Consider the following table for the perlod from $1973$ through $1980.$

a$.$ Calculate the average return for Treasury bills and the average annual Inflation rate $($consumer price Index$)$ for this

perlod.

Note: Do not round Intermedlate calculations and enter your answers as a percent rounded to $2$ declmal places,

e$.$g$.,32\mathrm{.}16.$

b$.$ Calculate the standard devlation of Treasury bill returns and Inflation over this time period.

Note: Do not round Intermedlate calculations and enter your answers as a percent rounded to $2$ declmal places,

e$.$g$.,32\mathrm{.}16.$

c$.$ Calculate the real return for each year.

Note: A negatlve answer should be Indlcated by a minus sign. Do not round Intermedlate calculatlons and enter

your answers as a percent rounded to $2$ declmal places, e$.$g$.,32\mathrm{.}16.$

d$.$ What is the average real return for Treasury bills?

Note: A negatlve answer should be Indlcated by a minus sign. Do not round Intermedlate calculatlons and enter

your answer as a percent rounded to $2$ declmal places, e$.$g$.,32\mathrm{.}16.$