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 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
90.80%
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 | 1946 days | 100% |
| Christine | 9/10 | 2005 days | 97% |
| Tracey Cron | 9/10 | 2036 days | 96% |
| Inga Hoffmann | 10/10 | 2736 days | 66% |
| Freddrick Weiser | 9/10 | 3073 days | 50% |
| Mike Dw | 9/10 | 3189 days | 45% |
| Nolwen | 9/10 | 3549 days | 29% |
| The Beans | 10/10 | 3558 days | 29% |
| Ross D | 10/10 | 3563 days | 29% |
| Peter Passlack | 10/10 | 3566 days | 29% |
| Chea Hao Wong | 10/10 | 3619 days | 27% |
| Caroline Shaw | 10/10 | 3788 days | 19% |
| Pierre Mathis | 10/10 | 3799 days | 19% |
| Brenda Oomen | 10/10 | 3802 days | 19% |
| Estelle Daniel | 10/10 | 3806 days | 18% |
| Kim-Lara | 8/10 | 3821 days | 17% |
| Tamara | 10/10 | 3835 days | 17% |
| Sandra P | 10/10 | 3863 days | 16% |
| Marie Schmid | 10/10 | 4190 days | 1% |
| Angie Cairns | 10/10 | 4220 days | 0% |
| Jimmy Shaw | 10/10 | 4473 days | 16% |
| Wendy Hawkins | 8/10 | 4894 days | 15% |
| Roger Hawkins | 9/10 | 4894 days | 15% |
| Tanja Schlagermann | 10/10 | 4901 days | 16% |
| Alexander Mukasa | 10/10 | 4901 days | 16% |
| Erik Muchembled | 10/10 | 4903 days | 16% |
| Andrea Lang | 8/10 | 4905 days | 15% |
| Xtian_P | 10/10 | 4989 days | 16% |
| michellephil | 10/10 | 5050 days | 16% |
| nztintin | 10/10 | 5264 days | 16% |
| mandd | 10/10 | 5264 days | 16% |
| Orlando | 9/10 | 5276 days | 15% |
| Uwe Herrdum | 9/10 | 5280 days | 15% |
| Francis Corrigan | 9/10 | 5294 days | 15% |
| John & Vicki | 9/10 | 5371 days | 15% |
| G Tulloch | 9/10 | 5593 days | 15% |
| Edward Marhi | 8/10 | 5596 days | 15% |
| Robin Adair | 9/10 | 5617 days | 15% |
| Sandra Schulz | 9/10 | 5624 days | 15% |
| Derek Puplett | 9/10 | 5634 days | 15% |
| Martin Current | 9/10 | 5645 days | 15% |
| Hartmut Vogt | 10/10 | 5646 days | 16% |
| allesca | 9/10 | 5750 days | 15% |
| Mary Van | 8/10 | 5811 days | 15% |
| penz | 9/10 | 5873 days | 15% |
| victoriauk | 8/10 | 5903 days | 15% |
| Susanne Strassmann | 6/10 | 6001 days | 12% |
| M Sicard | 9/10 | 6005 days | 15% |
| Lasse Olesen | 9/10 | 6016 days | 15% |
| Keith Wilde | 8/10 | 6018 days | 15% |
| Sarah Goeckener | 9/10 | 6095 days | 15% |
| katharina | 10/10 | 6095 days | 16% |
| Katrin Wennin | 8/10 | 6096 days | 15% |
| Thorben Thede | 9/10 | 6097 days | 15% |
| Roma | 10/10 | 6108 days | 16% |
| HairyHaggis | 10/10 | 6115 days | 16% |
| Ronny | 6/10 | 6334 days | 12% |
| ChristinaV | 10/10 | 6339 days | 16% |
| JudithLehr | 6/10 | 6341 days | 12% |
| Steven | 10/10 | 6346 days | 16% |
| StijnH | 8/10 | 6346 days | 15% |
| FramiskaH | 8/10 | 6347 days | 15% |
| StefanGermany1 | 8/10 | 6347 days | 15% |
| JaninaF | 10/10 | 6347 days | 16% |
| Tatjane | 9/10 | 6361 days | 15% |
| XaviG | 9/10 | 6363 days | 15% |
| JesusB | 7/10 | 6363 days | 14% |
| Denk | 8/10 | 6391 days | 15% |
| Katie Mitchell | 10/10 | 6480 days | 16% |
| Ben Ackland | 8/10 | 6716 days | 15% |
| Tessa McCormick | 8/10 | 6726 days | 15% |
| John Beirne | 10/10 | 7083 days | 16% |
| ranker_110 | 7/10 | 7087 days | 14% |
| Christine | 10/10 | 7092 days | 16% |
| Helle | 9/10 | 7094 days | 15% |
| John | 7/10 | 7094 days | 14% |
| Reggie | 10/10 | 7095 days | 16% |
| Dave | 9/10 | 7106 days | 15% |
| Beate | 8/10 | 7107 days | 15% |
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
-2.08% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 123 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 | -2.05% |
| 198 | -2.06% |
| 199 | -2.07% |
| 200 | -2.08% |
| 201 | -2.09% |
| 202 | -2.11% |
| 203 | -2.12% |
| … | … |
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.