Kia ora, 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
90.62%
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 | 2027 days | 100% |
| Christine | 9/10 | 2086 days | 97% |
| Tracey Cron | 9/10 | 2117 days | 96% |
| Inga Hoffmann | 10/10 | 2817 days | 66% |
| Freddrick Weiser | 9/10 | 3154 days | 50% |
| Mike Dw | 9/10 | 3270 days | 45% |
| Nolwen | 9/10 | 3630 days | 29% |
| The Beans | 10/10 | 3638 days | 29% |
| Ross D | 10/10 | 3644 days | 29% |
| Peter Passlack | 10/10 | 3647 days | 29% |
| Chea Hao Wong | 10/10 | 3699 days | 27% |
| Caroline Shaw | 10/10 | 3869 days | 19% |
| Pierre Mathis | 10/10 | 3880 days | 19% |
| Brenda Oomen | 10/10 | 3883 days | 19% |
| Estelle Daniel | 10/10 | 3887 days | 18% |
| Kim-Lara | 8/10 | 3902 days | 17% |
| Tamara | 10/10 | 3916 days | 17% |
| Sandra P | 10/10 | 3943 days | 16% |
| Marie Schmid | 10/10 | 4271 days | 1% |
| Angie Cairns | 10/10 | 4301 days | 0% |
| Jimmy Shaw | 10/10 | 4554 days | 19% |
| Wendy Hawkins | 8/10 | 4975 days | 19% |
| Roger Hawkins | 9/10 | 4975 days | 19% |
| Tanja Schlagermann | 10/10 | 4982 days | 19% |
| Alexander Mukasa | 10/10 | 4982 days | 19% |
| Erik Muchembled | 10/10 | 4984 days | 19% |
| Andrea Lang | 8/10 | 4986 days | 19% |
| Xtian_P | 10/10 | 5070 days | 19% |
| michellephil | 10/10 | 5131 days | 19% |
| nztintin | 10/10 | 5345 days | 19% |
| mandd | 10/10 | 5345 days | 19% |
| Orlando | 9/10 | 5357 days | 19% |
| Uwe Herrdum | 9/10 | 5361 days | 19% |
| Francis Corrigan | 9/10 | 5375 days | 19% |
| John & Vicki | 9/10 | 5452 days | 19% |
| G Tulloch | 9/10 | 5674 days | 19% |
| Edward Marhi | 8/10 | 5677 days | 19% |
| Robin Adair | 9/10 | 5698 days | 19% |
| Sandra Schulz | 9/10 | 5705 days | 19% |
| Derek Puplett | 9/10 | 5715 days | 19% |
| Martin Current | 9/10 | 5726 days | 19% |
| Hartmut Vogt | 10/10 | 5727 days | 19% |
| allesca | 9/10 | 5831 days | 19% |
| Mary Van | 8/10 | 5892 days | 19% |
| penz | 9/10 | 5954 days | 19% |
| victoriauk | 8/10 | 5984 days | 19% |
| Susanne Strassmann | 6/10 | 6082 days | 16% |
| M Sicard | 9/10 | 6086 days | 19% |
| Lasse Olesen | 9/10 | 6097 days | 19% |
| Keith Wilde | 8/10 | 6099 days | 19% |
| Sarah Goeckener | 9/10 | 6176 days | 19% |
| katharina | 10/10 | 6176 days | 19% |
| Katrin Wennin | 8/10 | 6177 days | 19% |
| Thorben Thede | 9/10 | 6178 days | 19% |
| Roma | 10/10 | 6189 days | 19% |
| HairyHaggis | 10/10 | 6196 days | 19% |
| Ronny | 6/10 | 6415 days | 16% |
| ChristinaV | 10/10 | 6419 days | 19% |
| JudithLehr | 6/10 | 6422 days | 16% |
| Steven | 10/10 | 6426 days | 19% |
| StijnH | 8/10 | 6427 days | 19% |
| FramiskaH | 8/10 | 6428 days | 19% |
| StefanGermany1 | 8/10 | 6428 days | 19% |
| JaninaF | 10/10 | 6428 days | 19% |
| Tatjane | 9/10 | 6441 days | 19% |
| XaviG | 9/10 | 6444 days | 19% |
| JesusB | 7/10 | 6444 days | 18% |
| Denk | 8/10 | 6472 days | 19% |
| Katie Mitchell | 10/10 | 6561 days | 19% |
| Ben Ackland | 8/10 | 6797 days | 19% |
| Tessa McCormick | 8/10 | 6807 days | 19% |
| John Beirne | 10/10 | 7164 days | 19% |
| ranker_110 | 7/10 | 7168 days | 18% |
| Christine | 10/10 | 7173 days | 19% |
| Helle | 9/10 | 7175 days | 19% |
| John | 7/10 | 7175 days | 18% |
| Reggie | 10/10 | 7176 days | 19% |
| Dave | 9/10 | 7187 days | 19% |
| Beate | 8/10 | 7188 days | 19% |
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
-3.64% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 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 | -3.59% |
| 198 | -3.60% |
| 199 | -3.62% |
| 200 | -3.64% |
| 201 | -3.66% |
| 202 | -3.68% |
| 203 | -3.70% |
| … | … |
Balancing Adjustment
1.46% 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 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
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.