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 Dolphin Seafaris.

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

Dolphin Seafaris

Valid Reviews

21 Valid Reviews

The Dolphin Seafaris experience has a total of 23 reviews. There are 21 valid reviews that are included when calculating the ranking score and 2 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 21 valid reviews:

Rating Count Percentage
10/10 12
57%
9/10 2
10%
8/10 3
14%
7/10 1
5%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 1
5%
2/10 0
0%
1/10 2
10%

82.86% Average

The raw data average (mean) for all the Dolphin Seafaris valid reviews is 82.86% and is based on 21 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

8 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 21 valid reviews, the experience has 8 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 8 face-to-face reviews:

Rating Count Percentage
10/10 2
25%
9/10 1
13%
8/10 3
38%
7/10 0
0%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 1
13%
2/10 0
0%
1/10 1
13%

71.25% Average

The raw data average (mean) for all the Dolphin Seafaris face-to-face reviews is 71.25% and is based on 8 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

89.09%

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
TeArani Edwards 10/10 360 days 100%
Rose Guillaume 8/10 461 days 100%
Stephanie Still 10/10 715 days 40%
Marie Lillieskold 9/10 1515 days 4%
Thibault Bonenfant 3/10 1917 days 2%
SpaceKat 10/10 2215 days 1%
Mrandersson 10/10 2215 days 1%
falofasofa 10/10 2215 days 1%
Asha 1/10 2246 days 1%
Delphin_paul 7/10 2491 days 1%
andrew_w 10/10 2521 days 1%
Nicola Shaw 10/10 2545 days 2%
Edwards 1/10 2559 days 1%
Dyson 10/10 2611 days 1%
makeuswim 10/10 2886 days 0%
Robertson 8/10 2927 days 1%
odette norris 10/10 2976 days 0%
Jim23 10/10 3007 days 0%
james 10/10 3007 days 0%
lostmysnorkel 9/10 3007 days 0%
Louise 8/10 3291 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 Dolphin Seafaris experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-6.26% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Dolphin Seafaris 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 Dolphin Seafaris experience has been adjusted for 313 days. Adjustments are according to the following table.

Days Adjustment
310 -6.20%
311 -6.22%
312 -6.24%
313 -6.26%
314 -6.28%
315 -6.30%
316 -6.32%

Final Ranking Score

83%

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.