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 1605 days 92%
J P Schurer 7/10 1605 days 92%
Dries 9/10 1645 days 100%
Jasmine Rogers 10/10 1658 days 99%
Sophie 10/10 1665 days 99%
Nicholas Strozza 8/10 1698 days 92%
Jill Stebbing 9/10 1921 days 85%
Lothen 8/10 1942 days 80%
Lea Watterson 9/10 1964 days 83%
James Esele 7/10 2018 days 72%
Philipp 2/10 2026 days 58%
Coralie Ambrosino 8/10 2284 days 63%
Christoph 10/10 2287 days 66%
Fanny DeBon 8/10 2385 days 57%
Hubert 10/10 2395 days 60%
Sagi 2/10 2666 days 33%
Henrik Suefke 10/10 2684 days 45%
Kiernan Matthew 7/10 2689 days 40%
Alexis Redor 9/10 2693 days 44%
Lars Borgaa 4/10 2702 days 33%
Mette, Bo, Viktor & Olivia Seligmann 4/10 2996 days 21%
Glenn Surzur 4/10 3023 days 20%
Michael Walker 10/10 3029 days 27%
Lorraine Walker 9/10 3029 days 27%
Michael Nolan 10/10 3055 days 25%
Jim Woodruff 10/10 3055 days 25%
Lis Bon 10/10 3086 days 24%
Liam Day 10/10 3103 days 23%
Auger 9/10 3124 days 22%
Auger 9/10 3124 days 22%
C Schaap 8/10 3128 days 20%
Marjo Cousijn 9/10 3134 days 21%
gareth williams 5/10 3178 days 14%
Dagette 8/10 3178 days 18%
Wright 10/10 3396 days 7%
Emma Bagguley 4/10 3399 days 4%
Hazel & Alan Damerell 10/10 3403 days 7%
Michael & Rosemary Smith 9/10 3407 days 7%
Koster 10/10 3407 days 7%
John A Jerome 6/10 3407 days 4%
Katrawa 5/10 3414 days 4%
Jensen Bresbenbeek 7/10 3484 days 2%
Rebecca & Hugh Small 5/10 3493 days 0%
Steve 3/10 3497 days 0%
topsy08 7/10 3727 days 18%
Gunter 9/10 3741 days 21%
Tim Laurent 5/10 3749 days 16%
Keith Ogley 6/10 3752 days 16%
Lynda Hutchins 10/10 3752 days 21%
Louise van der Hyden 4/10 3756 days 15%
Katie Mitchell 9/10 3758 days 21%
Gerhard 8/10 3759 days 19%
Kasten 8/10 3760 days 19%
C P Lawrence 4/10 3762 days 15%
Bucher Weruer 9/10 3762 days 21%
Naomi Kosteaman 9/10 3762 days 21%
Rian Bach 5/10 3764 days 16%
Josef & Christine Evers 8/10 3767 days 19%
Frank Schedler 5/10 3769 days 16%
Gerd Pagel 7/10 3771 days 18%
Charlie 9/10 3772 days 21%
Dana Pagliarini 5/10 3774 days 16%
Andy Martin 8/10 3775 days 19%
Julia 5/10 3778 days 16%
Doris Neuber 7/10 3785 days 18%
Teknik151 4/10 3786 days 15%
Warris2500 4/10 3970 days 15%
Versteeg 7/10 4044 days 18%
Victoria Slater 6/10 4097 days 16%
Bowness 10/10 4110 days 21%
David B 9/10 4118 days 21%
Sievers 9/10 4126 days 21%
Don & Alice 9/10 4127 days 21%
Amanda Iavarone 10/10 4129 days 21%
Sheila Morgan 10/10 4132 days 21%
Wilbert Germ 9/10 4136 days 21%
Ronny 6/10 4137 days 16%
Annette Schmitt 4/10 4145 days 15%
Annie 7/10 4145 days 18%
Nadine Schaee 6/10 4148 days 16%
Terry Phillips 8/10 4148 days 19%
Chance McGuire 10/10 4151 days 21%
Richard Pearson 6/10 4161 days 16%
cees juffermans 3/10 4164 days 15%
wenerz 1/10 4198 days 14%
Werner Zuis 1/10 4198 days 14%
alasiac 10/10 4213 days 21%
Mark Jenkins 5/10 4221 days 16%
Silvana Thom 10/10 4223 days 21%
Alexis De Wilde 7/10 4223 days 18%
Cyriel Schacken 7/10 4223 days 18%
Simon Bartholomew 10/10 4225 days 21%
Marcel Schleinkcfer 10/10 4225 days 21%
Thorben Thede 9/10 4225 days 21%
Roma 9/10 4236 days 21%
brianp 8/10 4329 days 19%
Rose and Jess Damon and Esler 6/10 4366 days 16%
OliverG1 9/10 4445 days 21%
Anji Sprinks 8/10 4454 days 19%
Ger 6/10 4455 days 16%
JanW 8/10 4469 days 19%
Ian 8/10 4481 days 19%
Tatjane 2/10 4489 days 14%
ChristineM 10/10 4490 days 21%
SebastianGermany1 9/10 4492 days 21%
Paul 9/10 4501 days 21%
SiegfriedL 10/10 4512 days 21%
purplekat99 9/10 4547 days 21%
Klaus 7/10 4848 days 18%
Volders 10/10 4850 days 21%
Dot & Gordon Quaid 9/10 4864 days 21%
Roger & Margaret 8/10 4871 days 19%
John Howlett 7/10 4873 days 18%
Dupre 7/10 4926 days 18%
Paul Cowie 9/10 4932 days 21%
Floren 9/10 4946 days 21%
Killerblow 10/10 4955 days 21%
Lisbeth Johansson 8/10 5059 days 19%
TeamFlorida 10/10 5194 days 21%
John Beirne 10/10 5211 days 21%
Pete 9/10 5211 days 21%
Anne 8/10 5211 days 19%
Anna 9/10 5216 days 21%
Mitch 8/10 5222 days 19%
Ian 9/10 5239 days 21%

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

-2.23% 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 -2.20%
198 -2.21%
199 -2.22%
200 -2.23%
201 -2.24%
202 -2.26%
203 -2.27%

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.