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

84.86%

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 Relative Weight
Isabel 4/10 1793 days 75%
Alix 10/10 1796 days 100%
Claire 10/10 1796 days 100%
Lena 7/10 1836 days 87%
Stefano 8/10 1863 days 90%
Ivan Dupont 7/10 1867 days 85%
Max Backelandt 7/10 2536 days 46%
Marie Toulemonde 8/10 2536 days 49%
Annika Marz 7/10 2549 days 45%
Julian Zeissler 7/10 2549 days 45%
Lena Hanhart 7/10 2554 days 45%
Barbara 10/10 2572 days 50%
Mark and Eefie 9/10 2997 days 23%
Nigel Leighton 10/10 3000 days 22%
Laura Diepeveen 8/10 3292 days 2%
Stam 8/10 3298 days 2%
cpope 10/10 3347 days 0%
Naomi Kosteaman 9/10 3657 days 13%
Samuel Prechel 9/10 3673 days 13%
Niels Van Welsenes 10/10 3681 days 13%
salsnz 10/10 3957 days 13%
Jvjm Family 6/10 4006 days 8%
Sinjc Grude 8/10 4043 days 12%
Rachel & Barak 9/10 4044 days 13%
Jeremy & Sarah Rind 10/10 4045 days 13%
Andreas Sterki 8/10 4116 days 12%
Gina Swindells 10/10 4119 days 13%
bogaard 9/10 4234 days 13%
Amy_B 10/10 4340 days 13%
NancyB 9/10 4340 days 13%
TraceyM 8/10 4340 days 12%
DanielGermany 6/10 4345 days 8%
AndreaT 10/10 4348 days 13%
Sue Green 10/10 4352 days 13%
Greg18 7/10 4352 days 10%
DavidJ 8/10 4359 days 12%
Stolz 10/10 4376 days 13%
LindaV 7/10 4386 days 10%
Ian 10/10 4401 days 13%
HelenUK 8/10 4402 days 12%
enthusejohn 10/10 4403 days 13%
Camilla E 9/10 4408 days 13%
Zoe Summers 10/10 4564 days 13%
Benjamin Throk 9/10 4731 days 13%
Marion 10/10 4732 days 13%
Maria Fahlander 7/10 4742 days 10%
Ellie 10/10 4745 days 13%
Sanne 8/10 4745 days 12%
Claire Masling 8/10 4752 days 12%
Sally and David Wallis 9/10 4752 days 13%
Jody 9/10 4764 days 13%
Eliase 7/10 4766 days 10%
Vicki Cook 9/10 4779 days 13%
Carola Haaparinne 10/10 4780 days 13%
Wayne Best 10/10 4788 days 13%
Martin Wright 10/10 4800 days 13%
Floren 9/10 4841 days 13%
Sebastian 8/10 5070 days 12%
Tracy 10/10 5115 days 13%
Jacobien 10/10 5122 days 13%

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 55 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 -4.05%
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.