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 River Valley Rafting.

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

River Valley Rafting

Valid Reviews

48 Valid Reviews

The River Valley Rafting experience has a total of 49 reviews. There are 48 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 48 valid reviews:

Rating Count Percentage
10/10 21
44%
9/10 14
29%
8/10 9
19%
7/10 2
4%
6/10 2
4%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

90.42% Average

The raw data average (mean) for all the River Valley Rafting valid reviews is 90.42% and is based on 48 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

42 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 48 valid reviews, the experience has 42 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 42 face-to-face reviews:

Rating Count Percentage
10/10 15
36%
9/10 14
33%
8/10 9
21%
7/10 2
5%
6/10 2
5%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

89.05% Average

The raw data average (mean) for all the River Valley Rafting face-to-face reviews is 89.05% and is based on 42 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

95.72%

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
R R 10/10 265 days 88.87 100%
Juliane Mueller 10/10 788 days true 23.92 26%
Dave Lamb 9/10 829 days true 19.45 21%
Chris Simpson 10/10 864 days true 16.15 17%
Josefin Lind 8/10 1524 days true 5.29 5%
Herman Holmgist 10/10 1524 days true 5.29 5%
Kate Morgan 10/10 2629 days true 3.48 3%
Theta 10/10 3006 days 2.38 2%
Michael 10/10 3016 days true 2.84 2%
Canuck85 10/10 3340 days 1.92 1%
danam 10/10 3341 days true 2.31 1%
PBouwmessten 9/10 3360 days true 2.28 1%
boz 10/10 3372 days true 2.26 1%
Tom 9/10 3374 days true 2.25 1%
Tom 8/10 3374 days true 2.25 1%
Karen 9/10 3402 days true 2.21 1%
Sophie 8/10 3412 days true 2.19 1%
Richard Rodd 10/10 3418 days 1.82 1%
tarahenrys 10/10 3461 days 1.76 1%
David 9/10 3559 days true 1.95 1%
Terri Scott 10/10 3576 days true 1.92 1%
Mike Dudey 6/10 3622 days true 1.85 1%
Nick 9/10 3726 days true 1.68 1%
Robert 10/10 3732 days true 1.67 1%
Elise 10/10 3732 days true 1.67 1%
Fung 10/10 3732 days true 1.67 1%
Shannon 7/10 3732 days true 1.67 1%
Hannah Holmes 7/10 3740 days true 1.65 1%
Sue 9/10 3744 days true 1.65 1%
Gina 6/10 3749 days true 1.64 1%
Issy 9/10 3749 days true 1.64 1%
Chris 8/10 3765 days true 1.61 1%
Stacey 8/10 3765 days true 1.61 1%
Christina 10/10 4010 days 1.01 0%
Tomomi 8/10 4068 days true 1.11 0%
Dave 9/10 4070 days true 1.11 0%
Uri 10/10 4070 days true 1.11 0%
James 9/10 4070 days true 1.11 0%
Valerie 9/10 4077 days true 1.1 0%
Karen Nellist 8/10 4095 days true 1.07 0%
GillianW 8/10 4096 days true 1.07 0%
Camilla 9/10 4116 days true 1.03 0%
Twan 8/10 4116 days true 1.03 0%
PaulineTurner 10/10 4117 days true 1.03 0%
RosalindBoyes 9/10 4117 days true 1.03 0%
Paul 10/10 4118 days true 1.03 0%
Stauros 9/10 4118 days true 1.03 0%
ranker_410 10/10 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 River Valley Rafting experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.68% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the River Valley Rafting 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 River Valley Rafting experience has been adjusted for 234 days. Adjustments are according to the following table.

Days Adjustment
231 -4.62%
232 -4.64%
233 -4.66%
234 -4.68%
235 -4.70%
236 -4.72%
237 -4.74%

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.