Listed below are the durations in hours of a simple random s

Listed below are the durations (in hours of a simple random sample of all flights of a space shuttle. Find the (a mean, (b) median, (c) mode, and (d) midrange for the given sample data. Is there a duration time that is very unusual? How might that duration time be explained 77 97 234 187 164 258 194 379 254 234 377 334 224 241 0 a. The mean is hours Round to one decimal place as needed.) b. The median is hours Round to one decimal place as needed.) c. Select the correct choice below and fillin any answer boxes in your choice OA. The mode is hours (Use a comma to separate answers as needed. Round to one decimal place as needed.) OB. There is no mode d. The midrange is hours (Round to one decimal place as needed.) Is there a duration time that is very unusual? How might that duration time be explained? OA Yes, the time of more than 375 hours is very unusual. It could represent a very long flight. OB. No, the flights have usual duration times ranging from 0 to over 375 hours OC. No, there is no flight with an unusual duration time OD. Yes, the time of 0 hours is very unusual. It could represent a fight that was aborted.

Solution

a)The mean is: (77+97+…+0)/15=216.93

b)Arrange the data in ascending order:

0,77,97,164,187,194,224,234,234,241,254,258,334,377,379

Median is the middle most value that is 234.

c)Mode is that observation which occurs maximum number of times. Thus mode is 234 hours.

d)The midrange is the mean of the maximum and minimum observations that is 379+0/2=189.5

Yes, the time of 0 hours is very unusual. It could represent a flight that was aborted.