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
79.63%
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 | 3336 days | 97% |
| J P Schurer | 7/10 | 3336 days | 97% |
| Dries | 9/10 | 3376 days | 100% |
| Jasmine Rogers | 10/10 | 3389 days | 100% |
| Sophie | 10/10 | 3396 days | 99% |
| Nicholas Strozza | 8/10 | 3429 days | 92% |
| Jill Stebbing | 9/10 | 3652 days | 65% |
| Lothen | 8/10 | 3673 days | 62% |
| Lea Watterson | 9/10 | 3695 days | 60% |
| James Esele | 7/10 | 3749 days | 48% |
| Philipp | 2/10 | 3757 days | 10% |
| Coralie Ambrosino | 8/10 | 4015 days | 19% |
| Christoph | 10/10 | 4018 days | 20% |
| Fanny DeBon | 8/10 | 4116 days | 7% |
| Hubert | 10/10 | 4126 days | 6% |
| Sagi | 2/10 | 4397 days | 3% |
| Henrik Suefke | 10/10 | 4415 days | 39% |
| Kiernan Matthew | 7/10 | 4420 days | 34% |
| Alexis Redor | 9/10 | 4424 days | 38% |
| Lars Borgaa | 4/10 | 4433 days | 16% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4727 days | 16% |
| Glenn Surzur | 4/10 | 4754 days | 16% |
| Michael Walker | 10/10 | 4760 days | 39% |
| Lorraine Walker | 9/10 | 4760 days | 38% |
| Michael Nolan | 10/10 | 4786 days | 39% |
| Jim Woodruff | 10/10 | 4786 days | 39% |
| Lis Bon | 10/10 | 4817 days | 39% |
| Liam Day | 10/10 | 4834 days | 39% |
| Auger | 9/10 | 4855 days | 38% |
| Auger | 9/10 | 4855 days | 38% |
| C Schaap | 8/10 | 4859 days | 37% |
| Marjo Cousijn | 9/10 | 4865 days | 38% |
| gareth williams | 5/10 | 4909 days | 23% |
| Dagette | 8/10 | 4909 days | 37% |
| Wright | 10/10 | 5127 days | 39% |
| Emma Bagguley | 4/10 | 5130 days | 16% |
| Hazel & Alan Damerell | 10/10 | 5134 days | 39% |
| Michael & Rosemary Smith | 9/10 | 5138 days | 38% |
| Koster | 10/10 | 5138 days | 39% |
| John A Jerome | 6/10 | 5138 days | 30% |
| Katrawa | 5/10 | 5145 days | 23% |
| Jensen Bresbenbeek | 7/10 | 5215 days | 34% |
| Rebecca & Hugh Small | 5/10 | 5224 days | 23% |
| Steve | 3/10 | 5228 days | 9% |
| topsy08 | 7/10 | 5458 days | 34% |
| Gunter | 9/10 | 5472 days | 38% |
| Tim Laurent | 5/10 | 5480 days | 23% |
| Keith Ogley | 6/10 | 5483 days | 30% |
| Lynda Hutchins | 10/10 | 5483 days | 39% |
| Louise van der Hyden | 4/10 | 5487 days | 16% |
| Katie Mitchell | 9/10 | 5489 days | 38% |
| Gerhard | 8/10 | 5490 days | 37% |
| Kasten | 8/10 | 5491 days | 37% |
| C P Lawrence | 4/10 | 5493 days | 16% |
| Bucher Weruer | 9/10 | 5493 days | 38% |
| Naomi Kosteaman | 9/10 | 5493 days | 38% |
| Rian Bach | 5/10 | 5495 days | 23% |
| Josef & Christine Evers | 8/10 | 5498 days | 37% |
| Frank Schedler | 5/10 | 5500 days | 23% |
| Gerd Pagel | 7/10 | 5502 days | 34% |
| Charlie | 9/10 | 5503 days | 38% |
| Dana Pagliarini | 5/10 | 5505 days | 23% |
| Andy Martin | 8/10 | 5506 days | 37% |
| Julia | 5/10 | 5509 days | 23% |
| Doris Neuber | 7/10 | 5516 days | 34% |
