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
93.14%
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 | 168 days | 95.53 | 91% | |
| Mike Dw | 9/10 | 284 days |  |
104.66 | 100% |
| Nolwen | 9/10 | 644 days | |
44.68 | 42% |
| The Beans | 10/10 | 653 days | 35.96 | 34% | |
| Ross D | 10/10 | 658 days | |
42.31 | 40% |
| Peter Passlack | 10/10 | 661 days | 34.85 | 33% | |
| Chea Hao Wong | 10/10 | 714 days | 28.0 | 26% | |
| Caroline Shaw | 10/10 | 883 days | |
14.55 | 13% |
| Pierre Mathis | 10/10 | 894 days | |
13.68 | 12% |
| Brenda Oomen | 10/10 | 897 days | |
13.45 | 12% |
| Estelle Daniel | 10/10 | 901 days | 10.96 | 10% | |
| Kim-Lara | 8/10 | 916 days | |
12.09 | 11% |
| Tamara | 10/10 | 930 days | |
11.18 | 10% |
| Sandra P | 10/10 | 958 days | 7.97 | 7% | |
| Marie Schmid | 10/10 | 1285 days | |
5.69 | 5% |
| Angie Cairns | 10/10 | 1315 days | |
5.64 | 5% |
| Jimmy Shaw | 10/10 | 1568 days | 4.35 | 3% | |
| Wendy Hawkins | 8/10 | 1989 days | |
4.53 | 4% |
| Roger Hawkins | 9/10 | 1989 days | |
4.53 | 4% |
| Tanja Schlagermann | 10/10 | 1996 days | |
4.52 | 3% |
| Alexander Mukasa | 10/10 | 1996 days | |
4.52 | 3% |
| Erik Muchembled | 10/10 | 1998 days | |
4.52 | 3% |
| Andrea Lang | 8/10 | 2000 days | |
4.51 | 3% |
| Xtian_P | 10/10 | 2084 days | 3.65 | 3% | |
| michellephil | 10/10 | 2145 days | 3.56 | 3% | |
| nztintin | 10/10 | 2359 days | 3.27 | 2% | |
| mandd | 10/10 | 2359 days | 3.27 | 2% | |
| Orlando | 9/10 | 2371 days | |
3.9 | 3% |
| Uwe Herrdum | 9/10 | 2375 days | |
3.9 | 3% |
| Francis Corrigan | 9/10 | 2389 days | |
3.87 | 3% |
| John & Vicki | 9/10 | 2466 days | |
3.75 | 3% |
| G Tulloch | 9/10 | 2688 days | |
3.38 | 2% |
| Edward Marhi | 8/10 | 2691 days | |
3.38 | 2% |
| Robin Adair | 9/10 | 2712 days | |
3.34 | 2% |
| Sandra Schulz | 9/10 | 2719 days | |
3.33 | 2% |
| Derek Puplett | 9/10 | 2729 days | |
3.31 | 2% |
| Martin Current | 9/10 | 2740 days | |
3.3 | 2% |
| Hartmut Vogt | 10/10 | 2741 days | |
3.29 | 2% |
| allesca | 9/10 | 2845 days | 2.6 | 2% | |
| Mary Van | 8/10 | 2906 days | 2.52 | 2% | |
| penz | 9/10 | 2968 days | 2.43 | 1% | |
| victoriauk | 8/10 | 2998 days | |
2.87 | 2% |
| Susanne Strassmann | 6/10 | 3096 days | |
2.71 | 2% |
| M Sicard | 9/10 | 3100 days | |
2.7 | 2% |
| Lasse Olesen | 9/10 | 3111 days | |
2.69 | 2% |
| Keith Wilde | 8/10 | 3113 days | |
2.68 | 2% |
| Sarah Goeckener | 9/10 | 3190 days | |
2.56 | 2% |
| katharina | 10/10 | 3190 days | |
2.56 | 2% |
| Katrin Wennin | 8/10 | 3191 days | |
2.55 | 2% |
| Thorben Thede | 9/10 | 3192 days | |
2.55 | 2% |
| Roma | 10/10 | 3203 days | |
2.53 | 2% |
| HairyHaggis | 10/10 | 3210 days | 2.1 | 1% | |
| Ronny | 6/10 | 3429 days | |
2.16 | 1% |
| ChristinaV | 10/10 | 3434 days | |
2.16 | 1% |
| JudithLehr | 6/10 | 3436 days | |
2.15 | 1% |
| Steven | 10/10 | 3441 days | |
2.14 | 1% |
| StijnH | 8/10 | 3441 days | |
2.14 | 1% |
| FramiskaH | 8/10 | 3442 days | |
2.14 | 1% |
| StefanGermany1 | 8/10 | 3442 days | |
2.14 | 1% |
| JaninaF | 10/10 | 3442 days | |
2.14 | 1% |
| Tatjane | 9/10 | 3456 days | |
2.12 | 1% |
| XaviG | 9/10 | 3458 days | |
2.12 | 1% |
| JesusB | 7/10 | 3458 days | |
2.12 | 1% |
| Denk | 8/10 | 3486 days | |
2.07 | 1% |
| Katie Mitchell | 10/10 | 3575 days | 1.6 | 1% | |
| Ben Ackland | 8/10 | 3811 days | |
1.54 | 1% |
| Tessa McCormick | 8/10 | 3821 days | |
1.52 | 1% |
| John Beirne | 10/10 | 4178 days | |
0.93 | 0% |
| ranker_110 | 7/10 | 4182 days | |
0.93 | 0% |
| Christine | 10/10 | 4187 days | |
0.92 | 0% |
| Helle | 9/10 | 4189 days | |
0.91 | 0% |
| John | 7/10 | 4189 days | |
0.91 | 0% |
| Reggie | 10/10 | 4190 days | |
0.91 | 0% |
| Dave | 9/10 | 4201 days | |
0.89 | 0% |
| Beate | 8/10 | 4202 days | |
0.89 | 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
-0.66% 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 33 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 30 | -0.60% |
| 31 | -0.62% |
| 32 | -0.64% |
| 33 | -0.66% |
| 34 | -0.68% |
| 35 | -0.70% |
| 36 | -0.72% |
| … | … |
Final Ranking Score
92%
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.