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.
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
79.95%
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 | 3275 days | 98% |
| J P Schurer | 7/10 | 3275 days | 98% |
| Dries | 9/10 | 3315 days | 100% |
| Jasmine Rogers | 10/10 | 3328 days | 100% |
| Sophie | 10/10 | 3335 days | 99% |
| Nicholas Strozza | 8/10 | 3368 days | 94% |
| Jill Stebbing | 9/10 | 3591 days | 74% |
| Lothen | 8/10 | 3612 days | 71% |
| Lea Watterson | 9/10 | 3634 days | 70% |
| James Esele | 7/10 | 3688 days | 61% |
| Philipp | 2/10 | 3696 days | 29% |
| Coralie Ambrosino | 8/10 | 3954 days | 39% |
| Christoph | 10/10 | 3957 days | 40% |
| Fanny DeBon | 8/10 | 4055 days | 30% |
| Hubert | 10/10 | 4065 days | 30% |
| Sagi | 2/10 | 4336 days | 1% |
| Henrik Suefke | 10/10 | 4354 days | 2% |
| Kiernan Matthew | 7/10 | 4359 days | 1% |
| Alexis Redor | 9/10 | 4363 days | 1% |
| Lars Borgaa | 4/10 | 4372 days | 0% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4666 days | 31% |
| Glenn Surzur | 4/10 | 4693 days | 31% |
| Michael Walker | 10/10 | 4699 days | 48% |
| Lorraine Walker | 9/10 | 4699 days | 48% |
| Michael Nolan | 10/10 | 4725 days | 48% |
| Jim Woodruff | 10/10 | 4725 days | 48% |
| Lis Bon | 10/10 | 4756 days | 48% |
| Liam Day | 10/10 | 4773 days | 48% |
| Auger | 9/10 | 4794 days | 48% |
| Auger | 9/10 | 4794 days | 48% |
| C Schaap | 8/10 | 4798 days | 47% |
| Marjo Cousijn | 9/10 | 4804 days | 48% |
| gareth williams | 5/10 | 4848 days | 37% |
| Dagette | 8/10 | 4848 days | 47% |
| Wright | 10/10 | 5066 days | 48% |
| Emma Bagguley | 4/10 | 5069 days | 31% |
| Hazel & Alan Damerell | 10/10 | 5073 days | 48% |
| Michael & Rosemary Smith | 9/10 | 5077 days | 48% |
| Koster | 10/10 | 5077 days | 48% |
| John A Jerome | 6/10 | 5077 days | 41% |
| Katrawa | 5/10 | 5084 days | 37% |
| Jensen Bresbenbeek | 7/10 | 5154 days | 45% |
| Rebecca & Hugh Small | 5/10 | 5163 days | 37% |
| Steve | 3/10 | 5167 days | 26% |
| topsy08 | 7/10 | 5397 days | 45% |
| Gunter | 9/10 | 5411 days | 48% |
| Tim Laurent | 5/10 | 5419 days | 37% |
| Keith Ogley | 6/10 | 5422 days | 41% |
| Lynda Hutchins | 10/10 | 5422 days | 48% |
| Louise van der Hyden | 4/10 | 5426 days | 31% |
| Katie Mitchell | 9/10 | 5428 days | 48% |
| Gerhard | 8/10 | 5429 days | 47% |
| Kasten | 8/10 | 5430 days | 47% |
| C P Lawrence | 4/10 | 5432 days | 31% |
| Bucher Weruer | 9/10 | 5432 days | 48% |
| Naomi Kosteaman | 9/10 | 5432 days | 48% |
| Rian Bach | 5/10 | 5434 days | 37% |
| Josef & Christine Evers | 8/10 | 5437 days | 47% |
| Frank Schedler | 5/10 | 5439 days | 37% |
| Gerd Pagel | 7/10 | 5441 days | 45% |
| Charlie | 9/10 | 5442 days | 48% |
| Dana Pagliarini | 5/10 | 5444 days | 37% |
| Andy Martin | 8/10 | 5445 days | 47% |
| Julia | 5/10 | 5448 days | 37% |
