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
79.47%
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 | 3498 days | 98% |
| J P Schurer | 7/10 | 3498 days | 98% |
| Dries | 9/10 | 3538 days | 100% |
| Jasmine Rogers | 10/10 | 3551 days | 99% |
| Sophie | 10/10 | 3558 days | 98% |
| Nicholas Strozza | 8/10 | 3591 days | 92% |
| Jill Stebbing | 9/10 | 3814 days | 63% |
| Lothen | 8/10 | 3835 days | 60% |
| Lea Watterson | 9/10 | 3857 days | 57% |
| James Esele | 7/10 | 3911 days | 46% |
| Philipp | 2/10 | 3919 days | 16% |
| Coralie Ambrosino | 8/10 | 4177 days | 14% |
| Christoph | 10/10 | 4180 days | 15% |
| Fanny DeBon | 8/10 | 4278 days | 1% |
| Hubert | 10/10 | 4288 days | 0% |
| Sagi | 2/10 | 4559 days | 19% |
| Henrik Suefke | 10/10 | 4577 days | 56% |
| Kiernan Matthew | 7/10 | 4582 days | 52% |
| Alexis Redor | 9/10 | 4586 days | 56% |
| Lars Borgaa | 4/10 | 4595 days | 33% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4889 days | 33% |
| Glenn Surzur | 4/10 | 4916 days | 33% |
| Michael Walker | 10/10 | 4922 days | 56% |
| Lorraine Walker | 9/10 | 4922 days | 56% |
| Michael Nolan | 10/10 | 4948 days | 56% |
| Jim Woodruff | 10/10 | 4948 days | 56% |
| Lis Bon | 10/10 | 4979 days | 56% |
| Liam Day | 10/10 | 4996 days | 56% |
| Auger | 9/10 | 5017 days | 56% |
| Auger | 9/10 | 5017 days | 56% |
| C Schaap | 8/10 | 5021 days | 55% |
| Marjo Cousijn | 9/10 | 5027 days | 56% |
| gareth williams | 5/10 | 5071 days | 40% |
| Dagette | 8/10 | 5071 days | 55% |
| Wright | 10/10 | 5289 days | 56% |
| Emma Bagguley | 4/10 | 5292 days | 33% |
| Hazel & Alan Damerell | 10/10 | 5296 days | 56% |
| Michael & Rosemary Smith | 9/10 | 5300 days | 56% |
| Koster | 10/10 | 5300 days | 56% |
| John A Jerome | 6/10 | 5300 days | 47% |
| Katrawa | 5/10 | 5307 days | 40% |
| Jensen Bresbenbeek | 7/10 | 5377 days | 52% |
| Rebecca & Hugh Small | 5/10 | 5386 days | 40% |
| Steve | 3/10 | 5390 days | 25% |
| topsy08 | 7/10 | 5620 days | 52% |
| Gunter | 9/10 | 5634 days | 56% |
| Tim Laurent | 5/10 | 5642 days | 40% |
| Keith Ogley | 6/10 | 5645 days | 47% |
| Lynda Hutchins | 10/10 | 5645 days | 56% |
| Louise van der Hyden | 4/10 | 5649 days | 33% |
| Katie Mitchell | 9/10 | 5651 days | 56% |
| Gerhard | 8/10 | 5652 days | 55% |
| Kasten | 8/10 | 5653 days | 55% |
| C P Lawrence | 4/10 | 5655 days | 33% |
| Bucher Weruer | 9/10 | 5655 days | 56% |
| Naomi Kosteaman | 9/10 | 5655 days | 56% |
| Rian Bach | 5/10 | 5657 days | 40% |
| Josef & Christine Evers | 8/10 | 5660 days | 55% |
| Frank Schedler | 5/10 | 5662 days | 40% |
| Gerd Pagel | 7/10 | 5664 days | 52% |
| Charlie | 9/10 | 5665 days | 56% |
| Dana Pagliarini | 5/10 | 5667 days | 40% |
| Andy Martin | 8/10 | 5668 days | 55% |
| Julia | 5/10 | 5671 days | 40% |
| Doris Neuber | 7/10 | 5678 days | 52% |
| Teknik151 | 4/10 | 5679 days | 33% |
