Listed below are costs (in dollars) of a sample of roundtrip flights between two cities. The flights involve one stop and a two week stay. Find the coefficient of variation for each of the two sets of data, then compare the variation. The formula for the coefficient of variation is standard deviation/mean=100. 30 Days in Advance: 252 288 284 295 240 253 319
1 Day in Advance: 450 623 564 987 623 1000 581

The coefficient of variation for prices of tickets purchases 30 days in advance is _%
The coefficient of variation for prices of tickets purchases 1 day in advance is _%
Is there a difference in variation between two data sets?
a. the cost of 1 day in davance have less variation than the cost of tickets purchases 30 days in advance.
b. the cost of tickets purchased 30 days in advance have less variation than the cost of tickets purchases 30 days in advance. Please help me with step by step instructions!