Hi, 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 Oamaru Blue Penguin Colony.
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.
Oamaru Blue Penguin Colony
Valid Reviews
125 Valid Reviews
The Oamaru Blue Penguin Colony experience has a total of 126 reviews. There are 125 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 125 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 28 |
|
22% |
| 9/10 | 30 |
|
24% |
| 8/10 | 19 |
|
15% |
| 7/10 | 15 |
|
12% |
| 6/10 | 8 |
|
6% |
| 5/10 | 9 |
|
7% |
| 4/10 | 9 |
|
7% |
| 3/10 | 2 |
|
2% |
| 2/10 | 3 |
|
2% |
| 1/10 | 2 |
|
2% |
76.00% Average
The raw data average (mean) for all the Oamaru Blue Penguin Colony valid reviews is 76.00% and is based on 125 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
109 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 125 valid reviews, the experience has 109 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 109 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 23 |
|
21% |
| 9/10 | 27 |
|
25% |
| 8/10 | 17 |
|
16% |
| 7/10 | 14 |
|
13% |
| 6/10 | 7 |
|
6% |
| 5/10 | 8 |
|
7% |
| 4/10 | 6 |
|
6% |
| 3/10 | 2 |
|
2% |
| 2/10 | 3 |
|
3% |
| 1/10 | 2 |
|
2% |
75.87% Average
The raw data average (mean) for all the Oamaru Blue Penguin Colony face-to-face reviews is 75.87% and is based on 109 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
79.80%
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 | Relative Weight |
|---|---|---|---|
| Dina Schurer | 7/10 | 3296 days | 98% |
| J P Schurer | 7/10 | 3296 days | 98% |
| Dries | 9/10 | 3336 days | 100% |
| Jasmine Rogers | 10/10 | 3349 days | 100% |
| Sophie | 10/10 | 3356 days | 99% |
| Nicholas Strozza | 8/10 | 3389 days | 94% |
| Jill Stebbing | 9/10 | 3612 days | 73% |
| Lothen | 8/10 | 3633 days | 71% |
| Lea Watterson | 9/10 | 3655 days | 69% |
| James Esele | 7/10 | 3709 days | 60% |
| Philipp | 2/10 | 3717 days | 29% |
| Coralie Ambrosino | 8/10 | 3975 days | 38% |
| Christoph | 10/10 | 3978 days | 39% |
| Fanny DeBon | 8/10 | 4076 days | 28% |
| Hubert | 10/10 | 4086 days | 28% |
| Sagi | 2/10 | 4357 days | 1% |
| Henrik Suefke | 10/10 | 4375 days | 0% |
| Kiernan Matthew | 7/10 | 4380 days | 46% |
| Alexis Redor | 9/10 | 4384 days | 49% |
| Lars Borgaa | 4/10 | 4393 days | 32% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4687 days | 32% |
| Glenn Surzur | 4/10 | 4714 days | 32% |
| Michael Walker | 10/10 | 4720 days | 49% |
| Lorraine Walker | 9/10 | 4720 days | 49% |
| Michael Nolan | 10/10 | 4746 days | 49% |
| Jim Woodruff | 10/10 | 4746 days | 49% |
| Lis Bon | 10/10 | 4777 days | 49% |
| Liam Day | 10/10 | 4794 days | 49% |
| Auger | 9/10 | 4815 days | 49% |
| Auger | 9/10 | 4815 days | 49% |
| C Schaap | 8/10 | 4819 days | 48% |
| Marjo Cousijn | 9/10 | 4825 days | 49% |
| gareth williams | 5/10 | 4869 days | 37% |
| Dagette | 8/10 | 4869 days | 48% |
| Wright | 10/10 | 5087 days | 49% |
| Emma Bagguley | 4/10 | 5090 days | 32% |
| Hazel & Alan Damerell | 10/10 | 5094 days | 49% |
| Michael & Rosemary Smith | 9/10 | 5098 days | 49% |
| Koster | 10/10 | 5098 days | 49% |
| John A Jerome | 6/10 | 5098 days | 42% |
| Katrawa | 5/10 | 5105 days | 37% |
| Jensen Bresbenbeek | 7/10 | 5175 days | 46% |
| Rebecca & Hugh Small | 5/10 | 5184 days | 37% |
| Steve | 3/10 | 5188 days | 27% |
| topsy08 | 7/10 | 5418 days | 46% |
| Gunter | 9/10 | 5432 days | 49% |
| Tim Laurent | 5/10 | 5440 days | 37% |
| Keith Ogley | 6/10 | 5443 days | 42% |
| Lynda Hutchins | 10/10 | 5443 days | 49% |
| Louise van der Hyden | 4/10 | 5447 days | 32% |
| Katie Mitchell | 9/10 | 5449 days | 49% |
| Gerhard | 8/10 | 5450 days | 48% |
| Kasten | 8/10 | 5451 days | 48% |
| C P Lawrence | 4/10 | 5453 days | 32% |
