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
79.53%
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 | 3437 days | 98% |
| J P Schurer | 7/10 | 3437 days | 98% |
| Dries | 9/10 | 3477 days | 100% |
| Jasmine Rogers | 10/10 | 3490 days | 99% |
| Sophie | 10/10 | 3497 days | 99% |
| Nicholas Strozza | 8/10 | 3530 days | 92% |
| Jill Stebbing | 9/10 | 3753 days | 63% |
| Lothen | 8/10 | 3774 days | 60% |
| Lea Watterson | 9/10 | 3796 days | 57% |
| James Esele | 7/10 | 3850 days | 46% |
| Philipp | 2/10 | 3858 days | 11% |
| Coralie Ambrosino | 8/10 | 4116 days | 14% |
| Christoph | 10/10 | 4119 days | 15% |
| Fanny DeBon | 8/10 | 4217 days | 1% |
| Hubert | 10/10 | 4227 days | 0% |
| Sagi | 2/10 | 4498 days | 11% |
| Henrik Suefke | 10/10 | 4516 days | 48% |
| Kiernan Matthew | 7/10 | 4521 days | 44% |
| Alexis Redor | 9/10 | 4525 days | 48% |
| Lars Borgaa | 4/10 | 4534 days | 24% |
| Mette, Bo, Viktor & Olivia Seligmann | 4/10 | 4828 days | 24% |
| Glenn Surzur | 4/10 | 4855 days | 24% |
| Michael Walker | 10/10 | 4861 days | 48% |
| Lorraine Walker | 9/10 | 4861 days | 48% |
| Michael Nolan | 10/10 | 4887 days | 48% |
| Jim Woodruff | 10/10 | 4887 days | 48% |
| Lis Bon | 10/10 | 4918 days | 48% |
| Liam Day | 10/10 | 4935 days | 48% |
| Auger | 9/10 | 4956 days | 48% |
| Auger | 9/10 | 4956 days | 48% |
| C Schaap | 8/10 | 4960 days | 47% |
| Marjo Cousijn | 9/10 | 4966 days | 48% |
| gareth williams | 5/10 | 5010 days | 32% |
| Dagette | 8/10 | 5010 days | 47% |
| Wright | 10/10 | 5228 days | 48% |
| Emma Bagguley | 4/10 | 5231 days | 24% |
| Hazel & Alan Damerell | 10/10 | 5235 days | 48% |
| Michael & Rosemary Smith | 9/10 | 5239 days | 48% |
| Koster | 10/10 | 5239 days | 48% |
| John A Jerome | 6/10 | 5239 days | 39% |
| Katrawa | 5/10 | 5246 days | 32% |
| Jensen Bresbenbeek | 7/10 | 5316 days | 44% |
| Rebecca & Hugh Small | 5/10 | 5325 days | 32% |
| Steve | 3/10 | 5329 days | 17% |
| topsy08 | 7/10 | 5559 days | 44% |
| Gunter | 9/10 | 5573 days | 48% |
| Tim Laurent | 5/10 | 5581 days | 32% |
| Keith Ogley | 6/10 | 5584 days | 39% |
| Lynda Hutchins | 10/10 | 5584 days | 48% |
| Louise van der Hyden | 4/10 | 5588 days | 24% |
| Katie Mitchell | 9/10 | 5590 days | 48% |
| Gerhard | 8/10 | 5591 days | 47% |
| Kasten | 8/10 | 5592 days | 47% |
| C P Lawrence | 4/10 | 5594 days | 24% |
| Bucher Weruer | 9/10 | 5594 days | 48% |
| Naomi Kosteaman | 9/10 | 5594 days | 48% |
| Rian Bach | 5/10 | 5596 days | 32% |
| Josef & Christine Evers | 8/10 | 5599 days | 47% |
| Frank Schedler | 5/10 | 5601 days | 32% |
| Gerd Pagel | 7/10 | 5603 days | 44% |
| Charlie | 9/10 | 5604 days | 48% |
| Dana Pagliarini | 5/10 | 5606 days | 32% |
| Andy Martin | 8/10 | 5607 days | 47% |
| Julia | 5/10 | 5610 days | 32% |
| Doris Neuber | 7/10 | 5617 days | 44% |
