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

96.33%

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
Val Mackie 10/10 1487 days 4.23 100%
steve cooper 10/10 1762 days 3.69 87%
Myles Henaghan 9/10 1762 days 3.69 87%
David Jones 9/10 1793 days 3.63 86%
lisa Mackay 10/10 1852 days 3.52 83%
Steve Barham 10/10 1852 days 3.52 83%
Karl Risch 10/10 1852 days 3.52 83%
James Mackenzie 9/10 2158 days 2.92 69%
Stu Thomas 10/10 2158 days 2.92 69%
Eric Sinton 10/10 2186 days 2.86 68%
Johannes Markus 9/10 2215 days true 2.81 66%
Peter Haarhaus 10/10 2217 days 2.8 66%
Tina Hejrskov 10/10 2217 days 2.8 66%
Lynette Ashby 10/10 2217 days 2.8 66%
Andy Campbell 8/10 2217 days 2.66 63%
Matt A 10/10 2217 days 2.8 66%
suzanne_b 9/10 2248 days 2.74 65%
simon_k 8/10 2523 days 2.1 49%
greg payne 9/10 2523 days 2.21 52%
Peter Trezise 10/10 2523 days 2.21 52%
Brian Walsh 9/10 2523 days 2.21 52%
Suzib23 10/10 2582 days 2.09 49%
Chris Rackham 10/10 2582 days 2.09 49%
Roger Richardson 10/10 2582 days 2.09 49%
grudels 10/10 2582 days 2.09 49%
Shane Armstrong 10/10 2582 days 2.09 49%
Fraser_Hurrell 10/10 2613 days 2.03 48%
lonetelemarker 10/10 2735 days 1.79 42%
JaredL 10/10 2857 days 1.55 37%
HyattBrowns 10/10 2857 days 1.55 37%
brahms 10/10 2888 days 1.49 35%
BrentWW 10/10 2888 days 1.49 35%
paul_thompson_nz 9/10 2888 days 1.49 35%
wthomson 9/10 2917 days 1.43 34%
greg 10/10 2917 days 1.43 34%
geoffgage 9/10 2917 days 1.43 34%
Adam Clatworthy 10/10 3254 days 0.77 18%
Frazer 10/10 3254 days 0.77 18%
Warwick_M 9/10 3254 days 0.77 18%
ziemkes 10/10 3282 days 0.72 17%
mark_elley 10/10 3313 days 0.66 16%
NickC 10/10 3313 days 0.66 16%
boycejw 10/10 3313 days 0.66 16%
OKRobbo 10/10 3313 days 0.66 16%
LOUIS485 10/10 3344 days 0.6 14%
Craig_Climo 10/10 3558 days 0.18 4%
Chris Renall 10/10 3588 days 0.12 3%
MedaryB 9/10 3588 days 0.12 3%
Jakped 10/10 3588 days 0.12 3%
JohnWOLFF 8/10 3588 days 0.12 3%
Christina Martin 10/10 3619 days 0.06 1%
Chris Shirley 10/10 3619 days 0.06 1%
Eric Sinton 10/10 3619 days 0.06 1%
noelburns 10/10 3619 days 0.06 1%
machonchon 10/10 3647 days 0.01 0%
pbutterworth 10/10 3647 days 0.01 0%
hendrik gottschalk 10/10 3678 days 0.0 0%
Gareth Ayre 10/10 3678 days 0.0 0%
gemmav 9/10 3693 days true 0.0 0%
brampa 10/10 3770 days 0.0 0%
Stiernacken 10/10 3923 days 0.0 0%
Goodman 9/10 3923 days 0.0 0%
Jim_001 10/10 3965 days true 0.0 0%
Childers 10/10 3966 days 0.0 0%
hauraki 10/10 3968 days 0.0 0%
johnhargs30 9/10 3984 days 0.0 0%
Kate Bilham 10/10 3984 days 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 CharterLink experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.98% 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 199 days.

The CharterLink experience has been adjusted for 199 days. Adjustments are according to the following table.

Days Adjustment
196 -3.92%
197 -3.94%
198 -3.96%
199 -3.98%
200 -4.00%
201 -4.02%
202 -4.04%

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.