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 Tongariro Expeditions.

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

Tongariro Expeditions

Valid Reviews

40 Valid Reviews

The Tongariro Expeditions experience has a total of 40 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 40 valid reviews:

Rating Count Percentage
10/10 14
35%
9/10 10
25%
8/10 9
23%
7/10 1
3%
6/10 2
5%
5/10 1
3%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 3
8%

82.25% Average

The raw data average (mean) for all the Tongariro Expeditions valid reviews is 82.25% and is based on 40 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

34 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 40 valid reviews, the experience has 34 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 34 face-to-face reviews:

Rating Count Percentage
10/10 12
35%
9/10 10
29%
8/10 8
24%
7/10 1
3%
6/10 2
6%
5/10 1
3%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

87.65% Average

The raw data average (mean) for all the Tongariro Expeditions face-to-face reviews is 87.65% and is based on 34 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

91.87%

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
Anna Lerchl 10/10 1692 days true 3.83 100%
Teri Ko 10/10 2274 days 2.69 70%
Simon Mehlmann 9/10 2404 days true 2.44 64%
Bradley 8/10 3231 days true 0.78 20%
Pietsch 8/10 3252 days true 0.74 19%
Julieth_Peter 1/10 3492 days 0.23 6%
Michel Op't Landt 9/10 3529 days true 0.24 6%
bridge 1/10 3551 days 0.14 4%
John N 10/10 3882 days true 0.0 0%
Susan & Richard 9/10 3891 days true 0.0 0%
Marie Hinze 1/10 3978 days 0.0 0%
Gensen 8/10 4004 days true 0.0 0%
UlaR 9/10 4214 days true 0.0 0%
Sally477 8/10 4223 days 0.0 0%
Kim 8/10 4226 days true 0.0 0%
Elke 10/10 4344 days true 0.0 0%
Jacinta 9/10 4352 days true 0.0 0%
Richard 10/10 4401 days true 0.0 0%
Mike Dudey 9/10 4504 days true 0.0 0%
Stephanie 10/10 4557 days 0.0 0%
Hernando 5/10 4598 days true 0.0 0%
Corinne 6/10 4606 days true 0.0 0%
Hanna 9/10 4635 days true 0.0 0%
Camille 9/10 4635 days true 0.0 0%
Jenny Hulsebosch 6/10 4650 days true 0.0 0%
Debbie 8/10 4658 days true 0.0 0%
Laura Sutton 9/10 4662 days true 0.0 0%
Stephanie 9/10 4663 days true 0.0 0%
Orla 8/10 4712 days true 0.0 0%
Sarah 10/10 4959 days true 0.0 0%
Hilary 10/10 4959 days true 0.0 0%
AnnaOwen 10/10 4977 days true 0.0 0%
SimonHodge 10/10 4978 days true 0.0 0%
GillianW 10/10 4978 days true 0.0 0%
MariaNorman 10/10 4978 days true 0.0 0%
JonathanBayle 7/10 4978 days true 0.0 0%
Helena 10/10 4978 days true 0.0 0%
MarcHarris 8/10 4978 days true 0.0 0%
Fiona 10/10 4998 days true 0.0 0%
Twan 8/10 4998 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 Tongariro Expeditions experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-3.71% Adjustment

There may be an adjustment if this experience hasn't received any reviews within the last 55 days. However the Tongariro Expeditions 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 Tongariro Expeditions experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -3.66%
198 -3.67%
199 -3.69%
200 -3.71%
201 -3.73%
202 -3.75%
203 -3.77%

Final Ranking Score

88%

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.