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

87.77%

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 Face-to-Face Weight Relative Weight
Remy and Rebecca Mans 6/10 1094 days true 4.15 84%
Jocelyn Booy 9/10 1119 days true 4.95 100%
David Horley 7/10 1133 days 4.48 90%
Vallee Manon 9/10 1166 days true 4.86 98%
Nanda Dyke 9/10 1192 days true 4.81 97%
victor diego 7/10 1210 days true 4.35 88%
Samuel Michalak 10/10 1215 days true 4.77 96%
Laura Munguira Vadillo 10/10 1439 days true 4.33 87%
Benedikt Hang 8/10 1446 days true 4.1 83%
Jorge Gonzoleis 8/10 1449 days true 4.09 83%
Lauren Goebel 10/10 1453 days true 4.3 87%
Rahel Baufeld 8/10 1461 days true 4.07 82%
Peter Hodgson 10/10 1487 days true 4.23 85%
doug fiddes 10/10 1512 days 4.18 84%
Dan Wilson 7/10 1529 days true 3.78 76%
Corrie Medinea 8/10 1537 days true 3.93 79%
Gracen Verheryden 10/10 1540 days true 4.13 83%
Jennifer Hoyles 10/10 1544 days 4.12 83%
Lenka Korinkova 7/10 1806 days true 3.28 66%
Rebecca Wharton 9/10 1834 days true 3.55 72%
Andy Jobst 8/10 1909 days true 3.24 65%
Rawiri johnston 10/10 2092 days 3.05 62%
Marek Heiurich 7/10 2162 days true 2.65 53%
Matt Weston 10/10 2167 days true 2.9 59%
Henrik Bours 8/10 2168 days true 2.76 56%
Svenja Trubenbach 9/10 2168 days true 2.9 59%
Sheila Galpin 9/10 2182 days true 2.87 58%
Guillaume 9/10 2193 days true 2.85 58%
Andreas Jung 9/10 2208 days true 2.82 57%
Inga Memmen 10/10 2210 days true 2.82 57%
Alacchi Moustier 10/10 2225 days true 2.79 56%
Guy David 9/10 2233 days true 2.77 56%
Michael Rohn 8/10 2240 days true 2.62 53%
Rainer 9/10 2524 days true 2.2 44%
Clarissa Hanck 9/10 2524 days true 2.2 44%
Michael Heuer 9/10 2526 days true 2.2 44%
Oram Salem 6/10 2526 days true 1.83 37%
Lea Roser 9/10 2535 days true 2.18 44%
Jitka Krejcova 10/10 2535 days true 2.18 44%
Michal Sturma 9/10 2535 days true 2.18 44%
Stientje van den Heuvel 8/10 2535 days true 2.07 42%
Tom Somers 9/10 2535 days true 2.18 44%
Brandon Wells 8/10 2536 days true 2.07 42%
Tim Vennewold 9/10 2536 days true 2.18 44%
Katharina 8/10 2536 days true 2.07 42%
Lorna and Seb 9/10 2552 days true 2.15 43%
Kristin Denny 8/10 2559 days true 2.03 41%
Wendy Ward 10/10 2565 days true 2.12 43%
Michal Maly 9/10 2575 days true 2.1 42%
Michael Nolan 10/10 2577 days 2.1 42%
Hanneke P 7/10 2608 days 1.86 37%
Katharina Pape 8/10 2637 days true 1.88 38%
Camille 7/10 2644 days true 1.79 36%
Petr Stepanek 10/10 2906 days true 1.46 29%
Larry Curtiss 10/10 2911 days true 1.45 29%
nztintin 10/10 2914 days 1.44 29%
Marion Hassink 7/10 2920 days true 1.3 26%
Stam 6/10 2925 days true 1.18 24%
Ed & Katie Riches 8/10 2926 days true 1.35 27%
Seth & Carla 10/10 2928 days true 1.41 29%
Peter Putz 10/10 2928 days true 1.41 29%
Tadej Ferjan 10/10 2928 days true 1.41 29%
Nico Welagen 10/10 2929 days true 1.41 28%
