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

91.25%

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 10/10 581 days 46.87 100%
Nigel Jarvis 10/10 642 days 37.52 80%
Janneke van Krieken 8/10 975 days true 6.92 15%
William Milligan-Manby 10/10 1115 days 4.96 11%
dan dalgleish 10/10 1221 days 4.75 10%
Melanie Farrell 9/10 1230 days true 4.74 10%
Charlotte 8/10 1257 days 4.45 9%
Vicki Robey 8/10 1321 days true 4.33 9%
Michal Za'heryuk 9/10 1341 days true 4.52 10%
Veronika Za'heryuk 9/10 1341 days true 4.52 10%
Thomas Nolwenn 9/10 1346 days true 4.51 10%
Manibod Vannaphone 10/10 1583 days true 4.05 9%
Luca Staudt 7/10 1586 days true 3.68 8%
Nancy Logan 8/10 1590 days true 3.83 8%
Friederike East 9/10 1611 days true 3.99 9%
Sabine Bergen 8/10 1628 days true 3.76 8%
Ken 5/10 1942 days true 2.71 6%
Fanny DeBon 7/10 2040 days true 2.87 6%
Ian Garner 9/10 2330 days true 2.58 6%
Laurene 5/10 2337 days true 2.08 4%
Guillaume 6/10 2341 days true 2.13 5%
Sarah Horn 9/10 2670 days true 1.92 4%
Sebastian Russell-Smits 10/10 2670 days true 1.92 4%
Leo 9/10 2776 days true 1.71 4%
Reinhard Stahl 10/10 2777 days true 1.71 4%
Reinhard Stahl 10/10 2777 days true 1.71 4%
Liz Marquart Scholtz 8/10 2783 days true 1.61 3%
Kerstin 9/10 2787 days true 1.69 4%
KDS_Holiday 10/10 2833 days 1.6 3%
Mark Westebring 7/10 3034 days true 1.1 2%
ToGy 1/10 3047 days 0.86 2%
Barry Baily 9/10 3060 days true 1.15 2%
Charlotte 9/10 3062 days true 1.15 2%
John Reynolds 10/10 3071 days true 1.13 2%
Ellen Jacobs 5/10 3074 days true 0.91 2%
Peter, Noelle & Susanne 6/10 3141 days true 0.83 2%
damaca 7/10 3199 days 0.8 2%
Oliver Berg 7/10 3396 days true 0.45 1%
Boi Sagarra 6/10 3396 days true 0.41 1%
Chris Ashton 8/10 3407 days true 0.45 1%
Edgar & Marilyn Berry 10/10 3409 days true 0.47 1%
John Taylor 10/10 3412 days true 0.47 1%
Ann Parry 9/10 3417 days true 0.46 1%
Peter 9/10 3418 days true 0.45 1%
David 9/10 3431 days true 0.43 1%
Rossiter 7/10 3434 days true 0.38 1%
Rosey834 8/10 3503 days 0.27 1%
Hans 8/10 3768 days true 0.0 0%
Michael Egli 9/10 3769 days true 0.0 0%
Aaron 5/10 3788 days true 0.0 0%
Mieke Knoops 7/10 3788 days true 0.0 0%
Tonny 8/10 3805 days true 0.0 0%
snodge 5/10 3806 days 0.0 0%
uleugel 8/10 3815 days true 0.0 0%
Len Daniell 9/10 3820 days true 0.0 0%
kevinp 7/10 3849 days true 0.0 0%
Anita de Boer 8/10 3870 days true 0.0 0%
Karin Linder 9/10 3872 days true 0.0 0%
richardh 8/10 3993 days true 0.0 0%
Christine Dadd 4/10 4100 days true 0.0 0%
MorganK 8/10 4104 days true 0.0 0%
arthurwa 10/10 4112 days true 0.0 0%
Robert 5/10 4135 days true 0.0 0%
KeziaB 9/10 4145 days true 0.0 0%
EleanorL 7/10 4145 days true 0.0 0%
VickiS 7/10 4145 days true 0.0 0%
Ian S 8/10 4161 days true 0.0 0%
MartinD 8/10 4170 days true 0.0 0%
straw64 8/10 4171 days 0.0 0%
Mark 3/10 4184 days true 0.0 0%
Debbie Mossman 8/10 4187 days 0.0 0%
Miranda 8/10 4189 days true 0.0 0%
Kern 7/10 4197 days true 0.0 0%
Sandra 8/10 4225 days true 0.0 0%
bobmcg 9/10 4225 days 0.0 0%
Bert 8/10 4230 days true 0.0 0%
Robin 8/10 4302 days true 0.0 0%
Annabelle 10/10 4321 days 0.0 0%
Heckter 9/10 4483 days true 0.0 0%
Amy Clark 10/10 4483 days true 0.0 0%
Claire 8/10 4498 days true 0.0 0%
Roger and Heather Smith 10/10 4517 days true 0.0 0%
Ondrej Kacena 10/10 4523 days true 0.0 0%
Roger & Margaret 9/10 4526 days true 0.0 0%
purplekat99 9/10 4568 days 0.0 0%
AndiJorgensen 5/10 4835 days true 0.0 0%
Rietveld 8/10 4870 days true 0.0 0%
Pope 9/10 4889 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

-2.02% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 124 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 -1.99%
198 -2.00%
199 -2.01%
200 -2.02%
201 -2.03%
202 -2.04%
203 -2.05%

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.