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 Dolphin Encounter Kaikoura.

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

Dolphin Encounter Kaikoura

Valid Reviews

255 Valid Reviews

The Dolphin Encounter Kaikoura experience has a total of 257 reviews. There are 255 valid reviews that are included when calculating the ranking score and 2 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 255 valid reviews:

Rating Count Percentage
10/10 135
53%
9/10 74
29%
8/10 32
13%
7/10 13
5%
6/10 1
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

92.90% Average

The raw data average (mean) for all the Dolphin Encounter Kaikoura valid reviews is 92.90% and is based on 255 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

210 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 255 valid reviews, the experience has 210 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 210 face-to-face reviews:

Rating Count Percentage
10/10 104
50%
9/10 66
31%
8/10 30
14%
7/10 10
5%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

92.57% Average

The raw data average (mean) for all the Dolphin Encounter Kaikoura face-to-face reviews is 92.57% and is based on 210 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

92.52%

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
Derek Green 8/10 111 days 98.05 87%
Michael Holm 9/10 199 days true 112.47 100%
Stefan Zink 10/10 451 days true 81.32 72%
Fentrup 9/10 457 days true 80.29 71%
Katharina Koch 10/10 461 days true 79.59 70%
Aurelie and Ben Marie 9/10 463 days true 79.24 70%
Sebastian Braun 9/10 551 days true 62.27 55%
Joanne Woo 10/10 568 days 49.01 43%
Chris 6/10 599 days 43.98 39%
Olivier Reculeau 10/10 785 days true 24.27 21%
Susanne Breudel 10/10 790 days true 23.69 20%
Josh Legge 10/10 798 days true 22.77 20%
Daniel Weber 9/10 800 days true 22.55 19%
Virginia Fradin 10/10 804 days true 22.1 19%
Olivier Anciaux 9/10 807 days true 21.77 19%
Wendy van Boom 10/10 807 days true 21.77 19%
Bas Hoogteijling 10/10 810 days true 21.45 18%
Mira Huckfield 10/10 820 days true 20.38 17%
Maike Santelmann 10/10 832 days true 19.15 16%
Levin Stuers 10/10 837 days true 18.66 16%
magdalena gomez haedo 9/10 840 days 15.3 13%
Lucca Weisbender 10/10 842 days 15.14 13%
Anna Scholten 10/10 843 days true 18.08 15%
Nils Kissel 10/10 853 days 14.28 12%
Madita and Lisann 10/10 889 days true 14.07 12%
sanneke tangel 10/10 895 days true 13.61 11%
Georgia Coleman 10/10 895 days true 13.61 11%
Virgil Spruit 8/10 899 days true 13.31 11%
Xue Rong Kok 7/10 904 days 10.78 9%
Anthony Jacobs 10/10 1026 days 5.75 4%
Sofie Jebsen 10/10 1169 days true 5.88 4%
Tobias 10/10 1169 days true 5.88 4%
Annika Funk 10/10 1205 days true 5.82 4%
Dawn Mulligan 10/10 1221 days true 5.79 4%
Christophe Scieszka 10/10 1238 days 4.8 3%
Hubert 8/10 1278 days true 5.7 4%
Ondrej Stepanek 8/10 1514 days true 5.31 4%
Boneschova Jarka 10/10 1514 days true 5.31 4%
Heike Heller 10/10 1523 days true 5.3 4%
