Ranking Score Explained
Hi there, 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
76 Valid Reviews
The Akaroa Dolphins experience has a total of 77 reviews. There are 76 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 76 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 32 |
|
42% |
| 9/10 | 23 |
|
30% |
| 8/10 | 15 |
|
20% |
| 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% |
90.26% Average
The raw data average (mean) for all the Akaroa Dolphins valid reviews is 90.26% and is based on 76 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 76 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
95.20%
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 | Face-to-Face | Weight | Relative Weight |
|---|---|---|---|---|---|
| Inga Hoffmann | 10/10 | 255 days | 89.7 | 100% | |
| Freddrick Weiser | 9/10 | 592 days | 45.09 | 50% | |
| Mike Dw | 9/10 | 708 days |  |
28.73 | 32% |
| Nolwen | 9/10 | 1068 days | |
5.12 | 6% |
| The Beans | 10/10 | 1077 days | 5.05 | 6% | |
| Ross D | 10/10 | 1082 days | |
5.03 | 6% |
| Peter Passlack | 10/10 | 1085 days | 5.02 | 6% | |
| Chea Hao Wong | 10/10 | 1138 days | 4.93 | 5% | |
| Caroline Shaw | 10/10 | 1307 days | |
4.64 | 5% |
| Pierre Mathis | 10/10 | 1318 days | |
4.62 | 5% |
| Brenda Oomen | 10/10 | 1321 days | |
4.61 | 5% |
| Estelle Daniel | 10/10 | 1325 days | 4.61 | 5% | |
| Kim-Lara | 8/10 | 1340 days | |
4.35 | 5% |
| Tamara | 10/10 | 1354 days | |
4.56 | 5% |
| Sandra P | 10/10 | 1382 days | 4.51 | 5% | |
| Marie Schmid | 10/10 | 1709 days | |
3.95 | 4% |
| Angie Cairns | 10/10 | 1739 days | |
3.9 | 4% |
| Jimmy Shaw | 10/10 | 1992 days | 3.46 | 4% | |
| Wendy Hawkins | 8/10 | 2413 days | |
2.61 | 3% |
| Roger Hawkins | 9/10 | 2413 days | |
2.74 | 3% |
| Tanja Schlagermann | 10/10 | 2420 days | |
2.73 | 3% |
| Alexander Mukasa | 10/10 | 2420 days | |
2.73 | 3% |
| Erik Muchembled | 10/10 | 2422 days | |
2.73 | 3% |
| Andrea Lang | 8/10 | 2424 days | |
2.59 | 3% |
| Xtian_P | 10/10 | 2508 days | 2.58 | 3% | |
| michellephil | 10/10 | 2569 days | 2.48 | 3% | |
| nztintin | 10/10 | 2783 days | 2.11 | 2% | |
| mandd | 10/10 | 2783 days | 2.11 | 2% | |
| Orlando | 9/10 | 2795 days | |
2.09 | 2% |
| Uwe Herrdum | 9/10 | 2799 days | |
2.08 | 2% |
| Francis Corrigan | 9/10 | 2813 days | |
2.06 | 2% |
| John & Vicki | 9/10 | 2890 days | |
1.93 | 2% |
| G Tulloch | 9/10 | 3112 days | |
1.55 | 2% |
| Edward Marhi | 8/10 | 3115 days | |
1.46 | 2% |
| Robin Adair | 9/10 | 3136 days | |
1.51 | 2% |
| Sandra Schulz | 9/10 | 3143 days | |
1.49 | 2% |
| Derek Puplett | 9/10 | 3153 days | |
1.48 | 2% |
| Martin Current | 9/10 | 3164 days | |
1.46 | 2% |
| Hartmut Vogt | 10/10 | 3165 days | |
1.46 | 2% |
| allesca | 9/10 | 3269 days | 1.28 | 1% | |
| Mary Van | 8/10 | 3330 days | 1.11 | 1% | |
| penz | 9/10 | 3392 days | 1.07 | 1% | |
| victoriauk | 8/10 | 3422 days | |
0.96 | 1% |
| Susanne Strassmann | 6/10 | 3520 days | |
0.7 | 1% |
| M Sicard | 9/10 | 3524 days | |
0.84 | 1% |
| Lasse Olesen | 9/10 | 3535 days | |
0.82 | 1% |
| Keith Wilde | 8/10 | 3537 days | |
0.78 | 1% |
| Sarah Goeckener | 9/10 | 3614 days | |
0.69 | 1% |
| katharina | 10/10 | 3614 days | |
0.69 | 1% |
| Katrin Wennin | 8/10 | 3615 days | |
0.65 | 1% |
| Thorben Thede | 9/10 | 3616 days | |
0.68 | 1% |
| Roma | 10/10 | 3627 days | |
0.66 | 1% |
| HairyHaggis | 10/10 | 3634 days | 0.65 | 1% | |
| Ronny | 6/10 | 3853 days | |
0.23 | 0% |
| ChristinaV | 10/10 | 3858 days | |
0.27 | 0% |
| JudithLehr | 6/10 | 3860 days | |
0.22 | 0% |
| Steven | 10/10 | 3865 days | |
0.26 | 0% |
| StijnH | 8/10 | 3865 days | |
0.24 | 0% |
| FramiskaH | 8/10 | 3866 days | |
0.24 | 0% |
| StefanGermany1 | 8/10 | 3866 days | |
0.24 | 0% |
| JaninaF | 10/10 | 3866 days | |
0.26 | 0% |
| Tatjane | 9/10 | 3880 days | |
0.23 | 0% |
| XaviG | 9/10 | 3882 days | |
0.23 | 0% |
| JesusB | 7/10 | 3882 days | |
0.21 | 0% |
| Denk | 8/10 | 3911 days | |
0.17 | 0% |
| Katie Mitchell | 10/10 | 3999 days | 0.03 | 0% | |
| Ben Ackland | 8/10 | 4235 days | |
0.0 | 0% |
| Tessa McCormick | 8/10 | 4245 days | |
0.0 | 0% |
| John Beirne | 10/10 | 4602 days | |
0.0 | 0% |
| ranker_110 | 7/10 | 4606 days | |
0.0 | 0% |
| Christine | 10/10 | 4611 days | |
0.0 | 0% |
| Helle | 9/10 | 4613 days | |
0.0 | 0% |
| John | 7/10 | 4613 days | |
0.0 | 0% |
| Reggie | 10/10 | 4614 days | |
0.0 | 0% |
| Dave | 9/10 | 4625 days | |
0.0 | 0% |
| Beate | 8/10 | 4626 days | |
0.0 | 0% |
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
-3.98% Adjustment
There may be an adjustment if an experience hasn't received any reviews within the last 60 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 199 days.
The Akaroa Dolphins experience has been adjusted for 199 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 196 | -3.92% |
| 197 | -3.94% |
| 198 | -3.96% |
| 199 | -3.98% |
| 200 | -4.00% |
| 201 | -4.02% |
| 202 | -4.04% |
| … | … |
Final Ranking Score
91%
The final ranking score once adjustments and rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.
If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.