find the relative frequency for each frequency(row)

Question

Often, cruise ships conduct all on-board transactions, with the exception of gambling, on a cashless basis. At the end of the cruise, guests pay one bill that covers all on-board transactions. Suppose that 58 single travelers and 74 couples were surveyed as to their on-board bills for a seven-day cruise from Los Angeles to the Mexican Riviera. Below is a summary of the bills for each group.

Singles

Amount ($) Frequency

51-100	4
101-150	11
151-200	14
201-250	14
251-300	11
301-350	4

Couples

Amount ($) Frequency

100-150	5
151-200	5
201-250	5
251-300	5
301-350	11
351-400	11
401-450	11
451-500	11
501-550	5
551-600	5

find the relative frequency for each individual frequency

Answer 1

To find the relative frequency, first total each column (for singles and couples). Then divide the individual frequency by the total for the group.

For example, for the single group we have

Amount. Frequency. Relative Frequency

51-100 4. 4/58 = 0.069

101-150 11 11/58= 0.190

151-200. 14 14/58=0.241

201-250. 14 14/58=0.241

251-300 11 11/58= 0.190

301-350 4 4/58 = 0.069

Total 58 1.000

Notice the sum of the relative frequency will be 1.000.

Do this for the couples group.