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
34.12%
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 | 201 days | 100% |
| Nicole | 1/10 | 566 days | 84% |
| Lana | 1/10 | 1177 days | 30% |
| Megan | 1/10 | 1297 days | 21% |
| Mateo | 1/10 | 1450 days | 13% |
| Jenny Kirk | 1/10 | 2211 days | 4% |
| John | 1/10 | 2364 days | 4% |
| Kim canny | 1/10 | 2424 days | 4% |
| Richard Bird | 2/10 | 2424 days | 4% |
| Neal Smith | 10/10 | 2454 days | 9% |
| Marianne | 1/10 | 2730 days | 3% |
| Andy Willmott | 1/10 | 2758 days | 3% |
| Kate | 1/10 | 2758 days | 3% |
| Luca Mangione | 2/10 | 2789 days | 4% |
| John | 2/10 | 2789 days | 4% |
| Sri Claney | 1/10 | 2820 days | 3% |
| Tom | 10/10 | 2820 days | 8% |
| Wendy | 10/10 | 2881 days | 7% |
| Justin | 1/10 | 2911 days | 3% |
| Dan | 2/10 | 2911 days | 3% |
| PB | 1/10 | 3003 days | 3% |
| Mike | 2/10 | 3064 days | 3% |
| Siena | 1/10 | 3064 days | 3% |
| Josephina | 1/10 | 3064 days | 3% |
| RyLee B | 1/10 | 3154 days | 2% |
| Chris Monk | 1/10 | 3428 days | 2% |
| Bryce Kehoe | 8/10 | 3446 days | 5% |
| Martin Murlik | 6/10 | 3450 days | 4% |
| Audrey Darling | 1/10 | 3487 days | 2% |
| Ben | 8/10 | 3590 days | 4% |
| Jo Yo | 1/10 | 3640 days | 1% |
| Olivier Reculeau | 8/10 | 3796 days | 3% |
| Bernhard Fichtl | 5/10 | 3853 days | 2% |
| Casey O'Brien | 2/10 | 3853 days | 1% |
| Carmel Lackey | 10/10 | 3977 days | 2% |
| Martin B | 2/10 | 4037 days | 1% |
| S D | 2/10 | 4098 days | 1% |
| Dror Eyal | 2/10 | 4190 days | 0% |
| Ted Allan | 2/10 | 4190 days | 0% |
| Kat R | 2/10 | 4218 days | 0% |
| Tom Grigg | 6/10 | 4231 days | 1% |
| Charlie Birdwick | 9/10 | 4341 days | 0% |
| Kiwinomad | 1/10 | 4372 days | 0% |
| Paje | 2/10 | 4372 days | 0% |
| MODADC | 3/10 | 4403 days | 1% |
| kjd | 2/10 | 4525 days | 1% |
| Pete Dixon | 1/10 | 4583 days | 1% |
| Diane S | 9/10 | 4584 days | 2% |
| Michael Rohn | 8/10 | 4612 days | 2% |
| Cornelia Stark | 9/10 | 4612 days | 2% |
| Michael Stark | 10/10 | 4612 days | 3% |
| Tisa Duong | 1/10 | 4615 days | 1% |
| R K | 1/10 | 4615 days | 1% |
| Simon Kay | 2/10 | 4615 days | 1% |
| Annika Schmidt | 7/10 | 4895 days | 2% |
| Patrick Stoeit | 5/10 | 4895 days | 2% |
| Y S | 10/10 | 4949 days | 3% |
| Rikke E. | 1/10 | 4980 days | 1% |
| Takenforaride | 1/10 | 4980 days | 1% |
| sharnef | 2/10 | 5072 days | 1% |
| Tourist101 | 9/10 | 5072 days | 2% |
| Jonas King | 4/10 | 5133 days | 2% |
| NoWonderAllKiwisAreInOZ | 1/10 | 5194 days | 1% |
| russwhanau | 1/10 | 5255 days | 1% |
| Marian Stolker | 8/10 | 5302 days | 2% |
| Thomas Krause | 5/10 | 5309 days | 2% |
| Chris & Jen Spencer | 8/10 | 5326 days | 2% |
| Wendy Ashmore | 10/10 | 5393 days | 3% |
| Hamlet | 1/10 | 5499 days | 1% |
| tonny_lim | 1/10 | 5560 days | 1% |
| Gunter | 8/10 | 5635 days | 2% |
| Igor Cima | 10/10 | 5638 days | 3% |
| Gary Koehler | 8/10 | 5643 days | 2% |
| Ryan Dorsey | 8/10 | 5649 days | 2% |
| Kathleen Brown | 10/10 | 5650 days | 3% |
| Ross | 10/10 | 5652 days | 3% |
| Wendy Good | 8/10 | 5654 days | 2% |
| Stacey Rees | 2/10 | 5666 days | 1% |
| Helen Gilbertson | 8/10 | 5679 days | 2% |
| Lacam | 5/10 | 5680 days | 2% |
| jls | 1/10 | 5742 days | 1% |
| chubby69 | 9/10 | 5895 days | 2% |
| Ann Michle | 8/10 | 5937 days | 2% |
| Rose Kearsley | 7/10 | 6007 days | 2% |
| Jamie Hallifax | 8/10 | 6036 days | 2% |
| meggles | 2/10 | 6045 days | 1% |
| Jane | 8/10 | 6107 days | 2% |
| Dimitry Zonnet | 8/10 | 6133 days | 2% |
| S Schlesinger | 10/10 | 6355 days | 3% |
| Jessica Jobmann | 7/10 | 6357 days | 2% |
| Mayer | 8/10 | 6367 days | 2% |
| AnnickH | 7/10 | 6373 days | 2% |
| OllyD | 4/10 | 6380 days | 2% |
| Jasmin | 7/10 | 6381 days | 2% |
| ChenM | 9/10 | 6385 days | 2% |
| Mark | 8/10 | 6423 days | 2% |
| Daryl | 7/10 | 6424 days | 2% |
| Tim | 8/10 | 6471 days | 2% |
| Kath | 9/10 | 6528 days | 2% |
| Louise | 9/10 | 6557 days | 2% |
| Edmund Hillstone | 1/10 | 6700 days | 1% |
| Marian Mckinney | 10/10 | 6744 days | 3% |
| Emma Dickinson | 6/10 | 6748 days | 2% |
| Omri Hasson | 4/10 | 6748 days | 2% |
| Ian and Judy | 8/10 | 6752 days | 2% |
| Katharina | 7/10 | 6763 days | 2% |
| Mike | 3/10 | 6763 days | 1% |
| Mark | 8/10 | 6779 days | 2% |
| Melissa Steedman | 5/10 | 6790 days | 2% |
| Steven | 9/10 | 6825 days | 2% |
| purplekat99 | 8/10 | 6899 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
-5.06% 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 108 days. The Ace Rental Cars experience has 0 recent rankings. 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 172 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 169 | -2.03% |
| 170 | -2.04% |
| 171 | -2.05% |
| 172 | -2.06% |
| 173 | -2.07% |
| 174 | -2.09% |
| 175 | -2.10% |
| … | … |
Balancing Adjustment
33.21% 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
62%
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.