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
79.88%
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 | 3316 days | 98% |
| J P Schurer | 7/10 | 3316 days | 98% |
| Dries | 9/10 | 3356 days | 100% |
| Jasmine Rogers | 10/10 | 3369 days | 100% |
| Sophie | 10/10 | 3376 days | 99% |
| Nicholas Strozza | 8/10 | 3409 days | 94% |
| Jill Stebbing | 9/10 | 3632 days | 73% |
| Lothen | 8/10 | 3653 days | 70% |
| Lea Watterson | 9/10 | 3675 days | 69% |
| James Esele | 7/10 | 3729 days | 60% |
| Philipp | 2/10 | 3737 days | 29% |
| Coralie Ambrosino | 8/10 | 3995 days | 37% |
| Christoph | 10/10 | 3998 days | 38% |
| Fanny DeBon | 8/10 | 4096 days | 27% |
| Hubert | 10/10 | 4106 days | 27% |
| Sagi | 2/10 | 4377 days | 0% |
| Henrik Suefke | 10/10 | 4395 days | 50% |
| Kiernan Matthew | 7/10 | 4400 days | 47% |
| Alexis Redor | 9/10 | 4404 days | 50% |
| Lars Borgaa | 4/10 | 4413 days | 33% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4707 days | 33% |
| Glenn Surzur | 4/10 | 4734 days | 33% |
| Michael Walker | 10/10 | 4740 days | 50% |
| Lorraine Walker | 9/10 | 4740 days | 50% |
| Michael Nolan | 10/10 | 4766 days | 50% |
| Jim Woodruff | 10/10 | 4766 days | 50% |
| Lis Bon | 10/10 | 4797 days | 50% |
| Liam Day | 10/10 | 4814 days | 50% |
| Auger | 9/10 | 4835 days | 50% |
| Auger | 9/10 | 4835 days | 50% |
| C Schaap | 8/10 | 4839 days | 49% |
| Marjo Cousijn | 9/10 | 4845 days | 50% |
| gareth williams | 5/10 | 4889 days | 38% |
| Dagette | 8/10 | 4889 days | 49% |
| Wright | 10/10 | 5107 days | 50% |
| Emma Bagguley | 4/10 | 5110 days | 33% |
| Hazel & Alan Damerell | 10/10 | 5114 days | 50% |
| Michael & Rosemary Smith | 9/10 | 5118 days | 50% |
| Koster | 10/10 | 5118 days | 50% |
| John A Jerome | 6/10 | 5118 days | 43% |
| Katrawa | 5/10 | 5125 days | 38% |
| Jensen Bresbenbeek | 7/10 | 5195 days | 47% |
| Rebecca & Hugh Small | 5/10 | 5204 days | 38% |
| Steve | 3/10 | 5208 days | 27% |
| topsy08 | 7/10 | 5438 days | 47% |
| Gunter | 9/10 | 5452 days | 50% |
| Tim Laurent | 5/10 | 5460 days | 38% |
| Keith Ogley | 6/10 | 5463 days | 43% |
| Lynda Hutchins | 10/10 | 5463 days | 50% |
| Louise van der Hyden | 4/10 | 5467 days | 33% |
| Katie Mitchell | 9/10 | 5469 days | 50% |
| Gerhard | 8/10 | 5470 days | 49% |
| Kasten | 8/10 | 5471 days | 49% |
| C P Lawrence | 4/10 | 5473 days | 33% |
| Bucher Weruer | 9/10 | 5473 days | 50% |
| Naomi Kosteaman | 9/10 | 5473 days | 50% |
| Rian Bach | 5/10 | 5475 days | 38% |
| Josef & Christine Evers | 8/10 | 5478 days | 49% |
| Frank Schedler | 5/10 | 5480 days | 38% |
| Gerd Pagel | 7/10 | 5482 days | 47% |
| Charlie | 9/10 | 5483 days | 50% |
| Dana Pagliarini | 5/10 | 5485 days | 38% |
| Andy Martin | 8/10 | 5486 days | 49% |
| Julia | 5/10 | 5489 days | 38% |
| Doris Neuber | 7/10 | 5496 days | 47% |