Andreas Mouteiro 9/10 1523 days true 5.3 4%
Josefin Lind 10/10 1524 days true 5.29 4%
Herman Holmgist 10/10 1524 days true 5.29 4%
Felicitas 9/10 1546 days true 5.26 4%
Antoine 8/10 1554 days true 5.25 4%
Mara K 10/10 1573 days 4.35 3%
Emilie Chanbon 10/10 1576 days true 5.21 4%
Alexis Redor 10/10 1576 days true 5.21 4%
Julia Amberger 8/10 1595 days true 5.18 4%
Annalina Drebald 8/10 1595 days true 5.18 4%
balesdent 9/10 1601 days true 5.17 4%
Alineet Gautier 10/10 1604 days true 5.16 4%
Annika Schmidt 10/10 1884 days true 4.7 3%
Patrick Stoeit 10/10 1884 days true 4.7 3%
Audrey Ripoche 9/10 1886 days true 4.7 3%
Rey Germain 9/10 1886 days true 4.7 3%
Christofer Tonn 10/10 1896 days true 4.68 3%
Ann Furlong 10/10 1904 days true 4.67 3%
Trudy Ryan 8/10 1904 days true 4.67 3%
Jill Fischer 10/10 1910 days 3.88 3%
Kim 10/10 1910 days 3.88 3%
Francois Marchar 9/10 1920 days true 4.64 3%
Jan Zimmerman 10/10 1925 days true 4.64 3%
Elvin Teo 10/10 1938 days 3.85 3%
Rob 9/10 1986 days true 4.54 3%
Andreas Garbin 10/10 1988 days true 4.53 3%
Joanna 9/10 2006 days true 4.5 3%
Mellow 10/10 2030 days 3.72 2%
whalelover88 10/10 2183 days 3.51 2%
Jos Schieveen 8/10 2254 days true 4.09 3%
Goran Backlund 9/10 2260 days true 4.08 3%
Nathan Sait 10/10 2267 days true 4.07 3%
Toby Clark 10/10 2267 days true 4.07 3%
Maxine Gilman 10/10 2270 days true 4.07 3%
Harald 9/10 2284 days true 4.05 3%
Dominik Langenegger 9/10 2286 days true 4.04 3%
Rebecca Richardson 9/10 2286 days true 4.04 3%
Andrew Powell 9/10 2286 days true 4.04 3%
Peter Field 10/10 2286 days true 4.04 3%
Eric Lombaard 8/10 2287 days true 4.04 3%
Nicholas Prakenhammar 10/10 2288 days true 4.04 3%
Peter Wall 7/10 2288 days true 4.04 3%
Verne Heath 8/10 2289 days true 4.04 3%
John O'Donnell 10/10 2290 days true 4.04 3%
Paul Fairbrass 10/10 2297 days true 4.02 3%
Frank Krivauek 10/10 2298 days true 4.02 3%
Rocco Christian 7/10 2298 days true 4.02 3%
Kurt & Noemi Buhler 7/10 2299 days true 4.02 3%
Therese 7/10 2302 days true 4.02 3%
Katie K 9/10 2313 days true 4.0 3%
CMJ 10/10 2335 days 3.3 2%
Jacqueline 10/10 2366 days 3.26 2%
Marc & Pauline 9/10 2372 days true 3.9 3%
Kevin & Chris 9/10 2373 days true 3.9 3%
Robin & Sandra Dijke 9/10 2375 days true 3.9 3%
Laura McCusker 8/10 2382 days true 3.88 3%
Dexter 10/10 2580 days 2.97 2%
Jasmin Loeffler 10/10 2586 days true 3.55 2%
Natascha Rachel 10/10 2586 days true 3.55 2%
Res Kormann 10/10 2599 days true 3.53 2%
Sarah James 10/10 2609 days true 3.51 2%
Nick Taylor 10/10 2609 days true 3.51 2%
Nicola Young 10/10 2609 days true 3.51 2%
Stefan Elsenbruch 9/10 2614 days true 3.5 2%
Stefanie 7/10 2624 days true 3.49 2%
Koen Vanlede 10/10 2627 days true 3.48 2%
Van Vliet 8/10 2628 days true 3.48 2%
Vanessa Vogel 10/10 2631 days true 3.48 2%
Marcel Camsch 9/10 2633 days true 3.47 2%
Keely & Mark Haynes 10/10 2634 days true 3.47 2%
Svea Sauter 10/10 2634 days true 3.47 2%
henriket 10/10 2635 days true 3.47 2%
