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 Doubtful Sound Overnight Cruises.

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

Doubtful Sound Overnight Cruises

Valid Reviews

89 Valid Reviews

The Doubtful Sound Overnight Cruises experience has a total of 89 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 89 valid reviews:

Rating Count Percentage
10/10 55
62%
9/10 25
28%
8/10 8
9%
7/10 0
0%
6/10 1
1%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

94.94% Average

The raw data average (mean) for all the Doubtful Sound Overnight Cruises valid reviews is 94.94% and is based on 89 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

74 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 89 valid reviews, the experience has 74 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 74 face-to-face reviews:

Rating Count Percentage
10/10 44
59%
9/10 22
30%
8/10 8
11%
7/10 0
0%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

94.86% Average

The raw data average (mean) for all the Doubtful Sound Overnight Cruises face-to-face reviews is 94.86% and is based on 74 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

95.01%

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
Jonny Horn 9/10 1776 days 100%
Hazel Norman 10/10 1791 days 99%
James Jackson 10/10 1792 days 99%
Bartlomiej Berger 9/10 2487 days 61%
Ann Wilson 8/10 2743 days 44%
Anne and Steve Bartlett 9/10 2808 days 43%
Abby Rescr 9/10 3122 days 26%
Frederick Dean 8/10 3122 days 24%
Joey Mertzig 10/10 3139 days 25%
Rien 9/10 3479 days 6%
Clausen 9/10 3480 days 6%
kiwifrenchy 10/10 3487 days 6%
Sam 10/10 3491 days 5%
Pete & Pat Etheridge 10/10 3496 days 5%
Mike & Jennie 9/10 3498 days 5%
Stefes Wencke 10/10 3500 days 5%
Uwe Henze 10/10 3501 days 5%
Manuela Weber 10/10 3501 days 5%
Thyg Lingdal 10/10 3515 days 4%
caro 10/10 3547 days 2%
Dean 9/10 3562 days 2%
Anna Bret 8/10 3587 days 0%
Jaime Castells 9/10 3587 days 0%
Gary Koehler 10/10 3844 days 25%
jlgavin 6/10 3853 days 20%
Verheyen 10/10 3857 days 25%
Chris Darlington 10/10 3861 days 25%
Dieter Uhlmann 9/10 3864 days 25%
Angi Otti 10/10 3872 days 25%
Jackie Morris 10/10 3872 days 25%
Samuel Prechel 10/10 3873 days 25%
David Glover 10/10 3875 days 25%
Claus Olsen 10/10 3876 days 25%
H Schepers 9/10 3877 days 25%
georgiarose89 10/10 3912 days 25%
chrissie2011 10/10 3912 days 25%
Chris 10/10 4131 days 25%
Sabine 10/10 4131 days 25%
Kevin & Chris 9/10 4151 days 25%
davidm239 9/10 4157 days 25%
Margie 10/10 4196 days 25%
Agnes 8/10 4197 days 23%
Graeme + Jane Ryan 10/10 4208 days 25%
Westermann 10/10 4209 days 25%
Peter Brown 10/10 4214 days 25%
johnandgin 10/10 4218 days 25%
Angela 10/10 4219 days 25%
T. Timmers 9/10 4232 days 25%
Loleit 10/10 4239 days 25%
David Valentine 10/10 4240 days 25%
Annette Schmitt 9/10 4240 days 25%
Jeremy & Sarah Rind 10/10 4245 days 25%
Jessica 9/10 4251 days 25%
ChristinaO 10/10 4277 days 25%
Simon Jones 9/10 4277 days 25%
Jerry 10/10 4308 days 25%
HairyHaggis 9/10 4338 days 25%
Suzanne 10/10 4369 days 25%
Traveller Girl 10/10 4522 days 25%
Switz 10/10 4536 days 25%
DanielGermany 10/10 4544 days 25%
CornelissenS 9/10 4569 days 25%
Inger 10/10 4569 days 25%
Robert 9/10 4582 days 25%
Theresa 9/10 4588 days 25%
Sue 9/10 4591 days 25%
Inger Skov 10/10 4595 days 25%
Ruben 8/10 4625 days 23%
Claire 10/10 4638 days 25%
C Digby 9/10 4642 days 25%
Adam 10/10 4682 days 25%
Stephanie Schikora 10/10 4695 days 25%
Sue Stewart 10/10 4802 days 25%
James Gibbs 8/10 4894 days 23%
Helen 9/10 4902 days 25%
Menashe 10/10 4922 days 25%
George Jeffs 10/10 4931 days 25%
Paul Weston 9/10 4945 days 25%
Marian Mckinney 10/10 4945 days 25%
Charles Price 8/10 4956 days 23%
Vicky Elliott 10/10 4963 days 25%
Anne Mainwaring 10/10 4971 days 25%
Kilsby 10/10 4980 days 25%
Dupre 8/10 5021 days 23%
dieter 10/10 5039 days 25%
Rene Schotvanger 10/10 5154 days 25%
Pat Brewster 10/10 5154 days 25%
Paul Yacoumis 10/10 5280 days 25%
Sandra 10/10 5289 days 25%

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 Doubtful Sound Overnight Cruises experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-2.96% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 77 days. However the Doubtful Sound Overnight Cruises 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 Doubtful Sound Overnight Cruises experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -2.92%
198 -2.93%
199 -2.95%
200 -2.96%
201 -2.98%
202 -2.99%
203 -3.01%

Final Ranking Score

92%

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.