Alan Findlay 9/10 2929 days true 1.41 28%
Andreas Kristiansen 10/10 2937 days true 1.4 28%
Arnoldus Bergmans 10/10 3009 days true 1.25 25%
Kai 10/10 3011 days true 1.25 25%
Christoph 9/10 3014 days true 1.24 25%
Jory Singer 8/10 3020 days true 1.17 24%
Scott & Madeleine Bancroft 9/10 3025 days true 1.22 25%
Kimberly St Louis 10/10 3219 days 0.84 17%
Lisa Milton 10/10 3242 days true 0.8 16%
Rob O'Neill 10/10 3251 days true 0.78 16%
Laura Thrower 10/10 3254 days true 0.77 16%
Ofir Avimeir 8/10 3258 days true 0.73 15%
Zachary Steinberg 9/10 3259 days true 0.77 15%
Brian Jones 9/10 3259 days true 0.77 15%
Sarah and Uli Glas 9/10 3260 days true 0.76 15%
Boi Sagarra 8/10 3263 days true 0.72 15%
John Tinus 8/10 3264 days true 0.72 14%
Stefanie 8/10 3265 days true 0.72 14%
Alex 8/10 3267 days true 0.71 14%
Fredrik Thornell 8/10 3270 days true 0.71 14%
Siggi Wick 9/10 3271 days true 0.74 15%
Bruce & Elaine Chote 10/10 3272 days true 0.74 15%
Estel la Prado 9/10 3274 days true 0.74 15%
Jeff and Carey Brown 10/10 3279 days true 0.73 15%
LandJ 7/10 3280 days 0.66 13%
Katie Mitchell 9/10 3280 days 0.72 15%
Galamez 9/10 3287 days true 0.71 14%
Mr & Mrs Mackie 9/10 3290 days true 0.7 14%
Thomas Reidinger 6/10 3294 days true 0.58 12%
G Elliason 9/10 3294 days true 0.7 14%
Van den Borne 9/10 3294 days true 0.7 14%
Laura Hayes 10/10 3295 days true 0.69 14%
Brian Lind 7/10 3295 days true 0.63 13%
Chloe Finster 10/10 3295 days true 0.69 14%
Jol Balder 8/10 3296 days true 0.66 13%
Robert Haidt 10/10 3301 days true 0.68 14%
VisualDelight 10/10 3523 days 0.25 5%
lindam 10/10 3614 days true 0.07 1%
Martina Pankova 9/10 3620 days true 0.06 1%
Neal 10/10 3658 days true 0.0 0%
Bouwma 8/10 3666 days true 0.0 0%
Mattias Thorm 9/10 3667 days true 0.0 0%
Erik Hummelmose 8/10 3669 days true 0.0 0%
Ian E 10/10 3669 days true 0.0 0%
Kane Chain 9/10 3690 days true 0.0 0%
johnma 10/10 3724 days true 0.0 0%
ingeh 8/10 3728 days true 0.0 0%
Jerry 8/10 3735 days 0.0 0%
Decuq 10/10 3746 days true 0.0 0%
Carl and Angela Rapihana 8/10 3758 days true 0.0 0%
Graham Butt 10/10 3758 days true 0.0 0%
tessac 9/10 3860 days true 0.0 0%
andriesk 9/10 3861 days true 0.0 0%
nickm 10/10 3934 days true 0.0 0%
Sofie 10/10 3949 days 0.0 0%
streneer 10/10 3966 days true 0.0 0%
ElleGermany 9/10 3967 days true 0.0 0%
JonK 9/10 3967 days true 0.0 0%
NicolaW 10/10 3971 days true 0.0 0%
DirkGermany 10/10 3974 days true 0.0 0%
Bridget 10/10 3983 days true 0.0 0%
Roy 9/10 3983 days true 0.0 0%
HenizV 9/10 3988 days true 0.0 0%
CraigB 10/10 3991 days true 0.0 0%
familytravellers 7/10 3991 days true 0.0 0%
Rissmann 10/10 3995 days true 0.0 0%
Sara Hansson 10/10 3996 days true 0.0 0%
Frank 9/10 3996 days true 0.0 0%
KurtL 8/10 3997 days true 0.0 0%
SteveW 8/10 3998 days true 0.0 0%
Peter Bowen-Simpkins 9/10 3999 days true 0.0 0%
Joel 9/10 3999 days true 0.0 0%