| Warris2500 | 4/10 | 5863 days | 33% |
| Versteeg | 7/10 | 5937 days | 52% |
| Victoria Slater | 6/10 | 5990 days | 47% |
| Bowness | 10/10 | 6003 days | 56% |
| David B | 9/10 | 6011 days | 56% |
| Sievers | 9/10 | 6019 days | 56% |
| Don & Alice | 9/10 | 6020 days | 56% |
| Amanda Iavarone | 10/10 | 6022 days | 56% |
| Sheila Morgan | 10/10 | 6025 days | 56% |
| Wilbert Germ | 9/10 | 6029 days | 56% |
| Ronny | 6/10 | 6030 days | 47% |
| Annette Schmitt | 4/10 | 6038 days | 33% |
| Annie | 7/10 | 6038 days | 52% |
| Nadine Schaee | 6/10 | 6041 days | 47% |
| Terry Phillips | 8/10 | 6041 days | 55% |
| Chance McGuire | 10/10 | 6044 days | 56% |
| Richard Pearson | 6/10 | 6054 days | 47% |
| cees juffermans | 3/10 | 6057 days | 25% |
| wenerz | 1/10 | 6091 days | 16% |
| Werner Zuis | 1/10 | 6091 days | 16% |
| alasiac | 10/10 | 6106 days | 56% |
| Mark Jenkins | 5/10 | 6114 days | 40% |
| Silvana Thom | 10/10 | 6116 days | 56% |
| Alexis De Wilde | 7/10 | 6116 days | 52% |
| Cyriel Schacken | 7/10 | 6116 days | 52% |
| Simon Bartholomew | 10/10 | 6118 days | 56% |
| Marcel Schleinkcfer | 10/10 | 6118 days | 56% |
| Thorben Thede | 9/10 | 6118 days | 56% |
| Roma | 9/10 | 6129 days | 56% |
| brianp | 8/10 | 6222 days | 55% |
| Rose and Jess Damon and Esler | 6/10 | 6259 days | 47% |
| OliverG1 | 9/10 | 6338 days | 56% |
| Anji Sprinks | 8/10 | 6347 days | 55% |
| Ger | 6/10 | 6348 days | 47% |
| JanW | 8/10 | 6362 days | 55% |
| Ian | 8/10 | 6373 days | 55% |
| Tatjane | 2/10 | 6381 days | 19% |
| ChristineM | 10/10 | 6383 days | 56% |
| SebastianGermany1 | 9/10 | 6385 days | 56% |
| Paul | 9/10 | 6393 days | 56% |
| SiegfriedL | 10/10 | 6405 days | 56% |
| purplekat99 | 9/10 | 6440 days | 56% |
| Klaus | 7/10 | 6741 days | 52% |
| Volders | 10/10 | 6743 days | 56% |
| Dot & Gordon Quaid | 9/10 | 6757 days | 56% |
| Roger & Margaret | 8/10 | 6764 days | 55% |
| John Howlett | 7/10 | 6766 days | 52% |
| Dupre | 7/10 | 6819 days | 52% |
| Paul Cowie | 9/10 | 6825 days | 56% |
| Floren | 9/10 | 6839 days | 56% |
| Killerblow | 10/10 | 6847 days | 56% |
| Lisbeth Johansson | 8/10 | 6952 days | 55% |
| TeamFlorida | 10/10 | 7087 days | 56% |
| John Beirne | 10/10 | 7104 days | 56% |
| Pete | 9/10 | 7104 days | 56% |
| Anne | 8/10 | 7104 days | 55% |
| Anna | 9/10 | 7109 days | 56% |
| Mitch | 8/10 | 7115 days | 55% |
| Ian | 9/10 | 7132 days | 56% |
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
-2.38% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 109 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 | -2.34% |
| 198 | -2.36% |
| 199 | -2.37% |
| 200 | -2.38% |
| 201 | -2.39% |
| 202 | -2.40% |
| 203 | -2.42% |
| … | … |
Balancing Adjustment
3.89% 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
81%
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.