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 Bularangi Harley Tours of New Zealand.

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

Bularangi Harley Tours of New Zealand

Valid Reviews

155 Valid Reviews

The Bularangi Harley Tours of New Zealand experience has a total of 155 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 155 valid reviews, the experience has 2 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 155 valid reviews:

Rating Count Percentage
10/10 137
88%
9/10 16
10%
8/10 2
1%
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%

98.71% Average

The raw data average (mean) for all the Bularangi Harley Tours of New Zealand valid reviews is 98.71% and is based on 155 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

98.90%

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
Werner Staab 10/10 1665 days 4.02 100%
Bruce B 10/10 1693 days 3.98 99%
barry aling 10/10 1693 days 3.98 99%
luiz montanari 10/10 1724 days 3.92 97%
EMMANUEL DIAS DA SILVA 10/10 1755 days 3.87 96%
Philip Gattey 9/10 1755 days 3.87 96%
Ch. Verling 10/10 1785 days 3.82 95%
Ulises Guevara 10/10 1785 days 3.82 95%
Dusty 10/10 1785 days 3.82 95%
Sandra Downie 10/10 2089 days 3.3 82%
Gisle Forseth 9/10 2120 days 3.24 81%
Asmawi Wahab 10/10 2395 days 2.77 69%
Shelli Leverty 10/10 2395 days 2.77 69%
Doug Hamerton 10/10 2395 days 2.77 69%
Becky Ivers 10/10 2423 days 2.73 68%
Mark Stanford 10/10 2423 days 2.73 68%
Lesley barber 10/10 2454 days 2.67 66%
Barryatkinson 10/10 2454 days 2.67 66%
DonKendra1 10/10 2546 days 2.52 63%
Bushy 10/10 2699 days 2.25 56%
Calypso 10/10 2729 days 2.2 55%
yromanec 10/10 2729 days 2.2 55%
ladyharley 10/10 2760 days 2.15 53%
ChrisW 10/10 2760 days 2.15 53%
oldbiker 10/10 2760 days 2.15 53%
TheHoon 10/10 2760 days 2.15 53%
Banana 10/10 2789 days 2.1 52%
monakeehn 10/10 2789 days 2.1 52%
fdjavid 10/10 2789 days 2.1 52%
websterau 9/10 2789 days 2.1 52%
Dumyati 10/10 2789 days 2.1 52%
holidaze28 10/10 2820 days 2.05 51%
michaelclout 10/10 2820 days 2.05 51%
ZeroID 10/10 2820 days 2.05 51%
donald 10/10 2820 days 2.05 51%
mulhooligan 10/10 2820 days 2.05 51%
Stanton 10/10 2820 days 2.05 51%
kakapo66 10/10 2851 days 1.99 50%
HughConnor 10/10 2851 days 1.99 50%
ruudie012 10/10 2851 days 1.99 50%
lynne_florence 10/10 2851 days 1.99 50%
johnnyr 10/10 2851 days 1.99 50%
pro213 10/10 2851 days 1.99 50%
chrissywatson1711 10/10 2851 days 1.99 50%
pahoia 10/10 2851 days 1.99 50%
Iand 10/10 2851 days 1.99 50%
jillowen 9/10 2851 days 1.99 50%
AbeB 10/10 2881 days 1.94 48%
mikereid 10/10 2881 days 1.94 48%
Cmax 10/10 2912 days 1.89 47%
gnh2011 9/10 2912 days 1.89 47%
taylaw 10/10 2912 days 1.89 47%
mariarivas 10/10 2912 days 1.89 47%
flippy0 10/10 2942 days 1.84 46%
squids12 10/10 3034 days 1.68 42%
Rosco 9/10 3095 days 1.58 39%
blahutp 9/10 3095 days 1.58 39%
mrkunz 10/10 3095 days 1.58 39%
clouddreamer 10/10 3095 days 1.58 39%
May 10/10 3095 days 1.58 39%
mitchaoc 10/10 3126 days 1.52 38%
Welshy01 10/10 3126 days 1.52 38%
pamc 10/10 3126 days 1.52 38%
zaphood 10/10 3126 days 1.52 38%
cruisequeens 10/10 3154 days 1.47 37%
adriennevergos 10/10 3154 days 1.47 37%
damondosterhus 10/10 3154 days 1.47 37%
janetc260 10/10 3154 days 1.47 37%
marpet 10/10 3185 days 1.42 35%
roofie 10/10 3185 days 1.42 35%
musicman 10/10 3185 days 1.42 35%
