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 | 3335 days | 97% |
| J P Schurer | 7/10 | 3335 days | 97% |
| Dries | 9/10 | 3375 days | 100% |
| Jasmine Rogers | 10/10 | 3388 days | 100% |
| Sophie | 10/10 | 3395 days | 99% |
| Nicholas Strozza | 8/10 | 3428 days | 92% |
| Jill Stebbing | 9/10 | 3651 days | 65% |
| Lothen | 8/10 | 3672 days | 62% |
| Lea Watterson | 9/10 | 3694 days | 60% |
| James Esele | 7/10 | 3748 days | 48% |
| Philipp | 2/10 | 3756 days | 10% |
| Coralie Ambrosino | 8/10 | 4014 days | 19% |
| Christoph | 10/10 | 4017 days | 20% |
| Fanny DeBon | 8/10 | 4115 days | 7% |
| Hubert | 10/10 | 4125 days | 6% |
| Sagi | 2/10 | 4396 days | 3% |
| Henrik Suefke | 10/10 | 4414 days | 39% |
| Kiernan Matthew | 7/10 | 4419 days | 34% |
| Alexis Redor | 9/10 | 4423 days | 38% |
| Lars Borgaa | 4/10 | 4432 days | 16% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4726 days | 16% |
| Glenn Surzur | 4/10 | 4753 days | 16% |
| Michael Walker | 10/10 | 4759 days | 39% |
| Lorraine Walker | 9/10 | 4759 days | 38% |
| Michael Nolan | 10/10 | 4785 days | 39% |
| Jim Woodruff | 10/10 | 4785 days | 39% |
| Lis Bon | 10/10 | 4816 days | 39% |
| Liam Day | 10/10 | 4833 days | 39% |
| Auger | 9/10 | 4854 days | 38% |
| Auger | 9/10 | 4854 days | 38% |
| C Schaap | 8/10 | 4858 days | 37% |
| Marjo Cousijn | 9/10 | 4864 days | 38% |
| gareth williams | 5/10 | 4908 days | 23% |
| Dagette | 8/10 | 4908 days | 37% |
| Wright | 10/10 | 5126 days | 39% |
| Emma Bagguley | 4/10 | 5129 days | 16% |
| Hazel & Alan Damerell | 10/10 | 5133 days | 39% |
| Michael & Rosemary Smith | 9/10 | 5137 days | 38% |
| Koster | 10/10 | 5137 days | 39% |
| John A Jerome | 6/10 | 5137 days | 30% |
| Katrawa | 5/10 | 5144 days | 23% |
| Jensen Bresbenbeek | 7/10 | 5214 days | 34% |
| Rebecca & Hugh Small | 5/10 | 5223 days | 23% |
| Steve | 3/10 | 5227 days | 9% |
| topsy08 | 7/10 | 5457 days | 34% |
| Gunter | 9/10 | 5471 days | 38% |
| Tim Laurent | 5/10 | 5479 days | 23% |
| Keith Ogley | 6/10 | 5482 days | 30% |
| Lynda Hutchins | 10/10 | 5482 days | 39% |
| Louise van der Hyden | 4/10 | 5486 days | 16% |
| Katie Mitchell | 9/10 | 5488 days | 38% |
| Gerhard | 8/10 | 5489 days | 37% |
| Kasten | 8/10 | 5490 days | 37% |
| C P Lawrence | 4/10 | 5492 days | 16% |
| Bucher Weruer | 9/10 | 5492 days | 38% |
| Naomi Kosteaman | 9/10 | 5492 days | 38% |
| Rian Bach | 5/10 | 5494 days | 23% |
| Josef & Christine Evers | 8/10 | 5497 days | 37% |
| Frank Schedler | 5/10 | 5499 days | 23% |
| Gerd Pagel | 7/10 | 5501 days | 34% |
| Charlie | 9/10 | 5502 days | 38% |
| Dana Pagliarini | 5/10 | 5504 days | 23% |
| Andy Martin | 8/10 | 5505 days | 37% |
| Julia | 5/10 | 5508 days | 23% |
| Doris Neuber | 7/10 | 5515 days | 34% |
