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
92.21%
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 | 326 days | 83.16 | 100% | |
| Mike Dw | 9/10 | 442 days |  |
82.85 | 100% |
| Nolwen | 9/10 | 802 days | |
22.32 | 26% |
| The Beans | 10/10 | 811 days | 17.78 | 21% | |
| Ross D | 10/10 | 816 days | |
20.8 | 24% |
| Peter Passlack | 10/10 | 819 days | 17.07 | 20% | |
| Chea Hao Wong | 10/10 | 872 days | 12.88 | 15% | |
| Caroline Shaw | 10/10 | 1041 days | |
6.55 | 7% |
| Pierre Mathis | 10/10 | 1052 days | |
6.35 | 7% |
| Brenda Oomen | 10/10 | 1055 days | |
6.3 | 7% |
| Estelle Daniel | 10/10 | 1059 days | 5.21 | 6% | |
| Kim-Lara | 8/10 | 1074 days | |
6.08 | 7% |
| Tamara | 10/10 | 1088 days | |
6.01 | 7% |
| Sandra P | 10/10 | 1116 days | 4.97 | 5% | |
| Marie Schmid | 10/10 | 1443 days | |
5.43 | 6% |
| Angie Cairns | 10/10 | 1473 days | |
5.38 | 6% |
| Jimmy Shaw | 10/10 | 1726 days | 4.14 | 4% | |
| Wendy Hawkins | 8/10 | 2147 days | |
4.27 | 4% |
| Roger Hawkins | 9/10 | 2147 days | |
4.27 | 4% |
| Tanja Schlagermann | 10/10 | 2154 days | |
4.26 | 4% |
| Alexander Mukasa | 10/10 | 2154 days | |
4.26 | 4% |
| Erik Muchembled | 10/10 | 2156 days | |
4.26 | 4% |
| Andrea Lang | 8/10 | 2158 days | |
4.25 | 4% |
| Xtian_P | 10/10 | 2242 days | 3.43 | 3% | |
| michellephil | 10/10 | 2303 days | 3.35 | 3% | |
| nztintin | 10/10 | 2517 days | 3.05 | 3% | |
| mandd | 10/10 | 2517 days | 3.05 | 3% | |
| Orlando | 9/10 | 2529 days | |
3.64 | 4% |
| Uwe Herrdum | 9/10 | 2533 days | |
3.64 | 4% |
| Francis Corrigan | 9/10 | 2547 days | |
3.61 | 4% |
| John & Vicki | 9/10 | 2624 days | |
3.49 | 3% |
| G Tulloch | 9/10 | 2846 days | |
3.12 | 3% |
| Edward Marhi | 8/10 | 2849 days | |
3.12 | 3% |
| Robin Adair | 9/10 | 2870 days | |
3.08 | 3% |
| Sandra Schulz | 9/10 | 2877 days | |
3.07 | 3% |
| Derek Puplett | 9/10 | 2887 days | |
3.05 | 3% |
| Martin Current | 9/10 | 2898 days | |
3.04 | 3% |
| Hartmut Vogt | 10/10 | 2899 days | |
3.03 | 3% |
| allesca | 9/10 | 3003 days | 2.39 | 2% | |
| Mary Van | 8/10 | 3064 days | 2.3 | 2% | |
| penz | 9/10 | 3126 days | 2.22 | 2% | |
| victoriauk | 8/10 | 3156 days | |
2.61 | 2% |
| Susanne Strassmann | 6/10 | 3254 days | |
2.45 | 2% |
| M Sicard | 9/10 | 3258 days | |
2.44 | 2% |
| Lasse Olesen | 9/10 | 3269 days | |
2.43 | 2% |
| Keith Wilde | 8/10 | 3271 days | |
2.42 | 2% |
| Sarah Goeckener | 9/10 | 3348 days | |
2.3 | 2% |
| katharina | 10/10 | 3348 days | |
2.3 | 2% |
| Katrin Wennin | 8/10 | 3349 days | |
2.29 | 2% |
| Thorben Thede | 9/10 | 3350 days | |
2.29 | 2% |
| Roma | 10/10 | 3361 days | |
2.28 | 2% |
| HairyHaggis | 10/10 | 3368 days | 1.89 | 2% | |
| Ronny | 6/10 | 3587 days | |
1.9 | 2% |
| ChristinaV | 10/10 | 3591 days | |
1.9 | 2% |
| JudithLehr | 6/10 | 3594 days | |
1.89 | 2% |
| Steven | 10/10 | 3598 days | |
1.89 | 2% |
| StijnH | 8/10 | 3599 days | |
1.88 | 2% |
| FramiskaH | 8/10 | 3600 days | |
1.88 | 2% |
| StefanGermany1 | 8/10 | 3600 days | |
1.88 | 2% |
| JaninaF | 10/10 | 3600 days | |
1.88 | 2% |
| Tatjane | 9/10 | 3613 days | |
1.86 | 1% |
| XaviG | 9/10 | 3616 days | |
1.86 | 1% |
| JesusB | 7/10 | 3616 days | |
1.86 | 1% |
| Denk | 8/10 | 3644 days | |
1.81 | 1% |
| Katie Mitchell | 10/10 | 3733 days | 1.39 | 1% | |
| Ben Ackland | 8/10 | 3969 days | |
1.28 | 1% |
| Tessa McCormick | 8/10 | 3979 days | |
1.26 | 1% |
| John Beirne | 10/10 | 4336 days | |
0.67 | 0% |
| ranker_110 | 7/10 | 4340 days | |
0.67 | 0% |
| Christine | 10/10 | 4345 days | |
0.66 | 0% |
| Helle | 9/10 | 4347 days | |
0.65 | 0% |
| John | 7/10 | 4347 days | |
0.65 | 0% |
| Reggie | 10/10 | 4348 days | |
0.65 | 0% |
| Dave | 9/10 | 4359 days | |
0.63 | 0% |
| Beate | 8/10 | 4360 days | |
0.63 | 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
-3.82% 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 191 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 188 | -3.76% |
| 189 | -3.78% |
| 190 | -3.80% |
| 191 | -3.82% |
| 192 | -3.84% |
| 193 | -3.86% |
| 194 | -3.88% |
| … | … |
Final Ranking Score
88%
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.