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 Avis Rental Cars.

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

Avis Rental Cars

Valid Reviews

48 Valid Reviews

The Avis Rental Cars experience has a total of 49 reviews. There are 48 valid reviews that are included when calculating the ranking score and 1 invalid review 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 48 valid reviews:

Rating Count Percentage
10/10 3
6%
9/10 6
13%
8/10 10
21%
7/10 3
6%
6/10 1
2%
5/10 1
2%
4/10 1
2%
3/10 0
0%
2/10 2
4%
1/10 21
44%

46.88% Average

The raw data average (mean) for all the Avis Rental Cars valid reviews is 46.88% and is based on 48 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

24 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 48 valid reviews, the experience has 24 face-to-face reviews collected during interviews by our team.

Below is the distribution of ratings for the 24 face-to-face reviews:

Rating Count Percentage
10/10 3
13%
9/10 6
25%
8/10 10
42%
7/10 3
13%
6/10 1
4%
5/10 1
4%
4/10 0
0%
3/10 0
0%
2/10 0
0%
1/10 0
0%

81.67% Average

The raw data average (mean) for all the Avis Rental Cars face-to-face reviews is 81.67% and is based on 24 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.

Weighted Average

15.09%

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 Relative Weight
Michelle 1/10 362 days 100%
Barry Lynch 1/10 393 days 95%
John Matthews 1/10 424 days 90%
Nathan 1/10 607 days 54%
Timothy OConnor 1/10 727 days 33%
James Mallen 1/10 758 days 29%
Celeste 1/10 758 days 29%
Ryan 1/10 789 days 25%
melvyn begley 1/10 1003 days 8%
Jennifer Rogers 1/10 1033 days 7%
Izzy 1/10 1064 days 6%
Campbell Brebner 1/10 1154 days 6%
Chris Monk 2/10 1154 days 6%
Janine 1/10 1307 days 6%
Trevor Robertson 1/10 1398 days 6%
Janelle Mcaliece 1/10 1398 days 6%
Kate Campbell 1/10 1429 days 5%
Jim Skeath 1/10 1488 days 5%
Mike Mulberry 1/10 1610 days 5%
Tim Evans 4/10 1672 days 5%
Cecile 6/10 1850 days 5%
Jadon Calvert 1/10 1854 days 4%
H Conway 1/10 2553 days 3%
Indu Priya 1/10 2949 days 2%
Oliver Kalmbach 8/10 2989 days 2%
firsttimeparents 2/10 3071 days 1%
Birds Tubbs 10/10 3240 days 1%
Peter Kent 9/10 3242 days 1%
Claus Lage 7/10 3614 days 0%
Helene Descamps 8/10 3637 days 0%
James Jackson 8/10 3639 days 0%
Christian 10/10 4006 days 2%
andres 7/10 4068 days 2%
Colin S 9/10 4084 days 2%
Deede K 8/10 4084 days 2%
Ruth Colmer 8/10 4086 days 2%
Hansjoerg Ehrmann 8/10 4087 days 2%
Gebert 9/10 4087 days 2%
JanetH 8/10 4368 days 2%
Ray 8/10 4706 days 2%
Jacinta 8/10 4711 days 2%
Anne and Derek 8/10 4712 days 2%
David Buckley 9/10 4720 days 2%
Carmen 10/10 4721 days 2%
Bill Lambert 7/10 4736 days 2%
Leon 9/10 4756 days 2%
Meiki 5/10 4767 days 1%
Dagmar 9/10 4768 days 2%

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 Avis Rental Cars experience has plenty of reviews and does not meet the criteria for any adjustment.

Recent Reviews Adjustment

-7.13% 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 49 days. The Avis Rental Cars 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 Avis Rental Cars experience has been adjusted for 200 days. Adjustments are according to the following table.

Days Adjustment
197 -4.07%
198 -4.09%
199 -4.11%
200 -4.13%
201 -4.15%
202 -4.17%
203 -4.19%

Final Ranking Score

8%

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.