| Teknik151 | 4/10 | 5516 days | 16% |
| Warris2500 | 4/10 | 5700 days | 16% |
| Versteeg | 7/10 | 5774 days | 34% |
| Victoria Slater | 6/10 | 5827 days | 30% |
| Bowness | 10/10 | 5840 days | 39% |
| David B | 9/10 | 5848 days | 38% |
| Sievers | 9/10 | 5856 days | 38% |
| Don & Alice | 9/10 | 5857 days | 38% |
| Amanda Iavarone | 10/10 | 5859 days | 39% |
| Sheila Morgan | 10/10 | 5862 days | 39% |
| Wilbert Germ | 9/10 | 5866 days | 38% |
| Ronny | 6/10 | 5867 days | 30% |
| Annette Schmitt | 4/10 | 5875 days | 16% |
| Annie | 7/10 | 5875 days | 34% |
| Nadine Schaee | 6/10 | 5878 days | 30% |
| Terry Phillips | 8/10 | 5878 days | 37% |
| Chance McGuire | 10/10 | 5881 days | 39% |
| Richard Pearson | 6/10 | 5891 days | 30% |
| cees juffermans | 3/10 | 5894 days | 9% |
| wenerz | 1/10 | 5928 days | 0% |
| Werner Zuis | 1/10 | 5928 days | 0% |
| alasiac | 10/10 | 5943 days | 39% |
| Mark Jenkins | 5/10 | 5951 days | 23% |
| Silvana Thom | 10/10 | 5953 days | 39% |
| Alexis De Wilde | 7/10 | 5953 days | 34% |
| Cyriel Schacken | 7/10 | 5953 days | 34% |
| Simon Bartholomew | 10/10 | 5955 days | 39% |
| Marcel Schleinkcfer | 10/10 | 5955 days | 39% |
| Thorben Thede | 9/10 | 5955 days | 38% |
| Roma | 9/10 | 5966 days | 38% |
| brianp | 8/10 | 6059 days | 37% |
| Rose and Jess Damon and Esler | 6/10 | 6096 days | 30% |
| OliverG1 | 9/10 | 6175 days | 38% |
| Anji Sprinks | 8/10 | 6184 days | 37% |
| Ger | 6/10 | 6185 days | 30% |
| JanW | 8/10 | 6199 days | 37% |
| Ian | 8/10 | 6211 days | 37% |
| Tatjane | 2/10 | 6219 days | 3% |
| ChristineM | 10/10 | 6220 days | 39% |
| SebastianGermany1 | 9/10 | 6222 days | 38% |
| Paul | 9/10 | 6231 days | 38% |
| SiegfriedL | 10/10 | 6242 days | 39% |
| purplekat99 | 9/10 | 6277 days | 38% |
| Klaus | 7/10 | 6578 days | 34% |
| Volders | 10/10 | 6580 days | 39% |
| Dot & Gordon Quaid | 9/10 | 6594 days | 38% |
| Roger & Margaret | 8/10 | 6601 days | 37% |
| John Howlett | 7/10 | 6603 days | 34% |
| Dupre | 7/10 | 6656 days | 34% |
| Paul Cowie | 9/10 | 6662 days | 38% |
| Floren | 9/10 | 6676 days | 38% |
| Killerblow | 10/10 | 6685 days | 39% |
| Lisbeth Johansson | 8/10 | 6789 days | 37% |
| TeamFlorida | 10/10 | 6924 days | 39% |
| John Beirne | 10/10 | 6941 days | 39% |
| Pete | 9/10 | 6941 days | 38% |
| Anne | 8/10 | 6941 days | 37% |
| Anna | 9/10 | 6946 days | 38% |
| Mitch | 8/10 | 6952 days | 37% |
| Ian | 9/10 | 6969 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
-4.04% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 56 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 | -3.98% |
| 198 | -4.00% |
| 199 | -4.02% |
| 200 | -4.04% |
| 201 | -4.06% |
| 202 | -4.08% |
| 203 | -4.10% |
| … | … |
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.