G'day, 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
109 Valid Reviews
The Ace Rental Cars experience has a total of 116 reviews. There are 109 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 109 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 |
|
16% |
| 1/10 | 30 |
|
28% |
49.82% Average
The raw data average (mean) for all the Ace Rental Cars valid reviews is 49.82% and is based on 109 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 109 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
35.31%
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 |
|---|---|---|---|
| Lana | 1/10 | 472 days | 100% |
| Megan | 1/10 | 592 days | 92% |
| Mateo | 1/10 | 745 days | 78% |
| Jenny Kirk | 1/10 | 1506 days | 12% |
| John | 1/10 | 1659 days | 7% |
| Kim canny | 1/10 | 1719 days | 6% |
| Richard Bird | 2/10 | 1719 days | 7% |
| Neal Smith | 10/10 | 1749 days | 15% |
| Marianne | 1/10 | 2025 days | 5% |
| Andy Willmott | 1/10 | 2053 days | 5% |
| Kate | 1/10 | 2053 days | 5% |
| Luca Mangione | 2/10 | 2084 days | 6% |
| John | 2/10 | 2084 days | 6% |
| Sri Claney | 1/10 | 2115 days | 5% |
| Tom | 10/10 | 2115 days | 12% |
| Wendy | 10/10 | 2176 days | 12% |
| Justin | 1/10 | 2206 days | 5% |
| Dan | 2/10 | 2206 days | 5% |
| PB | 1/10 | 2298 days | 5% |
| Mike | 2/10 | 2359 days | 5% |
| Siena | 1/10 | 2359 days | 4% |
| Josephina | 1/10 | 2359 days | 4% |
| RyLee B | 1/10 | 2449 days | 4% |
| Chris Monk | 1/10 | 2723 days | 4% |
| Bryce Kehoe | 8/10 | 2741 days | 9% |
| Martin Murlik | 6/10 | 2745 days | 8% |
| Audrey Darling | 1/10 | 2782 days | 4% |
| Ben | 8/10 | 2885 days | 8% |
| Jo Yo | 1/10 | 2935 days | 3% |
| Olivier Reculeau | 8/10 | 3091 days | 7% |
| Bernhard Fichtl | 5/10 | 3148 days | 5% |
| Casey O'Brien | 2/10 | 3148 days | 3% |
| Carmel Lackey | 10/10 | 3272 days | 6% |
| Martin B | 2/10 | 3332 days | 3% |
| S D | 2/10 | 3393 days | 2% |
| Dror Eyal | 2/10 | 3485 days | 2% |
| Ted Allan | 2/10 | 3485 days | 2% |
| Kat R | 2/10 | 3513 days | 2% |
| Tom Grigg | 6/10 | 3526 days | 4% |
| Charlie Birdwick | 9/10 | 3636 days | 4% |
| Kiwinomad | 1/10 | 3667 days | 2% |
| Paje | 2/10 | 3667 days | 2% |
| MODADC | 3/10 | 3698 days | 2% |
| kjd | 2/10 | 3820 days | 1% |
| Pete Dixon | 1/10 | 3878 days | 1% |
| Diane S | 9/10 | 3879 days | 3% |
| Michael Rohn | 8/10 | 3907 days | 3% |
| Cornelia Stark | 9/10 | 3907 days | 3% |
| Michael Stark | 10/10 | 3907 days | 3% |
| Tisa Duong | 1/10 | 3910 days | 1% |
| R K | 1/10 | 3910 days | 1% |
| Simon Kay | 2/10 | 3910 days | 1% |
| Annika Schmidt | 7/10 | 4190 days | 1% |
| Patrick Stoeit | 5/10 | 4190 days | 1% |
| Y S | 10/10 | 4244 days | 1% |
| Rikke E. | 1/10 | 4275 days | 0% |
| Takenforaride | 1/10 | 4275 days | 0% |
| sharnef | 2/10 | 4367 days | 0% |
| Tourist101 | 9/10 | 4367 days | 0% |
| Jonas King | 4/10 | 4428 days | 2% |
| NoWonderAllKiwisAreInOZ | 1/10 | 4489 days | 1% |
| russwhanau | 1/10 | 4550 days | 1% |
| Marian Stolker | 8/10 | 4597 days | 3% |
| Thomas Krause | 5/10 | 4604 days | 2% |
| Chris & Jen Spencer | 8/10 | 4621 days | 3% |
| Wendy Ashmore | 10/10 | 4688 days | 3% |
| Hamlet | 1/10 | 4794 days | 1% |
| tonny_lim | 1/10 | 4855 days | 1% |
| Gunter | 8/10 | 4930 days | 3% |
| Igor Cima | 10/10 | 4933 days | 3% |
| Gary Koehler | 8/10 | 4938 days | 3% |
| Ryan Dorsey | 8/10 | 4944 days | 3% |
| Kathleen Brown | 10/10 | 4945 days | 3% |
| Ross | 10/10 | 4947 days | 3% |
| Wendy Good | 8/10 | 4949 days | 3% |
| Stacey Rees | 2/10 | 4961 days | 1% |
| Helen Gilbertson | 8/10 | 4974 days | 3% |
| Lacam | 5/10 | 4975 days | 2% |
| jls | 1/10 | 5037 days | 1% |
| chubby69 | 9/10 | 5190 days | 3% |
| Ann Michle | 8/10 | 5232 days | 3% |
| Rose Kearsley | 7/10 | 5302 days | 3% |
| Jamie Hallifax | 8/10 | 5331 days | 3% |
| meggles | 2/10 | 5340 days | 1% |
| Jane | 8/10 | 5402 days | 3% |
| Dimitry Zonnet | 8/10 | 5428 days | 3% |
| S Schlesinger | 10/10 | 5650 days | 3% |
| Jessica Jobmann | 7/10 | 5652 days | 3% |
| Mayer | 8/10 | 5662 days | 3% |
| AnnickH | 7/10 | 5668 days | 3% |
| OllyD | 4/10 | 5675 days | 2% |
| Jasmin | 7/10 | 5676 days | 3% |
| ChenM | 9/10 | 5680 days | 3% |
| Mark | 8/10 | 5718 days | 3% |
| Daryl | 7/10 | 5719 days | 3% |
| Tim | 8/10 | 5766 days | 3% |
| Kath | 9/10 | 5823 days | 3% |
| Louise | 9/10 | 5852 days | 3% |
| Edmund Hillstone | 1/10 | 5995 days | 1% |
| Marian Mckinney | 10/10 | 6039 days | 3% |
| Emma Dickinson | 6/10 | 6043 days | 2% |
| Omri Hasson | 4/10 | 6043 days | 2% |
| Ian and Judy | 8/10 | 6047 days | 3% |
| Katharina | 7/10 | 6058 days | 3% |
| Mike | 3/10 | 6058 days | 2% |
| Mark | 8/10 | 6074 days | 3% |
| Melissa Steedman | 5/10 | 6085 days | 2% |
| Steven | 9/10 | 6120 days | 3% |
| purplekat99 | 8/10 | 6194 days | 3% |
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
-5.94% 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 78 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 200 days. Adjustments are according to the following table.
| Days | Adjustment |
|---|---|
| … | … |
| 197 | -2.89% |
| 198 | -2.91% |
| 199 | -2.92% |
| 200 | -2.94% |
| 201 | -2.95% |
| 202 | -2.97% |
| 203 | -2.98% |
| … | … |
Balancing Adjustment
33.14% 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.