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

79 Valid Reviews

The Akaroa Dolphins experience has a total of 80 reviews. There are 79 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 79 valid reviews:

Rating Count Percentage
10/10 32
41%
9/10 26
33%
8/10 15
19%
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%

90.25% Average

The raw data average (mean) for all the Akaroa Dolphins valid reviews is 90.25% and is based on 79 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 79 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

90.85%

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
Lucy C 9/10 204 days 100%
Christine 9/10 263 days 95%
Tracey Cron 9/10 294 days 92%
Inga Hoffmann 10/10 994 days 7%
Freddrick Weiser 9/10 1331 days 5%
Mike Dw 9/10 1447 days 5%
Nolwen 9/10 1807 days 4%
The Beans 10/10 1815 days 4%
Ross D 10/10 1821 days 4%
Peter Passlack 10/10 1824 days 4%
Chea Hao Wong 10/10 1876 days 4%
Caroline Shaw 10/10 2046 days 3%
Pierre Mathis 10/10 2057 days 3%
Brenda Oomen 10/10 2060 days 3%
Estelle Daniel 10/10 2064 days 3%
Kim-Lara 8/10 2079 days 3%
Tamara 10/10 2093 days 3%
Sandra P 10/10 2120 days 3%
Marie Schmid 10/10 2448 days 2%
Angie Cairns 10/10 2478 days 2%
Jimmy Shaw 10/10 2731 days 2%
Wendy Hawkins 8/10 3152 days 1%
Roger Hawkins 9/10 3152 days 1%
Tanja Schlagermann 10/10 3159 days 1%
Alexander Mukasa 10/10 3159 days 1%
Erik Muchembled 10/10 3161 days 1%
Andrea Lang 8/10 3163 days 1%
Xtian_P 10/10 3247 days 1%
michellephil 10/10 3308 days 1%
nztintin 10/10 3522 days 0%
mandd 10/10 3522 days 0%
Orlando 9/10 3534 days 0%
Uwe Herrdum 9/10 3538 days 0%
Francis Corrigan 9/10 3552 days 0%
John & Vicki 9/10 3629 days 0%
G Tulloch 9/10 3851 days 1%
Edward Marhi 8/10 3854 days 1%
Robin Adair 9/10 3875 days 1%
Sandra Schulz 9/10 3882 days 1%
Derek Puplett 9/10 3892 days 1%
Martin Current 9/10 3903 days 1%
Hartmut Vogt 10/10 3904 days 1%
allesca 9/10 4008 days 1%
Mary Van 8/10 4069 days 1%
penz 9/10 4131 days 1%
victoriauk 8/10 4161 days 1%
Susanne Strassmann 6/10 4259 days 1%
M Sicard 9/10 4263 days 1%
Lasse Olesen 9/10 4274 days 1%
Keith Wilde 8/10 4276 days 1%
Sarah Goeckener 9/10 4353 days 1%
katharina 10/10 4353 days 1%
Katrin Wennin 8/10 4354 days 1%
Thorben Thede 9/10 4355 days 1%
Roma 10/10 4366 days 1%
HairyHaggis 10/10 4373 days 1%
Ronny 6/10 4592 days 1%
ChristinaV 10/10 4596 days 1%
JudithLehr 6/10 4599 days 1%
Steven 10/10 4603 days 1%
StijnH 8/10 4604 days 1%
FramiskaH 8/10 4605 days 1%
StefanGermany1 8/10 4605 days 1%
JaninaF 10/10 4605 days 1%
Tatjane 9/10 4618 days 1%
XaviG 9/10 4621 days 1%
JesusB 7/10 4621 days 1%
Denk 8/10 4649 days 1%
Katie Mitchell 10/10 4738 days 1%
Ben Ackland 8/10 4974 days 1%
Tessa McCormick 8/10 4984 days 1%
John Beirne 10/10 5341 days 1%
ranker_110 7/10 5345 days 1%
Christine 10/10 5350 days 1%
Helle 9/10 5352 days 1%
John 7/10 5352 days 1%
Reggie 10/10 5353 days 1%
Dave 9/10 5364 days 1%
Beate 8/10 5365 days 1%

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

-3.21% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 56 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 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.

The Akaroa Dolphins experience has been adjusted for 174 days. Adjustments are according to the following table.

Days Adjustment
171 -3.16%
172 -3.18%
173 -3.20%
174 -3.21%
175 -3.23%
176 -3.25%
177 -3.27%

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.