Kia ora, 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 Budget Rent a Car.
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.
Budget Rent a Car
Valid Reviews
55 Valid Reviews
The Budget Rent a Car experience has a total of 64 reviews. There are 55 valid reviews that are included when calculating the ranking score and 9 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 55 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 4 |
|
7% |
| 9/10 | 7 |
|
13% |
| 8/10 | 5 |
|
9% |
| 7/10 | 1 |
|
2% |
| 6/10 | 1 |
|
2% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 1 |
|
2% |
| 2/10 | 2 |
|
4% |
| 1/10 | 34 |
|
62% |
35.82% Average
The raw data average (mean) for all the Budget Rent a Car valid reviews is 35.82% and is based on 55 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
16 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 55 valid reviews, the experience has 16 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 16 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 3 |
|
19% |
| 9/10 | 5 |
|
31% |
| 8/10 | 5 |
|
31% |
| 7/10 | 1 |
|
6% |
| 6/10 | 1 |
|
6% |
| 5/10 | 0 |
|
0% |
| 4/10 | 0 |
|
0% |
| 3/10 | 1 |
|
6% |
| 2/10 | 0 |
|
0% |
| 1/10 | 0 |
|
0% |
81.88% Average
The raw data average (mean) for all the Budget Rent a Car face-to-face reviews is 81.88% and is based on 16 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
12.92%
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 |
|---|---|---|---|
| Jimmy Davison | 1/10 | 33 days | 100% |
| Rose | 1/10 | 369 days | 92% |
| Scott McMillan | 1/10 | 612 days | 78% |
| Jacques Michel | 1/10 | 671 days | 74% |
| Peter Fox | 1/10 | 764 days | 66% |
| Heath Mc | 1/10 | 795 days | 64% |
| Dan | 1/10 | 825 days | 61% |
| .. | 1/10 | 825 days | 61% |
| Annie | 1/10 | 825 days | 61% |
| Wendy Taranaki | 1/10 | 856 days | 58% |
| JR | 1/10 | 856 days | 58% |
| Taahia | 1/10 | 917 days | 52% |
| Peggy | 1/10 | 1433 days | 13% |
| David Allnatt | 1/10 | 1433 days | 13% |
| Vivienne Ball | 1/10 | 1860 days | 4% |
| Vivienne Ball | 1/10 | 1860 days | 4% |
| Ahmad Issa | 1/10 | 1891 days | 4% |
| Julie | 1/10 | 2044 days | 4% |
| Portelli | 1/10 | 2105 days | 3% |
| Philip Street | 1/10 | 2133 days | 3% |
| Alex | 1/10 | 2225 days | 3% |
| Jagienka | 1/10 | 2225 days | 3% |
| Colette Brick | 1/10 | 2256 days | 3% |
| Manu | 1/10 | 2470 days | 3% |
| jude1123 | 1/10 | 2681 days | 2% |
| Tom Endean | 1/10 | 2893 days | 2% |
| Kevin N | 1/10 | 2924 days | 2% |
| Piyush Thukral | 1/10 | 3046 days | 2% |
| Masy Astley | 1/10 | 3199 days | 1% |
| E T | 1/10 | 3504 days | 1% |
| YYY | 2/10 | 3565 days | 1% |
| Christina Borthwick | 1/10 | 3624 days | 0% |
| Tom Tazzer | 2/10 | 3624 days | 1% |
| Sherry Huang | 1/10 | 3625 days | 0% |
| Kevin Dmello | 1/10 | 3778 days | 0% |
| JoMary Smith | 9/10 | 3959 days | 1% |
| Samplonius | 9/10 | 4685 days | 1% |
| smac | 10/10 | 4690 days | 1% |
| Paul Nickson | 10/10 | 5019 days | 1% |
| Shacks | 1/10 | 5178 days | 0% |
| wanro185 | 9/10 | 5300 days | 1% |
| Bart en Mirjam | 8/10 | 5494 days | 1% |
| LuukKarin | 8/10 | 5728 days | 1% |
| Anna Hansson | 10/10 | 5743 days | 1% |
| Anna Hansson | 10/10 | 5743 days | 1% |
| Sara Hansson | 9/10 | 5743 days | 1% |
| JohannaB | 3/10 | 5745 days | 0% |
| BenjaminAustralia | 7/10 | 5816 days | 1% |
| Ursula | 6/10 | 5856 days | 1% |
| NeeleO | 8/10 | 5877 days | 1% |
| Susan | 8/10 | 5903 days | 1% |
| Howard | 8/10 | 5921 days | 1% |
| Jim Curley | 9/10 | 6138 days | 1% |
| Gav | 9/10 | 6173 days | 1% |
| Simon | 9/10 | 6456 days | 1% |
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 Budget Rent a Car experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-2.93% 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 42 days. The Budget Rent a Car experience has 1 recent ranking. Adjustments are according to the following table:
| Recent Reviews | Adjustment |
|---|---|
| 0 | -3.00% |
| 1 | -2.63% |
| 2 | -1.50% |
| 3 | -0.38% |
| 4 | -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 Budget Rent a Car experience has been adjusted for 15 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 12 | -0.24% |
| 13 | -0.26% |
| 14 | -0.29% |
| 15 | -0.31% |
| 16 | -0.33% |
| 17 | -0.35% |
| 18 | -0.37% |
| … | … |
Balancing Adjustment
27.99% Adjustment
Every experience's review score is adjusted to balance out the disproportional number of negative reviews that are contributed.
You won't be surprised to learn that disgruntled customers are more likely to leave a review than happy ones. They are motivated to share their experience and warn others. We consider this a good thing and it's why reading the reviews is important. However we've learned it can misrepresent the experience in a more overall sense.
We apply a balancing adjustment to counteract this effect and ensure the ranking score is a more fair representation of the experience. This adjustment is applied equally to all experiences.
Final Ranking Score
37%
The final ranking score once any adjustments, ratings, and rounding has been applied. This value is recalculated each day and a short rolling average is applied. Therefore it may not be precisely accurate based on the other values presented.