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

95.48%

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 9/10 472 days 100%
Hazel Norman 10/10 487 days 96%
James Jackson 10/10 488 days 96%
Bartlomiej Berger 9/10 1183 days 6%
Ann Wilson 8/10 1439 days 5%
Anne and Steve Bartlett 9/10 1504 days 5%
Abby Rescr 9/10 1818 days 5%
Frederick Dean 8/10 1818 days 5%
Joey Mertzig 10/10 1835 days 5%
Rien 9/10 2175 days 4%
Clausen 9/10 2176 days 4%
kiwifrenchy 10/10 2183 days 3%
Sam 10/10 2187 days 4%
Pete & Pat Etheridge 10/10 2192 days 4%
Mike & Jennie 9/10 2194 days 4%
Stefes Wencke 10/10 2196 days 4%
Uwe Henze 10/10 2197 days 4%
Manuela Weber 10/10 2197 days 4%
Thyg Lingdal 10/10 2211 days 4%
caro 10/10 2243 days 3%
Dean 9/10 2258 days 4%
Anna Bret 8/10 2283 days 4%
Jaime Castells 9/10 2283 days 4%
Gary Koehler 10/10 2540 days 3%
jlgavin 6/10 2549 days 2%
Verheyen 10/10 2553 days 3%
Chris Darlington 10/10 2557 days 3%
Dieter Uhlmann 9/10 2560 days 3%
Angi Otti 10/10 2568 days 3%
Jackie Morris 10/10 2568 days 3%
Samuel Prechel 10/10 2569 days 3%
David Glover 10/10 2571 days 3%
Claus Olsen 10/10 2572 days 3%
H Schepers 9/10 2573 days 3%
georgiarose89 10/10 2608 days 2%
chrissie2011 10/10 2608 days 2%
Chris 10/10 2827 days 2%
Sabine 10/10 2827 days 2%
Kevin & Chris 9/10 2847 days 2%
davidm239 9/10 2853 days 2%
Margie 10/10 2892 days 2%
Agnes 8/10 2893 days 2%
Graeme + Jane Ryan 10/10 2904 days 2%
Westermann 10/10 2905 days 2%
Peter Brown 10/10 2910 days 2%
johnandgin 10/10 2914 days 2%
Angela 10/10 2915 days 2%
T. Timmers 9/10 2928 days 2%
Loleit 10/10 2935 days 2%
David Valentine 10/10 2936 days 2%
Annette Schmitt 9/10 2936 days 2%
Jeremy & Sarah Rind 10/10 2941 days 2%
Jessica 9/10 2947 days 2%
ChristinaO 10/10 2973 days 2%
Simon Jones 9/10 2973 days 2%
Jerry 10/10 3004 days 1%
HairyHaggis 9/10 3034 days 1%
Suzanne 10/10 3065 days 1%
Traveller Girl 10/10 3218 days 1%
Switz 10/10 3232 days 2%
DanielGermany 10/10 3240 days 2%
CornelissenS 9/10 3265 days 2%
Inger 10/10 3265 days 2%
Robert 9/10 3279 days 2%
Theresa 9/10 3284 days 2%
Sue 9/10 3287 days 2%
Inger Skov 10/10 3291 days 1%
Ruben 8/10 3321 days 1%
Claire 10/10 3334 days 1%
C Digby 9/10 3338 days 1%
Adam 10/10 3378 days 1%
Stephanie Schikora 10/10 3391 days 1%
Sue Stewart 10/10 3498 days 1%
James Gibbs 8/10 3590 days 1%
Helen 9/10 3598 days 1%
Menashe 10/10 3618 days 1%
George Jeffs 10/10 3627 days 1%
Paul Weston 9/10 3641 days 1%
Marian Mckinney 10/10 3641 days 1%
Charles Price 8/10 3652 days 1%
Vicky Elliott 10/10 3659 days 1%
Anne Mainwaring 10/10 3667 days 1%
Kilsby 10/10 3676 days 1%
Dupre 8/10 3717 days 1%
dieter 10/10 3735 days 0%
Rene Schotvanger 10/10 3850 days 0%
Pat Brewster 10/10 3850 days 0%
Paul Yacoumis 10/10 3976 days 0%
Sandra 10/10 3985 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 Doubtful Sound Overnight Cruises experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-6.04% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 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 364 days.

The Doubtful Sound Overnight Cruises experience has been adjusted for 302 days. Adjustments are according to the following table.

Days Adjustment
299 -5.98%
300 -6.00%
301 -6.02%
302 -6.04%
303 -6.06%
304 -6.08%
305 -6.10%

Final Ranking Score

89%

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.