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
74 Valid Reviews
The Akaroa Dolphins experience has a total of 75 reviews. There are 74 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 74 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 31 |
|
42% |
| 9/10 | 22 |
|
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% |
90.14% Average
The raw data average (mean) for all the Akaroa Dolphins valid reviews is 90.14% and is based on 74 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 74 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
94.22%
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 |
|---|---|---|---|---|---|
| Mike Dw | 9/10 | 201 days |  |
112.32 | 100% |
| Nolwen | 9/10 | 561 days | |
60.22 | 53% |
| The Beans | 10/10 | 570 days | 48.68 | 43% | |
| Ross D | 10/10 | 575 days | |
57.42 | 51% |
| Peter Passlack | 10/10 | 578 days | 47.36 | 42% | |
| Chea Hao Wong | 10/10 | 631 days | 39.12 | 34% | |
| Caroline Shaw | 10/10 | 800 days | |
22.55 | 19% |
| Pierre Mathis | 10/10 | 811 days | |
21.34 | 18% |
| Brenda Oomen | 10/10 | 814 days | |
21.01 | 18% |
| Estelle Daniel | 10/10 | 818 days | 17.16 | 14% | |
| Kim-Lara | 8/10 | 833 days | |
19.05 | 16% |
| Tamara | 10/10 | 847 days | |
17.7 | 15% |
| Sandra P | 10/10 | 875 days | 12.67 | 10% | |
| Marie Schmid | 10/10 | 1202 days | |
5.82 | 4% |
| Angie Cairns | 10/10 | 1232 days | |
5.77 | 4% |
| Jimmy Shaw | 10/10 | 1485 days | 4.47 | 3% | |
| Wendy Hawkins | 8/10 | 1906 days | |
4.67 | 3% |
| Roger Hawkins | 9/10 | 1906 days | |
4.67 | 3% |
| Tanja Schlagermann | 10/10 | 1913 days | |
4.66 | 3% |
| Alexander Mukasa | 10/10 | 1913 days | |
4.66 | 3% |
| Erik Muchembled | 10/10 | 1915 days | |
4.65 | 3% |
| Andrea Lang | 8/10 | 1917 days | |
4.65 | 3% |
| Xtian_P | 10/10 | 2001 days | 3.76 | 2% | |
| michellephil | 10/10 | 2062 days | 3.68 | 2% | |
| nztintin | 10/10 | 2276 days | 3.38 | 2% | |
| mandd | 10/10 | 2276 days | 3.38 | 2% | |
| Orlando | 9/10 | 2288 days | |
4.04 | 3% |
| Uwe Herrdum | 9/10 | 2292 days | |
4.03 | 3% |
| Francis Corrigan | 9/10 | 2306 days | |
4.01 | 3% |
| John & Vicki | 9/10 | 2383 days | |
3.88 | 3% |
| G Tulloch | 9/10 | 2605 days | |
3.52 | 2% |
| Edward Marhi | 8/10 | 2608 days | |
3.51 | 2% |
| Robin Adair | 9/10 | 2629 days | |
3.48 | 2% |
| Sandra Schulz | 9/10 | 2636 days | |
3.47 | 2% |
| Derek Puplett | 9/10 | 2646 days | |
3.45 | 2% |
| Martin Current | 9/10 | 2657 days | |
3.43 | 2% |
| Hartmut Vogt | 10/10 | 2658 days | |
3.43 | 2% |
| allesca | 9/10 | 2762 days | 2.72 | 2% | |
| Mary Van | 8/10 | 2823 days | 2.63 | 1% | |
| penz | 9/10 | 2885 days | 2.55 | 1% | |
| victoriauk | 8/10 | 2915 days | |
3.01 | 2% |
| Susanne Strassmann | 6/10 | 3013 days | |
2.85 | 2% |
| M Sicard | 9/10 | 3017 days | |
2.84 | 2% |
| Lasse Olesen | 9/10 | 3028 days | |
2.82 | 2% |
| Keith Wilde | 8/10 | 3030 days | |
2.82 | 2% |
| Sarah Goeckener | 9/10 | 3107 days | |
2.69 | 1% |
| katharina | 10/10 | 3107 days | |
2.69 | 1% |
| Katrin Wennin | 8/10 | 3108 days | |
2.69 | 1% |
| Thorben Thede | 9/10 | 3109 days | |
2.69 | 1% |
| Roma | 10/10 | 3120 days | |
2.67 | 1% |
| HairyHaggis | 10/10 | 3127 days | 2.22 | 1% | |
| Ronny | 6/10 | 3346 days | |
2.3 | 1% |
| ChristinaV | 10/10 | 3350 days | |
2.29 | 1% |
| JudithLehr | 6/10 | 3353 days | |
2.29 | 1% |
| Steven | 10/10 | 3357 days | |
2.28 | 1% |
| StijnH | 8/10 | 3358 days | |
2.28 | 1% |
| FramiskaH | 8/10 | 3359 days | |
2.28 | 1% |
| StefanGermany1 | 8/10 | 3359 days | |
2.28 | 1% |
| JaninaF | 10/10 | 3359 days | |
2.28 | 1% |
| Tatjane | 9/10 | 3372 days | |
2.26 | 1% |
| XaviG | 9/10 | 3375 days | |
2.25 | 1% |
| JesusB | 7/10 | 3375 days | |
2.25 | 1% |
| Denk | 8/10 | 3403 days | |
2.21 | 1% |
| Katie Mitchell | 10/10 | 3492 days | 1.72 | 1% | |
| Ben Ackland | 8/10 | 3728 days | |
1.67 | 1% |
| Tessa McCormick | 8/10 | 3738 days | |
1.66 | 1% |
| John Beirne | 10/10 | 4095 days | |
1.07 | 0% |
| ranker_110 | 7/10 | 4099 days | |
1.06 | 0% |
| Christine | 10/10 | 4104 days | |
1.05 | 0% |
| Helle | 9/10 | 4106 days | |
1.05 | 0% |
| John | 7/10 | 4106 days | |
1.05 | 0% |
| Reggie | 10/10 | 4107 days | |
1.05 | 0% |
| Dave | 9/10 | 4118 days | |
1.03 | 0% |
| Beate | 8/10 | 4119 days | |
1.03 | 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
-3.80% 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 190 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 187 | -3.74% |
| 188 | -3.76% |
| 189 | -3.78% |
| 190 | -3.80% |
| 191 | -3.82% |
| 192 | -3.84% |
| 193 | -3.86% |
| … | … |
Final Ranking Score
90%
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.