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 Southern Discoveries.

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

Southern Discoveries

Valid Reviews

199 Valid Reviews

The Southern Discoveries experience has a total of 199 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 199 valid reviews:

Rating Count Percentage
10/10 63
32%
9/10 59
30%
8/10 48
24%
7/10 21
11%
6/10 5
3%
5/10 3
2%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

87.29% Average

The raw data average (mean) for all the Southern Discoveries valid reviews is 87.29% and is based on 199 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

186 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 199 valid reviews, the experience has 186 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 186 face-to-face reviews:

Rating Count Percentage
10/10 55
30%
9/10 58
31%
8/10 47
25%
7/10 18
10%
6/10 5
3%
5/10 3
2%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

87.04% Average

The raw data average (mean) for all the Southern Discoveries face-to-face reviews is 87.04% and is based on 186 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

87.31%

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
Remy and Rebecca Mans 6/10 1434 days 84%
Jocelyn Booy 9/10 1459 days 100%
David Horley 7/10 1473 days 90%
Vallee Manon 9/10 1506 days 98%
Nanda Dyke 9/10 1532 days 97%
victor diego 7/10 1550 days 87%
Samuel Michalak 10/10 1555 days 96%
Laura Munguira Vadillo 10/10 1779 days 85%
Benedikt Hang 8/10 1786 days 81%
Jorge Gonzoleis 8/10 1789 days 81%
Lauren Goebel 10/10 1793 days 85%
Rahel Baufeld 8/10 1801 days 80%
Peter Hodgson 10/10 1827 days 83%
doug fiddes 10/10 1853 days 82%
Dan Wilson 7/10 1869 days 74%
Corrie Medinea 8/10 1877 days 77%
Gracen Verheryden 10/10 1880 days 81%
Jennifer Hoyles 10/10 1884 days 81%
Lenka Korinkova 7/10 2146 days 62%
Rebecca Wharton 9/10 2174 days 67%
Andy Jobst 8/10 2249 days 61%
Rawiri johnston 10/10 2432 days 55%
Marek Heiurich 7/10 2502 days 47%
Matt Weston 10/10 2507 days 52%
Henrik Bours 8/10 2508 days 49%
Svenja Trubenbach 9/10 2508 days 52%
Sheila Galpin 9/10 2522 days 51%
Guillaume 9/10 2533 days 51%
Andreas Jung 9/10 2548 days 50%
Inga Memmen 10/10 2550 days 50%
Alacchi Moustier 10/10 2565 days 49%
Guy David 9/10 2573 days 49%
Michael Rohn 8/10 2580 days 46%
Rainer 9/10 2864 days 36%
Clarissa Hanck 9/10 2864 days 36%
Michael Heuer 9/10 2866 days 36%
Oram Salem 6/10 2866 days 29%
Lea Roser 9/10 2875 days 35%
Jitka Krejcova 10/10 2875 days 35%
Michal Sturma 9/10 2875 days 35%
Stientje van den Heuvel 8/10 2875 days 33%
Tom Somers 9/10 2875 days 35%
Brandon Wells 8/10 2876 days 33%
Tim Vennewold 9/10 2876 days 35%
Katharina 8/10 2876 days 33%
Lorna and Seb 9/10 2892 days 34%
Kristin Denny 8/10 2899 days 32%
Wendy Ward 10/10 2905 days 34%
Michal Maly 9/10 2915 days 33%
Michael Nolan 10/10 2917 days 33%
Hanneke P 7/10 2948 days 29%
Katharina Pape 8/10 2977 days 29%
Camille 7/10 2984 days 27%
Petr Stepanek 10/10 3246 days 18%
Larry Curtiss 10/10 3251 days 18%
nztintin 10/10 3254 days 18%
Marion Hassink 7/10 3260 days 16%
Stam 6/10 3265 days 14%
Ed & Katie Riches 8/10 3266 days 16%
Seth & Carla 10/10 3268 days 17%
Peter Putz 10/10 3268 days 17%
Tadej Ferjan 10/10 3268 days 17%
Nico Welagen 10/10 3269 days 17%
Alan Findlay 9/10 3269 days 17%
Andreas Kristiansen 10/10 3277 days 17%
Arnoldus Bergmans 10/10 3349 days 13%
Kai 10/10 3351 days 13%
Christoph 9/10 3354 days 13%
Jory Singer 8/10 3360 days 12%
Scott & Madeleine Bancroft 9/10 3365 days 13%
Kimberly St Louis 10/10 3559 days 4%
Lisa Milton 10/10 3582 days 3%
Rob O'Neill 10/10 3591 days 2%
Laura Thrower 10/10 3594 days 2%
Ofir Avimeir 8/10 3598 days 2%
Zachary Steinberg 9/10 3599 days 2%
Brian Jones 9/10 3599 days 2%
Sarah and Uli Glas 9/10 3600 days 2%
Boi Sagarra 8/10 3603 days 2%
John Tinus 8/10 3604 days 2%
Stefanie 8/10 3605 days 2%