Suzie Lechner 10/10 3999 days true 0.0 0%
KathrinS 9/10 3999 days true 0.0 0%
Debbie 7/10 4002 days true 0.0 0%
Stolz 9/10 4002 days true 0.0 0%
Ulli 9/10 4003 days true 0.0 0%
Tatjane 8/10 4010 days true 0.0 0%
Claudia 8/10 4011 days true 0.0 0%
SimonR 8/10 4013 days true 0.0 0%
SonjaG 9/10 4013 days true 0.0 0%
Steve 7/10 4013 days true 0.0 0%
AdelineC 8/10 4014 days true 0.0 0%
RobC1 7/10 4014 days true 0.0 0%
RichardB1 6/10 4014 days true 0.0 0%
JoT 7/10 4014 days true 0.0 0%
Olly 10/10 4015 days true 0.0 0%
Klaus 9/10 4015 days true 0.0 0%
JanetH 8/10 4027 days true 0.0 0%
StefanieW 8/10 4029 days true 0.0 0%
schenk 8/10 4029 days true 0.0 0%
groenewold 7/10 4043 days true 0.0 0%
Jessy 5/10 4043 days true 0.0 0%
Wilco 7/10 4051 days true 0.0 0%
Bernd 8/10 4052 days true 0.0 0%
Ruben 8/10 4052 days true 0.0 0%
Paul 10/10 4055 days true 0.0 0%
Loren 10/10 4083 days true 0.0 0%
DavidO 8/10 4086 days true 0.0 0%
Peter 9/10 4091 days true 0.0 0%
David 10/10 4092 days true 0.0 0%
Kylie 8/10 4096 days true 0.0 0%
Ursula 9/10 4109 days true 0.0 0%
Carrie 8/10 4125 days true 0.0 0%
David 10/10 4156 days true 0.0 0%
Howard 9/10 4174 days true 0.0 0%
Chris 8/10 4356 days true 0.0 0%
Anthony 8/10 4359 days true 0.0 0%
Sandra Verbaarschot 10/10 4359 days true 0.0 0%
Omer Harron 10/10 4359 days true 0.0 0%
angela 9/10 4362 days true 0.0 0%
Kerstin Brantryd 5/10 4366 days true 0.0 0%
Sanne 10/10 4372 days true 0.0 0%
Tessa McCormick 9/10 4376 days true 0.0 0%
Sally and David Wallis 10/10 4379 days true 0.0 0%
Martens 8/10 4380 days true 0.0 0%
Dan Adamson 9/10 4398 days true 0.0 0%
Ben 7/10 4464 days true 0.0 0%
Kirsty Ranger 9/10 4539 days true 0.0 0%
Andy Chapman 8/10 4581 days true 0.0 0%
ranker_34 5/10 4581 days true 0.0 0%
Jo 9/10 4581 days true 0.0 0%
Matous 10/10 4700 days true 0.0 0%
Stefan&Gerte 7/10 4703 days true 0.0 0%
Jenny 9/10 4703 days true 0.0 0%
Paul Yacoumis 8/10 4707 days true 0.0 0%
Deloraine 7/10 4716 days true 0.0 0%
Denise Nick 9/10 4718 days true 0.0 0%
Daniel 10/10 4723 days true 0.0 0%
Martin Smith 8/10 4726 days true 0.0 0%
Susan 8/10 4729 days true 0.0 0%
sebastian 10/10 4730 days true 0.0 0%
ranker_110 9/10 4737 days true 0.0 0%
Stefan 8/10 4739 days true 0.0 0%
Svenja 7/10 4744 days true 0.0 0%
Hirsh 10/10 4749 days true 0.0 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 Southern Discoveries experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.98% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 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 199 days.

The Southern Discoveries experience has been adjusted for 199 days. Adjustments are according to the following table.

Days Adjustment
196 -3.92%
197 -3.94%
198 -3.96%
199 -3.98%
200 -4.00%
201 -4.02%
202 -4.04%

Final Ranking Score

84%

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.