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 Fox Glacier & Franz Josef Heliservices.

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

Fox Glacier & Franz Josef Heliservices

Valid Reviews

48 Valid Reviews

The Fox Glacier & Franz Josef Heliservices experience has a total of 48 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 48 valid reviews:

Rating Count Percentage
10/10 20
42%
9/10 13
27%
8/10 9
19%
7/10 1
2%
6/10 4
8%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 1
2%
1/10 0
0%

87.92% Average

The raw data average (mean) for all the Fox Glacier & Franz Josef Heliservices valid reviews is 87.92% and is based on 48 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

42 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 48 valid reviews, the experience has 42 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 42 face-to-face reviews:

Rating Count Percentage
10/10 17
40%
9/10 12
29%
8/10 9
21%
7/10 1
2%
6/10 3
7%
5/10 0
0%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

89.29% Average

The raw data average (mean) for all the Fox Glacier & Franz Josef Heliservices face-to-face reviews is 89.29% and is based on 42 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

96.04%

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
S Weslake 10/10 206 days 93.28 100%
Jozef Pinkerton 10/10 377 days 77.48 83%
Audeme Mechain 10/10 570 days true 58.41 62%
Brenda Oomen 10/10 935 days true 10.87 11%
Fabian Rodriguez 10/10 1575 days 4.34 4%
Markus Spitzmueller 10/10 1702 days true 5.0 4%
Stefanie Menz 6/10 2019 days true 4.48 4%
Peer Krumrey 7/10 2019 days true 4.48 4%
Karin Genyn 10/10 2108 days true 4.33 4%
Evelyn Mackie 10/10 2390 days true 3.87 3%
Steve Goodyear 8/10 2418 days true 3.83 3%
Louis Smit 6/10 2421 days true 3.82 3%
Sarah and Uli Glas 9/10 2743 days true 3.29 3%
Ian and Ailsa 10/10 2750 days true 3.28 3%
Cameron and Kim 8/10 2762 days true 3.26 3%
Dave and Lin Mungham 10/10 2784 days true 3.22 3%
Wijnhoven 9/10 2788 days true 3.22 3%
Hilary and Chris Ayton 9/10 3116 days true 2.68 2%
Ingrid Zell 10/10 3119 days true 2.67 2%
Pam & Norman 9/10 3121 days true 2.67 2%
Matthiis & Femke 8/10 3135 days true 2.65 2%
Jenny 10/10 3136 days true 2.64 2%
Lewis 10/10 3149 days true 2.62 2%
R Gilge 10/10 3152 days true 2.62 2%
Carl Diehl 9/10 3154 days true 2.62 2%
Diane Chapple 9/10 3155 days true 2.61 2%
Chris Bulman 10/10 3229 days true 2.49 2%
Liliana Tello 9/10 3279 days 2.01 1%
linus 8/10 3344 days true 2.3 2%
ElleGermany 9/10 3450 days true 2.13 1%
Ger 9/10 3460 days true 2.11 1%
SteveB 10/10 3462 days true 2.11 1%
JuergenSchnitzer 10/10 3478 days true 2.08 1%
Lilly Tillman 2/10 3478 days 1.53 1%
Kitty 9/10 3479 days true 2.08 1%
Inger 8/10 3479 days true 2.08 1%
Stolz 10/10 3485 days true 2.07 1%
JetteG 10/10 3496 days true 2.05 1%
Inger Skov 8/10 3505 days true 2.04 1%
Edric Kwan 6/10 3505 days 1.7 1%
Raphael 9/10 3518 days true 2.02 1%
P&L Mooney 9/10 3636 days true 1.82 1%
Gorka Rojas 8/10 3734 days true 1.66 1%
Sanne 10/10 3855 days true 1.46 1%
Roger & Margaret 9/10 3876 days true 1.43 1%
Mel 8/10 3914 days true 1.37 1%
ranker_58 8/10 4064 days true 1.12 0%
Schranger 6/10 4199 days true 0.9 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 Fox Glacier & Franz Josef Heliservices experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-2.80% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the Fox Glacier & Franz Josef Heliservices 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 Fox Glacier & Franz Josef Heliservices experience has been adjusted for 140 days. Adjustments are according to the following table.

Days Adjustment
137 -2.74%
138 -2.76%
139 -2.78%
140 -2.80%
141 -2.82%
142 -2.84%
143 -2.86%

Final Ranking Score

93%

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.