Hi, 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 Ace 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.
Ace Rental Cars
Valid Reviews
111 Valid Reviews
The Ace Rental Cars experience has a total of 118 reviews. There are 111 valid reviews that are included when calculating the ranking score and 7 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 111 valid reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 12 |
|
11% |
| 9/10 | 9 |
|
8% |
| 8/10 | 21 |
|
19% |
| 7/10 | 7 |
|
6% |
| 6/10 | 3 |
|
3% |
| 5/10 | 5 |
|
5% |
| 4/10 | 3 |
|
3% |
| 3/10 | 2 |
|
2% |
| 2/10 | 17 |
|
15% |
| 1/10 | 32 |
|
29% |
49.10% Average
The raw data average (mean) for all the Ace Rental Cars valid reviews is 49.10% and is based on 111 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
47 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 111 valid reviews, the experience has 47 face-to-face reviews collected during interviews by our team.
Below is the distribution of ratings for the 47 face-to-face reviews:
| Rating | Count | Percentage | |
|---|---|---|---|
| 10/10 | 5 |
|
11% |
| 9/10 | 5 |
|
11% |
| 8/10 | 19 |
|
40% |
| 7/10 | 7 |
|
15% |
| 6/10 | 3 |
|
6% |
| 5/10 | 4 |
|
9% |
| 4/10 | 2 |
|
4% |
| 3/10 | 1 |
|
2% |
| 2/10 | 1 |
|
2% |
| 1/10 | 0 |
|
0% |
73.83% Average
The raw data average (mean) for all the Ace Rental Cars face-to-face reviews is 73.83% and is based on 47 face-to-face reviews. This value is not used to calculate the ranking score and it only provided here for comparison purposes.
Weighted Average
33.31%
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 |
|---|---|---|---|
| Paul | 1/10 | 120 days | 100% |
| Nicole | 1/10 | 485 days | 87% |
| Lana | 1/10 | 1096 days | 36% |
| Megan | 1/10 | 1216 days | 26% |
| Mateo | 1/10 | 1369 days | 17% |
| Jenny Kirk | 1/10 | 2130 days | 4% |
| John | 1/10 | 2283 days | 4% |
| Kim canny | 1/10 | 2343 days | 4% |
| Richard Bird | 2/10 | 2343 days | 4% |
| Neal Smith | 10/10 | 2373 days | 10% |
| Marianne | 1/10 | 2649 days | 3% |
| Andy Willmott | 1/10 | 2677 days | 3% |
| Kate | 1/10 | 2677 days | 3% |
| Luca Mangione | 2/10 | 2708 days | 4% |
| John | 2/10 | 2708 days | 4% |
| Sri Claney | 1/10 | 2739 days | 3% |
| Tom | 10/10 | 2739 days | 8% |
| Wendy | 10/10 | 2800 days | 8% |
| Justin | 1/10 | 2830 days | 3% |
| Dan | 2/10 | 2830 days | 3% |
| PB | 1/10 | 2922 days | 3% |
| Mike | 2/10 | 2983 days | 3% |
| Siena | 1/10 | 2983 days | 3% |
| Josephina | 1/10 | 2983 days | 3% |
| RyLee B | 1/10 | 3073 days | 2% |
| Chris Monk | 1/10 | 3347 days | 2% |
| Bryce Kehoe | 8/10 | 3365 days | 5% |
| Martin Murlik | 6/10 | 3369 days | 4% |
| Audrey Darling | 1/10 | 3406 days | 2% |
| Ben | 8/10 | 3509 days | 4% |
| Jo Yo | 1/10 | 3559 days | 1% |
| Olivier Reculeau | 8/10 | 3715 days | 3% |
| Bernhard Fichtl | 5/10 | 3772 days | 2% |
| Casey O'Brien | 2/10 | 3772 days | 1% |
| Carmel Lackey | 10/10 | 3896 days | 2% |
| Martin B | 2/10 | 3956 days | 1% |
| S D | 2/10 | 4017 days | 1% |
| Dror Eyal | 2/10 | 4109 days | 0% |
| Ted Allan | 2/10 | 4109 days | 0% |
| Kat R | 2/10 | 4137 days | 0% |
| Tom Grigg | 6/10 | 4150 days | 1% |
| Charlie Birdwick | 9/10 | 4260 days | 0% |
| Kiwinomad | 1/10 | 4291 days | 0% |
| Paje | 2/10 | 4291 days | 0% |
