Hey, 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
79.44%
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 | 3518 days | 98% |
| J P Schurer | 7/10 | 3518 days | 98% |
| Dries | 9/10 | 3558 days | 100% |
| Jasmine Rogers | 10/10 | 3571 days | 99% |
| Sophie | 10/10 | 3578 days | 98% |
| Nicholas Strozza | 8/10 | 3611 days | 92% |
| Jill Stebbing | 9/10 | 3834 days | 63% |
| Lothen | 8/10 | 3855 days | 60% |
| Lea Watterson | 9/10 | 3877 days | 57% |
| James Esele | 7/10 | 3931 days | 47% |
| Philipp | 2/10 | 3939 days | 17% |
| Coralie Ambrosino | 8/10 | 4197 days | 14% |
| Christoph | 10/10 | 4200 days | 15% |
| Fanny DeBon | 8/10 | 4298 days | 1% |
| Hubert | 10/10 | 4308 days | 0% |
| Sagi | 2/10 | 4579 days | 22% |
| Henrik Suefke | 10/10 | 4597 days | 59% |
| Kiernan Matthew | 7/10 | 4602 days | 54% |
| Alexis Redor | 9/10 | 4606 days | 58% |
| Lars Borgaa | 4/10 | 4615 days | 35% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4909 days | 35% |
| Glenn Surzur | 4/10 | 4936 days | 35% |
| Michael Walker | 10/10 | 4942 days | 59% |
| Lorraine Walker | 9/10 | 4942 days | 58% |
| Michael Nolan | 10/10 | 4968 days | 59% |
| Jim Woodruff | 10/10 | 4968 days | 59% |
| Lis Bon | 10/10 | 4999 days | 59% |
| Liam Day | 10/10 | 5016 days | 59% |
| Auger | 9/10 | 5037 days | 58% |
| Auger | 9/10 | 5037 days | 58% |
| C Schaap | 8/10 | 5041 days | 58% |
| Marjo Cousijn | 9/10 | 5047 days | 58% |
| gareth williams | 5/10 | 5091 days | 43% |
| Dagette | 8/10 | 5091 days | 58% |
| Wright | 10/10 | 5309 days | 59% |
| Emma Bagguley | 4/10 | 5312 days | 35% |
| Hazel & Alan Damerell | 10/10 | 5316 days | 59% |
| Michael & Rosemary Smith | 9/10 | 5320 days | 58% |
| Koster | 10/10 | 5320 days | 59% |
| John A Jerome | 6/10 | 5320 days | 50% |
| Katrawa | 5/10 | 5327 days | 43% |
| Jensen Bresbenbeek | 7/10 | 5397 days | 54% |
| Rebecca & Hugh Small | 5/10 | 5406 days | 43% |
| Steve | 3/10 | 5410 days | 28% |
| topsy08 | 7/10 | 5640 days | 54% |
| Gunter | 9/10 | 5654 days | 58% |
| Tim Laurent | 5/10 | 5662 days | 43% |
| Keith Ogley | 6/10 | 5665 days | 50% |
| Lynda Hutchins | 10/10 | 5665 days | 59% |
| Louise van der Hyden | 4/10 | 5669 days | 35% |
| Katie Mitchell | 9/10 | 5671 days | 58% |
| Gerhard | 8/10 | 5672 days | 58% |
| Kasten | 8/10 | 5673 days | 58% |
| C P Lawrence | 4/10 | 5675 days | 35% |
| Bucher Weruer | 9/10 | 5675 days | 58% |
| Naomi Kosteaman | 9/10 | 5675 days | 58% |
| Rian Bach | 5/10 | 5677 days | 43% |
| Josef & Christine Evers | 8/10 | 5680 days | 58% |
| Frank Schedler | 5/10 | 5682 days | 43% |
| Gerd Pagel | 7/10 | 5684 days | 54% |
| Charlie | 9/10 | 5685 days | 58% |
| Dana Pagliarini | 5/10 | 5687 days | 43% |
| Andy Martin | 8/10 | 5688 days | 58% |
| Julia | 5/10 | 5691 days | 43% |
| Doris Neuber | 7/10 | 5698 days | 54% |