Amanda Wells 10/10 2635 days true 3.47 2%
K & J Overton 9/10 2635 days true 3.47 2%
Jerry & Floon 9/10 2639 days true 3.46 2%
Bartl 10/10 2639 days true 3.46 2%
travellingfamilyof6 10/10 2641 days 2.88 2%
WeddingMaven 10/10 2641 days 2.88 2%
Lieve Verdonck 8/10 2642 days true 3.46 2%
Victoria Purver 8/10 2644 days true 3.45 2%
Thelia Beament 9/10 2644 days true 3.45 2%
Edwards 9/10 2648 days true 3.45 2%
Mark Irwin 9/10 2652 days true 3.44 2%
Agnes McMillan 10/10 2653 days true 3.44 2%
Leslie 9/10 2653 days true 3.44 2%
Selina Mueller 10/10 2655 days true 3.44 2%
Jill Dean 10/10 2656 days true 3.43 2%
Chloe Finster 10/10 2656 days true 3.43 2%
Vanderhorst 9/10 2657 days true 3.43 2%
Judith K. 10/10 2659 days true 3.43 2%
Amanda Wallace 9/10 2659 days true 3.43 2%
Mark Aarts 10/10 2660 days true 3.43 2%
Forestal Youri 9/10 2661 days true 3.43 2%
Dave and Lin Mungham 10/10 2662 days true 3.42 2%
Jane Hancock 10/10 2664 days true 3.42 2%
Stephi 10/10 2669 days 2.84 2%
Amanda 10/10 2669 days 2.84 2%
Mick Doherty 9/10 2700 days 2.8 2%
hendrik king 7/10 2700 days 2.8 2%
Shoe 10/10 2731 days 2.76 2%
marcvergroesen 9/10 2945 days 2.47 1%
Jenny Leyland 9/10 2945 days 2.47 1%
MarcyMark 10/10 2975 days 2.42 1%
katrina Marshall 10/10 2992 days true 2.88 2%
Von 9/10 3006 days 2.38 1%
Judith 8/10 3012 days true 2.85 2%
Doris Resch 10/10 3012 days true 2.85 2%
Sheila Morgan 10/10 3015 days true 2.84 2%
Maria Newton 9/10 3016 days true 2.84 2%
Faller 10/10 3029 days true 2.82 2%
Wim Van Gastel 8/10 3032 days true 2.82 2%
Laura Walters 9/10 3033 days true 2.81 2%
Chance McGuire 10/10 3034 days 2.34 1%
cees juffermans 9/10 3047 days true 2.79 2%
Markus 10/10 3050 days true 2.79 2%
Grainne Ahern 10/10 3065 days 2.3 1%
sutuckey 10/10 3065 days 2.3 1%
Honeymooners 10/10 3065 days 2.3 1%
sophiep 9/10 3080 days true 2.74 2%
chuckchallenger 10/10 3096 days 2.26 1%
mdarras 9/10 3100 days true 2.7 2%
joramv 9/10 3100 days true 2.7 2%
Michelle Kraemer 10/10 3103 days true 2.7 2%
Kimberly Skyes 10/10 3103 days true 2.7 2%
Ruth Colmer 9/10 3106 days true 2.69 2%
maleta 8/10 3117 days true 2.68 1%
Simon_and_Jane_OZ 9/10 3310 days 1.97 1%
JoF 10/10 3332 days true 2.32 1%
Christian Kamm 10/10 3337 days true 2.31 1%
Michael Maddams 7/10 3338 days true 2.31 1%
Joanna Harrnon 10/10 3339 days true 2.31 1%
Sarah 8/10 3339 days true 2.31 1%
David 10/10 3340 days 1.92 1%
jjakkeren 9/10 3340 days true 2.31 1%
Alanna 10/10 3341 days true 2.31 1%
ElissaH 10/10 3342 days true 2.31 1%
Andrew Smith 9/10 3346 days true 2.3 1%
Jean 10/10 3356 days true 2.28 1%
CarinaB1 10/10 3361 days true 2.28 1%
Lindsey 9/10 3371 days 1.88 1%
Lisa 10/10 3376 days true 2.25 1%
Laura 8/10 3379 days true 2.25 1%
kiwibrit86 9/10 3381 days 1.87 1%
Visken 10/10 3383 days true 2.24 1%
Christina 10/10 3388 days true 2.23 1%
RachaelO 10/10 3390 days true 2.23 1%
Marianne 10/10 3390 days true 2.23 1%
Peppa 10/10 3390 days true 2.23 1%
Jackie 9/10 3404 days true 2.2 1%
