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 ZORB Rotorua.

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

ZORB Rotorua

Valid Reviews

132 Valid Reviews

The ZORB Rotorua experience has a total of 133 reviews. There are 132 valid reviews that are included when calculating the ranking score and 1 invalid review 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 132 valid reviews:

Rating Count Percentage
10/10 27
20%
9/10 17
13%
8/10 38
29%
7/10 26
20%
6/10 13
10%
5/10 5
4%
4/10 4
3%
3/10 2
2%
2/10 0
0%
1/10 0
0%

78.33% Average

The raw data average (mean) for all the ZORB Rotorua valid reviews is 78.33% and is based on 132 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

120 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 132 valid reviews, the experience has 120 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 120 face-to-face reviews:

Rating Count Percentage
10/10 24
20%
9/10 16
13%
8/10 37
31%
7/10 21
18%
6/10 12
10%
5/10 4
3%
4/10 4
3%
3/10 2
2%
2/10 0
0%
1/10 0
0%

78.42% Average

The raw data average (mean) for all the ZORB Rotorua face-to-face reviews is 78.42% and is based on 120 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

76.19%

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
Izzy 7/10 60 days 90.48 100%
Auba Mateos 10/10 1163 days true 4.87 5%
May 10/10 1229 days true 4.74 5%
Nathan Raymond 4/10 1491 days true 3.34 4%
Raylene Luison 8/10 1499 days true 4.0 4%
Tamara 10/10 1524 days true 4.16 5%
Brennan Jungling 8/10 1530 days true 3.94 4%
Anita Wallace 9/10 1530 days true 4.15 5%
Linda and Gunther 10/10 1566 days true 4.08 5%
Janek Belcher 8/10 2200 days true 2.7 3%
Robert Erni 7/10 2201 days true 2.58 3%
Vanessa 8/10 2220 days true 2.66 3%
Olivia 8/10 2235 days true 2.63 3%
Callum 8/10 2235 days true 2.63 3%
David Lee 8/10 2600 days true 1.95 2%
Thibault Bonenfant 10/10 2684 days true 1.89 2%
Lisa Blake 8/10 2694 days true 1.78 2%
Elisabeth 10/10 2975 days true 1.32 1%
Asha 7/10 3013 days 1.13 1%
Mark & Beth Kaufman 8/10 3048 days true 1.12 1%
Harry Simpson 10/10 3051 days true 1.17 1%
kirribilliangel 7/10 3135 days 0.92 1%
Dave van Bergen 8/10 3283 days true 0.68 1%
Jennifer Holloway 9/10 3293 days true 0.7 1%
Julia 10/10 3302 days true 0.68 1%
Isabell 7/10 3307 days true 0.61 1%
Tim 6/10 3309 days true 0.55 1%
WeddingMaven 9/10 3319 days 0.65 1%
Natthien Le Gall 7/10 3320 days true 0.59 1%
Paap 8/10 3324 days true 0.61 1%
Wouter Jansen 8/10 3324 days true 0.61 1%
Kat Fleming 9/10 3333 days true 0.62 1%
Invictus 8/10 3500 days 0.28 0%
heather Cardinal 3/10 3639 days true 0.02 0%
Mathias Skov 6/10 3698 days true 0.0 0%
jameswhite 8/10 3766 days true 0.0 0%
asiacritics 6/10 3774 days 0.0 0%
nancyburns 7/10 3774 days 0.0 0%
Lesley Nixon 4/10 3784 days true 0.0 0%
Ash Sturm 10/10 3804 days 0.0 0%
clairet 7/10 3883 days true 0.0 0%
BryonyS 10/10 4006 days true 0.0 0%
Sofie 8/10 4018 days true 0.0 0%
desl 10/10 4018 days true 0.0 0%
Steve Harper 7/10 4025 days true 0.0 0%
Yvanna 8/10 4037 days true 0.0 0%
LucyPoland 9/10 4039 days true 0.0 0%
Amelie 8/10 4039 days true 0.0 0%
OllyD 7/10 4047 days true 0.0 0%
JessicaS1 9/10 4050 days true 0.0 0%
TomC1 8/10 4051 days true 0.0 0%
TrevorK 8/10 4051 days true 0.0 0%
AndyK 10/10 4051 days true 0.0 0%
