Kia ora, 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.
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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
80.04%
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 | 2997 days | 96% |
| J P Schurer | 7/10 | 2997 days | 96% |
| Dries | 9/10 | 3037 days | 100% |
| Jasmine Rogers | 10/10 | 3050 days | 100% |
| Sophie | 10/10 | 3057 days | 99% |
| Nicholas Strozza | 8/10 | 3090 days | 94% |
| Jill Stebbing | 9/10 | 3313 days | 77% |
| Lothen | 8/10 | 3334 days | 74% |
| Lea Watterson | 9/10 | 3356 days | 73% |
| James Esele | 7/10 | 3410 days | 64% |
| Philipp | 2/10 | 3418 days | 25% |
| Coralie Ambrosino | 8/10 | 3676 days | 46% |
| Christoph | 10/10 | 3679 days | 47% |
| Fanny DeBon | 8/10 | 3777 days | 38% |
| Hubert | 10/10 | 3787 days | 38% |
| Sagi | 2/10 | 4058 days | 0% |
| Henrik Suefke | 10/10 | 4076 days | 13% |
| Kiernan Matthew | 7/10 | 4081 days | 11% |
| Alexis Redor | 9/10 | 4085 days | 12% |
| Lars Borgaa | 4/10 | 4094 days | 3% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4388 days | 16% |
| Glenn Surzur | 4/10 | 4415 days | 16% |
| Michael Walker | 10/10 | 4421 days | 31% |
| Lorraine Walker | 9/10 | 4421 days | 30% |
| Michael Nolan | 10/10 | 4447 days | 31% |
| Jim Woodruff | 10/10 | 4447 days | 31% |
| Lis Bon | 10/10 | 4478 days | 31% |
| Liam Day | 10/10 | 4495 days | 31% |
| Auger | 9/10 | 4516 days | 30% |
| Auger | 9/10 | 4516 days | 30% |
| C Schaap | 8/10 | 4520 days | 30% |
| Marjo Cousijn | 9/10 | 4526 days | 30% |
| gareth williams | 5/10 | 4570 days | 21% |
| Dagette | 8/10 | 4570 days | 30% |
| Wright | 10/10 | 4788 days | 31% |
| Emma Bagguley | 4/10 | 4791 days | 16% |
| Hazel & Alan Damerell | 10/10 | 4795 days | 31% |
| Michael & Rosemary Smith | 9/10 | 4799 days | 30% |
| Koster | 10/10 | 4799 days | 31% |
| John A Jerome | 6/10 | 4799 days | 25% |
| Katrawa | 5/10 | 4806 days | 21% |
| Jensen Bresbenbeek | 7/10 | 4876 days | 28% |
| Rebecca & Hugh Small | 5/10 | 4885 days | 21% |
| Steve | 3/10 | 4889 days | 11% |
| topsy08 | 7/10 | 5119 days | 28% |
| Gunter | 9/10 | 5133 days | 30% |
| Tim Laurent | 5/10 | 5141 days | 21% |
| Keith Ogley | 6/10 | 5144 days | 25% |
| Lynda Hutchins | 10/10 | 5144 days | 31% |
| Louise van der Hyden | 4/10 | 5148 days | 16% |
| Katie Mitchell | 9/10 | 5150 days | 30% |
| Gerhard | 8/10 | 5151 days | 30% |
| Kasten | 8/10 | 5152 days | 30% |
| C P Lawrence | 4/10 | 5154 days | 16% |
| Bucher Weruer | 9/10 | 5154 days | 30% |
| Naomi Kosteaman | 9/10 | 5154 days | 30% |
| Rian Bach | 5/10 | 5156 days | 21% |
| Josef & Christine Evers | 8/10 | 5159 days | 30% |
| Frank Schedler | 5/10 | 5161 days | 21% |
| Gerd Pagel | 7/10 | 5163 days | 28% |
| Charlie | 9/10 | 5164 days | 30% |
| Dana Pagliarini | 5/10 | 5166 days | 21% |
| Andy Martin | 8/10 | 5167 days | 30% |
