Qualifers

hobart4281

Hello All,

First time posting. Can anyone explain the effect that qualifiers have when computing the weighted GPA and Set Ratings. Thanks.

Brian

augustaman

The grade will drop 2 points. (Copied from PSA site)

Grade Points, Set Ratings and Weighting

Set rankings are determined by the grades of the items in the set, the "weight" assigned to each item in the set, and the set's completeness. Each item within the set is assigned a item rating based on the value of the item in NM-MT condition. For example, a 1952 Topps Mickey Mantle would have a much stronger rating than a 1952 Topps common and, therefore, be given more weight in evaluating the set as a whole. Most sets are broken down using a 1-10 scale, with 10 being the greatest weight. Some sets feature ultra-rare items. Those items will command a much higher weighting according to their relative rarity. If the set is very small with little variation in individual item prices, then the scale may be 1-5. Weighting for each set is viewable by clicking on the set composite link found on each set page.
Then, using the individual item ratings, the grade of each item, the completion percentage and set size, a unique formula is created for each set in the registry. To be specific, the weighted grade point average is determined by multiplying the grade of each item listed in a set by the weight of the item. (Note that for calculation purposes a non-graded authenticated item receives a default grade of 3.) Then these totals are summed and divided by the total sum for weights of those items. The final set rating is achieved by dividing the weighted grade sum by the total sum of the weights in the entire set. Now, while this is NOT an exact science, the formula should provide an accurate evaluation of each set registered on our site. This means you can compare your prized sets to the best the hobby has to offer.

Additionally, the following point deductions are taken for Qualifiers. For example, if your card or ticket is graded PSA 9Q, the grade calculation in the Registry will be 7.

9Q = -2
8Q = -2
7Q = -2
6Q = -2
5Q = -2
4Q = -2
3Q = -1
2Q = -1
1Q = no deduction