SarahK 10/10 4051 days true 0.0 0%
FrancesG 8/10 4051 days true 0.0 0%
RachelR 10/10 4051 days true 0.0 0%
SofiaBrazil 8/10 4051 days true 0.0 0%
EmmaL 10/10 4051 days true 0.0 0%
Sarah 9/10 4055 days true 0.0 0%
Ed 8/10 4055 days true 0.0 0%
Carmel 10/10 4058 days true 0.0 0%
Amanda Williams 10/10 4059 days 0.0 0%
Cilla 10/10 4060 days true 0.0 0%
MayGermany 6/10 4060 days true 0.0 0%
Craig 10/10 4075 days true 0.0 0%
Florian 10/10 4075 days true 0.0 0%
SonjaS 8/10 4077 days true 0.0 0%
Mimi 10/10 4083 days true 0.0 0%
Jasmine 10/10 4084 days true 0.0 0%
Rose 7/10 4084 days true 0.0 0%
Liz 7/10 4090 days true 0.0 0%
Bonnie Turner 5/10 4108 days 0.0 0%
Stephanie 9/10 4118 days true 0.0 0%
Sonja 6/10 4123 days true 0.0 0%
Helen 7/10 4131 days true 0.0 0%
Liekens 7/10 4139 days true 0.0 0%
Evelyn 10/10 4153 days true 0.0 0%
Michelle 7/10 4192 days 0.0 0%
Chris 10/10 4193 days true 0.0 0%
Dave 8/10 4208 days true 0.0 0%
Anna 10/10 4216 days true 0.0 0%
Ele 10/10 4243 days 0.0 0%
Brent Scanlan 8/10 4360 days true 0.0 0%
Bernie 9/10 4404 days true 0.0 0%
Emily Houston 8/10 4415 days true 0.0 0%
Gina 8/10 4427 days true 0.0 0%
Julie 7/10 4427 days true 0.0 0%
Katharina 9/10 4430 days true 0.0 0%
Chris 4/10 4443 days true 0.0 0%
Andre Obineche 8/10 4458 days true 0.0 0%
Clive 7/10 4458 days true 0.0 0%
Lindsey Woosnam 9/10 4461 days true 0.0 0%
Anu 5/10 4464 days true 0.0 0%
Lanni 7/10 4465 days true 0.0 0%
Andrew 8/10 4465 days true 0.0 0%
Andrew Porter 6/10 4466 days true 0.0 0%
Pete 7/10 4507 days true 0.0 0%
Orla 6/10 4508 days true 0.0 0%
Richard Kindgren 7/10 4510 days true 0.0 0%
Miriam&Eva 6/10 4708 days true 0.0 0%
HalRoberts 7/10 4730 days true 0.0 0%
Will 8/10 4734 days true 0.0 0%
Helen 9/10 4736 days true 0.0 0%
Heather 10/10 4736 days true 0.0 0%
Matt 8/10 4736 days true 0.0 0%
Richard 7/10 4736 days true 0.0 0%
ShoshanaAbrams 9/10 4739 days true 0.0 0%
Elaine 8/10 4739 days true 0.0 0%
Gwen 4/10 4742 days true 0.0 0%
Matt 9/10 4746 days true 0.0 0%
Gillian 6/10 4747 days true 0.0 0%
Lorraine 6/10 4754 days true 0.0 0%
Jack 5/10 4754 days true 0.0 0%
Jen 6/10 4754 days true 0.0 0%
TrineLyst 8/10 4755 days true 0.0 0%
Sean 5/10 4758 days true 0.0 0%
Marcus 7/10 4758 days true 0.0 0%
Katie 7/10 4758 days true 0.0 0%
Dan 8/10 4759 days true 0.0 0%
Sarah 7/10 4759 days true 0.0 0%
Emma Gareth 8/10 4770 days true 0.0 0%
MariaNorman 8/10 4774 days true 0.0 0%
MarcHarris 8/10 4774 days true 0.0 0%
Tom 8/10 4783 days true 0.0 0%
Lucy 9/10 4783 days true 0.0 0%
Nissa 9/10 4783 days true 0.0 0%
Suzy 7/10 4788 days true 0.0 0%
Nina 6/10 4790 days true 0.0 0%
Inga 5/10 4790 days true 0.0 0%
FredAndersson 6/10 4794 days true 0.0 0%
Cat 9/10 4796 days true 0.0 0%
SallySpencer 3/10 4809 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 ZORB Rotorua experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-0.48% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the ZORB Rotorua 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 ZORB Rotorua experience has been adjusted for 24 days. Adjustments are according to the following table.

Days Adjustment
21 -0.42%
22 -0.44%
23 -0.46%
24 -0.48%
25 -0.50%
26 -0.52%
27 -0.54%

Final Ranking Score

76%

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.