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

78.94%

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 7/10 609 days true 50.91 100%
J P Schurer 7/10 609 days true 50.91 100%
Dries 9/10 649 days true 43.82 86%
Jasmine Rogers 10/10 662 days true 41.65 82%
Sophie 10/10 669 days true 40.51 79%
Nicholas Strozza 8/10 702 days true 35.37 69%
Jill Stebbing 9/10 925 days true 11.5 21%
Lothen 8/10 946 days true 10.22 19%
Lea Watterson 9/10 968 days true 9.07 16%
James Esele 7/10 1022 days true 7.01 12%
Philipp 2/10 1030 days true 6.12 11%
Coralie Ambrosino 8/10 1288 days true 5.68 10%
Christoph 10/10 1291 days true 5.68 10%
Fanny DeBon 8/10 1389 days true 5.52 9%
Hubert 10/10 1399 days true 5.5 9%
Sagi 2/10 1670 days true 4.55 7%
Henrik Suefke 10/10 1688 days true 5.03 8%
Kiernan Matthew 7/10 1693 days true 5.02 8%
Alexis Redor 9/10 1697 days true 5.01 8%
Lars Borgaa 4/10 1706 days true 4.7 8%
Mette, Bo, Viktor & Olivia Seligmann 4/10 2000 days 3.5 5%
Glenn Surzur 4/10 2027 days true 4.21 7%
Michael Walker 10/10 2033 days true 4.46 7%
Lorraine Walker 9/10 2033 days true 4.46 7%
Michael Nolan 10/10 2059 days 3.68 6%
Jim Woodruff 10/10 2059 days 3.68 6%
Lis Bon 10/10 2090 days 3.64 6%
Liam Day 10/10 2107 days true 4.34 7%
Auger 9/10 2128 days true 4.3 7%
Auger 9/10 2128 days true 4.3 7%
C Schaap 8/10 2132 days true 4.3 7%
Marjo Cousijn 9/10 2138 days true 4.29 7%
gareth williams 5/10 2182 days 3.51 5%
Dagette 8/10 2182 days 3.51 5%
Wright 10/10 2400 days true 3.85 6%
Emma Bagguley 4/10 2403 days true 3.63 6%
Hazel & Alan Damerell 10/10 2407 days true 3.84 6%
Michael & Rosemary Smith 9/10 2411 days true 3.84 6%
Koster 10/10 2411 days true 3.84 6%
John A Jerome 6/10 2411 days true 3.84 6%
Katrawa 5/10 2418 days true 3.83 6%
Jensen Bresbenbeek 7/10 2488 days true 3.71 6%
Rebecca & Hugh Small 5/10 2497 days true 3.7 6%
Steve 3/10 2501 days true 3.41 5%
topsy08 7/10 2731 days 2.76 4%
Gunter 9/10 2745 days true 3.29 5%
Tim Laurent 5/10 2753 days true 3.27 5%
Keith Ogley 6/10 2756 days true 3.27 5%
Lynda Hutchins 10/10 2756 days true 3.27 5%
Louise van der Hyden 4/10 2760 days true 3.07 4%
Katie Mitchell 9/10 2762 days 2.72 4%
Gerhard 8/10 2763 days true 3.26 5%
Kasten 8/10 2764 days true 3.26 5%
C P Lawrence 4/10 2766 days true 3.06 4%
Bucher Weruer 9/10 2766 days true 3.25 5%
Naomi Kosteaman 9/10 2766 days true 3.25 5%
Rian Bach 5/10 2768 days true 3.25 5%
Josef & Christine Evers 8/10 2771 days true 3.24 5%
Frank Schedler 5/10 2773 days true 3.24 5%
Gerd Pagel 7/10 2775 days true 3.24 5%
Charlie 9/10 2776 days true 3.24 5%
Dana Pagliarini 5/10 2778 days true 3.23 5%
Andy Martin 8/10 2779 days true 3.23 5%
Julia 5/10 2782 days true 3.23 5%
Doris Neuber 7/10 2789 days true 3.22 5%
Teknik151 4/10 2790 days 2.49 3%
