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

79.56%

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 1300 days true 4.18 93%
J P Schurer 7/10 1300 days true 4.18 93%
Dries 9/10 1340 days true 4.52 100%
Jasmine Rogers 10/10 1353 days true 4.5 99%
Sophie 10/10 1360 days true 4.48 99%
Nicholas Strozza 8/10 1393 days true 4.2 93%
Jill Stebbing 9/10 1616 days true 3.98 88%
Lothen 8/10 1637 days true 3.74 83%
Lea Watterson 9/10 1659 days true 3.9 86%
James Esele 7/10 1713 days true 3.45 76%
Philipp 2/10 1721 days true 2.83 63%
Coralie Ambrosino 8/10 1979 days true 3.11 69%
Christoph 10/10 1982 days true 3.26 72%
Fanny DeBon 8/10 2080 days true 2.92 65%
Hubert 10/10 2090 days true 3.05 68%
Sagi 2/10 2361 days true 1.89 42%
Henrik Suefke 10/10 2379 days true 2.49 55%
Kiernan Matthew 7/10 2384 days true 2.25 50%
Alexis Redor 9/10 2388 days true 2.47 55%
Lars Borgaa 4/10 2397 days true 1.94 43%
Mette, Bo, Viktor & Olivia Seligmann 4/10 2691 days 1.48 33%
Glenn Surzur 4/10 2718 days true 1.44 32%
Michael Walker 10/10 2724 days true 1.81 40%
Lorraine Walker 9/10 2724 days true 1.81 40%
Michael Nolan 10/10 2750 days 1.76 39%
Jim Woodruff 10/10 2750 days 1.76 39%
Lis Bon 10/10 2781 days 1.7 38%
Liam Day 10/10 2798 days true 1.67 37%
Auger 9/10 2819 days true 1.63 36%
Auger 9/10 2819 days true 1.63 36%
C Schaap 8/10 2823 days true 1.54 34%
Marjo Cousijn 9/10 2829 days true 1.61 36%
gareth williams 5/10 2873 days 1.23 27%
Dagette 8/10 2873 days 1.44 32%
Wright 10/10 3091 days true 1.09 24%
Emma Bagguley 4/10 3094 days true 0.86 19%
Hazel & Alan Damerell 10/10 3098 days true 1.08 24%
Michael & Rosemary Smith 9/10 3102 days true 1.07 24%
Koster 10/10 3102 days true 1.07 24%
John A Jerome 6/10 3102 days true 0.89 20%
Katrawa 5/10 3109 days true 0.86 19%
Jensen Bresbenbeek 7/10 3179 days true 0.84 19%
Rebecca & Hugh Small 5/10 3188 days true 0.73 16%
Steve 3/10 3192 days true 0.69 15%
topsy08 7/10 3422 days 0.41 9%
Gunter 9/10 3436 days true 0.42 9%
Tim Laurent 5/10 3444 days true 0.33 7%
Keith Ogley 6/10 3447 days true 0.33 7%
Lynda Hutchins 10/10 3447 days true 0.4 9%
Louise van der Hyden 4/10 3451 days true 0.31 7%
Katie Mitchell 9/10 3453 days 0.39 9%
Gerhard 8/10 3454 days true 0.36 8%
Kasten 8/10 3455 days true 0.36 8%
C P Lawrence 4/10 3457 days true 0.3 7%
Bucher Weruer 9/10 3457 days true 0.38 8%
Naomi Kosteaman 9/10 3457 days true 0.38 8%
Rian Bach 5/10 3459 days true 0.3 7%
Josef & Christine Evers 8/10 3462 days true 0.35 8%
Frank Schedler 5/10 3464 days true 0.29 7%
Gerd Pagel 7/10 3466 days true 0.33 7%
Charlie 9/10 3467 days true 0.36 8%
Dana Pagliarini 5/10 3469 days true 0.29 6%
Andy Martin 8/10 3470 days true 0.33 7%