Patrick 9/10 3404 days true 2.2 1%
Carla 8/10 3406 days true 2.2 1%
Keith 10/10 3411 days 1.83 1%
Saskia 9/10 3412 days true 2.19 1%
Patrick 10/10 3416 days true 2.18 1%
Charlie 9/10 3420 days true 2.18 1%
Ten 10/10 3420 days true 2.18 1%
Kevin Dangerfield 10/10 3429 days 1.8 1%
Graham 9/10 3444 days true 2.14 1%
David 10/10 3453 days true 2.12 1%
Eveline 10/10 3453 days true 2.12 1%
Mette 10/10 3460 days true 2.11 1%
Rowan 9/10 3485 days true 2.07 1%
Hanna 10/10 3485 days true 2.07 1%
Sally Walker 10/10 3491 days 1.72 1%
abby 10/10 3496 days true 2.05 1%
Paul 10/10 3507 days true 2.04 1%
Peter 10/10 3515 days true 2.02 1%
Anna 10/10 3537 days true 1.99 1%
Liz 9/10 3546 days true 1.97 1%
Laura 8/10 3546 days true 1.97 1%
Amy Shields 7/10 3550 days true 1.96 1%
Erin 9/10 3558 days true 1.95 1%
George Burgas 7/10 3564 days true 1.94 1%
Sharon Curly 7/10 3572 days true 1.93 1%
Peddy 8/10 3575 days 1.6 1%
Christine 9/10 3588 days true 1.9 1%
Charlie Bond 8/10 3621 days true 1.85 1%
SandyS 10/10 3675 days 1.47 0%
BexStar 10/10 3688 days 1.45 0%
Galen 9/10 3706 days true 1.71 1%
Monica Black 10/10 3706 days true 1.71 1%
Denise 10/10 3723 days true 1.68 1%
Ria 9/10 3727 days true 1.67 1%
Christian 7/10 3727 days true 1.67 1%
Wiebke 9/10 3731 days true 1.67 1%
Phil Connelly 9/10 3732 days true 1.67 1%
Amanda 9/10 3738 days true 1.66 1%
Erwin de Kleijn 9/10 3745 days true 1.64 1%
Nick 10/10 3754 days true 1.63 1%
John 9/10 3754 days true 1.63 1%
Sandra Gustafson 10/10 3782 days true 1.58 1%
Jo 10/10 3782 days true 1.58 1%
Helena 10/10 3783 days true 1.58 1%
Seldam 8/10 3788 days true 1.57 1%
Andrew Purdam 7/10 3796 days 1.3 0%
Gerber Liselotte 10/10 3814 days true 1.53 0%
Gabriela Herger 8/10 3822 days true 1.52 0%
Jane Coleman 8/10 3825 days true 1.51 0%
Wendy Williams 9/10 3832 days true 1.5 0%
Claire 8/10 4056 days true 1.13 0%
Will 9/10 4056 days true 1.13 0%
JanKovar 10/10 4058 days true 1.13 0%
Justin 10/10 4061 days true 1.12 0%
Beth 9/10 4067 days true 1.11 0%
Hanneke 9/10 4068 days true 1.11 0%
Cat 8/10 4070 days true 1.11 0%
MartinTrenker 9/10 4076 days true 1.1 0%
Janneke 10/10 4077 days true 1.1 0%
Renee 9/10 4080 days true 1.09 0%
Elke 8/10 4095 days true 1.07 0%
Malon 10/10 4096 days true 1.07 0%
Ralph 10/10 4105 days true 1.05 0%
Lucy 10/10 4105 days true 1.05 0%
Gordon 8/10 4117 days true 1.03 0%
Beate 9/10 4118 days true 1.03 0%
MartinJago 8/10 4129 days true 1.01 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 Dolphin Encounter Kaikoura experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-0.68% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Dolphin Encounter Kaikoura 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 Dolphin Encounter Kaikoura experience has been adjusted for 34 days. Adjustments are according to the following table.

Days Adjustment
31 -0.62%
32 -0.64%
33 -0.66%
34 -0.68%
35 -0.70%
36 -0.72%
37 -0.74%

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.