Ranking Score Explained

Hi there, 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.

Nick Morrison's avatar

Nick Morrison

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

80.01%

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 Face-to-Face Weight Relative Weight
Dina Schurer 7/10 1407 days true 3.99 93%
J P Schurer 7/10 1407 days true 3.99 93%
Dries 9/10 1447 days true 4.31 100%
Jasmine Rogers 10/10 1460 days true 4.29 99%
Sophie 10/10 1467 days true 4.27 99%
Nicholas Strozza 8/10 1500 days true 4.0 93%
Jill Stebbing 9/10 1723 days true 3.77 87%
Lothen 8/10 1744 days true 3.54 82%
Lea Watterson 9/10 1766 days true 3.69 86%
James Esele 7/10 1820 days true 3.26 76%
Philipp 2/10 1828 days true 2.67 62%
Coralie Ambrosino 8/10 2086 days true 2.91 67%
Christoph 10/10 2089 days true 3.05 71%
Fanny DeBon 8/10 2187 days true 2.72 63%
Hubert 10/10 2197 days true 2.84 66%
Sagi 2/10 2468 days true 1.73 40%
Henrik Suefke 10/10 2486 days true 2.28 53%
Kiernan Matthew 7/10 2491 days true 2.06 48%
Alexis Redor 9/10 2495 days true 2.26 52%
Lars Borgaa 4/10 2504 days true 1.77 41%
Mette, Bo, Viktor & Olivia Seligmann 4/10 2798 days 1.32 31%
Glenn Surzur 4/10 2825 days true 1.28 30%
Michael Walker 10/10 2831 days true 1.6 37%
Lorraine Walker 9/10 2831 days true 1.6 37%
Michael Nolan 10/10 2857 days 1.55 36%
Jim Woodruff 10/10 2857 days 1.55 36%
Lis Bon 10/10 2888 days 1.49 35%
Liam Day 10/10 2905 days true 1.46 34%
Auger 9/10 2926 days true 1.42 33%
Auger 9/10 2926 days true 1.42 33%
C Schaap 8/10 2930 days true 1.34 31%
Marjo Cousijn 9/10 2936 days true 1.4 32%
gareth williams 5/10 2980 days 1.06 25%
Dagette 8/10 2980 days 1.25 29%
Wright 10/10 3198 days true 0.88 21%
Emma Bagguley 4/10 3201 days true 0.69 16%
Hazel & Alan Damerell 10/10 3205 days true 0.87 20%
Michael & Rosemary Smith 9/10 3209 days true 0.86 20%
Koster 10/10 3209 days true 0.86 20%
John A Jerome 6/10 3209 days true 0.72 17%
Katrawa 5/10 3216 days true 0.69 16%
Jensen Bresbenbeek 7/10 3286 days true 0.65 15%
Rebecca & Hugh Small 5/10 3295 days true 0.56 13%
Steve 3/10 3299 days true 0.53 12%
topsy08 7/10 3529 days 0.22 5%
Gunter 9/10 3543 days true 0.21 5%
Tim Laurent 5/10 3551 days true 0.16 4%
Keith Ogley 6/10 3554 days true 0.16 4%
Lynda Hutchins 10/10 3554 days true 0.19 4%
Louise van der Hyden 4/10 3558 days true 0.14 3%
Katie Mitchell 9/10 3560 days 0.18 4%
Gerhard 8/10 3561 days true 0.17 4%
Kasten 8/10 3562 days true 0.16 4%
C P Lawrence 4/10 3564 days true 0.13 3%
Bucher Weruer 9/10 3564 days true 0.17 4%
Naomi Kosteaman 9/10 3564 days true 0.17 4%
Rian Bach 5/10 3566 days true 0.13 3%
Josef & Christine Evers 8/10 3569 days true 0.15 3%
Frank Schedler 5/10 3571 days true 0.13 3%
Gerd Pagel 7/10 3573 days true 0.14 3%
Charlie 9/10 3574 days true 0.15 3%
Dana Pagliarini 5/10 3576 days true 0.12 3%
Andy Martin 8/10 3577 days true 0.14 3%
Julia 5/10 3580 days true 0.11 3%