Julia 5/10 3473 days true 0.28 6%
Doris Neuber 7/10 3480 days true 0.3 7%
Teknik151 4/10 3481 days 0.26 6%
Warris2500 4/10 3665 days 0.0 0%
Versteeg 7/10 3739 days true 0.0 0%
Victoria Slater 6/10 3792 days true 0.0 0%
Bowness 10/10 3805 days true 0.0 0%
David B 9/10 3813 days true 0.0 0%
Sievers 9/10 3821 days true 0.0 0%
Don & Alice 9/10 3822 days true 0.0 0%
Amanda Iavarone 10/10 3824 days true 0.0 0%
Sheila Morgan 10/10 3827 days true 0.0 0%
Wilbert Germ 9/10 3831 days true 0.0 0%
Ronny 6/10 3832 days true 0.0 0%
Annette Schmitt 4/10 3840 days true 0.0 0%
Annie 7/10 3840 days true 0.0 0%
Nadine Schaee 6/10 3843 days true 0.0 0%
Terry Phillips 8/10 3843 days true 0.0 0%
Chance McGuire 10/10 3846 days 0.0 0%
Richard Pearson 6/10 3856 days true 0.0 0%
cees juffermans 3/10 3859 days true 0.0 0%
wenerz 1/10 3893 days true 0.0 0%
Werner Zuis 1/10 3893 days true 0.0 0%
alasiac 10/10 3908 days true 0.0 0%
Mark Jenkins 5/10 3916 days true 0.0 0%
Silvana Thom 10/10 3918 days true 0.0 0%
Alexis De Wilde 7/10 3918 days true 0.0 0%
Cyriel Schacken 7/10 3918 days true 0.0 0%
Simon Bartholomew 10/10 3920 days true 0.0 0%
Marcel Schleinkcfer 10/10 3920 days true 0.0 0%
Thorben Thede 9/10 3920 days true 0.0 0%
Roma 9/10 3931 days true 0.0 0%
brianp 8/10 4024 days true 0.0 0%
Rose and Jess Damon and Esler 6/10 4061 days 0.0 0%
OliverG1 9/10 4140 days true 0.0 0%
Anji Sprinks 8/10 4149 days true 0.0 0%
Ger 6/10 4150 days true 0.0 0%
JanW 8/10 4164 days true 0.0 0%
Ian 8/10 4176 days 0.0 0%
Tatjane 2/10 4183 days true 0.0 0%
ChristineM 10/10 4185 days true 0.0 0%
SebastianGermany1 9/10 4187 days true 0.0 0%
Paul 9/10 4195 days true 0.0 0%
SiegfriedL 10/10 4207 days true 0.0 0%
purplekat99 9/10 4242 days 0.0 0%
Klaus 7/10 4543 days true 0.0 0%
Volders 10/10 4545 days true 0.0 0%
Dot & Gordon Quaid 9/10 4559 days 0.0 0%
Roger & Margaret 8/10 4566 days true 0.0 0%
John Howlett 7/10 4568 days true 0.0 0%
Dupre 7/10 4621 days true 0.0 0%
Paul Cowie 9/10 4627 days true 0.0 0%
Floren 9/10 4641 days true 0.0 0%
Killerblow 10/10 4650 days 0.0 0%
Lisbeth Johansson 8/10 4754 days true 0.0 0%
TeamFlorida 10/10 4889 days true 0.0 0%
John Beirne 10/10 4906 days true 0.0 0%
Pete 9/10 4906 days true 0.0 0%
Anne 8/10 4906 days true 0.0 0%
Anna 9/10 4911 days true 0.0 0%
Mitch 8/10 4917 days true 0.0 0%
Ian 9/10 4934 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

-2.28% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 115 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 -2.24%
198 -2.26%
199 -2.27%
200 -2.28%
201 -2.29%
202 -2.30%
203 -2.31%

Final Ranking Score

77%

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.