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

94.91%

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 1629 days 100%
Hazel Norman 10/10 1644 days 99%
James Jackson 10/10 1645 days 99%
Bartlomiej Berger 9/10 2340 days 61%
Ann Wilson 8/10 2596 days 44%
Anne and Steve Bartlett 9/10 2661 days 43%
Abby Rescr 9/10 2975 days 26%
Frederick Dean 8/10 2975 days 24%
Joey Mertzig 10/10 2992 days 25%
Rien 9/10 3332 days 7%
Clausen 9/10 3333 days 6%
kiwifrenchy 10/10 3340 days 6%
Sam 10/10 3344 days 6%
Pete & Pat Etheridge 10/10 3349 days 6%
Mike & Jennie 9/10 3351 days 5%
Stefes Wencke 10/10 3353 days 5%
Uwe Henze 10/10 3354 days 5%
Manuela Weber 10/10 3354 days 5%
Thyg Lingdal 10/10 3368 days 5%
caro 10/10 3400 days 3%
Dean 9/10 3415 days 2%
Anna Bret 8/10 3440 days 0%
Jaime Castells 9/10 3440 days 1%
Gary Koehler 10/10 3697 days 17%
jlgavin 6/10 3706 days 12%
Verheyen 10/10 3710 days 17%
Chris Darlington 10/10 3714 days 17%
Dieter Uhlmann 9/10 3717 days 17%
Angi Otti 10/10 3725 days 17%
Jackie Morris 10/10 3725 days 17%
Samuel Prechel 10/10 3726 days 17%
David Glover 10/10 3728 days 17%
Claus Olsen 10/10 3729 days 17%
H Schepers 9/10 3730 days 17%
georgiarose89 10/10 3765 days 17%
chrissie2011 10/10 3765 days 17%
Chris 10/10 3984 days 17%
Sabine 10/10 3984 days 17%
Kevin & Chris 9/10 4004 days 17%
davidm239 9/10 4010 days 17%
Margie 10/10 4049 days 17%
Agnes 8/10 4050 days 16%
Graeme + Jane Ryan 10/10 4061 days 17%
Westermann 10/10 4062 days 17%
Peter Brown 10/10 4067 days 17%
johnandgin 10/10 4071 days 17%
Angela 10/10 4072 days 17%
T. Timmers 9/10 4085 days 17%
Loleit 10/10 4092 days 17%
David Valentine 10/10 4093 days 17%
Annette Schmitt 9/10 4093 days 17%
Jeremy & Sarah Rind 10/10 4098 days 17%
Jessica 9/10 4104 days 17%
ChristinaO 10/10 4130 days 17%
Simon Jones 9/10 4130 days 17%
Jerry 10/10 4161 days 17%
HairyHaggis 9/10 4191 days 17%
Suzanne 10/10 4222 days 17%
Traveller Girl 10/10 4375 days 17%
Switz 10/10 4389 days 17%
DanielGermany 10/10 4397 days 17%
CornelissenS 9/10 4422 days 17%
Inger 10/10 4422 days 17%
Robert 9/10 4435 days 17%
Theresa 9/10 4441 days 17%
Sue 9/10 4444 days 17%
Inger Skov 10/10 4448 days 17%
Ruben 8/10 4478 days 16%
Claire 10/10 4490 days 17%
C Digby 9/10 4495 days 17%
Adam 10/10 4535 days 17%
Stephanie Schikora 10/10 4548 days 17%
Sue Stewart 10/10 4655 days 17%
James Gibbs 8/10 4747 days 16%
Helen 9/10 4755 days 17%
Menashe 10/10 4775 days 17%
George Jeffs 10/10 4784 days 17%
Paul Weston 9/10 4798 days 17%
Marian Mckinney 10/10 4798 days 17%
Charles Price 8/10 4809 days 16%
Vicky Elliott 10/10 4816 days 17%
Anne Mainwaring 10/10 4824 days 17%
Kilsby 10/10 4833 days 17%
Dupre 8/10 4874 days 16%
dieter 10/10 4892 days 17%
Rene Schotvanger 10/10 5007 days 17%
Pat Brewster 10/10 5007 days 17%
Paul Yacoumis 10/10 5133 days 17%
Sandra 10/10 5142 days 17%

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

-3.29% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 71 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 -3.24%
198 -3.26%
199 -3.28%
200 -3.29%
201 -3.31%
202 -3.32%
203 -3.34%

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.