Hey, 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 Riverjet NZ.

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.

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Cymen Crick's avatar

Cymen Crick

Rankers Owner

Riverjet NZ

Valid Reviews

65 Valid Reviews

The Riverjet NZ experience has a total of 66 reviews. There are 65 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 65 valid reviews:

Rating Count Percentage
10/10 54
83%
9/10 9
14%
8/10 2
3%
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%

98.00% Average

The raw data average (mean) for all the Riverjet NZ valid reviews is 98.00% and is based on 65 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

9 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 65 valid reviews, the experience has 9 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 9 face-to-face reviews:

Rating Count Percentage
10/10 2
22%
9/10 6
67%
8/10 1
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%

91.11% Average

The raw data average (mean) for all the Riverjet NZ face-to-face reviews is 91.11% and is based on 9 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

98.32%

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
Stefan Zink 10/10 2916 days 70%
Mark Rosenberg 10/10 3094 days 88%
Josef Biller 9/10 3303 days 51%
Peter Bateman 10/10 3308 days 73%
Richard 10/10 3338 days 71%
Anna Herd 10/10 3430 days 65%
Rhonda McKinney 10/10 3552 days 56%
Dan Vaughan 8/10 3672 days 47%
Aida Azlan 10/10 3703 days 46%
Lisa Aitken 10/10 3795 days 40%
Joel Burken 10/10 3918 days 31%
Laina Black 9/10 4009 days 17%
Ricky White 9/10 4009 days 17%
Rob Van Proemeren 10/10 4038 days 23%
Phil & Tanya Thompson 10/10 4069 days 21%
Karrie Stephens 10/10 4069 days 21%
Jen Unsworth 10/10 4100 days 19%
Yumiko Kawano 10/10 4130 days 17%
Sabbsilein 10/10 4161 days 15%
PeterCollins 10/10 4344 days 2%
Bonnie and David Appleby 9/10 4375 days 0%
Rebecca 10/10 4375 days 0%
Cassandra Rakei 10/10 4375 days 0%
Courtney Quintrell 9/10 4382 days 24%
Katie Quantrell 9/10 4403 days 34%
johannesivarsson 10/10 4434 days 35%
jess 10/10 4526 days 35%
BrendaC 10/10 4526 days 35%
Jenn 10/10 4526 days 35%
kirstyrose 10/10 4526 days 35%
Sophie13 10/10 4648 days 35%
pbau 10/10 4679 days 35%
TheHoon 10/10 4709 days 35%
Lisa Carey 9/10 4726 days 24%
dbr 10/10 4740 days 35%
Asha 10/10 4800 days 35%
shezabear 10/10 4831 days 35%
rach_taylor 10/10 4861 days 35%
lindahealey 10/10 4861 days 35%
someone 10/10 5014 days 35%
lisabraden 10/10 5075 days 35%
T Chapman 9/10 5129 days 24%
Lynnie 9/10 5134 days 34%
smegs 10/10 5165 days 35%
saramaria 10/10 5226 days 35%
adfc416 10/10 5226 days 35%
UlsterOgre 10/10 5226 days 35%
Fred 10/10 5318 days 35%
fayz 10/10 5349 days 35%
sheppy99 10/10 5349 days 35%
fdrspins 10/10 5410 days 35%
beans44 10/10 5499 days 35%
Sue Pond 10/10 5714 days 35%
Di Christie 10/10 5744 days 35%
Towtz 10/10 5775 days 35%
ozpete 10/10 5830 days 35%
vanessa hateley 10/10 5842 days 35%
etb 10/10 5853 days 35%
Philip 8/10 5854 days 24%
emma weir 10/10 5861 days 35%
stuart and sue barnetson 10/10 6056 days 35%
Guilfords 10/10 6057 days 35%
Peter Lonsdale 10/10 6170 days 35%
Mie Toft Pedersen 10/10 6201 days 24%
Amanda McCaig 10/10 6201 days 35%

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 Riverjet NZ experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.14% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 53 days. However the Riverjet NZ 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 Riverjet NZ experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.08%
198 -4.10%
199 -4.12%
200 -4.14%
201 -4.16%
202 -4.18%
203 -4.20%

Balancing Adjustment

0.51% Adjustment

Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.

You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.

We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.

Final Ranking Score

95%

The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.