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 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
32.93%
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 | 80 days | 100% |
| Nicole | 1/10 | 445 days | 89% |
| Lana | 1/10 | 1056 days | 39% |
| Megan | 1/10 | 1176 days | 29% |
| Mateo | 1/10 | 1329 days | 19% |
| Jenny Kirk | 1/10 | 2090 days | 4% |
| John | 1/10 | 2243 days | 4% |
| Kim canny | 1/10 | 2303 days | 4% |
| Richard Bird | 2/10 | 2303 days | 4% |
| Neal Smith | 10/10 | 2334 days | 10% |
| Marianne | 1/10 | 2609 days | 3% |
| Andy Willmott | 1/10 | 2637 days | 3% |
| Kate | 1/10 | 2637 days | 3% |
| Luca Mangione | 2/10 | 2668 days | 4% |
| John | 2/10 | 2668 days | 4% |
| Sri Claney | 1/10 | 2699 days | 3% |
| Tom | 10/10 | 2699 days | 8% |
| Wendy | 10/10 | 2760 days | 8% |
| Justin | 1/10 | 2790 days | 3% |
| Dan | 2/10 | 2790 days | 3% |
| PB | 1/10 | 2882 days | 3% |
| Mike | 2/10 | 2943 days | 3% |
| Siena | 1/10 | 2943 days | 3% |
| Josephina | 1/10 | 2943 days | 3% |
| RyLee B | 1/10 | 3033 days | 2% |
| Chris Monk | 1/10 | 3308 days | 2% |
| Bryce Kehoe | 8/10 | 3325 days | 5% |
| Martin Murlik | 6/10 | 3329 days | 4% |
| Audrey Darling | 1/10 | 3367 days | 2% |
| Ben | 8/10 | 3469 days | 4% |
| Jo Yo | 1/10 | 3520 days | 1% |
| Olivier Reculeau | 8/10 | 3675 days | 3% |
| Bernhard Fichtl | 5/10 | 3732 days | 2% |
| Casey O'Brien | 2/10 | 3733 days | 1% |
| Carmel Lackey | 10/10 | 3856 days | 2% |
| Martin B | 2/10 | 3917 days | 1% |
| S D | 2/10 | 3978 days | 1% |
| Dror Eyal | 2/10 | 4070 days | 0% |
| Ted Allan | 2/10 | 4070 days | 0% |
| Kat R | 2/10 | 4098 days | 0% |
| Tom Grigg | 6/10 | 4110 days | 1% |
| Charlie Birdwick | 9/10 | 4221 days | 1% |
| Kiwinomad | 1/10 | 4251 days | 0% |
| Paje | 2/10 | 4251 days | 0% |
| MODADC | 3/10 | 4282 days | 0% |
| kjd | 2/10 | 4404 days | 1% |
| Pete Dixon | 1/10 | 4463 days | 1% |
| Diane S | 9/10 | 4463 days | 2% |
| Michael Rohn | 8/10 | 4491 days | 2% |
| Cornelia Stark | 9/10 | 4491 days | 2% |
| Michael Stark | 10/10 | 4491 days | 2% |
| Tisa Duong | 1/10 | 4494 days | 1% |
| R K | 1/10 | 4494 days | 1% |
| Simon Kay | 2/10 | 4494 days | 1% |
| Annika Schmidt | 7/10 | 4774 days | 2% |
| Patrick Stoeit | 5/10 | 4774 days | 2% |
| Y S | 10/10 | 4828 days | 2% |
| Rikke E. | 1/10 | 4859 days | 1% |
| Takenforaride | 1/10 | 4859 days | 1% |
| sharnef | 2/10 | 4951 days | 1% |
| Tourist101 | 9/10 | 4951 days | 2% |
| Jonas King | 4/10 | 5012 days | 1% |
| NoWonderAllKiwisAreInOZ | 1/10 | 5073 days | 1% |
| russwhanau | 1/10 | 5134 days | 1% |
| Marian Stolker | 8/10 | 5181 days | 2% |
| Thomas Krause | 5/10 | 5188 days | 2% |
| Chris & Jen Spencer | 8/10 | 5205 days | 2% |
| Wendy Ashmore | 10/10 | 5272 days | 2% |
| Hamlet | 1/10 | 5378 days | 1% |
| tonny_lim | 1/10 | 5439 days | 1% |
| Gunter | 8/10 | 5514 days | 2% |
| Igor Cima | 10/10 | 5517 days | 2% |
| Gary Koehler | 8/10 | 5522 days | 2% |
| Ryan Dorsey | 8/10 | 5528 days | 2% |
| Kathleen Brown | 10/10 | 5529 days | 2% |
| Ross | 10/10 | 5531 days | 2% |
| Wendy Good | 8/10 | 5533 days | 2% |
| Stacey Rees | 2/10 | 5545 days | 1% |
| Helen Gilbertson | 8/10 | 5558 days | 2% |
| Lacam | 5/10 | 5559 days | 2% |
| jls | 1/10 | 5621 days | 1% |
| chubby69 | 9/10 | 5774 days | 2% |
| Ann Michle | 8/10 | 5816 days | 2% |
| Rose Kearsley | 7/10 | 5886 days | 2% |
| Jamie Hallifax | 8/10 | 5915 days | 2% |
| meggles | 2/10 | 5924 days | 1% |
| Jane | 8/10 | 5986 days | 2% |
| Dimitry Zonnet | 8/10 | 6012 days | 2% |
| S Schlesinger | 10/10 | 6234 days | 2% |
| Jessica Jobmann | 7/10 | 6237 days | 2% |
| Mayer | 8/10 | 6247 days | 2% |
| AnnickH | 7/10 | 6252 days | 2% |
| OllyD | 4/10 | 6259 days | 1% |
| Jasmin | 7/10 | 6261 days | 2% |
| ChenM | 9/10 | 6264 days | 2% |
| Mark | 8/10 | 6303 days | 2% |
| Daryl | 7/10 | 6303 days | 2% |
| Tim | 8/10 | 6351 days | 2% |
| Kath | 9/10 | 6408 days | 2% |
| Louise | 9/10 | 6437 days | 2% |
| Edmund Hillstone | 1/10 | 6580 days | 1% |
| Marian Mckinney | 10/10 | 6623 days | 2% |
| Emma Dickinson | 6/10 | 6627 days | 2% |
| Omri Hasson | 4/10 | 6627 days | 1% |
| Ian and Judy | 8/10 | 6631 days | 2% |
| Katharina | 7/10 | 6642 days | 2% |
| Mike | 3/10 | 6642 days | 1% |
| Mark | 8/10 | 6658 days | 2% |
| Melissa Steedman | 5/10 | 6669 days | 2% |
| Steven | 9/10 | 6704 days | 2% |
| purplekat99 | 8/10 | 6778 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
-3.47% 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 70 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 51 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 48 | -0.80% |
| 49 | -0.81% |
| 50 | -0.83% |
| 51 | -0.85% |
| 52 | -0.86% |
| 53 | -0.88% |
| 54 | -0.89% |
| … | … |
Balancing Adjustment
33.12% 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.