| Teknik151 | 4/10 | 5618 days | 24% |
| Warris2500 | 4/10 | 5802 days | 24% |
| Versteeg | 7/10 | 5876 days | 44% |
| Victoria Slater | 6/10 | 5929 days | 39% |
| Bowness | 10/10 | 5942 days | 48% |
| David B | 9/10 | 5950 days | 48% |
| Sievers | 9/10 | 5958 days | 48% |
| Don & Alice | 9/10 | 5959 days | 48% |
| Amanda Iavarone | 10/10 | 5961 days | 48% |
| Sheila Morgan | 10/10 | 5964 days | 48% |
| Wilbert Germ | 9/10 | 5968 days | 48% |
| Ronny | 6/10 | 5969 days | 39% |
| Annette Schmitt | 4/10 | 5977 days | 24% |
| Annie | 7/10 | 5977 days | 44% |
| Nadine Schaee | 6/10 | 5980 days | 39% |
| Terry Phillips | 8/10 | 5980 days | 47% |
| Chance McGuire | 10/10 | 5983 days | 48% |
| Richard Pearson | 6/10 | 5993 days | 39% |
| cees juffermans | 3/10 | 5996 days | 17% |
| wenerz | 1/10 | 6030 days | 7% |
| Werner Zuis | 1/10 | 6030 days | 7% |
| alasiac | 10/10 | 6045 days | 48% |
| Mark Jenkins | 5/10 | 6053 days | 32% |
| Silvana Thom | 10/10 | 6055 days | 48% |
| Alexis De Wilde | 7/10 | 6055 days | 44% |
| Cyriel Schacken | 7/10 | 6055 days | 44% |
| Simon Bartholomew | 10/10 | 6057 days | 48% |
| Marcel Schleinkcfer | 10/10 | 6057 days | 48% |
| Thorben Thede | 9/10 | 6057 days | 48% |
| Roma | 9/10 | 6068 days | 48% |
| brianp | 8/10 | 6161 days | 47% |
| Rose and Jess Damon and Esler | 6/10 | 6198 days | 39% |
| OliverG1 | 9/10 | 6277 days | 48% |
| Anji Sprinks | 8/10 | 6286 days | 47% |
| Ger | 6/10 | 6287 days | 39% |
| JanW | 8/10 | 6301 days | 47% |
| Ian | 8/10 | 6313 days | 47% |
| Tatjane | 2/10 | 6320 days | 11% |
| ChristineM | 10/10 | 6322 days | 48% |
| SebastianGermany1 | 9/10 | 6324 days | 48% |
| Paul | 9/10 | 6332 days | 48% |
| SiegfriedL | 10/10 | 6344 days | 48% |
| purplekat99 | 9/10 | 6379 days | 48% |
| Klaus | 7/10 | 6680 days | 44% |
| Volders | 10/10 | 6682 days | 48% |
| Dot & Gordon Quaid | 9/10 | 6696 days | 48% |
| Roger & Margaret | 8/10 | 6703 days | 47% |
| John Howlett | 7/10 | 6705 days | 44% |
| Dupre | 7/10 | 6758 days | 44% |
| Paul Cowie | 9/10 | 6764 days | 48% |
| Floren | 9/10 | 6778 days | 48% |
| Killerblow | 10/10 | 6787 days | 48% |
| Lisbeth Johansson | 8/10 | 6891 days | 47% |
| TeamFlorida | 10/10 | 7026 days | 48% |
| John Beirne | 10/10 | 7043 days | 48% |
| Pete | 9/10 | 7043 days | 48% |
| Anne | 8/10 | 7043 days | 47% |
| Anna | 9/10 | 7048 days | 48% |
| Mitch | 8/10 | 7054 days | 47% |
| Ian | 9/10 | 7071 days | 48% |
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
-2.15% Adjustment
There may be an adjustment if this experience hasn't received any reviews within the last 118 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 | -2.12% |
| 198 | -2.13% |
| 199 | -2.14% |
| 200 | -2.15% |
| 201 | -2.16% |
| 202 | -2.17% |
| 203 | -2.18% |
| … | … |
Balancing Adjustment
3.79% 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.