G'day, 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.

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Cymen Crick

Rankers Owner

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

80.25%

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 2986 days 97%
J P Schurer 7/10 2986 days 97%
Dries 9/10 3026 days 100%
Jasmine Rogers 10/10 3039 days 100%
Sophie 10/10 3046 days 99%
Nicholas Strozza 8/10 3079 days 95%
Jill Stebbing 9/10 3302 days 80%
Lothen 8/10 3323 days 77%
Lea Watterson 9/10 3345 days 76%
James Esele 7/10 3399 days 68%
Philipp 2/10 3407 days 33%
Coralie Ambrosino 8/10 3665 days 52%
Christoph 10/10 3668 days 53%
Fanny DeBon 8/10 3766 days 45%
Hubert 10/10 3776 days 45%
Sagi 2/10 4047 days 11%
Henrik Suefke 10/10 4065 days 23%
Kiernan Matthew 7/10 4070 days 21%
Alexis Redor 9/10 4074 days 22%
Lars Borgaa 4/10 4083 days 14%
Mette, Bo, Viktor & Olivia Seligmann 4/10 4377 days 0%
Glenn Surzur 4/10 4404 days 25%
Michael Walker 10/10 4410 days 38%
Lorraine Walker 9/10 4410 days 38%
Michael Nolan 10/10 4436 days 38%
Jim Woodruff 10/10 4436 days 38%
Lis Bon 10/10 4467 days 38%
Liam Day 10/10 4484 days 38%
Auger 9/10 4505 days 38%
Auger 9/10 4505 days 38%
C Schaap 8/10 4509 days 37%
Marjo Cousijn 9/10 4515 days 38%
gareth williams 5/10 4559 days 29%
Dagette 8/10 4559 days 37%
Wright 10/10 4777 days 38%
Emma Bagguley 4/10 4780 days 25%
Hazel & Alan Damerell 10/10 4784 days 38%
Michael & Rosemary Smith 9/10 4788 days 38%
Koster 10/10 4788 days 38%
John A Jerome 6/10 4788 days 33%
Katrawa 5/10 4795 days 29%
Jensen Bresbenbeek 7/10 4865 days 35%
Rebecca & Hugh Small 5/10 4874 days 29%
Steve 3/10 4878 days 21%
topsy08 7/10 5108 days 35%
Gunter 9/10 5122 days 38%
Tim Laurent 5/10 5130 days 29%
Keith Ogley 6/10 5133 days 33%
Lynda Hutchins 10/10 5133 days 38%
Louise van der Hyden 4/10 5137 days 25%
Katie Mitchell 9/10 5139 days 38%
Gerhard 8/10 5140 days 37%
Kasten 8/10 5141 days 37%
C P Lawrence 4/10 5143 days 25%
Bucher Weruer 9/10 5143 days 38%
Naomi Kosteaman 9/10 5143 days 38%
Rian Bach 5/10 5145 days 29%
Josef & Christine Evers 8/10 5148 days 37%
Frank Schedler 5/10 5150 days 29%
Gerd Pagel 7/10 5152 days 35%
Charlie 9/10 5153 days 38%
Dana Pagliarini 5/10 5155 days 29%
Andy Martin 8/10 5156 days 37%
Julia 5/10 5159 days 29%
Doris Neuber 7/10 5166 days 35%
Teknik151 4/10 5167 days 25%
Warris2500 4/10 5351 days 25%
Versteeg 7/10 5425 days 35%
Victoria Slater 6/10 5478 days 33%
Bowness 10/10 5491 days 38%
David B 9/10 5499 days 38%
Sievers 9/10 5507 days 38%
Don & Alice 9/10 5508 days 38%
Amanda Iavarone 10/10 5510 days 38%
Sheila Morgan 10/10 5513 days 38%
Wilbert Germ 9/10 5517 days 38%
Ronny 6/10 5518 days 33%
Annette Schmitt 4/10 5526 days 25%
Annie 7/10 5526 days 35%
Nadine Schaee 6/10 5529 days 33%
Terry Phillips 8/10 5529 days 37%
Chance McGuire 10/10 5532 days 38%
Richard Pearson 6/10 5542 days 33%
cees juffermans 3/10 5545 days 21%
wenerz 1/10 5579 days 15%
Werner Zuis 1/10 5579 days 15%
alasiac 10/10 5594 days 38%
Mark Jenkins 5/10 5602 days 29%
Silvana Thom 10/10 5604 days 38%
Alexis De Wilde 7/10 5604 days 35%
Cyriel Schacken 7/10 5604 days 35%
Simon Bartholomew 10/10 5606 days 38%
Marcel Schleinkcfer 10/10 5606 days 38%
Thorben Thede 9/10 5606 days 38%
Roma 9/10 5617 days 38%
brianp 8/10 5710 days 37%
Rose and Jess Damon and Esler 6/10 5747 days 33%
OliverG1 9/10 5826 days 38%
Anji Sprinks 8/10 5835 days 37%
Ger 6/10 5836 days 33%
JanW 8/10 5850 days 37%
Ian 8/10 5861 days 37%
Tatjane 2/10 5869 days 17%
ChristineM 10/10 5871 days 38%
SebastianGermany1 9/10 5873 days 38%
Paul 9/10 5881 days 38%
SiegfriedL 10/10 5893 days 38%
purplekat99 9/10 5928 days 38%
Klaus 7/10 6229 days 35%
Volders 10/10 6231 days 38%
Dot & Gordon Quaid 9/10 6245 days 38%
Roger & Margaret 8/10 6252 days 37%
John Howlett 7/10 6254 days 35%
Dupre 7/10 6307 days 35%
Paul Cowie 9/10 6313 days 38%
Floren 9/10 6327 days 38%
Killerblow 10/10 6335 days 38%
Lisbeth Johansson 8/10 6440 days 37%
TeamFlorida 10/10 6575 days 38%
John Beirne 10/10 6592 days 38%
Pete 9/10 6592 days 38%
Anne 8/10 6592 days 37%
Anna 9/10 6597 days 38%
Mitch 8/10 6603 days 37%
Ian 9/10 6620 days 38%

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

-3.84% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 59 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 -3.78%
198 -3.80%
199 -3.82%
200 -3.84%
201 -3.86%
202 -3.88%
203 -3.90%

Balancing Adjustment

4.12% 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.