
Akaroa Dolphins
Valid Reviews
79 Valid Reviews
The Akaroa Dolphins experience has a total of 80 reviews. There are 79 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 79 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 32 |
|
41% |
| 9/10 | 26 |
|
33% |
| 8/10 | 15 |
|
19% |
| 7/10 | 3 |
|
4% |
| 6/10 | 3 |
|
4% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
90.25% Average
The raw data average (mean) for all the Akaroa Dolphins valid reviews is 90.25% and is based on 79 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
59 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 79 valid reviews, the experience has 59 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 59 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 19 |
|
32% |
| 9/10 | 20 |
|
34% |
| 8/10 | 14 |
|
24% |
| 7/10 | 3 |
|
5% |
| 6/10 | 3 |
|
5% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 0 |
|
0% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
88.31% Average
The raw data average (mean) for all the Akaroa Dolphins face-to-face reviews is 88.31% and is based on 59 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
91.18%
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 |
|---|---|---|---|
| Lucy C | 9/10 | 1716 days | 100% |
| Christine | 9/10 | 1775 days | 90% |
| Tracey Cron | 9/10 | 1806 days | 88% |
| Inga Hoffmann | 10/10 | 2506 days | 63% |
| Freddrick Weiser | 9/10 | 2843 days | 51% |
| Mike Dw | 9/10 | 2959 days | 46% |
| Nolwen | 9/10 | 3319 days | 33% |
| The Beans | 10/10 | 3327 days | 33% |
| Ross D | 10/10 | 3333 days | 33% |
| Peter Passlack | 10/10 | 3336 days | 33% |
| Chea Hao Wong | 10/10 | 3388 days | 31% |
| Caroline Shaw | 10/10 | 3558 days | 25% |
| Pierre Mathis | 10/10 | 3569 days | 25% |
| Brenda Oomen | 10/10 | 3572 days | 25% |
| Estelle Daniel | 10/10 | 3576 days | 24% |
| Kim-Lara | 8/10 | 3591 days | 23% |
| Tamara | 10/10 | 3605 days | 23% |
| Sandra P | 10/10 | 3632 days | 22% |
| Marie Schmid | 10/10 | 3960 days | 10% |
| Angie Cairns | 10/10 | 3990 days | 9% |
| Jimmy Shaw | 10/10 | 4243 days | 0% |
| Wendy Hawkins | 8/10 | 4664 days | 13% |
| Roger Hawkins | 9/10 | 4664 days | 13% |
| Tanja Schlagermann | 10/10 | 4671 days | 14% |
| Alexander Mukasa | 10/10 | 4671 days | 14% |
| Erik Muchembled | 10/10 | 4673 days | 14% |
| Andrea Lang | 8/10 | 4675 days | 13% |
| Xtian_P | 10/10 | 4759 days | 14% |
| michellephil | 10/10 | 4820 days | 14% |
| nztintin | 10/10 | 5034 days | 14% |
| mandd | 10/10 | 5034 days | 14% |
| Orlando | 9/10 | 5046 days | 13% |
| Uwe Herrdum | 9/10 | 5050 days | 13% |
| Francis Corrigan | 9/10 | 5064 days | 13% |
| John & Vicki | 9/10 | 5141 days | 13% |
| G Tulloch | 9/10 | 5363 days | 13% |
| Edward Marhi | 8/10 | 5366 days | 13% |
| Robin Adair | 9/10 | 5387 days | 13% |
| Sandra Schulz | 9/10 | 5394 days | 13% |
| Derek Puplett | 9/10 | 5404 days | 13% |
| Martin Current | 9/10 | 5415 days | 13% |
| Hartmut Vogt | 10/10 | 5416 days | 14% |
| allesca | 9/10 | 5520 days | 13% |
| Mary Van | 8/10 | 5581 days | 13% |
| penz | 9/10 | 5643 days | 13% |
| victoriauk | 8/10 | 5673 days | 13% |
| Susanne Strassmann | 6/10 | 5771 days | 11% |
| M Sicard | 9/10 | 5775 days | 13% |
| Lasse Olesen | 9/10 | 5786 days | 13% |
| Keith Wilde | 8/10 | 5788 days | 13% |
| Sarah Goeckener | 9/10 | 5865 days | 13% |
| katharina | 10/10 | 5865 days | 14% |
| Katrin Wennin | 8/10 | 5866 days | 13% |
| Thorben Thede | 9/10 | 5867 days | 13% |
| Roma | 10/10 | 5878 days | 14% |
| HairyHaggis | 10/10 | 5885 days | 14% |
| Ronny | 6/10 | 6104 days | 11% |
| ChristinaV | 10/10 | 6108 days | 14% |
| JudithLehr | 6/10 | 6111 days | 11% |
| Steven | 10/10 | 6115 days | 14% |
| StijnH | 8/10 | 6116 days | 13% |
| FramiskaH | 8/10 | 6117 days | 13% |
| StefanGermany1 | 8/10 | 6117 days | 13% |
| JaninaF | 10/10 | 6117 days | 14% |
| Tatjane | 9/10 | 6130 days | 13% |
| XaviG | 9/10 | 6133 days | 13% |
| JesusB | 7/10 | 6133 days | 12% |
| Denk | 8/10 | 6161 days | 13% |
| Katie Mitchell | 10/10 | 6250 days | 14% |
| Ben Ackland | 8/10 | 6486 days | 13% |
| Tessa McCormick | 8/10 | 6496 days | 13% |
| John Beirne | 10/10 | 6853 days | 14% |
| ranker_110 | 7/10 | 6857 days | 12% |
| Christine | 10/10 | 6862 days | 14% |
| Helle | 9/10 | 6864 days | 13% |
| John | 7/10 | 6864 days | 12% |
| Reggie | 10/10 | 6865 days | 14% |
| Dave | 9/10 | 6876 days | 13% |
| Beate | 8/10 | 6877 days | 13% |
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 Akaroa Dolphins experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.06% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 days. However the Akaroa Dolphins 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 Akaroa Dolphins experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -4.00% |
| 198 | -4.02% |
| 199 | -4.04% |
| 200 | -4.06% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
1.44% 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
89%
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.