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Pokemon Pack Weighing

Updated on April 16, 2017

Introduction

There is currently a theory on the internet regarding Pokémon booster packs and weight. The theory suggests that the more the pack weighs, the rarer the cards. The theory is based on the fact that holofoil cards (whether holo- or reverse holofoil) weigh more than plain cards. In the present study the author defined holofoil cards as cards with holographic film only on the Pokémon image. Reverse holofoil cards are defined as cards with holographic film on the whole card with the exception of the Pokémon image. This article attempts to shed some light on the theory by demonstrating that there is a significant difference in weight between plain cards and holofoil cards (both holofoil and reverse holofoil), but no significant difference between holofoil and reverse holofoil cards.

Data collection and analysis

In the present study, the author weighed ten plain cards, ten holofoil cards, and ten reverse holofoil cards. Then the author ran a simple one way analysis of variance (ANOVA) with the data points through a statistical software program called Statistical Package for Social Sciences (SPSS). A simple ANOVA tests whether there is a significant difference between 3 or more groups based on one grouping variable. In this case, the grouping variable was weight in grams and the groups were plain cards, holofoil cards, and reverse holofoil cards.

Hypothesis

Hypothesis 1: Holographic (whether holofoil or reverse holofoil) weigh significantly more than plain cards.

Hypothesis 2: Reverse holofoil cards weigh significantly more than holofoil cards.

*Note: The author hypothesized that reverse holofoil cards weigh more than holofoil cards because the surface area covered by holographic film on reverse holofoil cards is greater than the surface area covered on holofoil cards.

Results

The present study attempts to shed light on the theory that the more the pack weighs, the rarer the cards by demonstrating that holographic cards (i.e., holofoil and reverse holofoil) weigh significantly more than plain cards and that there is no significant difference between holofoil and reverse holofoil cards. In the present study, plain cards weighed an average (i.e., mean) of 1.742 grams, holofoil cards 1.935 grams, and reverse holofoil 1.885 grams (see table 1 below).

Comparing averages is not enough to determine whether there is a significant difference between the groups. For this, the author ran an ANOVA. According to the ANOVA, there was a significant difference in weight between plain and holographic cards (i.e., holofoil and reverse holofoil) but there was no significant difference between holofoil cards and reverse holofoil cards (see table 2 below).

The asterisks in the second column identify where there is a significant difference between the groups. For example, in row two there is a significant difference between plain and holofoil and reverse holofoil cards. Specifically, that holofoil and reverse holofoil cards weigh more than plain cards. In row three, holofoil cards weigh significantly more than plain cards but not reverse holofoil cards. In row four, there is a significant difference between reverse holofoil cards and plain cards but not holofoil cards.

Discussion

According to the present study, the author found that holofoil cards and reverse holofoil cards weigh significantly more than plain cards but that there was no significant difference between holofoil cards and reverse holofoil cards. This supports hypothesis 1 that posited that holographic cards (whether holofoil or reverse holofoil) weigh more than plain cards. However, the results suggest that hypothesis two which posited that reverse holofoil cards weigh significantly more than holofoil cards was not supported. According to the ANOVA, there was no significant difference in weight between the two.

The present study adds to the theory that the heavier the pack, the rarer the cards by demonstrating that holographic cards weigh more than plain cards. One downfall to the study is that the author did not use full holographic cards such as EX or secret rare cards as a fourth group. Despite this downfall, this is the only study to utilize a statistical software program and sound data collection methods and analysis. Future research on the subject should include full holographic cards in the ANOVA, such as the ones mentioned above. Additionally, correlations should be run between weight of Pokémon booster packs and rarity of the cards contained inside them. Finally, predictions of rarity of cards according to booster pack weight should be made using linear regression.

Table 1: Descriptive Statistics. Mean weight of plain cards, holofoil cards, and reverse holofoil cards in grams.
Table 1: Descriptive Statistics. Mean weight of plain cards, holofoil cards, and reverse holofoil cards in grams.
Table 2: ANOVA Post Hoc Test
Table 2: ANOVA Post Hoc Test

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