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

62 Valid Reviews

The Mountain Helicopters experience has a total of 66 reviews. There are 62 valid reviews that are included when calculating the ranking score and 4 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 62 valid reviews:

Rating Count Percentage
10/10 51
82%
9/10 7
11%
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 1
2%
1/10 0
0%

96.61% Average

The raw data average (mean) for all the Mountain Helicopters valid reviews is 96.61% and is based on 62 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 62 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

91.76%

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
Gary Nicholls 10/10 139 days 96.94 100%
Felicity Buckham 10/10 291 days 86.58 89%
Tina Laughton 2/10 566 days 37.01 38%
Pretorius Family 10/10 596 days 44.46 46%
Bruce Phillips 10/10 868 days 13.17 14%
Philipp Kulik 10/10 868 days 13.17 14%
Lena 9/10 1175 days true 4.84 5%
Nate Smith 10/10 1233 days 4.73 5%
John Jones 10/10 1417 days 4.37 5%
Natasha Walker 10/10 1539 days 4.13 4%
Richard Thompson 10/10 1570 days 4.07 4%
Tom Nicol 10/10 1661 days 3.89 4%
Ian Watson 10/10 1873 days 3.48 4%
Dorota Kimber 10/10 1903 days 3.42 4%
Luke Roberts 10/10 2088 days 3.06 3%
Glyn and Karen Farlow 10/10 2165 days true 2.91 3%
Maria den Otter 10/10 2207 days 2.82 3%
Beverley Ceci 10/10 2208 days 2.82 3%
Henry Papuni 10/10 2208 days 2.82 3%
B D 10/10 2208 days 2.82 3%
Tracey Harrison 10/10 2239 days 2.76 3%
Zoe Heij 10/10 2453 days 2.34 2%
Franzyy 10/10 2483 days 2.28 2%
Margo Boyd 10/10 2542 days 2.17 2%
Dan 10/10 2542 days 2.17 2%
chrswdance 10/10 2604 days 2.05 2%
melemele 10/10 2848 days 1.57 2%
joeweiss 10/10 2908 days 1.45 1%
kiwifrenchy 9/10 2908 days 1.45 1%
MartinaCH 10/10 2939 days 1.39 1%
Marieke 10/10 2970 days 1.33 1%
dr_bc_gunther 10/10 3092 days 1.09 1%
Desma Frampton 10/10 3227 days true 0.83 1%
Irene and Werner Keil 10/10 3234 days true 0.81 1%
Farmer_sutra 10/10 3245 days 0.79 1%
Marleen Meyers 8/10 3256 days true 0.73 1%
Dieter Uhlmann 8/10 3256 days true 0.73 1%
cate 10/10 3273 days 0.74 1%
miscellanea4 10/10 3304 days 0.68 1%
William_Symington 10/10 3365 days 0.56 1%
GaryHulst 10/10 3426 days 0.44 0%
jbchandler 10/10 3549 days 0.2 0%
Birgit Farwig 10/10 3591 days true 0.12 0%
sirous21 10/10 3638 days 0.02 0%
Keith Margan 10/10 3638 days 0.02 0%
Kevin and Teresa 10/10 3638 days true 0.02 0%
middendorp 9/10 3684 days true 0.0 0%
PatH 9/10 3744 days true 0.0 0%
Eva Maria 10/10 3791 days 0.0 0%
regw 10/10 3820 days true 0.0 0%
Andrea 9/10 3864 days true 0.0 0%
Lilly Tillman 10/10 3961 days 0.0 0%
Gray 9/10 4179 days true 0.0 0%
ashmann 10/10 4273 days 0.0 0%
George Jeffs 10/10 4323 days true 0.0 0%
Ian and Judy 9/10 4345 days true 0.0 0%
Susannah May 10/10 4346 days 0.0 0%
Victoria Manning 10/10 4346 days 0.0 0%
Wendy Lomas 8/10 4353 days true 0.0 0%
Kathleen L 10/10 4353 days true 0.0 0%
Paul Cripps 10/10 4353 days true 0.0 0%
Petra 10/10 4681 days true 0.0 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

-2.62% 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 199 days.

The Mountain Helicopters experience has been adjusted for 131 days. Adjustments are according to the following table.

Days Adjustment
128 -2.56%
129 -2.58%
130 -2.60%
131 -2.62%
132 -2.64%
133 -2.66%
134 -2.68%

Final Ranking Score

89%

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.