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
79.96%
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 | 3243 days | 97% |
| J P Schurer | 7/10 | 3243 days | 97% |
| Dries | 9/10 | 3283 days | 100% |
| Jasmine Rogers | 10/10 | 3296 days | 100% |
| Sophie | 10/10 | 3303 days | 99% |
| Nicholas Strozza | 8/10 | 3336 days | 94% |
| Jill Stebbing | 9/10 | 3559 days | 74% |
| Lothen | 8/10 | 3580 days | 72% |
| Lea Watterson | 9/10 | 3602 days | 70% |
| James Esele | 7/10 | 3656 days | 61% |
| Philipp | 2/10 | 3664 days | 28% |
| Coralie Ambrosino | 8/10 | 3922 days | 40% |
| Christoph | 10/10 | 3925 days | 40% |
| Fanny DeBon | 8/10 | 4023 days | 31% |
| Hubert | 10/10 | 4033 days | 30% |
| Sagi | 2/10 | 4304 days | 1% |
| Henrik Suefke | 10/10 | 4322 days | 3% |
| Kiernan Matthew | 7/10 | 4327 days | 2% |
| Alexis Redor | 9/10 | 4331 days | 2% |
| Lars Borgaa | 4/10 | 4340 days | 0% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4634 days | 29% |
| Glenn Surzur | 4/10 | 4661 days | 29% |
| Michael Walker | 10/10 | 4667 days | 46% |
| Lorraine Walker | 9/10 | 4667 days | 45% |
| Michael Nolan | 10/10 | 4693 days | 46% |
| Jim Woodruff | 10/10 | 4693 days | 46% |
| Lis Bon | 10/10 | 4724 days | 46% |
| Liam Day | 10/10 | 4741 days | 46% |
| Auger | 9/10 | 4762 days | 45% |
| Auger | 9/10 | 4762 days | 45% |
| C Schaap | 8/10 | 4766 days | 45% |
| Marjo Cousijn | 9/10 | 4772 days | 45% |
| gareth williams | 5/10 | 4816 days | 34% |
| Dagette | 8/10 | 4816 days | 45% |
| Wright | 10/10 | 5034 days | 46% |
| Emma Bagguley | 4/10 | 5037 days | 29% |
| Hazel & Alan Damerell | 10/10 | 5041 days | 46% |
| Michael & Rosemary Smith | 9/10 | 5045 days | 45% |
| Koster | 10/10 | 5045 days | 46% |
| John A Jerome | 6/10 | 5045 days | 39% |
| Katrawa | 5/10 | 5052 days | 34% |
| Jensen Bresbenbeek | 7/10 | 5122 days | 42% |
| Rebecca & Hugh Small | 5/10 | 5131 days | 34% |
| Steve | 3/10 | 5135 days | 24% |
| topsy08 | 7/10 | 5365 days | 42% |
| Gunter | 9/10 | 5379 days | 45% |
| Tim Laurent | 5/10 | 5387 days | 34% |
| Keith Ogley | 6/10 | 5390 days | 39% |
| Lynda Hutchins | 10/10 | 5390 days | 46% |
| Louise van der Hyden | 4/10 | 5394 days | 29% |
| Katie Mitchell | 9/10 | 5396 days | 45% |
| Gerhard | 8/10 | 5397 days | 45% |
| Kasten | 8/10 | 5398 days | 45% |
| C P Lawrence | 4/10 | 5400 days | 29% |
| Bucher Weruer | 9/10 | 5400 days | 45% |
| Naomi Kosteaman | 9/10 | 5400 days | 45% |
| Rian Bach | 5/10 | 5402 days | 34% |
| Josef & Christine Evers | 8/10 | 5405 days | 45% |
| Frank Schedler | 5/10 | 5407 days | 34% |
| Gerd Pagel | 7/10 | 5409 days | 42% |
| Charlie | 9/10 | 5410 days | 45% |
| Dana Pagliarini | 5/10 | 5412 days | 34% |
| Andy Martin | 8/10 | 5413 days | 45% |
| Julia | 5/10 | 5416 days | 34% |
| Doris Neuber | 7/10 | 5423 days | 42% |
