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 Rangitata Rafts Ltd.

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

Rangitata Rafts Ltd

Valid Reviews

78 Valid Reviews

The Rangitata Rafts Ltd experience has a total of 78 valid reviews. There are no 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 78 valid reviews:

Rating Count Percentage
10/10 55
71%
9/10 14
18%
8/10 7
9%
7/10 1
1%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 1
1%

94.87% Average

The raw data average (mean) for all the Rangitata Rafts Ltd valid reviews is 94.87% and is based on 78 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

33 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 78 valid reviews, the experience has 33 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 33 face-to-face reviews:

Rating Count Percentage
10/10 17
52%
9/10 10
30%
8/10 5
15%
7/10 1
3%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

93.03% Average

The raw data average (mean) for all the Rangitata Rafts Ltd face-to-face reviews is 93.03% and is based on 33 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

94.94%

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
Liam Elferins 9/10 384 days 100%
Marjolen Klomphaler 10/10 407 days 96%
Sabrina Kulikar 10/10 444 days 90%
sanneke tangel 8/10 801 days 23%
Maria Schober 8/10 1102 days 5%
kevin george 10/10 1571 days 3%
Stu Murray 10/10 1816 days 4%
Fabian and Teresa 10/10 1837 days 4%
John 9/10 1899 days 4%
roos wubben 9/10 1922 days 4%
wtyson 1/10 1997 days 2%
Chris Marsh 10/10 2207 days 3%
budge69 10/10 2210 days 3%
CHOW 10/10 2333 days 2%
Marinathebraveone 10/10 2547 days 2%
louisemartensson 10/10 2547 days 2%
Becky Foley 9/10 2561 days 3%
NicoleM 8/10 2575 days 2%
Richie 9/10 2575 days 2%
chels144 10/10 2606 days 2%
mandiholtz 10/10 2637 days 2%
Shanel 10/10 2667 days 2%
LouiseVicente 10/10 2851 days 2%
SteveMcPeace 10/10 2881 days 2%
Nicola 10/10 2912 days 1%
Frances Hay 10/10 2939 days 2%
David Roque 10/10 2940 days 1%
Claudia Wälti 10/10 2940 days 1%
grobster 10/10 2940 days 1%
shannahan 9/10 2971 days 1%
ChristinaO 9/10 2971 days 1%
marianne petersen 10/10 2971 days 1%
Becca 10/10 2971 days 1%
Harry Gates 10/10 2971 days 1%
Shooter 10/10 2971 days 1%
godin 10/10 3002 days 1%
Gareth Jones 10/10 3002 days 1%
Gina Swindells 10/10 3013 days 2%
Ric Lee 10/10 3063 days 1%
Louise Humphreys 10/10 3063 days 1%
racheldonn 10/10 3063 days 1%
Sharon Heimeier 9/10 3093 days 1%
AoamC 9/10 3248 days 1%
Nicola 10/10 3249 days 1%
Paul 10/10 3249 days 1%
Neal 10/10 3249 days 1%
Helen Josten 10/10 3256 days 1%
Birgitte Weitemeyer 10/10 3261 days 1%
Greg18 8/10 3277 days 1%
RobC1 9/10 3281 days 1%
RichardB1 10/10 3281 days 1%
JoT 10/10 3281 days 1%
RobH 10/10 3282 days 1%
Steve Sayers 10/10 3283 days 1%
mash 10/10 3292 days 1%
renanf 10/10 3297 days 1%
Bronte Koop 10/10 3302 days 1%
Kasumi 10/10 3305 days 1%
De Kievit 8/10 3314 days 1%
Paul Moisy 10/10 3316 days 1%
Andrew 9/10 3322 days 1%
BenD 7/10 3336 days 1%
Julia Klingberg 10/10 3351 days 1%
Chris Hertz 10/10 3364 days 1%
jon c 10/10 3367 days 1%
Sue Stevens 10/10 3392 days 1%
Dal Piggott 10/10 3411 days 1%
Sam Prior 10/10 3461 days 1%
purplekat99 10/10 3611 days 0%
Renske Tehurne 9/10 3637 days 1%
Janne 10/10 3650 days 0%
John 8/10 3660 days 1%
Matt Walker 10/10 3660 days 1%
Sandra Gustafson 10/10 3688 days 1%
Brynn 9/10 3932 days 0%
David 9/10 3982 days 0%
NeilYeoman 10/10 3983 days 0%
Deirdre 8/10 4024 days 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 Rangitata Rafts Ltd experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.50% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Rangitata Rafts Ltd 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 Rangitata Rafts Ltd experience has been adjusted for 225 days. Adjustments are according to the following table.

Days Adjustment
222 -4.44%
223 -4.46%
224 -4.48%
225 -4.50%
226 -4.52%
227 -4.54%
228 -4.56%

Final Ranking Score

90%

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.