Doris Neuber 7/10 3587 days true 0.11 3%
Teknik151 4/10 3588 days 0.1 2%
Warris2500 4/10 3772 days 0.0 0%
Versteeg 7/10 3846 days true 0.0 0%
Victoria Slater 6/10 3899 days true 0.0 0%
Bowness 10/10 3912 days true 0.0 0%
David B 9/10 3920 days true 0.0 0%
Sievers 9/10 3928 days true 0.0 0%
Don & Alice 9/10 3929 days true 0.0 0%
Amanda Iavarone 10/10 3931 days true 0.0 0%
Sheila Morgan 10/10 3934 days true 0.0 0%
Wilbert Germ 9/10 3938 days true 0.0 0%
Ronny 6/10 3939 days true 0.0 0%
Annette Schmitt 4/10 3947 days true 0.0 0%
Annie 7/10 3947 days true 0.0 0%
Nadine Schaee 6/10 3950 days true 0.0 0%
Terry Phillips 8/10 3950 days true 0.0 0%
Chance McGuire 10/10 3953 days 0.0 0%
Richard Pearson 6/10 3963 days true 0.0 0%
cees juffermans 3/10 3966 days true 0.0 0%
wenerz 1/10 4000 days true 0.0 0%
Werner Zuis 1/10 4000 days true 0.0 0%
alasiac 10/10 4015 days true 0.0 0%
Mark Jenkins 5/10 4023 days true 0.0 0%
Silvana Thom 10/10 4025 days true 0.0 0%
Alexis De Wilde 7/10 4025 days true 0.0 0%
Cyriel Schacken 7/10 4025 days true 0.0 0%
Simon Bartholomew 10/10 4027 days true 0.0 0%
Marcel Schleinkcfer 10/10 4027 days true 0.0 0%
Thorben Thede 9/10 4027 days true 0.0 0%
Roma 9/10 4038 days true 0.0 0%
brianp 8/10 4131 days true 0.0 0%
Rose and Jess Damon and Esler 6/10 4168 days 0.0 0%
OliverG1 9/10 4247 days true 0.0 0%
Anji Sprinks 8/10 4256 days true 0.0 0%
Ger 6/10 4257 days true 0.0 0%
JanW 8/10 4271 days true 0.0 0%
Ian 8/10 4282 days 0.0 0%
Tatjane 2/10 4290 days true 0.0 0%
ChristineM 10/10 4292 days true 0.0 0%
SebastianGermany1 9/10 4294 days true 0.0 0%
Paul 9/10 4302 days true 0.0 0%
SiegfriedL 10/10 4314 days true 0.0 0%
purplekat99 9/10 4349 days 0.0 0%
Klaus 7/10 4650 days true 0.0 0%
Volders 10/10 4652 days true 0.0 0%
Dot & Gordon Quaid 9/10 4666 days 0.0 0%
Roger & Margaret 8/10 4673 days true 0.0 0%
John Howlett 7/10 4675 days true 0.0 0%
Dupre 7/10 4728 days true 0.0 0%
Paul Cowie 9/10 4734 days true 0.0 0%
Floren 9/10 4748 days true 0.0 0%
Killerblow 10/10 4756 days 0.0 0%
Lisbeth Johansson 8/10 4861 days true 0.0 0%
TeamFlorida 10/10 4996 days true 0.0 0%
John Beirne 10/10 5013 days true 0.0 0%
Pete 9/10 5013 days true 0.0 0%
Anne 8/10 5013 days true 0.0 0%
Anna 9/10 5018 days true 0.0 0%
Mitch 8/10 5024 days true 0.0 0%
Ian 9/10 5041 days true 0.0 0%

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

-4.07% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 43 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 -4.01%
198 -4.03%
199 -4.05%
200 -4.07%
201 -4.09%
202 -4.11%
203 -4.13%

Final Ranking Score

76%

The final ranking score once adjustments and rounding has been applied. This value is cached and recalculated each day. Therefore it may not be precisely accurate based on the other values presented.

If you have any questions or comments about our ranking score calculation please get in touch at info@rankers.co.nz.