| Teknik151 | 4/10 | 5699 days | 35% |
| Warris2500 | 4/10 | 5883 days | 35% |
| Versteeg | 7/10 | 5957 days | 54% |
| Victoria Slater | 6/10 | 6010 days | 50% |
| Bowness | 10/10 | 6023 days | 59% |
| David B | 9/10 | 6031 days | 58% |
| Sievers | 9/10 | 6039 days | 58% |
| Don & Alice | 9/10 | 6040 days | 58% |
| Amanda Iavarone | 10/10 | 6042 days | 59% |
| Sheila Morgan | 10/10 | 6045 days | 59% |
| Wilbert Germ | 9/10 | 6049 days | 58% |
| Ronny | 6/10 | 6050 days | 50% |
| Annette Schmitt | 4/10 | 6058 days | 35% |
| Annie | 7/10 | 6058 days | 54% |
| Nadine Schaee | 6/10 | 6061 days | 50% |
| Terry Phillips | 8/10 | 6061 days | 58% |
| Chance McGuire | 10/10 | 6064 days | 59% |
| Richard Pearson | 6/10 | 6074 days | 50% |
| cees juffermans | 3/10 | 6077 days | 28% |
| wenerz | 1/10 | 6111 days | 18% |
| Werner Zuis | 1/10 | 6111 days | 18% |
| alasiac | 10/10 | 6126 days | 59% |
| Mark Jenkins | 5/10 | 6134 days | 43% |
| Silvana Thom | 10/10 | 6136 days | 59% |
| Alexis De Wilde | 7/10 | 6136 days | 54% |
| Cyriel Schacken | 7/10 | 6136 days | 54% |
| Simon Bartholomew | 10/10 | 6138 days | 59% |
| Marcel Schleinkcfer | 10/10 | 6138 days | 59% |
| Thorben Thede | 9/10 | 6138 days | 58% |
| Roma | 9/10 | 6149 days | 58% |
| brianp | 8/10 | 6242 days | 58% |
| Rose and Jess Damon and Esler | 6/10 | 6279 days | 50% |
| OliverG1 | 9/10 | 6358 days | 58% |
| Anji Sprinks | 8/10 | 6367 days | 58% |
| Ger | 6/10 | 6368 days | 50% |
| JanW | 8/10 | 6382 days | 58% |
| Ian | 8/10 | 6394 days | 58% |
| Tatjane | 2/10 | 6401 days | 22% |
| ChristineM | 10/10 | 6403 days | 59% |
| SebastianGermany1 | 9/10 | 6405 days | 58% |
| Paul | 9/10 | 6413 days | 58% |
| SiegfriedL | 10/10 | 6425 days | 59% |
| purplekat99 | 9/10 | 6460 days | 58% |
| Klaus | 7/10 | 6761 days | 54% |
| Volders | 10/10 | 6763 days | 59% |
| Dot & Gordon Quaid | 9/10 | 6777 days | 58% |
| Roger & Margaret | 8/10 | 6784 days | 58% |
| John Howlett | 7/10 | 6786 days | 54% |
| Dupre | 7/10 | 6839 days | 54% |
| Paul Cowie | 9/10 | 6845 days | 58% |
| Floren | 9/10 | 6859 days | 58% |
| Killerblow | 10/10 | 6868 days | 59% |
| Lisbeth Johansson | 8/10 | 6972 days | 58% |
| TeamFlorida | 10/10 | 7107 days | 59% |
| John Beirne | 10/10 | 7124 days | 59% |
| Pete | 9/10 | 7124 days | 58% |
| Anne | 8/10 | 7124 days | 58% |
| Anna | 9/10 | 7129 days | 58% |
| Mitch | 8/10 | 7135 days | 58% |
| Ian | 9/10 | 7152 days | 58% |
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
-2.78% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 85 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 | -2.74% |
| 198 | -2.76% |
| 199 | -2.77% |
| 200 | -2.78% |
| 201 | -2.80% |
| 202 | -2.81% |
| 203 | -2.83% |
| … | … |
Balancing Adjustment
4.04% 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.