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
79.38%
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 | 3578 days | 99% |
| J P Schurer | 7/10 | 3578 days | 99% |
| Dries | 9/10 | 3618 days | 100% |
| Jasmine Rogers | 10/10 | 3631 days | 99% |
| Sophie | 10/10 | 3638 days | 98% |
| Nicholas Strozza | 8/10 | 3671 days | 92% |
| Jill Stebbing | 9/10 | 3894 days | 63% |
| Lothen | 8/10 | 3915 days | 60% |
| Lea Watterson | 9/10 | 3937 days | 57% |
| James Esele | 7/10 | 3991 days | 47% |
| Philipp | 2/10 | 3999 days | 22% |
| Coralie Ambrosino | 8/10 | 4257 days | 15% |
| Christoph | 10/10 | 4260 days | 15% |
| Fanny DeBon | 8/10 | 4358 days | 1% |
| Hubert | 10/10 | 4368 days | 0% |
| Sagi | 2/10 | 4639 days | 30% |
| Henrik Suefke | 10/10 | 4657 days | 67% |
| Kiernan Matthew | 7/10 | 4662 days | 62% |
| Alexis Redor | 9/10 | 4666 days | 67% |
| Lars Borgaa | 4/10 | 4675 days | 43% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4969 days | 43% |
| Glenn Surzur | 4/10 | 4996 days | 43% |
| Michael Walker | 10/10 | 5002 days | 67% |
| Lorraine Walker | 9/10 | 5002 days | 67% |
| Michael Nolan | 10/10 | 5028 days | 67% |
| Jim Woodruff | 10/10 | 5028 days | 67% |
| Lis Bon | 10/10 | 5059 days | 67% |
| Liam Day | 10/10 | 5076 days | 67% |
| Auger | 9/10 | 5097 days | 67% |
| Auger | 9/10 | 5097 days | 67% |
| C Schaap | 8/10 | 5101 days | 66% |
| Marjo Cousijn | 9/10 | 5107 days | 67% |
| gareth williams | 5/10 | 5151 days | 51% |
| Dagette | 8/10 | 5151 days | 66% |
| Wright | 10/10 | 5369 days | 67% |
| Emma Bagguley | 4/10 | 5372 days | 43% |
| Hazel & Alan Damerell | 10/10 | 5376 days | 67% |
| Michael & Rosemary Smith | 9/10 | 5380 days | 67% |
| Koster | 10/10 | 5380 days | 67% |
| John A Jerome | 6/10 | 5380 days | 58% |
| Katrawa | 5/10 | 5387 days | 51% |
| Jensen Bresbenbeek | 7/10 | 5457 days | 62% |
| Rebecca & Hugh Small | 5/10 | 5466 days | 51% |
| Steve | 3/10 | 5470 days | 36% |
| topsy08 | 7/10 | 5700 days | 62% |
| Gunter | 9/10 | 5714 days | 67% |
| Tim Laurent | 5/10 | 5722 days | 51% |
| Keith Ogley | 6/10 | 5725 days | 58% |
| Lynda Hutchins | 10/10 | 5725 days | 67% |
| Louise van der Hyden | 4/10 | 5729 days | 43% |
| Katie Mitchell | 9/10 | 5731 days | 67% |
| Gerhard | 8/10 | 5732 days | 66% |
| Kasten | 8/10 | 5733 days | 66% |
| C P Lawrence | 4/10 | 5735 days | 43% |
| Bucher Weruer | 9/10 | 5735 days | 67% |
| Naomi Kosteaman | 9/10 | 5735 days | 67% |
| Rian Bach | 5/10 | 5737 days | 51% |
| Josef & Christine Evers | 8/10 | 5740 days | 66% |
| Frank Schedler | 5/10 | 5742 days | 51% |
| Gerd Pagel | 7/10 | 5744 days | 62% |
| Charlie | 9/10 | 5745 days | 67% |
| Dana Pagliarini | 5/10 | 5747 days | 51% |
| Andy Martin | 8/10 | 5748 days | 66% |
| Julia | 5/10 | 5751 days | 51% |
| Doris Neuber | 7/10 | 5758 days | 62% |
