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
33.51%
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 | 140 days | 100% |
| Nicole | 1/10 | 505 days | 86% |
| Lana | 1/10 | 1116 days | 34% |
| Megan | 1/10 | 1236 days | 25% |
| Mateo | 1/10 | 1389 days | 16% |
| Jenny Kirk | 1/10 | 2150 days | 4% |
| John | 1/10 | 2303 days | 4% |
| Kim canny | 1/10 | 2363 days | 4% |
| Richard Bird | 2/10 | 2363 days | 4% |
| Neal Smith | 10/10 | 2394 days | 10% |
| Marianne | 1/10 | 2669 days | 3% |
| Andy Willmott | 1/10 | 2697 days | 3% |
| Kate | 1/10 | 2697 days | 3% |
| Luca Mangione | 2/10 | 2728 days | 4% |
| John | 2/10 | 2728 days | 4% |
| Sri Claney | 1/10 | 2759 days | 3% |
| Tom | 10/10 | 2759 days | 8% |
| Wendy | 10/10 | 2820 days | 8% |
| Justin | 1/10 | 2850 days | 3% |
| Dan | 2/10 | 2850 days | 3% |
| PB | 1/10 | 2942 days | 3% |
| Mike | 2/10 | 3003 days | 3% |
| Siena | 1/10 | 3003 days | 3% |
| Josephina | 1/10 | 3003 days | 3% |
| RyLee B | 1/10 | 3093 days | 2% |
| Chris Monk | 1/10 | 3368 days | 2% |
| Bryce Kehoe | 8/10 | 3385 days | 5% |
| Martin Murlik | 6/10 | 3389 days | 4% |
| Audrey Darling | 1/10 | 3427 days | 2% |
| Ben | 8/10 | 3529 days | 4% |
| Jo Yo | 1/10 | 3580 days | 1% |
| Olivier Reculeau | 8/10 | 3735 days | 3% |
| Bernhard Fichtl | 5/10 | 3792 days | 2% |
| Casey O'Brien | 2/10 | 3793 days | 1% |
| Carmel Lackey | 10/10 | 3916 days | 2% |
| Martin B | 2/10 | 3977 days | 1% |
| S D | 2/10 | 4038 days | 1% |
| Dror Eyal | 2/10 | 4130 days | 0% |
| Ted Allan | 2/10 | 4130 days | 0% |
| Kat R | 2/10 | 4158 days | 0% |
| Tom Grigg | 6/10 | 4170 days | 1% |
| Charlie Birdwick | 9/10 | 4281 days | 0% |
| Kiwinomad | 1/10 | 4311 days | 0% |
| Paje | 2/10 | 4311 days | 0% |
| MODADC | 3/10 | 4342 days | 0% |
| kjd | 2/10 | 4464 days | 1% |
| Pete Dixon | 1/10 | 4523 days | 1% |
| Diane S | 9/10 | 4523 days | 2% |
| Michael Rohn | 8/10 | 4551 days | 2% |
| Cornelia Stark | 9/10 | 4551 days | 2% |
| Michael Stark | 10/10 | 4551 days | 2% |
| Tisa Duong | 1/10 | 4554 days | 1% |
| R K | 1/10 | 4554 days | 1% |
| Simon Kay | 2/10 | 4554 days | 1% |
| Annika Schmidt | 7/10 | 4834 days | 2% |
| Patrick Stoeit | 5/10 | 4834 days | 2% |
| Y S | 10/10 | 4888 days | 2% |
| Rikke E. | 1/10 | 4919 days | 1% |
| Takenforaride | 1/10 | 4919 days | 1% |
| sharnef | 2/10 | 5011 days | 1% |
| Tourist101 | 9/10 | 5011 days | 2% |
| Jonas King | 4/10 | 5072 days | 2% |
| NoWonderAllKiwisAreInOZ | 1/10 | 5133 days | 1% |
| russwhanau | 1/10 | 5194 days | 1% |
| Marian Stolker | 8/10 | 5241 days | 2% |
| Thomas Krause | 5/10 | 5248 days | 2% |
| Chris & Jen Spencer | 8/10 | 5265 days | 2% |
| Wendy Ashmore | 10/10 | 5332 days | 2% |
| Hamlet | 1/10 | 5438 days | 1% |
| tonny_lim | 1/10 | 5499 days | 1% |
| Gunter | 8/10 | 5574 days | 2% |
| Igor Cima | 10/10 | 5577 days | 2% |
| Gary Koehler | 8/10 | 5582 days | 2% |
| Ryan Dorsey | 8/10 | 5588 days | 2% |
| Kathleen Brown | 10/10 | 5589 days | 2% |
| Ross | 10/10 | 5591 days | 2% |
| Wendy Good | 8/10 | 5593 days | 2% |
| Stacey Rees | 2/10 | 5605 days | 1% |
| Helen Gilbertson | 8/10 | 5618 days | 2% |
| Lacam | 5/10 | 5619 days | 2% |
| jls | 1/10 | 5681 days | 1% |
| chubby69 | 9/10 | 5834 days | 2% |
| Ann Michle | 8/10 | 5876 days | 2% |
| Rose Kearsley | 7/10 | 5946 days | 2% |
| Jamie Hallifax | 8/10 | 5975 days | 2% |
| meggles | 2/10 | 5984 days | 1% |
| Jane | 8/10 | 6046 days | 2% |
| Dimitry Zonnet | 8/10 | 6072 days | 2% |
| S Schlesinger | 10/10 | 6295 days | 2% |
| Jessica Jobmann | 7/10 | 6297 days | 2% |
| Mayer | 8/10 | 6307 days | 2% |
| AnnickH | 7/10 | 6312 days | 2% |
| OllyD | 4/10 | 6319 days | 2% |
| Jasmin | 7/10 | 6321 days | 2% |
| ChenM | 9/10 | 6324 days | 2% |
| Mark | 8/10 | 6363 days | 2% |
| Daryl | 7/10 | 6364 days | 2% |
| Tim | 8/10 | 6411 days | 2% |
| Kath | 9/10 | 6468 days | 2% |
| Louise | 9/10 | 6497 days | 2% |
| Edmund Hillstone | 1/10 | 6640 days | 1% |
| Marian Mckinney | 10/10 | 6683 days | 2% |
| Emma Dickinson | 6/10 | 6687 days | 2% |
| Omri Hasson | 4/10 | 6687 days | 2% |
| Ian and Judy | 8/10 | 6691 days | 2% |
| Katharina | 7/10 | 6702 days | 2% |
| Mike | 3/10 | 6702 days | 1% |
| Mark | 8/10 | 6718 days | 2% |
| Melissa Steedman | 5/10 | 6729 days | 2% |
| Steven | 9/10 | 6764 days | 2% |
| purplekat99 | 8/10 | 6838 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
-3.81% 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 119 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 111 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 108 | -1.16% |
| 109 | -1.17% |
| 110 | -1.18% |
| 111 | -1.19% |
| 112 | -1.20% |
| 113 | -1.21% |
| 114 | -1.22% |
| … | … |
Balancing Adjustment
33.07% 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.