| Teknik151 | 4/10 | 5424 days | 29% |
| Warris2500 | 4/10 | 5608 days | 29% |
| Versteeg | 7/10 | 5682 days | 42% |
| Victoria Slater | 6/10 | 5735 days | 39% |
| Bowness | 10/10 | 5748 days | 46% |
| David B | 9/10 | 5756 days | 45% |
| Sievers | 9/10 | 5764 days | 45% |
| Don & Alice | 9/10 | 5765 days | 45% |
| Amanda Iavarone | 10/10 | 5767 days | 46% |
| Sheila Morgan | 10/10 | 5770 days | 46% |
| Wilbert Germ | 9/10 | 5774 days | 45% |
| Ronny | 6/10 | 5775 days | 39% |
| Annette Schmitt | 4/10 | 5783 days | 29% |
| Annie | 7/10 | 5783 days | 42% |
| Nadine Schaee | 6/10 | 5786 days | 39% |
| Terry Phillips | 8/10 | 5786 days | 45% |
| Chance McGuire | 10/10 | 5789 days | 46% |
| Richard Pearson | 6/10 | 5799 days | 39% |
| cees juffermans | 3/10 | 5802 days | 24% |
| wenerz | 1/10 | 5836 days | 17% |
| Werner Zuis | 1/10 | 5836 days | 17% |
| alasiac | 10/10 | 5851 days | 46% |
| Mark Jenkins | 5/10 | 5859 days | 34% |
| Silvana Thom | 10/10 | 5861 days | 46% |
| Alexis De Wilde | 7/10 | 5861 days | 42% |
| Cyriel Schacken | 7/10 | 5861 days | 42% |
| Simon Bartholomew | 10/10 | 5863 days | 46% |
| Marcel Schleinkcfer | 10/10 | 5863 days | 46% |
| Thorben Thede | 9/10 | 5863 days | 45% |
| Roma | 9/10 | 5874 days | 45% |
| brianp | 8/10 | 5967 days | 45% |
| Rose and Jess Damon and Esler | 6/10 | 6004 days | 39% |
| OliverG1 | 9/10 | 6083 days | 45% |
| Anji Sprinks | 8/10 | 6092 days | 45% |
| Ger | 6/10 | 6093 days | 39% |
| JanW | 8/10 | 6107 days | 45% |
| Ian | 8/10 | 6119 days | 45% |
| Tatjane | 2/10 | 6126 days | 19% |
| ChristineM | 10/10 | 6128 days | 46% |
| SebastianGermany1 | 9/10 | 6130 days | 45% |
| Paul | 9/10 | 6138 days | 45% |
| SiegfriedL | 10/10 | 6150 days | 46% |
| purplekat99 | 9/10 | 6185 days | 45% |
| Klaus | 7/10 | 6486 days | 42% |
| Volders | 10/10 | 6488 days | 46% |
| Dot & Gordon Quaid | 9/10 | 6502 days | 45% |
| Roger & Margaret | 8/10 | 6509 days | 45% |
| John Howlett | 7/10 | 6511 days | 42% |
| Dupre | 7/10 | 6564 days | 42% |
| Paul Cowie | 9/10 | 6570 days | 45% |
| Floren | 9/10 | 6584 days | 45% |
| Killerblow | 10/10 | 6593 days | 46% |
| Lisbeth Johansson | 8/10 | 6697 days | 45% |
| TeamFlorida | 10/10 | 6832 days | 46% |
| John Beirne | 10/10 | 6849 days | 46% |
| Pete | 9/10 | 6849 days | 45% |
| Anne | 8/10 | 6849 days | 45% |
| Anna | 9/10 | 6854 days | 45% |
| Mitch | 8/10 | 6860 days | 45% |
| Ian | 9/10 | 6877 days | 45% |
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
-4.07% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 42 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 | -4.01% |
| 198 | -4.03% |
| 199 | -4.05% |
| 200 | -4.07% |
| 201 | -4.09% |
| 202 | -4.11% |
| 203 | -4.13% |
| … | … |
Balancing Adjustment
4.31% 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.