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
91.46%
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 | 1358 days | 100% |
| Christine | 9/10 | 1417 days | 83% |
| Tracey Cron | 9/10 | 1448 days | 75% |
| Inga Hoffmann | 10/10 | 2148 days | 25% |
| Freddrick Weiser | 9/10 | 2485 days | 21% |
| Mike Dw | 9/10 | 2601 days | 19% |
| Nolwen | 9/10 | 2961 days | 15% |
| The Beans | 10/10 | 2969 days | 15% |
| Ross D | 10/10 | 2975 days | 15% |
| Peter Passlack | 10/10 | 2978 days | 15% |
| Chea Hao Wong | 10/10 | 3030 days | 15% |
| Caroline Shaw | 10/10 | 3200 days | 13% |
| Pierre Mathis | 10/10 | 3211 days | 13% |
| Brenda Oomen | 10/10 | 3214 days | 13% |
| Estelle Daniel | 10/10 | 3218 days | 13% |
| Kim-Lara | 8/10 | 3233 days | 12% |
| Tamara | 10/10 | 3247 days | 12% |
| Sandra P | 10/10 | 3274 days | 12% |
| Marie Schmid | 10/10 | 3602 days | 8% |
| Angie Cairns | 10/10 | 3632 days | 8% |
| Jimmy Shaw | 10/10 | 3885 days | 5% |
| Wendy Hawkins | 8/10 | 4306 days | 0% |
| Roger Hawkins | 9/10 | 4306 days | 0% |
| Tanja Schlagermann | 10/10 | 4313 days | 0% |
| Alexander Mukasa | 10/10 | 4313 days | 0% |
| Erik Muchembled | 10/10 | 4315 days | 0% |
| Andrea Lang | 8/10 | 4317 days | 0% |
| Xtian_P | 10/10 | 4401 days | 5% |
| michellephil | 10/10 | 4462 days | 5% |
| nztintin | 10/10 | 4676 days | 5% |
| mandd | 10/10 | 4676 days | 5% |
| Orlando | 9/10 | 4688 days | 5% |
| Uwe Herrdum | 9/10 | 4692 days | 5% |
| Francis Corrigan | 9/10 | 4706 days | 5% |
| John & Vicki | 9/10 | 4783 days | 5% |
| G Tulloch | 9/10 | 5005 days | 5% |
| Edward Marhi | 8/10 | 5008 days | 5% |
| Robin Adair | 9/10 | 5029 days | 5% |
| Sandra Schulz | 9/10 | 5036 days | 5% |
| Derek Puplett | 9/10 | 5046 days | 5% |
| Martin Current | 9/10 | 5057 days | 5% |
| Hartmut Vogt | 10/10 | 5058 days | 5% |
| allesca | 9/10 | 5162 days | 5% |
| Mary Van | 8/10 | 5223 days | 5% |
| penz | 9/10 | 5285 days | 5% |
| victoriauk | 8/10 | 5315 days | 5% |
| Susanne Strassmann | 6/10 | 5413 days | 4% |
| M Sicard | 9/10 | 5417 days | 5% |
| Lasse Olesen | 9/10 | 5428 days | 5% |
| Keith Wilde | 8/10 | 5430 days | 5% |
| Sarah Goeckener | 9/10 | 5507 days | 5% |
| katharina | 10/10 | 5507 days | 5% |
| Katrin Wennin | 8/10 | 5508 days | 5% |
| Thorben Thede | 9/10 | 5509 days | 5% |
| Roma | 10/10 | 5520 days | 5% |
| HairyHaggis | 10/10 | 5527 days | 5% |
| Ronny | 6/10 | 5746 days | 4% |
| ChristinaV | 10/10 | 5750 days | 5% |
| JudithLehr | 6/10 | 5753 days | 4% |
| Steven | 10/10 | 5757 days | 5% |
| StijnH | 8/10 | 5758 days | 5% |
| FramiskaH | 8/10 | 5759 days | 5% |
| StefanGermany1 | 8/10 | 5759 days | 5% |
| JaninaF | 10/10 | 5759 days | 5% |
| Tatjane | 9/10 | 5772 days | 5% |
| XaviG | 9/10 | 5775 days | 5% |
| JesusB | 7/10 | 5775 days | 5% |
| Denk | 8/10 | 5803 days | 5% |
| Katie Mitchell | 10/10 | 5892 days | 5% |
| Ben Ackland | 8/10 | 6128 days | 5% |
| Tessa McCormick | 8/10 | 6138 days | 5% |
| John Beirne | 10/10 | 6495 days | 5% |
| ranker_110 | 7/10 | 6499 days | 5% |
| Christine | 10/10 | 6504 days | 5% |
| Helle | 9/10 | 6506 days | 5% |
| John | 7/10 | 6506 days | 5% |
| Reggie | 10/10 | 6507 days | 5% |
| Dave | 9/10 | 6518 days | 5% |
| Beate | 8/10 | 6519 days | 5% |
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
-4.04% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 41 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 | -3.98% |
| 198 | -4.00% |
| 199 | -4.02% |
| 200 | -4.04% |
| 201 | -4.06% |
| 202 | -4.08% |
| 203 | -4.10% |
| … | … |
Balancing Adjustment
1.39% 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.