Alex 8/10 3607 days 1%
Fredrik Thornell 8/10 3610 days 1%
Siggi Wick 9/10 3611 days 1%
Bruce & Elaine Chote 10/10 3612 days 1%
Estel la Prado 9/10 3614 days 1%
Jeff and Carey Brown 10/10 3619 days 1%
LandJ 7/10 3620 days 1%
Katie Mitchell 9/10 3620 days 1%
Galamez 9/10 3627 days 1%
Mr & Mrs Mackie 9/10 3630 days 1%
Thomas Reidinger 6/10 3634 days 0%
G Elliason 9/10 3634 days 0%
Van den Borne 9/10 3634 days 0%
Laura Hayes 10/10 3635 days 0%
Brian Lind 7/10 3635 days 0%
Chloe Finster 10/10 3635 days 0%
Jol Balder 8/10 3636 days 0%
Robert Haidt 10/10 3641 days 0%
VisualDelight 10/10 3863 days 23%
lindam 10/10 3954 days 23%
Martina Pankova 9/10 3960 days 23%
Neal 10/10 3998 days 23%
Bouwma 8/10 4006 days 22%
Mattias Thorm 9/10 4007 days 23%
Erik Hummelmose 8/10 4009 days 22%
Ian E 10/10 4009 days 23%
Kane Chain 9/10 4030 days 23%
johnma 10/10 4064 days 23%
ingeh 8/10 4068 days 22%
Jerry 8/10 4075 days 22%
Decuq 10/10 4086 days 23%
Carl and Angela Rapihana 8/10 4098 days 22%
Graham Butt 10/10 4098 days 23%
tessac 9/10 4200 days 23%
andriesk 9/10 4201 days 23%
nickm 10/10 4274 days 23%
Sofie 10/10 4289 days 23%
streneer 10/10 4306 days 23%
ElleGermany 9/10 4307 days 23%
JonK 9/10 4307 days 23%
NicolaW 10/10 4311 days 23%
DirkGermany 10/10 4314 days 23%
Bridget 10/10 4324 days 23%
Roy 9/10 4324 days 23%
HenizV 9/10 4329 days 23%
CraigB 10/10 4331 days 23%
familytravellers 7/10 4331 days 21%
Rissmann 10/10 4335 days 23%
Sara Hansson 10/10 4336 days 23%
Frank 9/10 4337 days 23%
KurtL 8/10 4337 days 22%
SteveW 8/10 4338 days 22%
Peter Bowen-Simpkins 9/10 4339 days 23%
Joel 9/10 4339 days 23%
Suzie Lechner 10/10 4339 days 23%
KathrinS 9/10 4339 days 23%
Debbie 7/10 4343 days 21%
Stolz 9/10 4343 days 23%
Ulli 9/10 4343 days 23%
Tatjane 8/10 4351 days 22%
Claudia 8/10 4352 days 22%
SimonR 8/10 4353 days 22%
SonjaG 9/10 4353 days 23%
Steve 7/10 4353 days 21%
AdelineC 8/10 4354 days 22%
RobC1 7/10 4354 days 21%
RichardB1 6/10 4354 days 19%
JoT 7/10 4354 days 21%
Olly 10/10 4355 days 23%
Klaus 9/10 4356 days 23%
JanetH 8/10 4367 days 22%
StefanieW 8/10 4369 days 22%
schenk 8/10 4370 days 22%
groenewold 7/10 4384 days 21%
Jessy 5/10 4384 days 19%
Wilco 7/10 4391 days 21%
Bernd 8/10 4392 days 22%
Ruben 8/10 4393 days 22%
Paul 10/10 4396 days 23%
Loren 10/10 4424 days 23%
DavidO 8/10 4426 days 22%
Peter 9/10 4432 days 23%
David 10/10 4433 days 23%
Kylie 8/10 4436 days 22%
Ursula 9/10 4450 days 23%
Carrie 8/10 4466 days 22%
David 10/10 4497 days 23%
Howard 9/10 4515 days 23%
Chris 8/10 4696 days 22%
Anthony 8/10 4699 days 22%
Sandra Verbaarschot 10/10 4699 days 23%
Omer Harron 10/10 4699 days 23%
angela 9/10 4702 days 23%
Kerstin Brantryd 5/10 4706 days 19%
Sanne 10/10 4712 days 23%
Tessa McCormick 9/10 4716 days 23%
Sally and David Wallis 10/10 4719 days 23%
Martens 8/10 4720 days 22%
Dan Adamson 9/10 4738 days 23%
Ben 7/10 4804 days 21%
Kirsty Ranger 9/10 4879 days 23%
Andy Chapman 8/10 4921 days 22%
ranker_34 5/10 4921 days 19%
Jo 9/10 4921 days 23%
Matous 10/10 5040 days 23%
Stefan&Gerte 7/10 5043 days 21%
Jenny 9/10 5043 days 23%
Paul Yacoumis 8/10 5047 days 22%
Deloraine 7/10 5056 days 21%
Denise Nick 9/10 5058 days 23%
Daniel 10/10 5063 days 23%
Martin Smith 8/10 5066 days 22%
Susan 8/10 5069 days 22%
sebastian 10/10 5070 days 23%
ranker_110 9/10 5077 days 23%
Stefan 8/10 5079 days 22%
Svenja 7/10 5084 days 21%
Hirsh 10/10 5089 days 23%

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 Southern Discoveries experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.13% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 48 days. However the Southern Discoveries 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 Southern Discoveries experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.07%
198 -4.09%
199 -4.11%
200 -4.13%
201 -4.15%
202 -4.17%
203 -4.19%

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.