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
79.40%
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 | 3559 days | 99% |
| J P Schurer | 7/10 | 3559 days | 99% |
| Dries | 9/10 | 3599 days | 100% |
| Jasmine Rogers | 10/10 | 3612 days | 99% |
| Sophie | 10/10 | 3619 days | 98% |
| Nicholas Strozza | 8/10 | 3652 days | 92% |
| Jill Stebbing | 9/10 | 3875 days | 63% |
| Lothen | 8/10 | 3896 days | 60% |
| Lea Watterson | 9/10 | 3918 days | 57% |
| James Esele | 7/10 | 3972 days | 47% |
| Philipp | 2/10 | 3980 days | 20% |
| Coralie Ambrosino | 8/10 | 4238 days | 15% |
| Christoph | 10/10 | 4241 days | 15% |
| Fanny DeBon | 8/10 | 4339 days | 1% |
| Hubert | 10/10 | 4349 days | 0% |
| Sagi | 2/10 | 4620 days | 27% |
| Henrik Suefke | 10/10 | 4638 days | 65% |
| Kiernan Matthew | 7/10 | 4643 days | 60% |
| Alexis Redor | 9/10 | 4647 days | 64% |
| Lars Borgaa | 4/10 | 4656 days | 41% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4950 days | 41% |
| Glenn Surzur | 4/10 | 4977 days | 41% |
| Michael Walker | 10/10 | 4983 days | 65% |
| Lorraine Walker | 9/10 | 4983 days | 64% |
| Michael Nolan | 10/10 | 5009 days | 65% |
| Jim Woodruff | 10/10 | 5009 days | 65% |
| Lis Bon | 10/10 | 5040 days | 65% |
| Liam Day | 10/10 | 5057 days | 65% |
| Auger | 9/10 | 5078 days | 64% |
| Auger | 9/10 | 5078 days | 64% |
| C Schaap | 8/10 | 5082 days | 63% |
| Marjo Cousijn | 9/10 | 5088 days | 64% |
| gareth williams | 5/10 | 5132 days | 48% |
| Dagette | 8/10 | 5132 days | 63% |
| Wright | 10/10 | 5350 days | 65% |
| Emma Bagguley | 4/10 | 5353 days | 41% |
| Hazel & Alan Damerell | 10/10 | 5357 days | 65% |
| Michael & Rosemary Smith | 9/10 | 5361 days | 64% |
| Koster | 10/10 | 5361 days | 65% |
| John A Jerome | 6/10 | 5361 days | 55% |
| Katrawa | 5/10 | 5368 days | 48% |
| Jensen Bresbenbeek | 7/10 | 5438 days | 60% |
| Rebecca & Hugh Small | 5/10 | 5447 days | 48% |
| Steve | 3/10 | 5451 days | 33% |
| topsy08 | 7/10 | 5681 days | 60% |
| Gunter | 9/10 | 5695 days | 64% |
| Tim Laurent | 5/10 | 5703 days | 48% |
| Keith Ogley | 6/10 | 5706 days | 55% |
| Lynda Hutchins | 10/10 | 5706 days | 65% |
| Louise van der Hyden | 4/10 | 5710 days | 41% |
| Katie Mitchell | 9/10 | 5712 days | 64% |
| Gerhard | 8/10 | 5713 days | 63% |
| Kasten | 8/10 | 5714 days | 63% |
| C P Lawrence | 4/10 | 5716 days | 41% |
| Bucher Weruer | 9/10 | 5716 days | 64% |
| Naomi Kosteaman | 9/10 | 5716 days | 64% |
| Rian Bach | 5/10 | 5718 days | 48% |
| Josef & Christine Evers | 8/10 | 5721 days | 63% |
| Frank Schedler | 5/10 | 5723 days | 48% |
| Gerd Pagel | 7/10 | 5725 days | 60% |
| Charlie | 9/10 | 5726 days | 64% |
| Dana Pagliarini | 5/10 | 5728 days | 48% |
| Andy Martin | 8/10 | 5729 days | 63% |
| Julia | 5/10 | 5732 days | 48% |
| Doris Neuber | 7/10 | 5739 days | 60% |
