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

79.49%

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 7/10 520 days true 68.58 100%
J P Schurer 7/10 520 days true 68.58 100%
Dries 9/10 560 days true 60.43 88%
Jasmine Rogers 10/10 573 days true 57.81 84%
Sophie 10/10 580 days true 56.43 82%
Nicholas Strozza 8/10 613 days true 50.18 73%
Jill Stebbing 9/10 836 days true 18.76 26%
Lothen 8/10 857 days true 16.77 23%
Lea Watterson 9/10 879 days true 14.87 21%
James Esele 7/10 933 days true 10.99 15%
Philipp 2/10 941 days true 9.46 13%
Coralie Ambrosino 8/10 1199 days true 5.83 7%
Christoph 10/10 1202 days true 5.82 7%
Fanny DeBon 8/10 1300 days true 5.66 7%
Hubert 10/10 1310 days true 5.65 7%
Sagi 2/10 1581 days true 4.68 5%
Henrik Suefke 10/10 1599 days true 5.17 6%
Kiernan Matthew 7/10 1604 days true 5.16 6%
Alexis Redor 9/10 1608 days true 5.16 6%
Lars Borgaa 4/10 1617 days true 4.84 6%
Mette, Bo, Viktor & Olivia Seligmann 4/10 1911 days 3.61 4%
Glenn Surzur 4/10 1938 days true 4.35 5%
Michael Walker 10/10 1944 days true 4.6 5%
Lorraine Walker 9/10 1944 days true 4.6 5%
Michael Nolan 10/10 1970 days 3.8 4%
Jim Woodruff 10/10 1970 days 3.8 4%
Lis Bon 10/10 2001 days 3.76 4%
Liam Day 10/10 2018 days true 4.48 5%
Auger 9/10 2039 days true 4.45 5%
Auger 9/10 2039 days true 4.45 5%
C Schaap 8/10 2043 days true 4.44 5%
Marjo Cousijn 9/10 2049 days true 4.43 5%
gareth williams 5/10 2093 days 3.63 4%
Dagette 8/10 2093 days 3.63 4%
Wright 10/10 2311 days true 4.0 4%
Emma Bagguley 4/10 2314 days true 3.76 4%
Hazel & Alan Damerell 10/10 2318 days true 3.99 4%
Michael & Rosemary Smith 9/10 2322 days true 3.98 4%
Koster 10/10 2322 days true 3.98 4%
John A Jerome 6/10 2322 days true 3.98 4%
Katrawa 5/10 2329 days true 3.97 4%
Jensen Bresbenbeek 7/10 2399 days true 3.86 4%
Rebecca & Hugh Small 5/10 2408 days true 3.84 4%
Steve 3/10 2412 days true 3.55 4%
topsy08 7/10 2642 days 2.88 3%
Gunter 9/10 2656 days true 3.43 4%
Tim Laurent 5/10 2664 days true 3.42 4%
Keith Ogley 6/10 2667 days true 3.42 4%
Lynda Hutchins 10/10 2667 days true 3.42 4%
Louise van der Hyden 4/10 2671 days true 3.21 3%
Katie Mitchell 9/10 2673 days 2.84 3%
Gerhard 8/10 2674 days true 3.4 4%
Kasten 8/10 2675 days true 3.4 4%
C P Lawrence 4/10 2677 days true 3.2 3%
Bucher Weruer 9/10 2677 days true 3.4 4%
Naomi Kosteaman 9/10 2677 days true 3.4 4%
Rian Bach 5/10 2679 days true 3.4 4%
Josef & Christine Evers 8/10 2682 days true 3.39 4%
Frank Schedler 5/10 2684 days true 3.39 4%
Gerd Pagel 7/10 2686 days true 3.38 4%
Charlie 9/10 2687 days true 3.38 4%
Dana Pagliarini 5/10 2689 days true 3.38 4%
Andy Martin 8/10 2690 days true 3.38 4%
Julia 5/10 2693 days true 3.37 4%
