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 Europcar Car Rental Auckland Airport.

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

Europcar Car Rental Auckland Airport

Valid Reviews

32 Valid Reviews

The Europcar Car Rental Auckland Airport experience has a total of 34 reviews. There are 32 valid reviews that are included when calculating the ranking score and 2 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 32 valid reviews:

Rating Count Percentage
10/10 2
6%
9/10 3
9%
8/10 10
31%
7/10 0
0%
6/10 0
0%
5/10 0
0%
4/10 0
0%
3/10 1
3%
2/10 1
3%
1/10 15
47%

45.94% Average

The raw data average (mean) for all the Europcar Car Rental Auckland Airport valid reviews is 45.94% and is based on 32 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

14 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 32 valid reviews, the experience has 14 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 14 face-to-face reviews:

Rating Count Percentage
10/10 1
7%
9/10 3
21%
8/10 10
71%
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%

83.57% Average

The raw data average (mean) for all the Europcar Car Rental Auckland Airport face-to-face reviews is 83.57% and is based on 14 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

11.60%

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
Flo 1/10 111 days 71.57 100%
CHENU CHRISTIAN 1/10 294 days 63.0 88%
Jane 1/10 324 days 60.86 85%
Mark 1/10 447 days 49.89 70%
Tracey Cook 1/10 447 days 49.89 70%
Peter Neuschild 1/10 447 days 49.89 70%
Cam 1/10 477 days 46.68 65%
Shelley Lock 1/10 508 days 43.15 60%
M Bear 1/10 659 days 25.64 36%
Very annoyed 1/10 689 days 22.72 32%
PLJ 1/10 689 days 22.72 32%
Johan overbeeke jp 1/10 873 days 9.35 13%
Annie 3/10 903 days 8.35 12%
Julie Duvert 10/10 1658 days true 3.9 5%
Paul Thompson 10/10 2088 days 3.06 4%
Debbie Turner 1/10 2485 days 1.66 2%
Andrew Southerton 1/10 2607 days 1.49 2%
Sydneykiwi 1/10 2972 days 0.97 1%
Jop Veldhuis 8/10 3140 days true 0.95 1%
Ben Miklozek 9/10 3884 days true 0.0 0%
Marianne Lovdal 8/10 3884 days true 0.0 0%
Arran J 2/10 3946 days 0.0 0%
Katie 9/10 4240 days true 0.0 0%
Kerim 8/10 4256 days true 0.0 0%
Jacob 9/10 4573 days true 0.0 0%
Alan Bellerby 8/10 4576 days true 0.0 0%
Steven 8/10 4587 days true 0.0 0%
Marc Hertogs 8/10 4606 days true 0.0 0%
Zurcher Marco 8/10 4617 days true 0.0 0%
Alba 8/10 4632 days true 0.0 0%
Falk Seidel 8/10 4633 days true 0.0 0%
Bronwyn Gaby 8/10 4636 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 Europcar Car Rental Auckland Airport experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-4.30% Adjustment

Recent reviews reflect the experience as it currently operates. This means it's important to get fresh reviews. Some experiences discovered they could get a few good reviews and then, resting on their laurels, discourage any further reviews. This adjustment stimulates experiences to be positively involved in the review generating process and discourages them from manipulating the ranking system in this manner.

What constitutes a recent review is based on the how old it is, what type of experience it is applied to and and what time of year it currently is. Due to the seasonal nature of many businesses, what is considered recent is dynamically adjusted throughout the year.

There may be an adjustment if this experience hasn't received enough reviews within the last 74 days. The Europcar Car Rental Auckland Airport experience has 0 recent rankings. Adjustments are according to the following table:

Recent Reviews Adjustment
0 -3.00%
1 -2.83%
2 -2.33%
3 -1.50%
4 -0.67%
5 -0.17%
6 -0.00%

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 Europcar Car Rental Auckland Airport experience has been adjusted for 85 days. Adjustments are according to the following table.

Days Adjustment
82 -1.25%
83 -1.27%
84 -1.28%
85 -1.30%
86 -1.31%
87 -1.33%
88 -1.34%

Final Ranking Score

7%

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.