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

80.22%

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 2952 days 97%
J P Schurer 7/10 2952 days 97%
Dries 9/10 2992 days 100%
Jasmine Rogers 10/10 3005 days 100%
Sophie 10/10 3012 days 99%
Nicholas Strozza 8/10 3045 days 95%
Jill Stebbing 9/10 3268 days 80%
Lothen 8/10 3289 days 78%
Lea Watterson 9/10 3311 days 77%
James Esele 7/10 3365 days 69%
Philipp 2/10 3373 days 33%
Coralie Ambrosino 8/10 3631 days 53%
Christoph 10/10 3634 days 54%
Fanny DeBon 8/10 3732 days 46%
Hubert 10/10 3742 days 46%
Sagi 2/10 4013 days 12%
Henrik Suefke 10/10 4031 days 25%
Kiernan Matthew 7/10 4036 days 23%
Alexis Redor 9/10 4040 days 24%
Lars Borgaa 4/10 4049 days 15%
Mette, Bo, Viktor & Olivia Seligmann 4/10 4343 days 1%
Glenn Surzur 4/10 4370 days 0%
Michael Walker 10/10 4376 days 0%
Lorraine Walker 9/10 4376 days 0%
Michael Nolan 10/10 4402 days 37%
Jim Woodruff 10/10 4402 days 37%
Lis Bon 10/10 4433 days 37%
Liam Day 10/10 4450 days 37%
Auger 9/10 4471 days 37%
Auger 9/10 4471 days 37%
C Schaap 8/10 4475 days 36%
Marjo Cousijn 9/10 4481 days 37%
gareth williams 5/10 4525 days 28%
Dagette 8/10 4525 days 36%
Wright 10/10 4743 days 37%
Emma Bagguley 4/10 4746 days 24%
Hazel & Alan Damerell 10/10 4750 days 37%
Michael & Rosemary Smith 9/10 4754 days 37%
Koster 10/10 4754 days 37%
John A Jerome 6/10 4754 days 32%
Katrawa 5/10 4761 days 28%
Jensen Bresbenbeek 7/10 4831 days 34%
Rebecca & Hugh Small 5/10 4840 days 28%
Steve 3/10 4844 days 20%
topsy08 7/10 5074 days 34%
Gunter 9/10 5088 days 37%
Tim Laurent 5/10 5096 days 28%
Keith Ogley 6/10 5099 days 32%
Lynda Hutchins 10/10 5099 days 37%
Louise van der Hyden 4/10 5103 days 24%
Katie Mitchell 9/10 5105 days 37%
Gerhard 8/10 5106 days 36%
Kasten 8/10 5107 days 36%
C P Lawrence 4/10 5109 days 24%
Bucher Weruer 9/10 5109 days 37%
Naomi Kosteaman 9/10 5109 days 37%
Rian Bach 5/10 5111 days 28%
Josef & Christine Evers 8/10 5114 days 36%
Frank Schedler 5/10 5116 days 28%
Gerd Pagel 7/10 5118 days 34%
Charlie 9/10 5119 days 37%
Dana Pagliarini 5/10 5121 days 28%
Andy Martin 8/10 5122 days 36%
Julia 5/10 5125 days 28%
Doris Neuber 7/10 5132 days 34%
Teknik151 4/10 5133 days 24%
Warris2500 4/10 5317 days 24%
Versteeg 7/10 5391 days 34%
Victoria Slater 6/10 5444 days 32%
Bowness 10/10 5457 days 37%
David B 9/10 5465 days 37%
Sievers 9/10 5473 days 37%
Don & Alice 9/10 5474 days 37%
Amanda Iavarone 10/10 5476 days 37%
Sheila Morgan 10/10 5479 days 37%
Wilbert Germ 9/10 5483 days 37%
Ronny 6/10 5484 days 32%
Annette Schmitt 4/10 5492 days 24%
Annie 7/10 5492 days 34%
Nadine Schaee 6/10 5495 days 32%
Terry Phillips 8/10 5495 days 36%
Chance McGuire 10/10 5498 days 37%
Richard Pearson 6/10 5508 days 32%
cees juffermans 3/10 5511 days 20%
wenerz 1/10 5545 days 15%
Werner Zuis 1/10 5545 days 15%
alasiac 10/10 5560 days 37%
Mark Jenkins 5/10 5568 days 28%
Silvana Thom 10/10 5570 days 37%
Alexis De Wilde 7/10 5570 days 34%
Cyriel Schacken 7/10 5570 days 34%
Simon Bartholomew 10/10 5572 days 37%
Marcel Schleinkcfer 10/10 5572 days 37%
Thorben Thede 9/10 5572 days 37%
Roma 9/10 5583 days 37%
brianp 8/10 5676 days 36%
Rose and Jess Damon and Esler 6/10 5713 days 32%
OliverG1 9/10 5792 days 37%
Anji Sprinks 8/10 5801 days 36%
Ger 6/10 5802 days 32%
JanW 8/10 5816 days 36%
Ian 8/10 5828 days 36%
Tatjane 2/10 5835 days 17%
ChristineM 10/10 5837 days 37%
SebastianGermany1 9/10 5839 days 37%
Paul 9/10 5847 days 37%
SiegfriedL 10/10 5859 days 37%
purplekat99 9/10 5894 days 37%
Klaus 7/10 6195 days 34%
Volders 10/10 6197 days 37%
Dot & Gordon Quaid 9/10 6211 days 37%
Roger & Margaret 8/10 6218 days 36%
John Howlett 7/10 6220 days 34%
Dupre 7/10 6273 days 34%
Paul Cowie 9/10 6279 days 37%
Floren 9/10 6293 days 37%
Killerblow 10/10 6302 days 37%
Lisbeth Johansson 8/10 6406 days 36%
TeamFlorida 10/10 6541 days 37%
John Beirne 10/10 6558 days 37%
Pete 9/10 6558 days 37%
Anne 8/10 6558 days 36%
Anna 9/10 6563 days 37%
Mitch 8/10 6569 days 36%
Ian 9/10 6586 days 37%

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

-4.14% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 53 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 -4.08%
198 -4.10%
199 -4.12%
200 -4.14%
201 -4.16%
202 -4.19%
203 -4.21%

Balancing Adjustment

4.24% 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.