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 60 valid reviews. There are no invalid reviews 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

81.24%

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
Isabel 4/10 687 days 95%
Alix 10/10 690 days 100%
Claire 10/10 690 days 100%
Lena 7/10 730 days 84%
Stefano 8/10 757 days 74%
Ivan Dupont 7/10 761 days 72%
Max Backelandt 7/10 1430 days 12%
Marie Toulemonde 8/10 1430 days 12%
Annika Marz 7/10 1443 days 12%
Julian Zeissler 7/10 1443 days 12%
Lena Hanhart 7/10 1448 days 12%
Barbara 10/10 1466 days 12%
Mark and Eefie 9/10 1891 days 10%
Nigel Leighton 10/10 1894 days 10%
Laura Diepeveen 8/10 2186 days 8%
Stam 8/10 2192 days 8%
cpope 10/10 2241 days 6%
Naomi Kosteaman 9/10 2551 days 7%
Samuel Prechel 9/10 2567 days 7%
Niels Van Welsenes 10/10 2575 days 7%
salsnz 10/10 2851 days 4%
Jvjm Family 6/10 2900 days 5%
Sinjc Grude 8/10 2937 days 5%
Rachel & Barak 9/10 2938 days 5%
Jeremy & Sarah Rind 10/10 2939 days 5%
Andreas Sterki 8/10 3010 days 5%
Gina Swindells 10/10 3013 days 5%
bogaard 9/10 3128 days 4%
Amy_B 10/10 3234 days 4%
NancyB 9/10 3234 days 4%
TraceyM 8/10 3234 days 4%
DanielGermany 6/10 3239 days 4%
AndreaT 10/10 3242 days 4%
Sue Green 10/10 3246 days 2%
Greg18 7/10 3246 days 2%
DavidJ 8/10 3252 days 3%
Stolz 10/10 3269 days 3%
LindaV 7/10 3280 days 3%
Ian 10/10 3294 days 3%
HelenUK 8/10 3296 days 3%
enthusejohn 10/10 3296 days 2%
Camilla E 9/10 3301 days 2%
Zoe Summers 10/10 3458 days 2%
Benjamin Throk 9/10 3625 days 2%
Marion 10/10 3626 days 2%
Maria Fahlander 7/10 3636 days 2%
Ellie 10/10 3639 days 2%
Sanne 8/10 3639 days 2%
Claire Masling 8/10 3646 days 2%
Sally and David Wallis 9/10 3646 days 2%
Jody 9/10 3658 days 2%
Eliase 7/10 3660 days 2%
Vicki Cook 9/10 3673 days 2%
Carola Haaparinne 10/10 3674 days 2%
Wayne Best 10/10 3682 days 2%
Martin Wright 10/10 3694 days 1%
Floren 9/10 3735 days 1%
Sebastian 8/10 3964 days 0%
Tracy 10/10 4009 days 0%
Jacobien 10/10 4016 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 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

74%

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.