Thread: answerr check!! - Statistics question

Please help! ** Check my answers **

59. The manager of Sam and Ella's Restaurant looked at the receipts for the last two days. The following table shows the range of values:

Amount of ReceiptFrequency of Receipts 0-0.99171.00-1.99852.00-2.991403.00-3.99754.00-4.99825.00-5.99736.00-6.99627.00-7.99218.00-8.99149.00-9.992210.00-15.0043

Find

a) Q3
My Answer:
Q3 = 3/4 (634)th or the 1175.5th receipt
Therefore, Q3 is 58.5 receipts into the 6.00-6.99 interval.
Q3 = 6.00 + 58.5/62
= 6.94 is Q3

b) D2
My Answer:
D2 will be the 2/10 (634)th or the 126.8th receipt.
D2 is 115.2 recepts into the 2.00-2.99 interval
D2 = 2.00 + 115.2/140
= 2.823

c) P87
My Answer:
P87 will be the 87/100 (634)th or the 551.58th receipt
P87 is 3.42 receipts into the 7.00-7.99 interval
P87 = 7.00+ 3.42/21
= 7.163

Are any of these right?