| Bucher Weruer | 9/10 | 5453 days | 49% |
| Naomi Kosteaman | 9/10 | 5453 days | 49% |
| Rian Bach | 5/10 | 5455 days | 37% |
| Josef & Christine Evers | 8/10 | 5458 days | 48% |
| Frank Schedler | 5/10 | 5460 days | 37% |
| Gerd Pagel | 7/10 | 5462 days | 46% |
| Charlie | 9/10 | 5463 days | 49% |
| Dana Pagliarini | 5/10 | 5465 days | 37% |
| Andy Martin | 8/10 | 5466 days | 48% |
| Julia | 5/10 | 5469 days | 37% |
| Doris Neuber | 7/10 | 5476 days | 46% |
| Teknik151 | 4/10 | 5477 days | 32% |
| Warris2500 | 4/10 | 5661 days | 32% |
| Versteeg | 7/10 | 5735 days | 46% |
| Victoria Slater | 6/10 | 5788 days | 42% |
| Bowness | 10/10 | 5801 days | 49% |
| David B | 9/10 | 5809 days | 49% |
| Sievers | 9/10 | 5817 days | 49% |
| Don & Alice | 9/10 | 5818 days | 49% |
| Amanda Iavarone | 10/10 | 5820 days | 49% |
| Sheila Morgan | 10/10 | 5823 days | 49% |
| Wilbert Germ | 9/10 | 5827 days | 49% |
| Ronny | 6/10 | 5828 days | 42% |
| Annette Schmitt | 4/10 | 5836 days | 32% |
| Annie | 7/10 | 5836 days | 46% |
| Nadine Schaee | 6/10 | 5839 days | 42% |
| Terry Phillips | 8/10 | 5839 days | 48% |
| Chance McGuire | 10/10 | 5842 days | 49% |
| Richard Pearson | 6/10 | 5852 days | 42% |
| cees juffermans | 3/10 | 5855 days | 27% |
| wenerz | 1/10 | 5889 days | 20% |
| Werner Zuis | 1/10 | 5889 days | 20% |
| alasiac | 10/10 | 5904 days | 49% |
| Mark Jenkins | 5/10 | 5912 days | 37% |
| Silvana Thom | 10/10 | 5914 days | 49% |
| Alexis De Wilde | 7/10 | 5914 days | 46% |
| Cyriel Schacken | 7/10 | 5914 days | 46% |
| Simon Bartholomew | 10/10 | 5916 days | 49% |
| Marcel Schleinkcfer | 10/10 | 5916 days | 49% |
| Thorben Thede | 9/10 | 5916 days | 49% |
| Roma | 9/10 | 5927 days | 49% |
| brianp | 8/10 | 6020 days | 48% |
| Rose and Jess Damon and Esler | 6/10 | 6057 days | 42% |
| OliverG1 | 9/10 | 6136 days | 49% |
| Anji Sprinks | 8/10 | 6145 days | 48% |
| Ger | 6/10 | 6146 days | 42% |
| JanW | 8/10 | 6160 days | 48% |
| Ian | 8/10 | 6171 days | 48% |
| Tatjane | 2/10 | 6179 days | 22% |
| ChristineM | 10/10 | 6181 days | 49% |
| SebastianGermany1 | 9/10 | 6183 days | 49% |
| Paul | 9/10 | 6191 days | 49% |
| SiegfriedL | 10/10 | 6203 days | 49% |
| purplekat99 | 9/10 | 6238 days | 49% |
| Klaus | 7/10 | 6539 days | 46% |
| Volders | 10/10 | 6541 days | 49% |
| Dot & Gordon Quaid | 9/10 | 6554 days | 49% |
| Roger & Margaret | 8/10 | 6562 days | 48% |
| John Howlett | 7/10 | 6564 days | 46% |
| Dupre | 7/10 | 6617 days | 46% |
| Paul Cowie | 9/10 | 6623 days | 49% |
| Floren | 9/10 | 6637 days | 49% |
| Killerblow | 10/10 | 6645 days | 49% |
| Lisbeth Johansson | 8/10 | 6750 days | 48% |
| TeamFlorida | 10/10 | 6885 days | 49% |
| John Beirne | 10/10 | 6902 days | 49% |
| Pete | 9/10 | 6902 days | 49% |
| Anne | 8/10 | 6902 days | 48% |
| Anna | 9/10 | 6907 days | 49% |
| Mitch | 8/10 | 6913 days | 48% |
| Ian | 9/10 | 6930 days | 49% |
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 Oamaru Blue Penguin Colony experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-4.14% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 49 days. However the Oamaru Blue Penguin Colony 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 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.
The Oamaru Blue Penguin Colony experience has been adjusted for 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -4.08% |
| 198 | -4.10% |
| 199 | -4.12% |
| 200 | -4.14% |
| 201 | -4.16% |
| 202 | -4.18% |
| 203 | -4.20% |
| … | … |
Balancing Adjustment
4.39% Adjustment
Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.
You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.
We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.
Final Ranking Score
80%
The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.