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 Swimming with 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

Swimming with Dolphins

Valid Reviews

60 Valid Reviews

The Swimming with Dolphins experience has a total of 61 reviews. There are 60 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 60 valid reviews:

Rating Count Percentage
10/10 23
38%
9/10 12
20%
8/10 12
20%
7/10 10
17%
6/10 2
3%
5/10 0
0%
4/10 1
2%
3/10 0
0%
2/10 0
0%
1/10 0
0%

86.67% Average

The raw data average (mean) for all the Swimming with Dolphins valid reviews is 86.67% and is based on 60 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

53 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 60 valid reviews, the experience has 53 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 53 face-to-face reviews:

Rating Count Percentage
10/10 18
34%
9/10 11
21%
8/10 12
23%
7/10 9
17%
6/10 2
4%
5/10 0
0%
4/10 1
2%
3/10 0
0%
2/10 0
0%
1/10 0
0%

85.66% Average

The raw data average (mean) for all the Swimming with Dolphins face-to-face reviews is 85.66% and is based on 53 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

83.86%

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
Isabel 4/10 1052 days true 5.98 94%
Alix 10/10 1055 days true 6.3 100%
Claire 10/10 1055 days true 6.3 100%
Lena 7/10 1095 days true 6.0 95%
Stefano 8/10 1122 days true 5.96 94%
Ivan Dupont 7/10 1126 days true 5.95 94%
Max Backelandt 7/10 1795 days true 4.85 75%
Marie Toulemonde 8/10 1795 days true 4.85 75%
Annika Marz 7/10 1808 days true 4.83 74%
Julian Zeissler 7/10 1808 days true 4.83 74%
Lena Hanhart 7/10 1813 days true 4.82 74%
Barbara 10/10 1831 days true 4.79 73%
Mark and Eefie 9/10 2256 days true 4.09 61%
Nigel Leighton 10/10 2259 days true 4.09 61%
Laura Diepeveen 8/10 2551 days true 3.61 53%
Stam 8/10 2557 days true 3.6 53%
cpope 10/10 2606 days 2.93 41%
Naomi Kosteaman 9/10 2916 days true 3.01 42%
Samuel Prechel 9/10 2932 days true 2.98 42%
Niels Van Welsenes 10/10 2940 days true 2.97 42%
salsnz 10/10 3216 days 2.09 26%
Jvjm Family 6/10 3265 days true 2.43 32%
Sinjc Grude 8/10 3302 days true 2.37 31%
Rachel & Barak 9/10 3303 days true 2.37 31%
Jeremy & Sarah Rind 10/10 3304 days true 2.37 31%
Andreas Sterki 8/10 3375 days true 2.25 29%
Gina Swindells 10/10 3378 days true 2.25 29%
bogaard 9/10 3493 days true 2.06 26%
Amy_B 10/10 3599 days true 1.88 23%
NancyB 9/10 3599 days true 1.88 23%
TraceyM 8/10 3599 days true 1.88 23%
DanielGermany 6/10 3604 days true 1.88 22%
AndreaT 10/10 3607 days true 1.87 22%
Sue Green 10/10 3611 days 1.55 17%
Greg18 7/10 3611 days 1.55 17%
DavidJ 8/10 3617 days true 1.85 22%
Stolz 10/10 3634 days true 1.83 22%
LindaV 7/10 3645 days true 1.81 21%
Ian 10/10 3659 days true 1.79 21%
HelenUK 8/10 3661 days true 1.78 21%
enthusejohn 10/10 3661 days 1.48 16%
Camilla E 9/10 3666 days 1.48 15%
Zoe Summers 10/10 3823 days 1.26 12%
Benjamin Throk 9/10 3990 days true 1.24 11%
Marion 10/10 3991 days true 1.24 11%
Maria Fahlander 7/10 4001 days true 1.22 11%
Ellie 10/10 4004 days true 1.22 11%
Sanne 8/10 4004 days true 1.22 11%
Claire Masling 8/10 4011 days true 1.21 11%
Sally and David Wallis 9/10 4011 days true 1.21 11%
Jody 9/10 4023 days true 1.19 10%
Eliase 7/10 4025 days true 1.18 10%
Vicki Cook 9/10 4038 days true 1.16 10%
Carola Haaparinne 10/10 4039 days true 1.16 10%
Wayne Best 10/10 4047 days true 1.15 10%
Martin Wright 10/10 4059 days true 1.13 9%
Floren 9/10 4100 days true 1.06 8%
Sebastian 8/10 4329 days true 0.68 1%
Tracy 10/10 4374 days true 0.61 0%
Jacobien 10/10 4381 days true 0.6 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 Swimming with Dolphins 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 Swimming with 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 Swimming with Dolphins 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

77%

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.