Doris Neuber 7/10 2700 days true 3.36 4%
Teknik151 4/10 2701 days 2.6 2%
Warris2500 4/10 2885 days 2.37 2%
Versteeg 7/10 2959 days true 2.94 3%
Victoria Slater 6/10 3012 days true 2.85 3%
Bowness 10/10 3025 days true 2.83 3%
David B 9/10 3033 days true 2.81 3%
Sievers 9/10 3041 days true 2.8 3%
Don & Alice 9/10 3042 days true 2.8 3%
Amanda Iavarone 10/10 3044 days true 2.8 3%
Sheila Morgan 10/10 3047 days true 2.79 3%
Wilbert Germ 9/10 3051 days true 2.78 3%
Ronny 6/10 3052 days true 2.78 3%
Annette Schmitt 4/10 3060 days true 2.61 2%
Annie 7/10 3060 days true 2.77 3%
Nadine Schaee 6/10 3063 days true 2.76 3%
Terry Phillips 8/10 3063 days true 2.76 3%
Chance McGuire 10/10 3066 days 2.3 2%
Richard Pearson 6/10 3076 days true 2.74 3%
cees juffermans 3/10 3079 days true 2.53 2%
wenerz 1/10 3113 days true 2.35 2%
Werner Zuis 1/10 3113 days true 2.35 2%
alasiac 10/10 3128 days true 2.66 2%
Mark Jenkins 5/10 3136 days true 2.64 2%
Silvana Thom 10/10 3138 days true 2.64 2%
Alexis De Wilde 7/10 3138 days true 2.64 2%
Cyriel Schacken 7/10 3138 days true 2.64 2%
Simon Bartholomew 10/10 3140 days true 2.64 2%
Marcel Schleinkcfer 10/10 3140 days true 2.64 2%
Thorben Thede 9/10 3140 days true 2.64 2%
Roma 9/10 3151 days true 2.62 2%
brianp 8/10 3244 days true 2.47 2%
Rose and Jess Damon and Esler 6/10 3281 days 2.01 2%
OliverG1 9/10 3360 days true 2.28 2%
Anji Sprinks 8/10 3369 days true 2.26 2%
Ger 6/10 3370 days true 2.26 2%
JanW 8/10 3384 days true 2.24 2%
Ian 8/10 3396 days 1.85 1%
Tatjane 2/10 3403 days true 1.99 1%
ChristineM 10/10 3405 days true 2.2 2%
SebastianGermany1 9/10 3407 days true 2.2 2%
Paul 9/10 3415 days true 2.19 2%
SiegfriedL 10/10 3427 days true 2.17 2%
purplekat99 9/10 3462 days 1.76 1%
Klaus 7/10 3763 days true 1.61 1%
Volders 10/10 3765 days true 1.61 1%
Dot & Gordon Quaid 9/10 3779 days 1.32 1%
Roger & Margaret 8/10 3786 days true 1.58 1%
John Howlett 7/10 3788 days true 1.57 1%
Dupre 7/10 3841 days true 1.49 1%
Paul Cowie 9/10 3847 days true 1.48 1%
Floren 9/10 3861 days true 1.45 1%
Killerblow 10/10 3870 days 1.2 0%
Lisbeth Johansson 8/10 3974 days true 1.27 0%
TeamFlorida 10/10 4109 days true 1.05 0%
John Beirne 10/10 4126 days true 1.02 0%
Pete 9/10 4126 days true 1.02 0%
Anne 8/10 4126 days true 1.02 0%
Anna 9/10 4131 days true 1.01 0%
Mitch 8/10 4137 days true 1.0 0%
Ian 9/10 4154 days true 0.97 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

-7.08% 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 354 days. Adjustments are according to the following table.

Days Adjustment
351 -7.02%
352 -7.04%
353 -7.06%
354 -7.08%
355 -7.10%
356 -7.12%
357 -7.14%

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.