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

80.25%

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 1525 days true 3.29 79%
Alix 10/10 1528 days true 4.15 100%
Claire 10/10 1528 days true 4.15 100%
Lena 7/10 1568 days true 3.71 89%
Stefano 8/10 1595 days true 3.82 92%
Ivan Dupont 7/10 1599 days true 3.65 88%
Max Backelandt 7/10 2268 days true 2.46 59%
Marie Toulemonde 8/10 2268 days true 2.57 62%
Annika Marz 7/10 2281 days true 2.44 59%
Julian Zeissler 7/10 2281 days true 2.44 59%
Lena Hanhart 7/10 2286 days true 2.43 58%
Barbara 10/10 2304 days true 2.63 63%
Mark and Eefie 9/10 2729 days true 1.8 43%
Nigel Leighton 10/10 2732 days true 1.8 43%
Laura Diepeveen 8/10 3024 days true 1.16 28%
Stam 8/10 3030 days true 1.15 28%
cpope 10/10 3079 days 1.12 27%
Naomi Kosteaman 9/10 3389 days true 0.51 12%
Samuel Prechel 9/10 3405 days true 0.48 12%
Niels Van Welsenes 10/10 3413 days true 0.46 11%
salsnz 10/10 3689 days 0.0 0%
Jvjm Family 6/10 3738 days true 0.0 0%
Sinjc Grude 8/10 3775 days true 0.0 0%
Rachel & Barak 9/10 3776 days true 0.0 0%
Jeremy & Sarah Rind 10/10 3777 days true 0.0 0%
Andreas Sterki 8/10 3848 days true 0.0 0%
Gina Swindells 10/10 3851 days true 0.0 0%
bogaard 9/10 3966 days true 0.0 0%
Amy_B 10/10 4072 days true 0.0 0%
NancyB 9/10 4072 days true 0.0 0%
TraceyM 8/10 4072 days true 0.0 0%
DanielGermany 6/10 4077 days true 0.0 0%
AndreaT 10/10 4080 days true 0.0 0%
Sue Green 10/10 4084 days 0.0 0%
Greg18 7/10 4084 days 0.0 0%
DavidJ 8/10 4091 days true 0.0 0%
Stolz 10/10 4108 days true 0.0 0%
LindaV 7/10 4118 days true 0.0 0%
Ian 10/10 4133 days true 0.0 0%
HelenUK 8/10 4134 days true 0.0 0%
enthusejohn 10/10 4135 days 0.0 0%
Camilla E 9/10 4140 days 0.0 0%
Zoe Summers 10/10 4296 days 0.0 0%
Benjamin Throk 9/10 4463 days true 0.0 0%
Marion 10/10 4464 days true 0.0 0%
Maria Fahlander 7/10 4474 days true 0.0 0%
Ellie 10/10 4477 days true 0.0 0%
Sanne 8/10 4477 days true 0.0 0%
Claire Masling 8/10 4484 days true 0.0 0%
Sally and David Wallis 9/10 4484 days true 0.0 0%
Jody 9/10 4496 days true 0.0 0%
Eliase 7/10 4498 days true 0.0 0%
Vicki Cook 9/10 4511 days true 0.0 0%
Carola Haaparinne 10/10 4512 days true 0.0 0%
Wayne Best 10/10 4520 days true 0.0 0%
Martin Wright 10/10 4532 days true 0.0 0%
Floren 9/10 4573 days true 0.0 0%
Sebastian 8/10 4802 days true 0.0 0%
Tracy 10/10 4847 days true 0.0 0%
Jacobien 10/10 4854 days true 0.0 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

-2.34% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 110 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 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.

The Swimming with Dolphins experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -2.31%
198 -2.32%
199 -2.33%
200 -2.34%
201 -2.36%
202 -2.37%
203 -2.38%

Final Ranking Score

78%

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.