Hey, 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
91.35%
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 | 1267 days | 100% |
| Christine | 9/10 | 1326 days | 84% |
| Tracey Cron | 9/10 | 1357 days | 77% |
| Inga Hoffmann | 10/10 | 2057 days | 20% |
| Freddrick Weiser | 9/10 | 2394 days | 17% |
| Mike Dw | 9/10 | 2510 days | 16% |
| Nolwen | 9/10 | 2870 days | 13% |
| The Beans | 10/10 | 2879 days | 13% |
| Ross D | 10/10 | 2884 days | 13% |
| Peter Passlack | 10/10 | 2887 days | 13% |
| Chea Hao Wong | 10/10 | 2940 days | 12% |
| Caroline Shaw | 10/10 | 3109 days | 11% |
| Pierre Mathis | 10/10 | 3120 days | 11% |
| Brenda Oomen | 10/10 | 3123 days | 11% |
| Estelle Daniel | 10/10 | 3127 days | 11% |
| Kim-Lara | 8/10 | 3142 days | 10% |
| Tamara | 10/10 | 3156 days | 11% |
| Sandra P | 10/10 | 3184 days | 10% |
| Marie Schmid | 10/10 | 3511 days | 7% |
| Angie Cairns | 10/10 | 3541 days | 7% |
| Jimmy Shaw | 10/10 | 3794 days | 5% |
| Wendy Hawkins | 8/10 | 4215 days | 1% |
| Roger Hawkins | 9/10 | 4215 days | 1% |
| Tanja Schlagermann | 10/10 | 4222 days | 1% |
| Alexander Mukasa | 10/10 | 4222 days | 1% |
| Erik Muchembled | 10/10 | 4224 days | 1% |
| Andrea Lang | 8/10 | 4226 days | 1% |
| Xtian_P | 10/10 | 4310 days | 1% |
| michellephil | 10/10 | 4371 days | 0% |
| nztintin | 10/10 | 4585 days | 4% |
| mandd | 10/10 | 4585 days | 4% |
| Orlando | 9/10 | 4597 days | 4% |
| Uwe Herrdum | 9/10 | 4601 days | 4% |
| Francis Corrigan | 9/10 | 4615 days | 4% |
| John & Vicki | 9/10 | 4692 days | 4% |
| G Tulloch | 9/10 | 4914 days | 4% |
| Edward Marhi | 8/10 | 4917 days | 4% |
| Robin Adair | 9/10 | 4938 days | 4% |
| Sandra Schulz | 9/10 | 4945 days | 4% |
| Derek Puplett | 9/10 | 4955 days | 4% |
| Martin Current | 9/10 | 4966 days | 4% |
| Hartmut Vogt | 10/10 | 4967 days | 4% |
| allesca | 9/10 | 5071 days | 4% |
| Mary Van | 8/10 | 5132 days | 4% |
| penz | 9/10 | 5194 days | 4% |
| victoriauk | 8/10 | 5224 days | 4% |
| Susanne Strassmann | 6/10 | 5322 days | 4% |
| M Sicard | 9/10 | 5326 days | 4% |
| Lasse Olesen | 9/10 | 5337 days | 4% |
| Keith Wilde | 8/10 | 5339 days | 4% |
| Sarah Goeckener | 9/10 | 5416 days | 4% |
| katharina | 10/10 | 5416 days | 4% |
| Katrin Wennin | 8/10 | 5417 days | 4% |
| Thorben Thede | 9/10 | 5418 days | 4% |
| Roma | 10/10 | 5429 days | 4% |
| HairyHaggis | 10/10 | 5436 days | 4% |
| Ronny | 6/10 | 5655 days | 4% |
| ChristinaV | 10/10 | 5659 days | 4% |
| JudithLehr | 6/10 | 5662 days | 4% |
| Steven | 10/10 | 5666 days | 4% |
| StijnH | 8/10 | 5667 days | 4% |
| FramiskaH | 8/10 | 5668 days | 4% |
| StefanGermany1 | 8/10 | 5668 days | 4% |
| JaninaF | 10/10 | 5668 days | 4% |
| Tatjane | 9/10 | 5681 days | 4% |
| XaviG | 9/10 | 5684 days | 4% |
| JesusB | 7/10 | 5684 days | 4% |
| Denk | 8/10 | 5712 days | 4% |
| Katie Mitchell | 10/10 | 5801 days | 4% |
| Ben Ackland | 8/10 | 6037 days | 4% |
| Tessa McCormick | 8/10 | 6047 days | 4% |
| John Beirne | 10/10 | 6404 days | 4% |
| ranker_110 | 7/10 | 6408 days | 4% |
| Christine | 10/10 | 6413 days | 4% |
| Helle | 9/10 | 6415 days | 4% |
| John | 7/10 | 6415 days | 4% |
| Reggie | 10/10 | 6416 days | 4% |
| Dave | 9/10 | 6427 days | 4% |
| Beate | 8/10 | 6428 days | 4% |
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
-3.03% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 75 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 | -2.98% |
| 198 | -3.00% |
| 199 | -3.01% |
| 200 | -3.03% |
| 201 | -3.04% |
| 202 | -3.06% |
| 203 | -3.07% |
| … | … |
Balancing Adjustment
1.24% 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.