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

78.18%

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 7/10 692 days true 36.88 100%
J P Schurer 7/10 692 days true 36.88 100%
Dries 9/10 732 days true 31.06 84%
Jasmine Rogers 10/10 745 days true 29.29 79%
Sophie 10/10 752 days true 28.37 76%
Nicholas Strozza 8/10 785 days true 24.27 65%
Jill Stebbing 9/10 1008 days true 7.44 19%
Lothen 8/10 1029 days true 6.83 17%
Lea Watterson 9/10 1051 days true 6.37 16%
James Esele 7/10 1105 days true 5.98 15%
Philipp 2/10 1113 days true 5.37 13%
Coralie Ambrosino 8/10 1371 days true 5.55 13%
Christoph 10/10 1374 days true 5.54 13%
Fanny DeBon 8/10 1472 days true 5.38 13%
Hubert 10/10 1482 days true 5.36 13%
Sagi 2/10 1753 days true 4.43 10%
Henrik Suefke 10/10 1771 days true 4.89 12%
Kiernan Matthew 7/10 1776 days true 4.88 12%
Alexis Redor 9/10 1780 days true 4.87 12%
Lars Borgaa 4/10 1789 days true 4.58 11%
Mette, Bo, Viktor & Olivia Seligmann 4/10 2083 days 3.39 7%
Glenn Surzur 4/10 2110 days true 4.08 9%
Michael Walker 10/10 2116 days true 4.32 10%
Lorraine Walker 9/10 2116 days true 4.32 10%
Michael Nolan 10/10 2142 days 3.57 8%
Jim Woodruff 10/10 2142 days 3.57 8%
Lis Bon 10/10 2173 days 3.52 8%
Liam Day 10/10 2190 days true 4.2 10%
Auger 9/10 2211 days true 4.17 10%
Auger 9/10 2211 days true 4.17 10%
C Schaap 8/10 2215 days true 4.16 10%
Marjo Cousijn 9/10 2221 days true 4.15 10%
gareth williams 5/10 2265 days 3.4 7%
Dagette 8/10 2265 days 3.4 7%
Wright 10/10 2483 days true 3.72 8%
Emma Bagguley 4/10 2486 days true 3.5 8%
Hazel & Alan Damerell 10/10 2490 days true 3.71 8%
Michael & Rosemary Smith 9/10 2494 days true 3.7 8%
Koster 10/10 2494 days true 3.7 8%
John A Jerome 6/10 2494 days true 3.7 8%
Katrawa 5/10 2501 days true 3.69 8%
Jensen Bresbenbeek 7/10 2571 days true 3.57 8%
Rebecca & Hugh Small 5/10 2580 days true 3.56 8%
Steve 3/10 2584 days true 3.29 7%
topsy08 7/10 2814 days 2.65 5%
Gunter 9/10 2828 days true 3.15 7%
Tim Laurent 5/10 2836 days true 3.14 7%
Keith Ogley 6/10 2839 days true 3.13 7%
Lynda Hutchins 10/10 2839 days true 3.13 7%
Louise van der Hyden 4/10 2843 days true 2.94 6%
Katie Mitchell 9/10 2845 days 2.6 5%
Gerhard 8/10 2846 days true 3.12 7%
Kasten 8/10 2847 days true 3.12 7%
C P Lawrence 4/10 2849 days true 2.93 6%
Bucher Weruer 9/10 2849 days true 3.12 7%
Naomi Kosteaman 9/10 2849 days true 3.12 7%
Rian Bach 5/10 2851 days true 3.11 7%
Josef & Christine Evers 8/10 2854 days true 3.11 7%
Frank Schedler 5/10 2856 days true 3.11 7%
Gerd Pagel 7/10 2858 days true 3.1 7%
Charlie 9/10 2859 days true 3.1 7%
Dana Pagliarini 5/10 2861 days true 3.1 7%
Andy Martin 8/10 2862 days true 3.1 7%
Julia 5/10 2865 days true 3.09 7%
Doris Neuber 7/10 2872 days true 3.08 7%
Teknik151 4/10 2873 days 2.38 5%
Warris2500 4/10 3057 days 2.15 4%
Versteeg 7/10 3131 days true 2.65 5%
Victoria Slater 6/10 3184 days true 2.57 5%
Bowness 10/10 3197 days true 2.54 5%
David B 9/10 3205 days true 2.53 5%
Sievers 9/10 3213 days true 2.52 5%
Don & Alice 9/10 3214 days true 2.52 5%
Amanda Iavarone 10/10 3216 days true 2.51 5%
Sheila Morgan 10/10 3219 days true 2.51 5%
Wilbert Germ 9/10 3223 days true 2.5 5%
Ronny 6/10 3224 days true 2.5 5%
Annette Schmitt 4/10 3232 days true 2.34 5%
Annie 7/10 3232 days true 2.49 5%
Nadine Schaee 6/10 3235 days true 2.48 5%
Terry Phillips 8/10 3235 days true 2.48 5%
Chance McGuire 10/10 3238 days 2.06 4%
Richard Pearson 6/10 3248 days true 2.46 5%
cees juffermans 3/10 3251 days true 2.27 4%
wenerz 1/10 3285 days true 2.1 4%
Werner Zuis 1/10 3285 days true 2.1 4%
alasiac 10/10 3300 days true 2.38 5%
Mark Jenkins 5/10 3308 days true 2.36 5%
Silvana Thom 10/10 3310 days true 2.36 5%
Alexis De Wilde 7/10 3310 days true 2.36 5%
Cyriel Schacken 7/10 3310 days true 2.36 5%
Simon Bartholomew 10/10 3312 days true 2.36 5%
Marcel Schleinkcfer 10/10 3312 days true 2.36 5%
Thorben Thede 9/10 3312 days true 2.36 5%
Roma 9/10 3323 days true 2.34 5%
brianp 8/10 3416 days true 2.18 4%
Rose and Jess Damon and Esler 6/10 3453 days 1.77 3%
OliverG1 9/10 3532 days true 1.99 4%
Anji Sprinks 8/10 3541 days true 1.98 4%
Ger 6/10 3542 days true 1.98 4%
JanW 8/10 3556 days true 1.95 3%
Ian 8/10 3567 days 1.61 3%
Tatjane 2/10 3575 days true 1.73 3%
ChristineM 10/10 3577 days true 1.92 3%
SebastianGermany1 9/10 3579 days true 1.92 3%
Paul 9/10 3587 days true 1.9 3%
SiegfriedL 10/10 3599 days true 1.88 3%
purplekat99 9/10 3634 days 1.52 2%
Klaus 7/10 3935 days true 1.33 2%
Volders 10/10 3937 days true 1.33 2%
Dot & Gordon Quaid 9/10 3951 days 1.09 1%
Roger & Margaret 8/10 3958 days true 1.29 2%
John Howlett 7/10 3960 days true 1.29 2%
Dupre 7/10 4013 days true 1.2 1%
Paul Cowie 9/10 4019 days true 1.19 1%
Floren 9/10 4033 days true 1.17 1%
Killerblow 10/10 4041 days 0.96 1%
Lisbeth Johansson 8/10 4146 days true 0.98 1%
TeamFlorida 10/10 4281 days true 0.76 0%
John Beirne 10/10 4298 days true 0.73 0%
Pete 9/10 4298 days true 0.73 0%
Anne 8/10 4298 days true 0.73 0%
Anna 9/10 4303 days true 0.73 0%
Mitch 8/10 4309 days true 0.72 0%
Ian 9/10 4326 days true 0.69 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

71%

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.