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 Mountain Helicopters.

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

Mountain Helicopters

Valid Reviews

56 Valid Reviews

The Mountain Helicopters experience has a total of 59 reviews. There are 56 valid reviews that are included when calculating the ranking score and 3 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 56 valid reviews:

Rating Count Percentage
10/10 46
82%
9/10 7
13%
8/10 3
5%
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%

97.68% Average

The raw data average (mean) for all the Mountain Helicopters valid reviews is 97.68% and is based on 56 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

19 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 56 valid reviews, the experience has 19 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 19 face-to-face reviews:

Rating Count Percentage
10/10 10
53%
9/10 6
32%
8/10 3
16%
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%

93.68% Average

The raw data average (mean) for all the Mountain Helicopters face-to-face reviews is 93.68% and is based on 19 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

97.18%

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
Lena 9/10 293 days 100%
Nate Smith 10/10 352 days 77%
John Jones 10/10 536 days 52%
Natasha Walker 10/10 657 days 33%
Richard Thompson 10/10 688 days 29%
Tom Nicol 10/10 780 days 19%
Ian Watson 10/10 992 days 5%
Dorota Kimber 10/10 1022 days 4%
Luke Roberts 10/10 1206 days 3%
Glyn and Karen Farlow 10/10 1283 days 4%
Maria den Otter 10/10 1326 days 3%
Beverley Ceci 10/10 1326 days 3%
Henry Papuni 10/10 1326 days 3%
B D 10/10 1326 days 3%
Tracey Harrison 10/10 1357 days 3%
Zoe Heij 10/10 1571 days 3%
Franzyy 10/10 1601 days 3%
Margo Boyd 10/10 1660 days 3%
Dan 10/10 1660 days 3%
chrswdance 10/10 1722 days 3%
melemele 10/10 1966 days 2%
joeweiss 10/10 2026 days 2%
kiwifrenchy 9/10 2026 days 2%
MartinaCH 10/10 2057 days 2%
Marieke 10/10 2088 days 2%
dr_bc_gunther 10/10 2210 days 2%
Desma Frampton 10/10 2345 days 2%
Irene and Werner Keil 10/10 2352 days 2%
Farmer_sutra 10/10 2363 days 2%
Marleen Meyers 8/10 2374 days 2%
Dieter Uhlmann 8/10 2374 days 2%
cate 10/10 2391 days 2%
miscellanea4 10/10 2422 days 2%
William_Symington 10/10 2483 days 2%
GaryHulst 10/10 2544 days 1%
jbchandler 10/10 2667 days 1%
Birgit Farwig 10/10 2709 days 2%
sirous21 10/10 2756 days 1%
Keith Margan 10/10 2756 days 1%
Kevin and Teresa 10/10 2756 days 2%
middendorp 9/10 2802 days 2%
PatH 9/10 2862 days 2%
Eva Maria 10/10 2909 days 1%
regw 10/10 2938 days 1%
Andrea 9/10 2982 days 1%
Lilly Tillman 10/10 3079 days 1%
Gray 9/10 3298 days 1%
ashmann 10/10 3391 days 0%
George Jeffs 10/10 3441 days 1%
Ian and Judy 9/10 3463 days 1%
Susannah May 10/10 3465 days 0%
Victoria Manning 10/10 3465 days 0%
Wendy Lomas 8/10 3471 days 1%
Kathleen L 10/10 3471 days 1%
Paul Cripps 10/10 3471 days 1%
Petra 10/10 3799 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 Mountain Helicopters experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-2.38% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Mountain Helicopters 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 Mountain Helicopters experience has been adjusted for 119 days. Adjustments are according to the following table.

Days Adjustment
116 -2.32%
117 -2.34%
118 -2.36%
119 -2.38%
120 -2.40%
121 -2.42%
122 -2.44%

Final Ranking Score

95%

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.