Warris2500 4/10 2974 days 2.26 3%
Versteeg 7/10 3048 days true 2.79 4%
Victoria Slater 6/10 3101 days true 2.7 4%
Bowness 10/10 3114 days true 2.68 4%
David B 9/10 3122 days true 2.67 4%
Sievers 9/10 3130 days true 2.65 4%
Don & Alice 9/10 3131 days true 2.65 4%
Amanda Iavarone 10/10 3133 days true 2.65 4%
Sheila Morgan 10/10 3136 days true 2.64 4%
Wilbert Germ 9/10 3140 days true 2.64 4%
Ronny 6/10 3141 days true 2.64 4%
Annette Schmitt 4/10 3149 days true 2.47 3%
Annie 7/10 3149 days true 2.62 4%
Nadine Schaee 6/10 3152 days true 2.62 4%
Terry Phillips 8/10 3152 days true 2.62 4%
Chance McGuire 10/10 3155 days 2.18 3%
Richard Pearson 6/10 3165 days true 2.6 4%
cees juffermans 3/10 3168 days true 2.4 3%
wenerz 1/10 3202 days true 2.22 3%
Werner Zuis 1/10 3202 days true 2.22 3%
alasiac 10/10 3217 days true 2.51 3%
Mark Jenkins 5/10 3225 days true 2.5 3%
Silvana Thom 10/10 3227 days true 2.5 3%
Alexis De Wilde 7/10 3227 days true 2.5 3%
Cyriel Schacken 7/10 3227 days true 2.5 3%
Simon Bartholomew 10/10 3229 days true 2.49 3%
Marcel Schleinkcfer 10/10 3229 days true 2.49 3%
Thorben Thede 9/10 3229 days true 2.49 3%
Roma 9/10 3240 days true 2.47 3%
brianp 8/10 3333 days true 2.32 3%
Rose and Jess Damon and Esler 6/10 3370 days 1.88 2%
OliverG1 9/10 3449 days true 2.13 3%
Anji Sprinks 8/10 3458 days true 2.12 3%
Ger 6/10 3459 days true 2.11 3%
JanW 8/10 3473 days true 2.09 3%
Ian 8/10 3485 days 1.73 2%
Tatjane 2/10 3493 days true 1.85 2%
ChristineM 10/10 3494 days true 2.06 2%
SebastianGermany1 9/10 3496 days true 2.05 2%
Paul 9/10 3505 days true 2.04 2%
SiegfriedL 10/10 3516 days true 2.02 2%
purplekat99 9/10 3551 days 1.64 2%
Klaus 7/10 3852 days true 1.47 1%
Volders 10/10 3854 days true 1.46 1%
Dot & Gordon Quaid 9/10 3868 days 1.2 1%
Roger & Margaret 8/10 3875 days true 1.43 1%
John Howlett 7/10 3877 days true 1.43 1%
Dupre 7/10 3930 days true 1.34 1%
Paul Cowie 9/10 3936 days true 1.33 1%
Floren 9/10 3950 days true 1.31 1%
Killerblow 10/10 3959 days 1.08 1%
Lisbeth Johansson 8/10 4063 days true 1.12 1%
TeamFlorida 10/10 4198 days true 0.9 0%
John Beirne 10/10 4215 days true 0.87 0%
Pete 9/10 4215 days true 0.87 0%
Anne 8/10 4215 days true 0.87 0%
Anna 9/10 4220 days true 0.86 0%
Mitch 8/10 4226 days true 0.85 0%
Ian 9/10 4243 days true 0.83 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

-7.28% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 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 364 days.

The Oamaru Blue Penguin Colony experience has been adjusted for 364 days. Adjustments are according to the following table.

Days Adjustment
361 -7.22%
362 -7.24%
363 -7.26%
364 -7.28%
365 -7.30%
366 -7.32%
367 -7.34%

Final Ranking Score

72%

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.