| Teknik151 | 4/10 | 5759 days | 43% |
| Warris2500 | 4/10 | 5943 days | 43% |
| Versteeg | 7/10 | 6017 days | 62% |
| Victoria Slater | 6/10 | 6070 days | 58% |
| Bowness | 10/10 | 6083 days | 67% |
| David B | 9/10 | 6091 days | 67% |
| Sievers | 9/10 | 6099 days | 67% |
| Don & Alice | 9/10 | 6100 days | 67% |
| Amanda Iavarone | 10/10 | 6102 days | 67% |
| Sheila Morgan | 10/10 | 6105 days | 67% |
| Wilbert Germ | 9/10 | 6109 days | 67% |
| Ronny | 6/10 | 6110 days | 58% |
| Annette Schmitt | 4/10 | 6118 days | 43% |
| Annie | 7/10 | 6118 days | 62% |
| Nadine Schaee | 6/10 | 6121 days | 58% |
| Terry Phillips | 8/10 | 6121 days | 66% |
| Chance McGuire | 10/10 | 6124 days | 67% |
| Richard Pearson | 6/10 | 6134 days | 58% |
| cees juffermans | 3/10 | 6137 days | 36% |
| wenerz | 1/10 | 6171 days | 26% |
| Werner Zuis | 1/10 | 6171 days | 26% |
| alasiac | 10/10 | 6186 days | 67% |
| Mark Jenkins | 5/10 | 6194 days | 51% |
| Silvana Thom | 10/10 | 6196 days | 67% |
| Alexis De Wilde | 7/10 | 6196 days | 62% |
| Cyriel Schacken | 7/10 | 6196 days | 62% |
| Simon Bartholomew | 10/10 | 6198 days | 67% |
| Marcel Schleinkcfer | 10/10 | 6198 days | 67% |
| Thorben Thede | 9/10 | 6198 days | 67% |
| Roma | 9/10 | 6209 days | 67% |
| brianp | 8/10 | 6302 days | 66% |
| Rose and Jess Damon and Esler | 6/10 | 6339 days | 58% |
| OliverG1 | 9/10 | 6418 days | 67% |
| Anji Sprinks | 8/10 | 6427 days | 66% |
| Ger | 6/10 | 6428 days | 58% |
| JanW | 8/10 | 6442 days | 66% |
| Ian | 8/10 | 6454 days | 66% |
| Tatjane | 2/10 | 6461 days | 30% |
| ChristineM | 10/10 | 6463 days | 67% |
| SebastianGermany1 | 9/10 | 6465 days | 67% |
| Paul | 9/10 | 6473 days | 67% |
| SiegfriedL | 10/10 | 6485 days | 67% |
| purplekat99 | 9/10 | 6520 days | 67% |
| Klaus | 7/10 | 6821 days | 62% |
| Volders | 10/10 | 6823 days | 67% |
| Dot & Gordon Quaid | 9/10 | 6837 days | 67% |
| Roger & Margaret | 8/10 | 6844 days | 66% |
| John Howlett | 7/10 | 6846 days | 62% |
| Dupre | 7/10 | 6899 days | 62% |
| Paul Cowie | 9/10 | 6905 days | 67% |
| Floren | 9/10 | 6919 days | 67% |
| Killerblow | 10/10 | 6928 days | 67% |
| Lisbeth Johansson | 8/10 | 7032 days | 66% |
| TeamFlorida | 10/10 | 7167 days | 67% |
| John Beirne | 10/10 | 7184 days | 67% |
| Pete | 9/10 | 7184 days | 67% |
| Anne | 8/10 | 7184 days | 66% |
| Anna | 9/10 | 7189 days | 67% |
| Mitch | 8/10 | 7195 days | 66% |
| Ian | 9/10 | 7212 days | 67% |
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
-3.94% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 47 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 | -3.88% |
| 198 | -3.90% |
| 199 | -3.92% |
| 200 | -3.94% |
| 201 | -3.96% |
| 202 | -3.98% |
| 203 | -4.00% |
| … | … |
Balancing Adjustment
4.48% 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.