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 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.

Nick Morrison's avatar

Nick Morrison

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

97.88%

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
Stefan Zink 10/10 752 days true 28.37 100%
Mark Rosenberg 10/10 930 days 9.31 30%
Josef Biller 9/10 1139 days true 5.93 18%
Peter Bateman 10/10 1144 days 4.93 14%
Richard 10/10 1174 days 4.89 14%
Anna Herd 10/10 1266 days 4.77 14%
Rhonda McKinney 10/10 1388 days 4.6 13%
Dan Vaughan 8/10 1508 days 4.43 13%
Aida Azlan 10/10 1539 days 4.39 12%
Lisa Aitken 10/10 1631 days 4.27 12%
Joel Burken 10/10 1754 days 4.1 11%
Laina Black 9/10 1845 days true 4.77 14%
Ricky White 9/10 1845 days true 4.77 14%
Rob Van Proemeren 10/10 1874 days 3.93 11%
Phil & Tanya Thompson 10/10 1905 days 3.89 11%
Karrie Stephens 10/10 1905 days 3.89 11%
Jen Unsworth 10/10 1936 days 3.85 11%
Yumiko Kawano 10/10 1966 days 3.81 10%
Sabbsilein 10/10 1997 days 3.76 10%
PeterCollins 10/10 2180 days 3.51 9%
Bonnie and David Appleby 9/10 2211 days 3.47 9%
Rebecca 10/10 2211 days 3.47 9%
Cassandra Rakei 10/10 2211 days 3.47 9%
Courtney Quintrell 9/10 2218 days true 4.15 12%
Katie Quantrell 9/10 2239 days 3.43 9%
johannesivarsson 10/10 2270 days 3.39 9%
jess 10/10 2362 days 3.26 8%
BrendaC 10/10 2362 days 3.26 8%
Jenn 10/10 2362 days 3.26 8%
kirstyrose 10/10 2362 days 3.26 8%
Sophie13 10/10 2484 days 3.1 8%
pbau 10/10 2515 days 3.05 8%
TheHoon 10/10 2545 days 3.01 7%
Lisa Carey 9/10 2562 days true 3.59 10%
dbr 10/10 2576 days 2.97 7%
Asha 10/10 2636 days 2.89 7%
shezabear 10/10 2667 days 2.85 7%
rach_taylor 10/10 2697 days 2.81 7%
lindahealey 10/10 2697 days 2.81 7%
someone 10/10 2850 days 2.6 6%
lisabraden 10/10 2911 days 2.51 6%
T Chapman 9/10 2965 days true 2.93 7%
Lynnie 9/10 2970 days 2.43 5%
smegs 10/10 3001 days 2.39 5%
saramaria 10/10 3062 days 2.31 5%
adfc416 10/10 3062 days 2.31 5%
UlsterOgre 10/10 3062 days 2.31 5%
Fred 10/10 3154 days 2.18 4%
fayz 10/10 3185 days 2.14 4%
sheppy99 10/10 3185 days 2.14 4%
fdrspins 10/10 3246 days 2.05 4%
beans44 10/10 3335 days 1.93 4%
Sue Pond 10/10 3550 days 1.64 2%
Di Christie 10/10 3580 days 1.6 2%
Towtz 10/10 3611 days 1.55 2%
ozpete 10/10 3666 days 1.48 2%
vanessa hateley 10/10 3678 days 1.46 2%
etb 10/10 3689 days 1.45 2%
Philip 8/10 3690 days true 1.73 3%
emma weir 10/10 3697 days 1.44 2%
stuart and sue barnetson 10/10 3892 days 1.17 1%
Guilfords 10/10 3893 days 1.17 1%
Peter Lonsdale 10/10 4006 days 1.01 0%
Mie Toft Pedersen 10/10 4037 days true 1.16 1%
Amanda McCaig 10/10 4037 days 0.97 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 Riverjet NZ experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-7.28% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 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 364 days.

The Riverjet NZ experience has been adjusted for 364 days. Adjustments are according to the following table.

Days Adjustment
361 -7.22%
362 -7.24%
363 -7.26%
364 -7.28%
365 -7.30%
366 -7.32%
367 -7.34%

Final Ranking Score

91%

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.

Love Christchurch