| Teknik151 | 4/10 | 5497 days | 33% |
| Warris2500 | 4/10 | 5681 days | 33% |
| Versteeg | 7/10 | 5755 days | 47% |
| Victoria Slater | 6/10 | 5808 days | 43% |
| Bowness | 10/10 | 5821 days | 50% |
| David B | 9/10 | 5829 days | 50% |
| Sievers | 9/10 | 5837 days | 50% |
| Don & Alice | 9/10 | 5838 days | 50% |
| Amanda Iavarone | 10/10 | 5840 days | 50% |
| Sheila Morgan | 10/10 | 5843 days | 50% |
| Wilbert Germ | 9/10 | 5847 days | 50% |
| Ronny | 6/10 | 5848 days | 43% |
| Annette Schmitt | 4/10 | 5856 days | 33% |
| Annie | 7/10 | 5856 days | 47% |
| Nadine Schaee | 6/10 | 5859 days | 43% |
| Terry Phillips | 8/10 | 5859 days | 49% |
| Chance McGuire | 10/10 | 5862 days | 50% |
| Richard Pearson | 6/10 | 5872 days | 43% |
| cees juffermans | 3/10 | 5875 days | 27% |
| wenerz | 1/10 | 5909 days | 20% |
| Werner Zuis | 1/10 | 5909 days | 20% |
| alasiac | 10/10 | 5924 days | 50% |
| Mark Jenkins | 5/10 | 5932 days | 38% |
| Silvana Thom | 10/10 | 5934 days | 50% |
| Alexis De Wilde | 7/10 | 5934 days | 47% |
| Cyriel Schacken | 7/10 | 5934 days | 47% |
| Simon Bartholomew | 10/10 | 5936 days | 50% |
| Marcel Schleinkcfer | 10/10 | 5936 days | 50% |
| Thorben Thede | 9/10 | 5936 days | 50% |
| Roma | 9/10 | 5947 days | 50% |
| brianp | 8/10 | 6040 days | 49% |
| Rose and Jess Damon and Esler | 6/10 | 6077 days | 43% |
| OliverG1 | 9/10 | 6156 days | 50% |
| Anji Sprinks | 8/10 | 6165 days | 49% |
| Ger | 6/10 | 6166 days | 43% |
| JanW | 8/10 | 6180 days | 49% |
| Ian | 8/10 | 6191 days | 49% |
| Tatjane | 2/10 | 6199 days | 23% |
| ChristineM | 10/10 | 6201 days | 50% |
| SebastianGermany1 | 9/10 | 6203 days | 50% |
| Paul | 9/10 | 6211 days | 50% |
| SiegfriedL | 10/10 | 6223 days | 50% |
| purplekat99 | 9/10 | 6258 days | 50% |
| Klaus | 7/10 | 6559 days | 47% |
| Volders | 10/10 | 6561 days | 50% |
| Dot & Gordon Quaid | 9/10 | 6575 days | 50% |
| Roger & Margaret | 8/10 | 6582 days | 49% |
| John Howlett | 7/10 | 6584 days | 47% |
| Dupre | 7/10 | 6637 days | 47% |
| Paul Cowie | 9/10 | 6643 days | 50% |
| Floren | 9/10 | 6657 days | 50% |
| Killerblow | 10/10 | 6665 days | 50% |
| Lisbeth Johansson | 8/10 | 6770 days | 49% |
| TeamFlorida | 10/10 | 6905 days | 50% |
| John Beirne | 10/10 | 6922 days | 50% |
| Pete | 9/10 | 6922 days | 50% |
| Anne | 8/10 | 6922 days | 49% |
| Anna | 9/10 | 6927 days | 50% |
| Mitch | 8/10 | 6933 days | 49% |
| Ian | 9/10 | 6950 days | 50% |
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
-4.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 53 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 | -4.08% |
| 198 | -4.10% |
| 199 | -4.13% |
| 200 | -4.15% |
| 201 | -4.17% |
| 202 | -4.19% |
| 203 | -4.21% |
| … | … |
Balancing Adjustment
4.37% 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.