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

96.65%

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
Val Mackie 10/10 1023 days 5.82 100%
steve cooper 10/10 1298 days 4.72 73%
Myles Henaghan 9/10 1298 days 4.72 73%
David Jones 9/10 1329 days 4.68 72%
lisa Mackay 10/10 1388 days 4.6 70%
Steve Barham 10/10 1388 days 4.6 70%
Karl Risch 10/10 1388 days 4.6 70%
James Mackenzie 9/10 1695 days 4.18 60%
Stu Thomas 10/10 1695 days 4.18 60%
Eric Sinton 10/10 1723 days 4.14 59%
Johannes Markus 9/10 1752 days true 4.92 78%
Peter Haarhaus 10/10 1754 days 4.1 58%
Tina Hejrskov 10/10 1754 days 4.1 58%
Lynette Ashby 10/10 1754 days 4.1 58%
Andy Campbell 8/10 1754 days 4.1 58%
Matt A 10/10 1754 days 4.1 58%
suzanne_b 9/10 1785 days 4.05 57%
simon_k 8/10 2060 days 3.68 48%
greg payne 9/10 2060 days 3.68 48%
Peter Trezise 10/10 2060 days 3.68 48%
Brian Walsh 9/10 2060 days 3.68 48%
Suzib23 10/10 2119 days 3.6 46%
Chris Rackham 10/10 2119 days 3.6 46%
Roger Richardson 10/10 2119 days 3.6 46%
grudels 10/10 2119 days 3.6 46%
Shane Armstrong 10/10 2119 days 3.6 46%
Fraser_Hurrell 10/10 2150 days 3.55 45%
lonetelemarker 10/10 2272 days 3.39 41%
JaredL 10/10 2394 days 3.22 37%
HyattBrowns 10/10 2394 days 3.22 37%
brahms 10/10 2425 days 3.18 36%
BrentWW 10/10 2425 days 3.18 36%
paul_thompson_nz 9/10 2425 days 3.18 36%
wthomson 9/10 2454 days 3.14 35%
greg 10/10 2454 days 3.14 35%
geoffgage 9/10 2454 days 3.14 35%
Adam Clatworthy 10/10 2791 days 2.68 24%
Frazer 10/10 2791 days 2.68 24%
Warwick_M 9/10 2791 days 2.68 24%
ziemkes 10/10 2819 days 2.64 23%
mark_elley 10/10 2850 days 2.6 22%
NickC 10/10 2850 days 2.6 22%
boycejw 10/10 2850 days 2.6 22%
OKRobbo 10/10 2850 days 2.6 22%
LOUIS485 10/10 2881 days 2.55 21%
Craig_Climo 10/10 3095 days 2.26 14%
Chris Renall 10/10 3125 days 2.22 13%
MedaryB 9/10 3125 days 2.22 13%
Jakped 10/10 3125 days 2.22 13%
JohnWOLFF 8/10 3125 days 2.22 13%
Christina Martin 10/10 3156 days 2.18 12%
Chris Shirley 10/10 3156 days 2.18 12%
Eric Sinton 10/10 3156 days 2.18 12%
noelburns 10/10 3156 days 2.18 12%
machonchon 10/10 3184 days 2.14 11%
pbutterworth 10/10 3184 days 2.14 11%
hendrik gottschalk 10/10 3215 days 2.1 10%
Gareth Ayre 10/10 3215 days 2.1 10%
gemmav 9/10 3230 days true 2.49 20%
brampa 10/10 3307 days 1.97 7%
Stiernacken 10/10 3460 days 1.76 2%
Goodman 9/10 3460 days 1.76 2%
Jim_001 10/10 3501 days true 2.04 9%
Childers 10/10 3502 days 1.7 1%
hauraki 10/10 3505 days 1.7 1%
johnhargs30 9/10 3521 days 1.68 0%
Kate Bilham 10/10 3521 days 1.68 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

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.