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

94.86%

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
Jonny Horn 9/10 1900 days 100%
Hazel Norman 10/10 1915 days 99%
James Jackson 10/10 1916 days 99%
Bartlomiej Berger 9/10 2611 days 59%
Ann Wilson 8/10 2867 days 42%
Anne and Steve Bartlett 9/10 2932 days 41%
Abby Rescr 9/10 3246 days 23%
Frederick Dean 8/10 3246 days 21%
Joey Mertzig 10/10 3263 days 22%
Rien 9/10 3603 days 2%
Clausen 9/10 3604 days 2%
kiwifrenchy 10/10 3611 days 2%
Sam 10/10 3615 days 1%
Pete & Pat Etheridge 10/10 3620 days 1%
Mike & Jennie 9/10 3622 days 1%
Stefes Wencke 10/10 3624 days 1%
Uwe Henze 10/10 3625 days 1%
Manuela Weber 10/10 3625 days 1%
Thyg Lingdal 10/10 3639 days 0%
caro 10/10 3671 days 29%
Dean 9/10 3686 days 29%
Anna Bret 8/10 3711 days 27%
Jaime Castells 9/10 3711 days 29%
Gary Koehler 10/10 3968 days 29%
jlgavin 6/10 3977 days 24%
Verheyen 10/10 3981 days 29%
Chris Darlington 10/10 3985 days 29%
Dieter Uhlmann 9/10 3988 days 29%
Angi Otti 10/10 3996 days 29%
Jackie Morris 10/10 3996 days 29%
Samuel Prechel 10/10 3997 days 29%
David Glover 10/10 3999 days 29%
Claus Olsen 10/10 4000 days 29%
H Schepers 9/10 4001 days 29%
georgiarose89 10/10 4036 days 29%
chrissie2011 10/10 4036 days 29%
Chris 10/10 4255 days 29%
Sabine 10/10 4255 days 29%
Kevin & Chris 9/10 4275 days 29%
davidm239 9/10 4281 days 29%
Margie 10/10 4320 days 29%
Agnes 8/10 4321 days 27%
Graeme + Jane Ryan 10/10 4332 days 29%
Westermann 10/10 4333 days 29%
Peter Brown 10/10 4338 days 29%
johnandgin 10/10 4342 days 29%
Angela 10/10 4343 days 29%
T. Timmers 9/10 4356 days 29%
Loleit 10/10 4363 days 29%
David Valentine 10/10 4364 days 29%
Annette Schmitt 9/10 4364 days 29%
Jeremy & Sarah Rind 10/10 4369 days 29%
Jessica 9/10 4375 days 29%
ChristinaO 10/10 4401 days 29%
Simon Jones 9/10 4401 days 29%
Jerry 10/10 4432 days 29%
HairyHaggis 9/10 4462 days 29%
Suzanne 10/10 4493 days 29%
Traveller Girl 10/10 4646 days 29%
Switz 10/10 4660 days 29%
DanielGermany 10/10 4668 days 29%
CornelissenS 9/10 4693 days 29%
Inger 10/10 4693 days 29%
Robert 9/10 4706 days 29%
Theresa 9/10 4712 days 29%
Sue 9/10 4715 days 29%
Inger Skov 10/10 4719 days 29%
Ruben 8/10 4749 days 27%
Claire 10/10 4762 days 29%
C Digby 9/10 4766 days 29%
Adam 10/10 4806 days 29%
Stephanie Schikora 10/10 4819 days 29%
Sue Stewart 10/10 4926 days 29%
James Gibbs 8/10 5018 days 27%
Helen 9/10 5026 days 29%
Menashe 10/10 5046 days 29%
George Jeffs 10/10 5055 days 29%
Paul Weston 9/10 5069 days 29%
Marian Mckinney 10/10 5069 days 29%
Charles Price 8/10 5080 days 27%
Vicky Elliott 10/10 5087 days 29%
Anne Mainwaring 10/10 5095 days 29%
Kilsby 10/10 5104 days 29%
Dupre 8/10 5145 days 27%
dieter 10/10 5163 days 29%
Rene Schotvanger 10/10 5278 days 29%
Pat Brewster 10/10 5278 days 29%
Paul Yacoumis 10/10 5404 days 29%
Sandra 10/10 5413 days 29%

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

-4.10% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 46 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 -4.04%
198 -4.06%
199 -4.08%
200 -4.10%
201 -4.12%
202 -4.14%
203 -4.16%

Final Ranking Score

91%

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.