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.
Nick Morrison
Rankers owner
Akaroa Dolphins
Valid Reviews
75 Valid Reviews
The Akaroa Dolphins experience has a total of 76 reviews. There are 75 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 75 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 31 |
|
41% |
| 9/10 | 23 |
|
31% |
| 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% |
90.13% Average
The raw data average (mean) for all the Akaroa Dolphins valid reviews is 90.13% and is based on 75 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 75 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
92.73%
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 |
|---|---|---|---|---|---|
| Freddrick Weiser | 9/10 | 232 days | 91.47 | 94% | |
| Mike Dw | 9/10 | 348 days |  |
96.97 | 100% |
| Nolwen | 9/10 | 708 days | |
34.48 | 35% |
| The Beans | 10/10 | 716 days | 27.76 | 28% | |
| Ross D | 10/10 | 722 days | |
32.46 | 33% |
| Peter Passlack | 10/10 | 725 days | 26.69 | 27% | |
| Chea Hao Wong | 10/10 | 777 days | 21.02 | 21% | |
| Caroline Shaw | 10/10 | 947 days | |
10.17 | 10% |
| Pierre Mathis | 10/10 | 958 days | |
9.57 | 9% |
| Brenda Oomen | 10/10 | 961 days | |
9.41 | 9% |
| Estelle Daniel | 10/10 | 965 days | 7.68 | 7% | |
| Kim-Lara | 8/10 | 980 days | |
8.51 | 8% |
| Tamara | 10/10 | 994 days | |
7.94 | 7% |
| Sandra P | 10/10 | 1021 days | 5.87 | 5% | |
| Marie Schmid | 10/10 | 1349 days | |
5.58 | 5% |
| Angie Cairns | 10/10 | 1379 days | |
5.53 | 5% |
| Jimmy Shaw | 10/10 | 1632 days | 4.26 | 4% | |
| Wendy Hawkins | 8/10 | 2053 days | |
4.43 | 4% |
| Roger Hawkins | 9/10 | 2053 days | |
4.43 | 4% |
| Tanja Schlagermann | 10/10 | 2060 days | |
4.41 | 4% |
| Alexander Mukasa | 10/10 | 2060 days | |
4.41 | 4% |
| Erik Muchembled | 10/10 | 2062 days | |
4.41 | 4% |
| Andrea Lang | 8/10 | 2064 days | |
4.41 | 4% |
| Xtian_P | 10/10 | 2148 days | 3.56 | 3% | |
| michellephil | 10/10 | 2209 days | 3.47 | 3% | |
| nztintin | 10/10 | 2423 days | 3.18 | 2% | |
| mandd | 10/10 | 2423 days | 3.18 | 2% | |
| Orlando | 9/10 | 2435 days | |
3.8 | 3% |
| Uwe Herrdum | 9/10 | 2439 days | |
3.79 | 3% |
| Francis Corrigan | 9/10 | 2453 days | |
3.77 | 3% |
| John & Vicki | 9/10 | 2530 days | |
3.64 | 3% |
| G Tulloch | 9/10 | 2752 days | |
3.28 | 3% |
| Edward Marhi | 8/10 | 2755 days | |
3.27 | 3% |
| Robin Adair | 9/10 | 2776 days | |
3.24 | 3% |
| Sandra Schulz | 9/10 | 2783 days | |
3.23 | 3% |
| Derek Puplett | 9/10 | 2793 days | |
3.21 | 3% |
| Martin Current | 9/10 | 2804 days | |
3.19 | 2% |
| Hartmut Vogt | 10/10 | 2805 days | |
3.19 | 2% |
| allesca | 9/10 | 2909 days | 2.52 | 2% | |
| Mary Van | 8/10 | 2970 days | 2.43 | 2% | |
| penz | 9/10 | 3032 days | 2.35 | 2% | |
| victoriauk | 8/10 | 3062 days | |
2.77 | 2% |
| Susanne Strassmann | 6/10 | 3160 days | |
2.61 | 2% |
| M Sicard | 9/10 | 3164 days | |
2.6 | 2% |
| Lasse Olesen | 9/10 | 3175 days | |
2.58 | 2% |
| Keith Wilde | 8/10 | 3177 days | |
2.58 | 2% |
| Sarah Goeckener | 9/10 | 3254 days | |
2.45 | 2% |
| katharina | 10/10 | 3254 days | |
2.45 | 2% |
| Katrin Wennin | 8/10 | 3255 days | |
2.45 | 2% |
| Thorben Thede | 9/10 | 3256 days | |
2.45 | 2% |
| Roma | 10/10 | 3267 days | |
2.43 | 2% |
| HairyHaggis | 10/10 | 3274 days | 2.02 | 1% | |
| Ronny | 6/10 | 3493 days | |
2.06 | 1% |
| ChristinaV | 10/10 | 3497 days | |
2.05 | 1% |
| JudithLehr | 6/10 | 3500 days | |
2.05 | 1% |
| Steven | 10/10 | 3504 days | |
2.04 | 1% |
| StijnH | 8/10 | 3505 days | |
2.04 | 1% |
| FramiskaH | 8/10 | 3506 days | |
2.04 | 1% |
| StefanGermany1 | 8/10 | 3506 days | |
2.04 | 1% |
| JaninaF | 10/10 | 3506 days | |
2.04 | 1% |
| Tatjane | 9/10 | 3519 days | |
2.02 | 1% |
| XaviG | 9/10 | 3522 days | |
2.01 | 1% |
| JesusB | 7/10 | 3522 days | |
2.01 | 1% |
| Denk | 8/10 | 3550 days | |
1.96 | 1% |
| Katie Mitchell | 10/10 | 3639 days | 1.52 | 1% | |
| Ben Ackland | 8/10 | 3875 days | |
1.43 | 1% |
| Tessa McCormick | 8/10 | 3885 days | |
1.41 | 1% |
| John Beirne | 10/10 | 4242 days | |
0.83 | 0% |
| ranker_110 | 7/10 | 4246 days | |
0.82 | 0% |
| Christine | 10/10 | 4251 days | |
0.81 | 0% |
| Helle | 9/10 | 4253 days | |
0.81 | 0% |
| John | 7/10 | 4253 days | |
0.81 | 0% |
| Reggie | 10/10 | 4254 days | |
0.81 | 0% |
| Dave | 9/10 | 4265 days | |
0.79 | 0% |
| Beate | 8/10 | 4266 days | |
0.79 | 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
-1.94% 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 364 days.
The Akaroa Dolphins experience has been adjusted for 97 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 94 | -1.88% |
| 95 | -1.90% |
| 96 | -1.92% |
| 97 | -1.94% |
| 98 | -1.96% |
| 99 | -1.98% |
| 100 | -2.00% |
| … | … |
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.