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

58 Valid Reviews

The Mountain Helicopters experience has a total of 61 reviews. There are 58 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 58 valid reviews:

Rating Count Percentage
10/10 48
83%
9/10 7
12%
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%

97.76% Average

The raw data average (mean) for all the Mountain Helicopters valid reviews is 97.76% and is based on 58 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 58 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

97.95%

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
Bruce Phillips 10/10 139 days 100%
Philipp Kulik 10/10 139 days 100%
Lena 9/10 445 days 85%
Nate Smith 10/10 504 days 61%
John Jones 10/10 688 days 31%
Natasha Walker 10/10 809 days 17%
Richard Thompson 10/10 840 days 15%
Tom Nicol 10/10 932 days 8%
Ian Watson 10/10 1144 days 4%
Dorota Kimber 10/10 1174 days 4%
Luke Roberts 10/10 1358 days 3%
Glyn and Karen Farlow 10/10 1435 days 4%
Maria den Otter 10/10 1478 days 3%
Beverley Ceci 10/10 1478 days 3%
Henry Papuni 10/10 1478 days 3%
B D 10/10 1478 days 3%
Tracey Harrison 10/10 1509 days 3%
Zoe Heij 10/10 1723 days 3%
Franzyy 10/10 1753 days 3%
Margo Boyd 10/10 1812 days 3%
Dan 10/10 1812 days 3%
chrswdance 10/10 1874 days 3%
melemele 10/10 2118 days 2%
joeweiss 10/10 2178 days 2%
kiwifrenchy 9/10 2178 days 2%
MartinaCH 10/10 2209 days 2%
Marieke 10/10 2240 days 2%
dr_bc_gunther 10/10 2362 days 2%
Desma Frampton 10/10 2497 days 2%
Irene and Werner Keil 10/10 2504 days 2%
Farmer_sutra 10/10 2515 days 2%
Marleen Meyers 8/10 2526 days 2%
Dieter Uhlmann 8/10 2526 days 2%
cate 10/10 2543 days 2%
miscellanea4 10/10 2574 days 2%
William_Symington 10/10 2635 days 2%
GaryHulst 10/10 2696 days 2%
jbchandler 10/10 2819 days 1%
Birgit Farwig 10/10 2861 days 2%
sirous21 10/10 2908 days 1%
Keith Margan 10/10 2908 days 1%
Kevin and Teresa 10/10 2908 days 2%
middendorp 9/10 2954 days 2%
PatH 9/10 3014 days 2%
Eva Maria 10/10 3061 days 1%
regw 10/10 3090 days 1%
Andrea 9/10 3134 days 1%
Lilly Tillman 10/10 3231 days 1%
Gray 9/10 3450 days 1%
ashmann 10/10 3544 days 0%
George Jeffs 10/10 3593 days 1%
Ian and Judy 9/10 3615 days 1%
Susannah May 10/10 3617 days 0%
Victoria Manning 10/10 3617 days 0%
Wendy Lomas 8/10 3623 days 1%
Kathleen L 10/10 3623 days 1%
Paul Cripps 10/10 3623 days 1%
Petra 10/10 3951 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

-2.36% 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 118 days. Adjustments are according to the following table.

Days Adjustment
115 -2.30%
116 -2.32%
117 -2.34%
118 -2.36%
119 -2.38%
120 -2.40%
121 -2.42%

Final Ranking Score

96%

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.