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
32.55%
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 | 36 days | 100% |
| Nicole | 1/10 | 401 days | 91% |
| Lana | 1/10 | 1012 days | 43% |
| Megan | 1/10 | 1132 days | 32% |
| Mateo | 1/10 | 1285 days | 22% |
| Jenny Kirk | 1/10 | 2046 days | 5% |
| John | 1/10 | 2199 days | 4% |
| Kim canny | 1/10 | 2259 days | 4% |
| Richard Bird | 2/10 | 2259 days | 5% |
| Neal Smith | 10/10 | 2289 days | 10% |
| Marianne | 1/10 | 2565 days | 4% |
| Andy Willmott | 1/10 | 2593 days | 3% |
| Kate | 1/10 | 2593 days | 3% |
| Luca Mangione | 2/10 | 2624 days | 4% |
| John | 2/10 | 2624 days | 4% |
| Sri Claney | 1/10 | 2655 days | 3% |
| Tom | 10/10 | 2655 days | 8% |
| Wendy | 10/10 | 2716 days | 8% |
| Justin | 1/10 | 2746 days | 3% |
| Dan | 2/10 | 2746 days | 4% |
| PB | 1/10 | 2838 days | 3% |
| Mike | 2/10 | 2899 days | 3% |
| Siena | 1/10 | 2899 days | 3% |
| Josephina | 1/10 | 2899 days | 3% |
| RyLee B | 1/10 | 2989 days | 3% |
| Chris Monk | 1/10 | 3263 days | 2% |
| Bryce Kehoe | 8/10 | 3281 days | 5% |
| Martin Murlik | 6/10 | 3285 days | 5% |
| Audrey Darling | 1/10 | 3322 days | 2% |
| Ben | 8/10 | 3425 days | 4% |
| Jo Yo | 1/10 | 3475 days | 2% |
| Olivier Reculeau | 8/10 | 3631 days | 3% |
| Bernhard Fichtl | 5/10 | 3688 days | 3% |
| Casey O'Brien | 2/10 | 3688 days | 1% |
| Carmel Lackey | 10/10 | 3812 days | 3% |
| Martin B | 2/10 | 3872 days | 1% |
| S D | 2/10 | 3933 days | 1% |
| Dror Eyal | 2/10 | 4025 days | 1% |
| Ted Allan | 2/10 | 4025 days | 1% |
| Kat R | 2/10 | 4053 days | 1% |
| Tom Grigg | 6/10 | 4066 days | 1% |
| Charlie Birdwick | 9/10 | 4176 days | 1% |
| Kiwinomad | 1/10 | 4207 days | 0% |
| Paje | 2/10 | 4207 days | 0% |
| MODADC | 3/10 | 4238 days | 0% |
| kjd | 2/10 | 4360 days | 0% |
| Pete Dixon | 1/10 | 4418 days | 1% |
| Diane S | 9/10 | 4419 days | 2% |
| Michael Rohn | 8/10 | 4447 days | 2% |
| Cornelia Stark | 9/10 | 4447 days | 2% |
| Michael Stark | 10/10 | 4447 days | 2% |
| Tisa Duong | 1/10 | 4450 days | 1% |
| R K | 1/10 | 4450 days | 1% |
| Simon Kay | 2/10 | 4450 days | 1% |
| Annika Schmidt | 7/10 | 4730 days | 2% |
| Patrick Stoeit | 5/10 | 4730 days | 2% |
| Y S | 10/10 | 4784 days | 2% |
| Rikke E. | 1/10 | 4815 days | 1% |
| Takenforaride | 1/10 | 4815 days | 1% |
| sharnef | 2/10 | 4907 days | 1% |
| Tourist101 | 9/10 | 4907 days | 2% |
| Jonas King | 4/10 | 4968 days | 2% |
| NoWonderAllKiwisAreInOZ | 1/10 | 5029 days | 1% |
| russwhanau | 1/10 | 5090 days | 1% |
| Marian Stolker | 8/10 | 5137 days | 2% |
| Thomas Krause | 5/10 | 5144 days | 2% |
| Chris & Jen Spencer | 8/10 | 5161 days | 2% |
| Wendy Ashmore | 10/10 | 5228 days | 2% |
| Hamlet | 1/10 | 5334 days | 1% |
| tonny_lim | 1/10 | 5395 days | 1% |
| Gunter | 8/10 | 5470 days | 2% |
| Igor Cima | 10/10 | 5473 days | 2% |
| Gary Koehler | 8/10 | 5478 days | 2% |
| Ryan Dorsey | 8/10 | 5484 days | 2% |
| Kathleen Brown | 10/10 | 5485 days | 2% |
| Ross | 10/10 | 5487 days | 2% |
| Wendy Good | 8/10 | 5489 days | 2% |
| Stacey Rees | 2/10 | 5501 days | 1% |
| Helen Gilbertson | 8/10 | 5514 days | 2% |
| Lacam | 5/10 | 5515 days | 2% |
| jls | 1/10 | 5577 days | 1% |
| chubby69 | 9/10 | 5730 days | 2% |
| Ann Michle | 8/10 | 5772 days | 2% |
| Rose Kearsley | 7/10 | 5842 days | 2% |
| Jamie Hallifax | 8/10 | 5871 days | 2% |
| meggles | 2/10 | 5880 days | 1% |
| Jane | 8/10 | 5942 days | 2% |
| Dimitry Zonnet | 8/10 | 5968 days | 2% |
| S Schlesinger | 10/10 | 6190 days | 2% |
| Jessica Jobmann | 7/10 | 6192 days | 2% |
| Mayer | 8/10 | 6202 days | 2% |
| AnnickH | 7/10 | 6208 days | 2% |
| OllyD | 4/10 | 6215 days | 2% |
| Jasmin | 7/10 | 6216 days | 2% |
| ChenM | 9/10 | 6220 days | 2% |
| Mark | 8/10 | 6258 days | 2% |
| Daryl | 7/10 | 6259 days | 2% |
| Tim | 8/10 | 6306 days | 2% |
| Kath | 9/10 | 6363 days | 2% |
| Louise | 9/10 | 6392 days | 2% |
| Edmund Hillstone | 1/10 | 6535 days | 1% |
| Marian Mckinney | 10/10 | 6579 days | 2% |
| Emma Dickinson | 6/10 | 6583 days | 2% |
| Omri Hasson | 4/10 | 6583 days | 2% |
| Ian and Judy | 8/10 | 6587 days | 2% |
| Katharina | 7/10 | 6598 days | 2% |
| Mike | 3/10 | 6598 days | 1% |
| Mark | 8/10 | 6614 days | 2% |
| Melissa Steedman | 5/10 | 6625 days | 2% |
| Steven | 9/10 | 6660 days | 2% |
| purplekat99 | 8/10 | 6734 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
-2.77% 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 56 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 7 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 4 | -0.08% |
| 5 | -0.10% |
| 6 | -0.12% |
| 7 | -0.14% |
| 8 | -0.16% |
| 9 | -0.18% |
| 10 | -0.20% |
| … | … |
Balancing Adjustment
33.05% 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.