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

85.59%

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 2119 days 79%
Alix 10/10 2122 days 100%
Claire 10/10 2122 days 100%
Lena 7/10 2162 days 88%
Stefano 8/10 2189 days 91%
Ivan Dupont 7/10 2193 days 87%
Max Backelandt 7/10 2862 days 46%
Marie Toulemonde 8/10 2862 days 48%
Annika Marz 7/10 2875 days 45%
Julian Zeissler 7/10 2875 days 45%
Lena Hanhart 7/10 2880 days 45%
Barbara 10/10 2898 days 48%
Mark and Eefie 9/10 3323 days 20%
Nigel Leighton 10/10 3326 days 20%
Laura Diepeveen 8/10 3618 days 0%
Stam 8/10 3624 days 0%
cpope 10/10 3673 days 32%
Naomi Kosteaman 9/10 3983 days 32%
Samuel Prechel 9/10 3999 days 32%
Niels Van Welsenes 10/10 4007 days 32%
salsnz 10/10 4283 days 32%
Jvjm Family 6/10 4332 days 27%
Sinjc Grude 8/10 4369 days 31%
Rachel & Barak 9/10 4370 days 32%
Jeremy & Sarah Rind 10/10 4371 days 32%
Andreas Sterki 8/10 4442 days 31%
Gina Swindells 10/10 4445 days 32%
bogaard 9/10 4560 days 32%
Amy_B 10/10 4666 days 32%
NancyB 9/10 4666 days 32%
TraceyM 8/10 4666 days 31%
DanielGermany 6/10 4671 days 27%
AndreaT 10/10 4674 days 32%
Sue Green 10/10 4678 days 32%
Greg18 7/10 4678 days 29%
DavidJ 8/10 4684 days 31%
Stolz 10/10 4701 days 32%
LindaV 7/10 4712 days 29%
Ian 10/10 4726 days 32%
HelenUK 8/10 4728 days 31%
enthusejohn 10/10 4728 days 32%
Camilla E 9/10 4733 days 32%
Zoe Summers 10/10 4890 days 32%
Benjamin Throk 9/10 5057 days 32%
Marion 10/10 5058 days 32%
Maria Fahlander 7/10 5068 days 29%
Ellie 10/10 5071 days 32%
Sanne 8/10 5071 days 31%
Claire Masling 8/10 5078 days 31%
Sally and David Wallis 9/10 5078 days 32%
Jody 9/10 5090 days 32%
Eliase 7/10 5092 days 29%
Vicki Cook 9/10 5105 days 32%
Carola Haaparinne 10/10 5106 days 32%
Wayne Best 10/10 5114 days 32%
Martin Wright 10/10 5126 days 32%
Floren 9/10 5167 days 32%
Sebastian 8/10 5396 days 31%
Tracy 10/10 5441 days 32%
Jacobien 10/10 5448 days 32%

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

-4.11% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 47 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 -4.04%
198 -4.07%
199 -4.09%
200 -4.11%
201 -4.13%
202 -4.15%
203 -4.17%

Final Ranking Score

81%

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.