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

79.06%

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 1577 days 92%
J P Schurer 7/10 1577 days 92%
Dries 9/10 1617 days 100%
Jasmine Rogers 10/10 1630 days 99%
Sophie 10/10 1637 days 99%
Nicholas Strozza 8/10 1670 days 92%
Jill Stebbing 9/10 1893 days 85%
Lothen 8/10 1914 days 80%
Lea Watterson 9/10 1936 days 83%
James Esele 7/10 1990 days 72%
Philipp 2/10 1998 days 58%
Coralie Ambrosino 8/10 2256 days 63%
Christoph 10/10 2259 days 66%
Fanny DeBon 8/10 2357 days 58%
Hubert 10/10 2367 days 60%
Sagi 2/10 2638 days 33%
Henrik Suefke 10/10 2656 days 45%
Kiernan Matthew 7/10 2661 days 40%
Alexis Redor 9/10 2665 days 45%
Lars Borgaa 4/10 2674 days 33%
Mette, Bo, Viktor & Olivia Seligmann 4/10 2968 days 21%
Glenn Surzur 4/10 2995 days 20%
Michael Walker 10/10 3001 days 27%
Lorraine Walker 9/10 3001 days 27%
Michael Nolan 10/10 3027 days 26%
Jim Woodruff 10/10 3027 days 26%
Lis Bon 10/10 3058 days 24%
Liam Day 10/10 3075 days 23%
Auger 9/10 3096 days 22%
Auger 9/10 3096 days 22%
C Schaap 8/10 3100 days 20%
Marjo Cousijn 9/10 3106 days 21%
gareth williams 5/10 3150 days 14%
Dagette 8/10 3150 days 18%
Wright 10/10 3368 days 8%
Emma Bagguley 4/10 3371 days 4%
Hazel & Alan Damerell 10/10 3375 days 7%
Michael & Rosemary Smith 9/10 3379 days 7%
Koster 10/10 3379 days 7%
John A Jerome 6/10 3379 days 5%
Katrawa 5/10 3386 days 4%
Jensen Bresbenbeek 7/10 3456 days 2%
Rebecca & Hugh Small 5/10 3465 days 1%
Steve 3/10 3469 days 0%
topsy08 7/10 3699 days 17%
Gunter 9/10 3713 days 20%
Tim Laurent 5/10 3721 days 14%
Keith Ogley 6/10 3724 days 15%
Lynda Hutchins 10/10 3724 days 20%
Louise van der Hyden 4/10 3728 days 14%
Katie Mitchell 9/10 3730 days 20%
Gerhard 8/10 3731 days 18%
Kasten 8/10 3732 days 18%
C P Lawrence 4/10 3734 days 14%
Bucher Weruer 9/10 3734 days 20%
Naomi Kosteaman 9/10 3734 days 20%
Rian Bach 5/10 3736 days 14%
Josef & Christine Evers 8/10 3739 days 18%
Frank Schedler 5/10 3741 days 14%
Gerd Pagel 7/10 3743 days 17%
Charlie 9/10 3744 days 20%
Dana Pagliarini 5/10 3746 days 14%
Andy Martin 8/10 3747 days 18%
Julia 5/10 3750 days 14%
Doris Neuber 7/10 3757 days 17%
Teknik151 4/10 3758 days 14%
Warris2500 4/10 3942 days 14%
Versteeg 7/10 4016 days 17%
Victoria Slater 6/10 4069 days 15%
Bowness 10/10 4082 days 20%
David B 9/10 4090 days 20%
Sievers 9/10 4098 days 20%
Don & Alice 9/10 4099 days 20%
Amanda Iavarone 10/10 4101 days 20%
Sheila Morgan 10/10 4104 days 20%
Wilbert Germ 9/10 4108 days 20%
Ronny 6/10 4109 days 15%
Annette Schmitt 4/10 4117 days 14%
Annie 7/10 4117 days 17%
Nadine Schaee 6/10 4120 days 15%
Terry Phillips 8/10 4120 days 18%
Chance McGuire 10/10 4123 days 20%
Richard Pearson 6/10 4133 days 15%
cees juffermans 3/10 4136 days 13%
wenerz 1/10 4170 days 12%
Werner Zuis 1/10 4170 days 12%
alasiac 10/10 4185 days 20%
Mark Jenkins 5/10 4193 days 14%
Silvana Thom 10/10 4195 days 20%
Alexis De Wilde 7/10 4195 days 17%
Cyriel Schacken 7/10 4195 days 17%
Simon Bartholomew 10/10 4197 days 20%
Marcel Schleinkcfer 10/10 4197 days 20%
Thorben Thede 9/10 4197 days 20%
Roma 9/10 4208 days 20%
brianp 8/10 4301 days 18%
Rose and Jess Damon and Esler 6/10 4338 days 15%
OliverG1 9/10 4417 days 20%
Anji Sprinks 8/10 4426 days 18%
Ger 6/10 4427 days 15%
JanW 8/10 4441 days 18%
Ian 8/10 4452 days 18%
Tatjane 2/10 4460 days 13%
ChristineM 10/10 4462 days 20%
SebastianGermany1 9/10 4464 days 20%
Paul 9/10 4472 days 20%
SiegfriedL 10/10 4484 days 20%
purplekat99 9/10 4519 days 20%
Klaus 7/10 4820 days 17%
Volders 10/10 4822 days 20%
Dot & Gordon Quaid 9/10 4836 days 20%
Roger & Margaret 8/10 4843 days 18%
John Howlett 7/10 4845 days 17%
Dupre 7/10 4898 days 17%
Paul Cowie 9/10 4904 days 20%
Floren 9/10 4918 days 20%
Killerblow 10/10 4926 days 20%
Lisbeth Johansson 8/10 5031 days 18%
TeamFlorida 10/10 5166 days 20%
John Beirne 10/10 5183 days 20%
Pete 9/10 5183 days 20%
Anne 8/10 5183 days 18%
Anna 9/10 5188 days 20%
Mitch 8/10 5194 days 18%
Ian 9/10 5211 days 20%

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

-2.76% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 93 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 -2.72%
198 -2.73%
199 -2.74%
200 -2.76%
201 -2.77%
202 -2.79%
203 -2.80%

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.