The following data give the total food expenditures (in dollars) for the past one month for...

The following data give the total food expenditures (in dollars) for the past one month for a sample of 20 families.

1122, 540, 1228, 594, 422, 873, 1490, 686, 1287, 1179, 945, 1125, 725, 1074, 946, 1650, 1051, 2119, 1345, 445,

a. Calculate the values of the three quartiles and the interquartile range.

Q1 =

Q2 =

Q3 =

IQR =

b. Find the approximate value of the 57th percentile.

c. Calculate the percentile rank of 1051. %

Solutions

Expert Solution

a) From the given data

Q2 or Median:

IQR = ( Q3 - Q1 ) = 1272.25 - 695.75 = 576.5

b) 57% percentile:

orchestra answered 1 year ago

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