Coinstar vs. the Kitchen Scale
Jul. 4th, 2014 05:44 pmHow much was in those change jars on top of the fridge? I weighed the coins and then ran them through the counting machine at QFC.
Pretty close really. Older pennies have been substantially heavier so that's probably why the penny count by weight was high.
I didn't run the quarters through the machine since I use them for laundry. Sadly, despite the Beach Boys' financial planning advice, $47.72 is not enough to buy a sporty new Chevy.
I guess I could also have stacked each coin type (slid them into a v-shaped groove in something (quiet,![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
m_pig)) and measured their length. That might have been better for the pennies.
Other things found in the change jar: two Eisenhower half-dollars, one bicentennial; some Canadian quarters and Japanese 50-yen coins; and an Australian two-cent piece which appears to have a firelizard on the back.
| Coin | Weight | Mass ea. | Est. by wt | Coinstar | Diff. |
|---|---|---|---|---|---|
| Quarters | 621 | 5.670 | 110 = $27.40 | — | |
| Dimes | 742 ± 3 | 2.268 | 327 = $32.72 | 328 | +0.3% |
| Nickels | 1212 | 5.000 | 242 = $12.12 | 243 | +0.4% |
| Cents | 3251 | 2.500 | 1300 = $13.00 | 1243 | -4.4% |
Pretty close really. Older pennies have been substantially heavier so that's probably why the penny count by weight was high.
I didn't run the quarters through the machine since I use them for laundry. Sadly, despite the Beach Boys' financial planning advice, $47.72 is not enough to buy a sporty new Chevy.
I guess I could also have stacked each coin type (slid them into a v-shaped groove in something (quiet,
m_pig)) and measured their length. That might have been better for the pennies.Other things found in the change jar: two Eisenhower half-dollars, one bicentennial; some Canadian quarters and Japanese 50-yen coins; and an Australian two-cent piece which appears to have a firelizard on the back.
