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 Akaroa Dolphins.

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

Akaroa Dolphins

Valid Reviews

75 Valid Reviews

The Akaroa Dolphins experience has a total of 76 reviews. There are 75 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 75 valid reviews:

Rating Count Percentage
10/10 31
41%
9/10 23
31%
8/10 15
20%
7/10 3
4%
6/10 3
4%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

90.13% Average

The raw data average (mean) for all the Akaroa Dolphins valid reviews is 90.13% and is based on 75 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

59 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 75 valid reviews, the experience has 59 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 59 face-to-face reviews:

Rating Count Percentage
10/10 19
32%
9/10 20
34%
8/10 14
24%
7/10 3
5%
6/10 3
5%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

88.31% Average

The raw data average (mean) for all the Akaroa Dolphins face-to-face reviews is 88.31% and is based on 59 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

92.21%

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
Freddrick Weiser 9/10 326 days 83.16 100%
Mike Dw 9/10 442 days true 82.85 100%
Nolwen 9/10 802 days true 22.32 26%
The Beans 10/10 811 days 17.78 21%
Ross D 10/10 816 days true 20.8 24%
Peter Passlack 10/10 819 days 17.07 20%
Chea Hao Wong 10/10 872 days 12.88 15%
Caroline Shaw 10/10 1041 days true 6.55 7%
Pierre Mathis 10/10 1052 days true 6.35 7%
Brenda Oomen 10/10 1055 days true 6.3 7%
Estelle Daniel 10/10 1059 days 5.21 6%
Kim-Lara 8/10 1074 days true 6.08 7%
Tamara 10/10 1088 days true 6.01 7%
Sandra P 10/10 1116 days 4.97 5%
Marie Schmid 10/10 1443 days true 5.43 6%
Angie Cairns 10/10 1473 days true 5.38 6%
Jimmy Shaw 10/10 1726 days 4.14 4%
Wendy Hawkins 8/10 2147 days true 4.27 4%
Roger Hawkins 9/10 2147 days true 4.27 4%
Tanja Schlagermann 10/10 2154 days true 4.26 4%
Alexander Mukasa 10/10 2154 days true 4.26 4%
Erik Muchembled 10/10 2156 days true 4.26 4%
Andrea Lang 8/10 2158 days true 4.25 4%
Xtian_P 10/10 2242 days 3.43 3%
michellephil 10/10 2303 days 3.35 3%
nztintin 10/10 2517 days 3.05 3%
mandd 10/10 2517 days 3.05 3%
Orlando 9/10 2529 days true 3.64 4%
Uwe Herrdum 9/10 2533 days true 3.64 4%
Francis Corrigan 9/10 2547 days true 3.61 4%
John & Vicki 9/10 2624 days true 3.49 3%
G Tulloch 9/10 2846 days true 3.12 3%
Edward Marhi 8/10 2849 days true 3.12 3%
Robin Adair 9/10 2870 days true 3.08 3%
Sandra Schulz 9/10 2877 days true 3.07 3%
Derek Puplett 9/10 2887 days true 3.05 3%
Martin Current 9/10 2898 days true 3.04 3%
Hartmut Vogt 10/10 2899 days true 3.03 3%
allesca 9/10 3003 days 2.39 2%
Mary Van 8/10 3064 days 2.3 2%
penz 9/10 3126 days 2.22 2%
victoriauk 8/10 3156 days true 2.61 2%
Susanne Strassmann 6/10 3254 days true 2.45 2%
M Sicard 9/10 3258 days true 2.44 2%
Lasse Olesen 9/10 3269 days true 2.43 2%
Keith Wilde 8/10 3271 days true 2.42 2%
Sarah Goeckener 9/10 3348 days true 2.3 2%
katharina 10/10 3348 days true 2.3 2%
Katrin Wennin 8/10 3349 days true 2.29 2%
Thorben Thede 9/10 3350 days true 2.29 2%
Roma 10/10 3361 days true 2.28 2%
HairyHaggis 10/10 3368 days 1.89 2%
Ronny 6/10 3587 days true 1.9 2%
ChristinaV 10/10 3591 days true 1.9 2%
JudithLehr 6/10 3594 days true 1.89 2%
Steven 10/10 3598 days true 1.89 2%
StijnH 8/10 3599 days true 1.88 2%
FramiskaH 8/10 3600 days true 1.88 2%
StefanGermany1 8/10 3600 days true 1.88 2%
JaninaF 10/10 3600 days true 1.88 2%
Tatjane 9/10 3613 days true 1.86 1%
XaviG 9/10 3616 days true 1.86 1%
JesusB 7/10 3616 days true 1.86 1%
Denk 8/10 3644 days true 1.81 1%
Katie Mitchell 10/10 3733 days 1.39 1%
Ben Ackland 8/10 3969 days true 1.28 1%
Tessa McCormick 8/10 3979 days true 1.26 1%
John Beirne 10/10 4336 days true 0.67 0%
ranker_110 7/10 4340 days true 0.67 0%
Christine 10/10 4345 days true 0.66 0%
Helle 9/10 4347 days true 0.65 0%
John 7/10 4347 days true 0.65 0%
Reggie 10/10 4348 days true 0.65 0%
Dave 9/10 4359 days true 0.63 0%
Beate 8/10 4360 days true 0.63 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 Akaroa Dolphins experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.82% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Akaroa Dolphins 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 Akaroa Dolphins experience has been adjusted for 191 days. Adjustments are according to the following table.

Days Adjustment
188 -3.76%
189 -3.78%
190 -3.80%
191 -3.82%
192 -3.84%
193 -3.86%
194 -3.88%

Final Ranking Score

88%

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.