At current silver prices, one is worth at least $6. For a more specific answer, ask about a specific date.
Assuming the coin is worn down so far you can't read the date, the values about $2.50 for the silver
Assuming it's circulated and has no mintmark. Retail values run from $8.50 to $9.75 depending on the grade. But most are valued for the silver, about $5.00. A 1948 Washington quarter is very common.
It's a common date. Retail values are $6.75 to $8.00 depending on how much wear the coin has.
A quartile deviation from some specified value, is the value or values such that a quarter of the observed values fall between these values and the specified value. Usually, but not always, the specified value is the median - the value such that have the observed values are below (and above) it. In that case, one quartile values will have a quarter of the values below it and the other will have a quarter of the values above it. The quartile deviations will be the differences between median and the two quartiles just calculated.
If you are talking about numerical values, then a quarter of twenty is five. If you are talking about time, using the military designations, then a quarter of twenty would be five o'clock P.M.
A 1959 Washington quarter is very common. Circulated coins have retail values from $7.50 to $8.75.
Assuming the coin is worn down so far you can't read the date, the values about $2.50 for the silver
Assuming it's circulated and has no mintmark. Retail values run from $8.50 to $9.75 depending on the grade. But most are valued for the silver, about $5.00. A 1948 Washington quarter is very common.
The 1954 Washington quarter with or without any mintmarks is very common, values for most coins are about $6.00 just for the silver.
Depending on the grade, values are $3.00-$8.00 for most quarters of this date but can have values as high as $50.00 or more.
The coin is 90% silver and 10% copper not pure silver. The date is very common and circulated coins have retail values of $3.00-$4.00
It's a common date. Retail values are $6.75 to $8.00 depending on how much wear the coin has.
See the values below for their values: 14 coin set-$19 5 quarter set-$8 Presidential Proof set-$11 Legacy proof set-$163 14 coin set silver-$65 5 quarter set silver-$38
Assuming this is a Barber quarter with no mint mark the retail values are $6.00 for a well worn coin, $30.00 for medium wear and $70.00 for slight wear.
Both dates are high mintage very common coins, if they show any wear at all the values is for the silver only, about $3.50 each.
If there is no mint mark under the wreath, retail values as of 08/2008 are roughly Very worn - $3.25; moderately worn - $4.50; slight wear - $8.50 If there is a small S under the wreath, the values are $3.25 / $5.75 / $9.50
Assuming it's circulated and has no "S" mintmark, retail values for average coins run from $8.00 to $14.00.