| Doris Neuber | 7/10 | 5455 days | 45% |
| Teknik151 | 4/10 | 5456 days | 31% |
| Warris2500 | 4/10 | 5640 days | 31% |
| Versteeg | 7/10 | 5714 days | 45% |
| Victoria Slater | 6/10 | 5767 days | 41% |
| Bowness | 10/10 | 5780 days | 48% |
| David B | 9/10 | 5788 days | 48% |
| Sievers | 9/10 | 5796 days | 48% |
| Don & Alice | 9/10 | 5797 days | 48% |
| Amanda Iavarone | 10/10 | 5799 days | 48% |
| Sheila Morgan | 10/10 | 5802 days | 48% |
| Wilbert Germ | 9/10 | 5806 days | 48% |
| Ronny | 6/10 | 5807 days | 41% |
| Annette Schmitt | 4/10 | 5815 days | 31% |
| Annie | 7/10 | 5815 days | 45% |
| Nadine Schaee | 6/10 | 5818 days | 41% |
| Terry Phillips | 8/10 | 5818 days | 47% |
| Chance McGuire | 10/10 | 5821 days | 48% |
| Richard Pearson | 6/10 | 5831 days | 41% |
| cees juffermans | 3/10 | 5834 days | 26% |
| wenerz | 1/10 | 5868 days | 19% |
| Werner Zuis | 1/10 | 5868 days | 19% |
| alasiac | 10/10 | 5883 days | 48% |
| Mark Jenkins | 5/10 | 5891 days | 37% |
| Silvana Thom | 10/10 | 5893 days | 48% |
| Alexis De Wilde | 7/10 | 5893 days | 45% |
| Cyriel Schacken | 7/10 | 5893 days | 45% |
| Simon Bartholomew | 10/10 | 5895 days | 48% |
| Marcel Schleinkcfer | 10/10 | 5895 days | 48% |
| Thorben Thede | 9/10 | 5895 days | 48% |
| Roma | 9/10 | 5906 days | 48% |
| brianp | 8/10 | 5999 days | 47% |
| Rose and Jess Damon and Esler | 6/10 | 6036 days | 41% |
| OliverG1 | 9/10 | 6115 days | 48% |
| Anji Sprinks | 8/10 | 6124 days | 47% |
| Ger | 6/10 | 6125 days | 41% |
| JanW | 8/10 | 6139 days | 47% |
| Ian | 8/10 | 6151 days | 47% |
| Tatjane | 2/10 | 6158 days | 22% |
| ChristineM | 10/10 | 6160 days | 48% |
| SebastianGermany1 | 9/10 | 6162 days | 48% |
| Paul | 9/10 | 6170 days | 48% |
| SiegfriedL | 10/10 | 6182 days | 48% |
| purplekat99 | 9/10 | 6217 days | 48% |
| Klaus | 7/10 | 6518 days | 45% |
| Volders | 10/10 | 6520 days | 48% |
| Dot & Gordon Quaid | 9/10 | 6534 days | 48% |
| Roger & Margaret | 8/10 | 6541 days | 47% |
| John Howlett | 7/10 | 6543 days | 45% |
| Dupre | 7/10 | 6596 days | 45% |
| Paul Cowie | 9/10 | 6602 days | 48% |
| Floren | 9/10 | 6616 days | 48% |
| Killerblow | 10/10 | 6625 days | 48% |
| Lisbeth Johansson | 8/10 | 6729 days | 47% |
| TeamFlorida | 10/10 | 6864 days | 48% |
| John Beirne | 10/10 | 6881 days | 48% |
| Pete | 9/10 | 6881 days | 48% |
| Anne | 8/10 | 6881 days | 47% |
| Anna | 9/10 | 6886 days | 48% |
| Mitch | 8/10 | 6892 days | 47% |
| Ian | 9/10 | 6909 days | 48% |
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
-4.05% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 43 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 | -3.99% |
| 198 | -4.01% |
| 199 | -4.03% |
| 200 | -4.05% |
| 201 | -4.07% |
| 202 | -4.09% |
| 203 | -4.11% |
| … | … |
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.