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 Ultimate Descents New Zealand.

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

Ultimate Descents New Zealand

Valid Reviews

50 Valid Reviews

The Ultimate Descents New Zealand experience has a total of 50 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 50 valid reviews:

Rating Count Percentage
10/10 27
54%
9/10 10
20%
8/10 9
18%
7/10 3
6%
6/10 1
2%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

91.80% Average

The raw data average (mean) for all the Ultimate Descents New Zealand valid reviews is 91.80% and is based on 50 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

16 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 50 valid reviews, the experience has 16 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 16 face-to-face reviews:

Rating Count Percentage
10/10 4
25%
9/10 5
31%
8/10 6
38%
7/10 0
0%
6/10 1
6%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

86.88% Average

The raw data average (mean) for all the Ultimate Descents New Zealand face-to-face reviews is 86.88% and is based on 16 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

92.06%

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
Tamsin Banks 10/10 817 days 100%
Antoine 9/10 1460 days 25%
Louison Laissus 9/10 1460 days 25%
Inga Memmen 10/10 1477 days 25%
Howell Davies 8/10 2190 days 18%
Frank & Margot Best 8/10 2499 days 14%
Weez18 10/10 2516 days 10%
Cory Wornell 8/10 2536 days 14%
Coral Last 8/10 2547 days 14%
Maite Severins 8/10 2566 days 14%
aggiemary04 10/10 2698 days 9%
jameyg 10/10 2820 days 8%
That_Guy 10/10 2851 days 7%
Tony Dodds 10/10 2881 days 7%
Patti S 7/10 2912 days 7%
Alain Deslandres 6/10 2953 days 10%
hobbes193 10/10 2971 days 6%
ChristinaO 8/10 2971 days 6%
Grainne Ahern 10/10 2971 days 6%
Chidlebyte 10/10 2971 days 6%
paulj 9/10 2987 days 9%
micha_de 10/10 3002 days 6%
Debs NZ 10/10 3002 days 6%
Julie Seakins 10/10 3002 days 6%
Tash 10/10 3246 days 4%
Jason 10/10 3246 days 4%
scott lomill 10/10 3249 days 4%
Sam 10/10 3267 days 6%
mnk 10/10 3277 days 4%
John 9/10 3287 days 6%
Laura 10/10 3294 days 6%
Jenny 8/10 3295 days 6%
Dave 9/10 3295 days 6%
Cliff 10/10 3302 days 6%
petra 7/10 3305 days 3%
anette brown 10/10 3305 days 3%
Ciaran Doyle 9/10 3309 days 3%
niall stephenson 8/10 3309 days 3%
pcoll 9/10 3336 days 3%
Matthias Hinnrichs 9/10 3355 days 3%
Georgina Mulligan 10/10 3566 days 1%
Laura H 9/10 3575 days 1%
Shane O'Mahony 9/10 3575 days 1%
Eric Scott 7/10 3592 days 1%
Rose M 10/10 3598 days 1%
russell_mahar 8/10 3598 days 1%
kevoc9 10/10 3622 days 1%
Lindsey_Morriss 10/10 3705 days 0%
cmorriss 10/10 3705 days 0%
Travis Brennan 10/10 3705 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 Ultimate Descents New Zealand 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 Ultimate Descents New Zealand 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 Ultimate Descents New Zealand 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

85%

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.