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

95.33%

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 10/10 940 days 8.81 100%
Jozef Pinkerton 10/10 1111 days 4.97 56%
Audeme Mechain 10/10 1304 days true 4.59 52%
Brenda Oomen 10/10 1669 days true 3.88 44%
Fabian Rodriguez 10/10 2309 days 2.62 30%
Markus Spitzmueller 10/10 2436 days true 2.38 27%
Stefanie Menz 6/10 2753 days true 1.46 17%
Peer Krumrey 7/10 2753 days true 1.6 18%
Karin Genyn 10/10 2842 days true 1.58 18%
Evelyn Mackie 10/10 3124 days true 1.03 12%
Steve Goodyear 8/10 3152 days true 0.93 11%
Louis Smit 6/10 3155 days true 0.8 9%
Sarah and Uli Glas 9/10 3477 days true 0.34 4%
Ian and Ailsa 10/10 3484 days true 0.32 4%
Cameron and Kim 8/10 3496 days true 0.29 3%
Dave and Lin Mungham 10/10 3518 days true 0.26 3%
Wijnhoven 9/10 3522 days true 0.25 3%
Hilary and Chris Ayton 9/10 3850 days true 0.0 0%
Ingrid Zell 10/10 3853 days true 0.0 0%
Pam & Norman 9/10 3855 days true 0.0 0%
Matthiis & Femke 8/10 3869 days true 0.0 0%
Jenny 10/10 3870 days true 0.0 0%
Lewis 10/10 3883 days true 0.0 0%
R Gilge 10/10 3886 days true 0.0 0%
Carl Diehl 9/10 3888 days true 0.0 0%
Diane Chapple 9/10 3889 days true 0.0 0%
Chris Bulman 10/10 3963 days true 0.0 0%
Liliana Tello 9/10 4013 days 0.0 0%
linus 8/10 4078 days true 0.0 0%
ElleGermany 9/10 4184 days true 0.0 0%
Ger 9/10 4194 days true 0.0 0%
SteveB 10/10 4196 days true 0.0 0%
JuergenSchnitzer 10/10 4212 days true 0.0 0%
Lilly Tillman 2/10 4213 days 0.0 0%
Kitty 9/10 4213 days true 0.0 0%
Inger 8/10 4213 days true 0.0 0%
Stolz 10/10 4220 days true 0.0 0%
JetteG 10/10 4230 days true 0.0 0%
Inger Skov 8/10 4239 days true 0.0 0%
Edric Kwan 6/10 4240 days 0.0 0%
Raphael 9/10 4253 days true 0.0 0%
P&L Mooney 9/10 4371 days true 0.0 0%
Gorka Rojas 8/10 4469 days true 0.0 0%
Sanne 10/10 4589 days true 0.0 0%
Roger & Margaret 9/10 4610 days true 0.0 0%
Mel 8/10 4648 days true 0.0 0%
ranker_58 8/10 4798 days true 0.0 0%
Schranger 6/10 4933 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 Fox Glacier & Franz Josef Heliservices experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.18% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 70 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 200 days. Due to the seasonal nature of many businesses, this adjustment is applied dynamically throughout the year.

The Fox Glacier & Franz Josef Heliservices experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -3.14%
198 -3.15%
199 -3.17%
200 -3.18%
201 -3.20%
202 -3.22%
203 -3.23%

Final Ranking Score

92%

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.