| Teknik151 | 4/10 | 5740 days | 41% |
| Warris2500 | 4/10 | 5924 days | 41% |
| Versteeg | 7/10 | 5998 days | 60% |
| Victoria Slater | 6/10 | 6051 days | 55% |
| Bowness | 10/10 | 6064 days | 65% |
| David B | 9/10 | 6072 days | 64% |
| Sievers | 9/10 | 6080 days | 64% |
| Don & Alice | 9/10 | 6081 days | 64% |
| Amanda Iavarone | 10/10 | 6083 days | 65% |
| Sheila Morgan | 10/10 | 6086 days | 65% |
| Wilbert Germ | 9/10 | 6090 days | 64% |
| Ronny | 6/10 | 6091 days | 55% |
| Annette Schmitt | 4/10 | 6099 days | 41% |
| Annie | 7/10 | 6099 days | 60% |
| Nadine Schaee | 6/10 | 6102 days | 55% |
| Terry Phillips | 8/10 | 6102 days | 63% |
| Chance McGuire | 10/10 | 6105 days | 65% |
| Richard Pearson | 6/10 | 6115 days | 55% |
| cees juffermans | 3/10 | 6118 days | 33% |
| wenerz | 1/10 | 6152 days | 24% |
| Werner Zuis | 1/10 | 6152 days | 24% |
| alasiac | 10/10 | 6167 days | 65% |
| Mark Jenkins | 5/10 | 6175 days | 48% |
| Silvana Thom | 10/10 | 6177 days | 65% |
| Alexis De Wilde | 7/10 | 6177 days | 60% |
| Cyriel Schacken | 7/10 | 6177 days | 60% |
| Simon Bartholomew | 10/10 | 6179 days | 65% |
| Marcel Schleinkcfer | 10/10 | 6179 days | 65% |
| Thorben Thede | 9/10 | 6179 days | 64% |
| Roma | 9/10 | 6190 days | 64% |
| brianp | 8/10 | 6283 days | 63% |
| Rose and Jess Damon and Esler | 6/10 | 6320 days | 55% |
| OliverG1 | 9/10 | 6399 days | 64% |
| Anji Sprinks | 8/10 | 6408 days | 63% |
| Ger | 6/10 | 6409 days | 55% |
| JanW | 8/10 | 6423 days | 63% |
| Ian | 8/10 | 6434 days | 63% |
| Tatjane | 2/10 | 6442 days | 27% |
| ChristineM | 10/10 | 6444 days | 65% |
| SebastianGermany1 | 9/10 | 6446 days | 64% |
| Paul | 9/10 | 6454 days | 64% |
| SiegfriedL | 10/10 | 6466 days | 65% |
| purplekat99 | 9/10 | 6501 days | 64% |
| Klaus | 7/10 | 6802 days | 60% |
| Volders | 10/10 | 6804 days | 65% |
| Dot & Gordon Quaid | 9/10 | 6818 days | 64% |
| Roger & Margaret | 8/10 | 6825 days | 63% |
| John Howlett | 7/10 | 6827 days | 60% |
| Dupre | 7/10 | 6880 days | 60% |
| Paul Cowie | 9/10 | 6886 days | 64% |
| Floren | 9/10 | 6900 days | 64% |
| Killerblow | 10/10 | 6908 days | 65% |
| Lisbeth Johansson | 8/10 | 7013 days | 63% |
| TeamFlorida | 10/10 | 7148 days | 65% |
| John Beirne | 10/10 | 7165 days | 65% |
| Pete | 9/10 | 7165 days | 64% |
| Anne | 8/10 | 7165 days | 63% |
| Anna | 9/10 | 7170 days | 64% |
| Mitch | 8/10 | 7176 days | 63% |
| Ian | 9/10 | 7193 days | 64% |
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
-3.66% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 57 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 | -3.60% |
| 198 | -3.62% |
| 199 | -3.64% |
| 200 | -3.66% |
| 201 | -3.68% |
| 202 | -3.70% |
| 203 | -3.71% |
| … | … |
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.