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

74 Valid Reviews

The Akaroa Dolphins experience has a total of 75 reviews. There are 74 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 74 valid reviews:

Rating Count Percentage
10/10 31
42%
9/10 22
30%
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%

90.14% Average

The raw data average (mean) for all the Akaroa Dolphins valid reviews is 90.14% and is based on 74 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 74 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

94.73%

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
Mike Dw 9/10 109 days 100%
Nolwen 9/10 469 days 66%
The Beans 10/10 478 days 54%
Ross D 10/10 483 days 64%
Peter Passlack 10/10 486 days 53%
Chea Hao Wong 10/10 539 days 45%
Caroline Shaw 10/10 708 days 29%
Pierre Mathis 10/10 719 days 27%
Brenda Oomen 10/10 722 days 27%
Estelle Daniel 10/10 726 days 22%
Kim-Lara 8/10 741 days 25%
Tamara 10/10 755 days 23%
Sandra P 10/10 783 days 17%
Marie Schmid 10/10 1110 days 4%
Angie Cairns 10/10 1140 days 4%
Jimmy Shaw 10/10 1393 days 3%
Wendy Hawkins 8/10 1814 days 3%
Roger Hawkins 9/10 1814 days 3%
Tanja Schlagermann 10/10 1821 days 3%
Alexander Mukasa 10/10 1821 days 3%
Erik Muchembled 10/10 1823 days 3%
Andrea Lang 8/10 1825 days 3%
Xtian_P 10/10 1909 days 2%
michellephil 10/10 1970 days 2%
nztintin 10/10 2184 days 2%
mandd 10/10 2184 days 2%
Orlando 9/10 2196 days 3%
Uwe Herrdum 9/10 2200 days 3%
Francis Corrigan 9/10 2214 days 3%
John & Vicki 9/10 2291 days 2%
G Tulloch 9/10 2513 days 2%
Edward Marhi 8/10 2516 days 2%
Robin Adair 9/10 2537 days 2%
Sandra Schulz 9/10 2544 days 2%
Derek Puplett 9/10 2554 days 2%
Martin Current 9/10 2565 days 2%
Hartmut Vogt 10/10 2566 days 2%
allesca 9/10 2670 days 1%
Mary Van 8/10 2731 days 1%
penz 9/10 2793 days 1%
victoriauk 8/10 2823 days 2%
Susanne Strassmann 6/10 2921 days 2%
M Sicard 9/10 2925 days 2%
Lasse Olesen 9/10 2936 days 2%
Keith Wilde 8/10 2938 days 2%
Sarah Goeckener 9/10 3015 days 1%
katharina 10/10 3015 days 1%
Katrin Wennin 8/10 3016 days 1%
Thorben Thede 9/10 3017 days 1%
Roma 10/10 3028 days 1%
HairyHaggis 10/10 3035 days 1%
Ronny 6/10 3254 days 1%
ChristinaV 10/10 3259 days 1%
JudithLehr 6/10 3261 days 1%
Steven 10/10 3265 days 1%
StijnH 8/10 3266 days 1%
FramiskaH 8/10 3267 days 1%
StefanGermany1 8/10 3267 days 1%
JaninaF 10/10 3267 days 1%
Tatjane 9/10 3280 days 1%
XaviG 9/10 3283 days 1%
JesusB 7/10 3283 days 1%
Denk 8/10 3311 days 1%
Katie Mitchell 10/10 3400 days 1%
Ben Ackland 8/10 3636 days 1%
Tessa McCormick 8/10 3646 days 1%
John Beirne 10/10 4003 days 0%
ranker_110 7/10 4007 days 0%
Christine 10/10 4012 days 0%
Helle 9/10 4014 days 0%
John 7/10 4014 days 0%
Reggie 10/10 4015 days 0%
Dave 9/10 4026 days 0%
Beate 8/10 4027 days 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

-1.96% 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 98 days. Adjustments are according to the following table.

Days Adjustment
95 -1.90%
96 -1.92%
97 -1.94%
98 -1.96%
99 -1.98%
100 -2.00%
101 -2.02%

Final Ranking Score

93%

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.