| MODADC | 3/10 | 4322 days | 0% |
| kjd | 2/10 | 4444 days | 1% |
| Pete Dixon | 1/10 | 4502 days | 1% |
| Diane S | 9/10 | 4503 days | 2% |
| Michael Rohn | 8/10 | 4531 days | 2% |
| Cornelia Stark | 9/10 | 4531 days | 2% |
| Michael Stark | 10/10 | 4531 days | 2% |
| Tisa Duong | 1/10 | 4534 days | 1% |
| R K | 1/10 | 4534 days | 1% |
| Simon Kay | 2/10 | 4534 days | 1% |
| Annika Schmidt | 7/10 | 4814 days | 2% |
| Patrick Stoeit | 5/10 | 4814 days | 2% |
| Y S | 10/10 | 4868 days | 2% |
| Rikke E. | 1/10 | 4899 days | 1% |
| Takenforaride | 1/10 | 4899 days | 1% |
| sharnef | 2/10 | 4991 days | 1% |
| Tourist101 | 9/10 | 4991 days | 2% |
| Jonas King | 4/10 | 5052 days | 1% |
| NoWonderAllKiwisAreInOZ | 1/10 | 5113 days | 1% |
| russwhanau | 1/10 | 5174 days | 1% |
| Marian Stolker | 8/10 | 5221 days | 2% |
| Thomas Krause | 5/10 | 5228 days | 2% |
| Chris & Jen Spencer | 8/10 | 5245 days | 2% |
| Wendy Ashmore | 10/10 | 5312 days | 2% |
| Hamlet | 1/10 | 5418 days | 1% |
| tonny_lim | 1/10 | 5479 days | 1% |
| Gunter | 8/10 | 5554 days | 2% |
| Igor Cima | 10/10 | 5557 days | 2% |
| Gary Koehler | 8/10 | 5562 days | 2% |
| Ryan Dorsey | 8/10 | 5568 days | 2% |
| Kathleen Brown | 10/10 | 5569 days | 2% |
| Ross | 10/10 | 5571 days | 2% |
| Wendy Good | 8/10 | 5573 days | 2% |
| Stacey Rees | 2/10 | 5585 days | 1% |
| Helen Gilbertson | 8/10 | 5598 days | 2% |
| Lacam | 5/10 | 5599 days | 2% |
| jls | 1/10 | 5661 days | 1% |
| chubby69 | 9/10 | 5814 days | 2% |
| Ann Michle | 8/10 | 5856 days | 2% |
| Rose Kearsley | 7/10 | 5926 days | 2% |
| Jamie Hallifax | 8/10 | 5955 days | 2% |
| meggles | 2/10 | 5964 days | 1% |
| Jane | 8/10 | 6026 days | 2% |
| Dimitry Zonnet | 8/10 | 6052 days | 2% |
| S Schlesinger | 10/10 | 6274 days | 2% |
| Jessica Jobmann | 7/10 | 6276 days | 2% |
| Mayer | 8/10 | 6286 days | 2% |
| AnnickH | 7/10 | 6292 days | 2% |
| OllyD | 4/10 | 6299 days | 1% |
| Jasmin | 7/10 | 6300 days | 2% |
| ChenM | 9/10 | 6304 days | 2% |
| Mark | 8/10 | 6342 days | 2% |
| Daryl | 7/10 | 6343 days | 2% |
| Tim | 8/10 | 6390 days | 2% |
| Kath | 9/10 | 6447 days | 2% |
| Louise | 9/10 | 6476 days | 2% |
| Edmund Hillstone | 1/10 | 6619 days | 1% |
| Marian Mckinney | 10/10 | 6663 days | 2% |
| Emma Dickinson | 6/10 | 6667 days | 2% |
| Omri Hasson | 4/10 | 6667 days | 1% |
| Ian and Judy | 8/10 | 6671 days | 2% |
| Katharina | 7/10 | 6682 days | 2% |
| Mike | 3/10 | 6682 days | 1% |
| Mark | 8/10 | 6698 days | 2% |
| Melissa Steedman | 5/10 | 6709 days | 2% |
| Steven | 9/10 | 6744 days | 2% |
| purplekat99 | 8/10 | 6818 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 Ace Rental Cars experience has plenty of reviews and does not meet the criteria for any adjustment.
Recent Reviews Adjustment
-3.74% 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 106 days. The Ace Rental Cars 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 Ace Rental Cars experience has been adjusted for 91 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 88 | -1.08% |
| 89 | -1.09% |
| 90 | -1.10% |
| 91 | -1.12% |
| 92 | -1.13% |
| 93 | -1.14% |
| 94 | -1.15% |
| … | … |
Balancing Adjustment
33.10% 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
63%
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.