| Julia | 5/10 | 5170 days | 21% |
| Doris Neuber | 7/10 | 5177 days | 28% |
| Teknik151 | 4/10 | 5178 days | 16% |
| Warris2500 | 4/10 | 5362 days | 16% |
| Versteeg | 7/10 | 5436 days | 28% |
| Victoria Slater | 6/10 | 5489 days | 25% |
| Bowness | 10/10 | 5502 days | 31% |
| David B | 9/10 | 5510 days | 30% |
| Sievers | 9/10 | 5518 days | 30% |
| Don & Alice | 9/10 | 5519 days | 30% |
| Amanda Iavarone | 10/10 | 5521 days | 31% |
| Sheila Morgan | 10/10 | 5524 days | 31% |
| Wilbert Germ | 9/10 | 5528 days | 30% |
| Ronny | 6/10 | 5529 days | 25% |
| Annette Schmitt | 4/10 | 5537 days | 16% |
| Annie | 7/10 | 5537 days | 28% |
| Nadine Schaee | 6/10 | 5540 days | 25% |
| Terry Phillips | 8/10 | 5540 days | 30% |
| Chance McGuire | 10/10 | 5543 days | 31% |
| Richard Pearson | 6/10 | 5553 days | 25% |
| cees juffermans | 3/10 | 5556 days | 11% |
| wenerz | 1/10 | 5590 days | 5% |
| Werner Zuis | 1/10 | 5590 days | 5% |
| alasiac | 10/10 | 5605 days | 31% |
| Mark Jenkins | 5/10 | 5613 days | 21% |
| Silvana Thom | 10/10 | 5615 days | 31% |
| Alexis De Wilde | 7/10 | 5615 days | 28% |
| Cyriel Schacken | 7/10 | 5615 days | 28% |
| Simon Bartholomew | 10/10 | 5617 days | 31% |
| Marcel Schleinkcfer | 10/10 | 5617 days | 31% |
| Thorben Thede | 9/10 | 5617 days | 30% |
| Roma | 9/10 | 5628 days | 30% |
| brianp | 8/10 | 5721 days | 30% |
| Rose and Jess Damon and Esler | 6/10 | 5758 days | 25% |
| OliverG1 | 9/10 | 5837 days | 30% |
| Anji Sprinks | 8/10 | 5846 days | 30% |
| Ger | 6/10 | 5847 days | 25% |
| JanW | 8/10 | 5861 days | 30% |
| Ian | 8/10 | 5872 days | 30% |
| Tatjane | 2/10 | 5880 days | 7% |
| ChristineM | 10/10 | 5882 days | 31% |
| SebastianGermany1 | 9/10 | 5884 days | 30% |
| Paul | 9/10 | 5892 days | 30% |
| SiegfriedL | 10/10 | 5904 days | 31% |
| purplekat99 | 9/10 | 5939 days | 30% |
| Klaus | 7/10 | 6240 days | 28% |
| Volders | 10/10 | 6242 days | 31% |
| Dot & Gordon Quaid | 9/10 | 6256 days | 30% |
| Roger & Margaret | 8/10 | 6263 days | 30% |
| John Howlett | 7/10 | 6265 days | 28% |
| Dupre | 7/10 | 6318 days | 28% |
| Paul Cowie | 9/10 | 6324 days | 30% |
| Floren | 9/10 | 6338 days | 30% |
| Killerblow | 10/10 | 6346 days | 31% |
| Lisbeth Johansson | 8/10 | 6451 days | 30% |
| TeamFlorida | 10/10 | 6586 days | 31% |
| John Beirne | 10/10 | 6603 days | 31% |
| Pete | 9/10 | 6603 days | 30% |
| Anne | 8/10 | 6603 days | 30% |
| Anna | 9/10 | 6608 days | 30% |
| Mitch | 8/10 | 6614 days | 30% |
| Ian | 9/10 | 6631 days | 30% |
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
-3.64% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 61 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 | -3.59% |
| 198 | -3.61% |
| 199 | -3.63% |
| 200 | -3.64% |
| 201 | -3.66% |
| 202 | -3.68% |
| 203 | -3.70% |
| … | … |
Balancing Adjustment
4.13% 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.