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 CharterLink.

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

CharterLink

Valid Reviews

67 Valid Reviews

The CharterLink experience has a total of 67 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.

Within these 67 valid reviews, the experience has 3 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 67 valid reviews:

Rating Count Percentage
10/10 49
73%
9/10 15
22%
8/10 3
4%
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%

96.87% Average

The raw data average (mean) for all the CharterLink valid reviews is 96.87% and is based on 67 valid reviews. This value is not used to calculate the ranking score and it only provided here as a comparison to the weighted average.

Weighted Average

96.86%

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
Val Mackie 10/10 782 days 100%
steve cooper 10/10 1057 days 17%
Myles Henaghan 9/10 1057 days 17%
David Jones 9/10 1088 days 16%
lisa Mackay 10/10 1147 days 16%
Steve Barham 10/10 1147 days 16%
Karl Risch 10/10 1147 days 16%
James Mackenzie 9/10 1454 days 14%
Stu Thomas 10/10 1454 days 14%
Eric Sinton 10/10 1482 days 13%
Johannes Markus 9/10 1511 days 18%
Peter Haarhaus 10/10 1513 days 13%
Tina Hejrskov 10/10 1513 days 13%
Lynette Ashby 10/10 1513 days 13%
Andy Campbell 8/10 1513 days 13%
Matt A 10/10 1513 days 13%
suzanne_b 9/10 1544 days 13%
simon_k 8/10 1819 days 11%
greg payne 9/10 1819 days 11%
Peter Trezise 10/10 1819 days 11%
Brian Walsh 9/10 1819 days 11%
Suzib23 10/10 1878 days 10%
Chris Rackham 10/10 1878 days 10%
Roger Richardson 10/10 1878 days 10%
grudels 10/10 1878 days 10%
Shane Armstrong 10/10 1878 days 10%
Fraser_Hurrell 10/10 1909 days 10%
lonetelemarker 10/10 2030 days 9%
JaredL 10/10 2153 days 8%
HyattBrowns 10/10 2153 days 8%
brahms 10/10 2184 days 8%
BrentWW 10/10 2184 days 8%
paul_thompson_nz 9/10 2184 days 8%
wthomson 9/10 2213 days 8%
greg 10/10 2213 days 8%
geoffgage 9/10 2213 days 8%
Adam Clatworthy 10/10 2550 days 5%
Frazer 10/10 2550 days 5%
Warwick_M 9/10 2550 days 5%
ziemkes 10/10 2578 days 5%
mark_elley 10/10 2609 days 5%
NickC 10/10 2609 days 5%
boycejw 10/10 2609 days 5%
OKRobbo 10/10 2609 days 5%
LOUIS485 10/10 2640 days 5%
Craig_Climo 10/10 2853 days 3%
Chris Renall 10/10 2884 days 3%
MedaryB 9/10 2884 days 3%
Jakped 10/10 2884 days 3%
JohnWOLFF 8/10 2884 days 3%
Christina Martin 10/10 2915 days 3%
Chris Shirley 10/10 2915 days 3%
Eric Sinton 10/10 2915 days 3%
noelburns 10/10 2915 days 3%
machonchon 10/10 2943 days 2%
pbutterworth 10/10 2943 days 2%
hendrik gottschalk 10/10 2974 days 2%
Gareth Ayre 10/10 2974 days 2%
gemmav 9/10 2989 days 5%
brampa 10/10 3066 days 2%
Stiernacken 10/10 3218 days 0%
Goodman 9/10 3218 days 0%
Jim_001 10/10 3260 days 2%
Childers 10/10 3261 days 0%
hauraki 10/10 3263 days 0%
johnhargs30 9/10 3280 days 0%
Kate Bilham 10/10 3280 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 CharterLink experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-7.28% Adjustment

There may be an adjustment if an experience hasn't received any reviews within the last 60 days. However the CharterLink 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 CharterLink experience has been adjusted for 364 days. Adjustments are according to the following table.

Days Adjustment
361 -7.22%
362 -7.24%
363 -7.26%
364 -7.28%
365 -7.30%
366 -7.32%
367 -7.34%

Final Ranking Score

90%

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.