| Teknik151 | 4/10 | 5517 days | 16% |
| Warris2500 | 4/10 | 5701 days | 16% |
| Versteeg | 7/10 | 5775 days | 34% |
| Victoria Slater | 6/10 | 5828 days | 30% |
| Bowness | 10/10 | 5841 days | 39% |
| David B | 9/10 | 5849 days | 38% |
| Sievers | 9/10 | 5857 days | 38% |
| Don & Alice | 9/10 | 5858 days | 38% |
| Amanda Iavarone | 10/10 | 5860 days | 39% |
| Sheila Morgan | 10/10 | 5863 days | 39% |
| Wilbert Germ | 9/10 | 5867 days | 38% |
| Ronny | 6/10 | 5868 days | 30% |
| Annette Schmitt | 4/10 | 5876 days | 16% |
| Annie | 7/10 | 5876 days | 34% |
| Nadine Schaee | 6/10 | 5879 days | 30% |
| Terry Phillips | 8/10 | 5879 days | 37% |
| Chance McGuire | 10/10 | 5882 days | 39% |
| Richard Pearson | 6/10 | 5892 days | 30% |
| cees juffermans | 3/10 | 5895 days | 9% |
| wenerz | 1/10 | 5929 days | 0% |
| Werner Zuis | 1/10 | 5929 days | 0% |
| alasiac | 10/10 | 5944 days | 39% |
| Mark Jenkins | 5/10 | 5952 days | 23% |
| Silvana Thom | 10/10 | 5954 days | 39% |
| Alexis De Wilde | 7/10 | 5954 days | 34% |
| Cyriel Schacken | 7/10 | 5954 days | 34% |
| Simon Bartholomew | 10/10 | 5956 days | 39% |
| Marcel Schleinkcfer | 10/10 | 5956 days | 39% |
| Thorben Thede | 9/10 | 5956 days | 38% |
| Roma | 9/10 | 5967 days | 38% |
| brianp | 8/10 | 6060 days | 37% |
| Rose and Jess Damon and Esler | 6/10 | 6097 days | 30% |
| OliverG1 | 9/10 | 6176 days | 38% |
| Anji Sprinks | 8/10 | 6185 days | 37% |
| Ger | 6/10 | 6186 days | 30% |
| JanW | 8/10 | 6200 days | 37% |
| Ian | 8/10 | 6211 days | 37% |
| Tatjane | 2/10 | 6219 days | 3% |
| ChristineM | 10/10 | 6221 days | 39% |
| SebastianGermany1 | 9/10 | 6223 days | 38% |
| Paul | 9/10 | 6231 days | 38% |
| SiegfriedL | 10/10 | 6243 days | 39% |
| purplekat99 | 9/10 | 6278 days | 38% |
| Klaus | 7/10 | 6579 days | 34% |
| Volders | 10/10 | 6581 days | 39% |
| Dot & Gordon Quaid | 9/10 | 6595 days | 38% |
| Roger & Margaret | 8/10 | 6602 days | 37% |
| John Howlett | 7/10 | 6604 days | 34% |
| Dupre | 7/10 | 6657 days | 34% |
| Paul Cowie | 9/10 | 6663 days | 38% |
| Floren | 9/10 | 6677 days | 38% |
| Killerblow | 10/10 | 6685 days | 39% |
| Lisbeth Johansson | 8/10 | 6790 days | 37% |
| TeamFlorida | 10/10 | 6925 days | 39% |
| John Beirne | 10/10 | 6942 days | 39% |
| Pete | 9/10 | 6942 days | 38% |
| Anne | 8/10 | 6942 days | 37% |
| Anna | 9/10 | 6947 days | 38% |
| Mitch | 8/10 | 6953 days | 37% |
| Ian | 9/10 | 6970 days | 38% |
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
-4.03% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 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 | -3.97% |
| 198 | -3.99% |
| 199 | -4.01% |
| 200 | -4.03% |
| 201 | -4.05% |
| 202 | -4.07% |
| 203 | -4.09% |
| … | … |
Balancing Adjustment
4.42% 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.