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 Waitangi Treaty Grounds.

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

Waitangi Treaty Grounds

Valid Reviews

88 Valid Reviews

The Waitangi Treaty Grounds experience has a total of 88 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 88 valid reviews:

Rating Count Percentage
10/10 17
19%
9/10 23
26%
8/10 24
27%
7/10 11
13%
6/10 3
3%
5/10 7
8%
4/10 1
1%
3/10 1
1%
2/10 0
0%
1/10 1
1%

80.34% Average

The raw data average (mean) for all the Waitangi Treaty Grounds valid reviews is 80.34% and is based on 88 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

73 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 88 valid reviews, the experience has 73 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 73 face-to-face reviews:

Rating Count Percentage
10/10 11
15%
9/10 21
29%
8/10 20
27%
7/10 10
14%
6/10 3
4%
5/10 6
8%
4/10 1
1%
3/10 1
1%
2/10 0
0%
1/10 0
0%

80.00% Average

The raw data average (mean) for all the Waitangi Treaty Grounds face-to-face reviews is 80.00% and is based on 73 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

91.47%

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
Penny Bullock 10/10 554 days 51.38 100%
Nigel Jarvis 10/10 615 days 41.51 81%
Janneke van Krieken 8/10 948 days true 8.0 16%
William Milligan-Manby 10/10 1088 days 5.01 10%
dan dalgleish 10/10 1194 days 4.81 9%
Melanie Farrell 9/10 1203 days true 4.79 9%
Charlotte 8/10 1230 days 4.5 9%
Vicki Robey 8/10 1294 days true 4.38 9%
Michal Za'heryuk 9/10 1314 days true 4.57 9%
Veronika Za'heryuk 9/10 1314 days true 4.57 9%
Thomas Nolwenn 9/10 1319 days true 4.56 9%
Manibod Vannaphone 10/10 1556 days true 4.1 8%
Luca Staudt 7/10 1559 days true 3.72 7%
Nancy Logan 8/10 1563 days true 3.88 8%
Friederike East 9/10 1584 days true 4.04 8%
Sabine Bergen 8/10 1601 days true 3.81 7%
Ken 5/10 1915 days true 2.75 5%
Fanny DeBon 7/10 2013 days true 2.92 6%
Ian Garner 9/10 2303 days true 2.64 5%
Laurene 5/10 2310 days true 2.12 4%
Guillaume 6/10 2314 days true 2.17 4%
Sarah Horn 9/10 2643 days true 1.97 4%
Sebastian Russell-Smits 10/10 2643 days true 1.97 4%
Leo 9/10 2749 days true 1.76 3%
Reinhard Stahl 10/10 2750 days true 1.76 3%
Reinhard Stahl 10/10 2750 days true 1.76 3%
Liz Marquart Scholtz 8/10 2756 days true 1.66 3%
Kerstin 9/10 2760 days true 1.74 3%
KDS_Holiday 10/10 2806 days 1.65 3%
Mark Westebring 7/10 3007 days true 1.15 2%
ToGy 1/10 3020 days 0.9 2%
Barry Baily 9/10 3033 days true 1.21 2%
Charlotte 9/10 3035 days true 1.2 2%
John Reynolds 10/10 3044 days true 1.19 2%
Ellen Jacobs 5/10 3047 days true 0.96 2%
Peter, Noelle & Susanne 6/10 3114 days true 0.87 2%
damaca 7/10 3172 days 0.85 2%
Oliver Berg 7/10 3369 days true 0.5 1%
Boi Sagarra 6/10 3369 days true 0.46 1%
Chris Ashton 8/10 3380 days true 0.5 1%
Edgar & Marilyn Berry 10/10 3382 days true 0.52 1%
John Taylor 10/10 3385 days true 0.52 1%
Ann Parry 9/10 3390 days true 0.51 1%
Peter 9/10 3391 days true 0.51 1%
David 9/10 3404 days true 0.48 1%
Rossiter 7/10 3407 days true 0.43 1%
Rosey834 8/10 3476 days 0.32 1%
Hans 8/10 3741 days true 0.0 0%
Michael Egli 9/10 3742 days true 0.0 0%
Aaron 5/10 3761 days true 0.0 0%
Mieke Knoops 7/10 3761 days true 0.0 0%
Tonny 8/10 3778 days true 0.0 0%
snodge 5/10 3779 days 0.0 0%
uleugel 8/10 3788 days true 0.0 0%
Len Daniell 9/10 3793 days true 0.0 0%
kevinp 7/10 3822 days true 0.0 0%
Anita de Boer 8/10 3843 days true 0.0 0%
Karin Linder 9/10 3845 days true 0.0 0%
richardh 8/10 3966 days true 0.0 0%
Christine Dadd 4/10 4073 days true 0.0 0%
MorganK 8/10 4077 days true 0.0 0%
arthurwa 10/10 4085 days true 0.0 0%
Robert 5/10 4109 days true 0.0 0%
KeziaB 9/10 4118 days true 0.0 0%
EleanorL 7/10 4118 days true 0.0 0%
VickiS 7/10 4118 days true 0.0 0%
Ian S 8/10 4135 days true 0.0 0%
MartinD 8/10 4143 days true 0.0 0%
straw64 8/10 4144 days 0.0 0%
Mark 3/10 4157 days true 0.0 0%
Debbie Mossman 8/10 4160 days 0.0 0%
Miranda 8/10 4162 days true 0.0 0%
Kern 7/10 4170 days true 0.0 0%
Sandra 8/10 4198 days true 0.0 0%
bobmcg 9/10 4198 days 0.0 0%
Bert 8/10 4203 days true 0.0 0%
Robin 8/10 4276 days true 0.0 0%
Annabelle 10/10 4295 days 0.0 0%
Heckter 9/10 4456 days true 0.0 0%
Amy Clark 10/10 4456 days true 0.0 0%
Claire 8/10 4471 days true 0.0 0%
Roger and Heather Smith 10/10 4490 days true 0.0 0%
Ondrej Kacena 10/10 4496 days true 0.0 0%
Roger & Margaret 9/10 4499 days true 0.0 0%
purplekat99 9/10 4541 days 0.0 0%
AndiJorgensen 5/10 4808 days true 0.0 0%
Rietveld 8/10 4843 days true 0.0 0%
Pope 9/10 4862 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 Waitangi Treaty Grounds experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-2.33% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 111 days. However the Waitangi Treaty Grounds 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 Waitangi Treaty Grounds experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -2.29%
198 -2.30%
199 -2.32%
200 -2.33%
201 -2.34%
202 -2.35%
203 -2.36%

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.