Merran 10/10 3185 days 1.42 35%
traceymarcus1 10/10 3185 days 1.42 35%
Budley1 10/10 3216 days 1.37 34%
vjr 10/10 3216 days 1.37 34%
DukeMatthews 10/10 3216 days 1.37 34%
hellsknipe356 10/10 3277 days 1.26 31%
KDStorey 10/10 3277 days 1.26 31%
robinson 10/10 3277 days 1.26 31%
JoeLeeKnipe 10/10 3277 days 1.26 31%
lstenhouse 10/10 3307 days 1.21 30%
doylouys 10/10 3338 days 1.16 29%
Jorgy 10/10 3369 days 1.11 27%
Phil Thurbon 9/10 3460 days 0.95 24%
awolnow 10/10 3491 days 0.9 22%
spb97 9/10 3491 days 0.9 22%
stealhorsecowboy 10/10 3491 days 0.9 22%
smithy55 9/10 3491 days 0.9 22%
fitbear 9/10 3491 days 0.9 22%
zebradiver 8/10 3491 days 0.85 21%
cowboyjohn 10/10 3519 days 0.85 21%
wahteh 10/10 3519 days 0.85 21%
tommarbru 10/10 3519 days 0.85 21%
Mathias 10/10 3519 days 0.85 21%
JParkinson 10/10 3519 days 0.85 21%
sinead drummy 10/10 3550 days 0.8 20%
philip andrew-artha 10/10 3550 days 0.8 20%
bmaier 10/10 3550 days 0.8 20%
alongthorn 10/10 3550 days 0.8 20%
KENMCD 10/10 3550 days 0.8 20%
kimreed 10/10 3581 days 0.74 18%
joshe051 10/10 3581 days 0.74 18%
Travelling_Kiwi 10/10 3581 days 0.74 18%
John Stevens 10/10 3611 days 0.69 17%
big_rog 10/10 3611 days 0.69 17%
HairyHaggis 10/10 3611 days 0.69 17%
Mary Long 10/10 3611 days 0.69 17%
stegall 10/10 3611 days 0.69 17%
Maureen Lee 10/10 3642 days 0.64 16%
monkey 10/10 3642 days 0.64 16%
renaud bonnet 10/10 3672 days 0.59 15%
George Wheatley 10/10 3795 days 0.38 9%
eunie 10/10 3825 days 0.33 8%
antoinette 10/10 3827 days 0.32 8%
Bananna 10/10 3836 days 0.31 8%
Anne Cathala 10/10 3838 days 0.3 8%
gordy838 9/10 3846 days 0.29 7%
Janet May 9/10 3850 days 0.28 7%
Chuffy57 10/10 3851 days 0.28 7%
Tom Speed 10/10 3856 days 0.27 7%
Brenda 10/10 3866 days 0.26 6%
Jay & N 10/10 3877 days true 0.24 6%
MoJo 10/10 3884 days 0.22 6%
Tomasz Trawniczek 10/10 3884 days 0.22 6%
David Lewis 9/10 3898 days 0.2 5%
andy Cant 10/10 3900 days 0.2 5%
Catherine Robinson 10/10 3902 days 0.19 5%
Samantha Fenton 10/10 3907 days 0.18 5%
Judy Macdonald 10/10 3911 days 0.18 4%
Allison 10/10 3911 days true 0.18 4%
Gordon Lawrence 10/10 3944 days 0.12 3%
ivkemp 10/10 3953 days 0.11 3%
shonell 10/10 3975 days 0.07 2%
Aimee Marsh 10/10 3976 days 0.07 2%
Kathy Reily 10/10 3980 days 0.06 1%
CaptainObvious 10/10 3988 days 0.05 1%
Darren Rye 10/10 3993 days 0.04 1%
Dolphin 10/10 3999 days 0.03 1%
Robin 10/10 4008 days 0.01 0%
suedavies 10/10 4009 days 0.01 0%
Claire O'Donoghue 10/10 4015 days 0.0 0%
Mike 10/10 4015 days 0.0 0%
barbara hunn 8/10 4020 days 0.0 0%
Mike Morgan 10/10 4021 days 0.0 0%
Matt Cross 10/10 4023 days 0.0 0%
Denelle Adams 10/10 4026 days 0.0 0%
Belinda Keys 10/10 4028 days 0.0 0%
Tom Gordon 9/10 4028 days 0.0 0%
ashos 10/10 4028 days 0.0 0%
hottie 9/10 4028 days 0.0 0%
Karen Gibson 10/10 4028 days 0.0 0%
Michelle Mulgrew 10/10 4036 days 0.0 0%
thehammer 10/10 4050 days 0.0 0%
Ele 10/10 4051 days 0.0 0%
Bridget Cummins 10/10 4057 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 Bularangi Harley Tours of New Zealand 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 Bularangi Harley Tours of New Zealand 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 Bularangi Harley Tours of New Zealand 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

95%

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.