$(34$ points total$)$ Refer to the file called diamond.csv and complete the following tasks:

a$.(8$ points$)$ Use PROC IMPORT to import the file into SAS so that it can be used as a

SAS data set.

b$.(8$ points$)$ Using the data set produced in $($a$),$ print just the carat, color, and price

values for only diamonds considered to be one$-$half carat $($actual carat weight between

$0\mathrm{.}48$ and $0\mathrm{.}52$ carat inclusive$)$ and having a color rating of $"$ D $".$

c$.(10$ points$)$ Using a new data step, create a new data set that $(1)$ consists of diamonds

that only have the $"$T$"$ color and $(2)$ creates a new variable Size that classifies

diamonds less than $0\mathrm{.}55$ carats as "Little" and diamonds $0\mathrm{.}55$ carats and larger as

"Big". Print the first $25$ observations from the resulting data set.

d$.(8$ points$)$ Sort the data set in $($c$)$ by Size and Clarity $($listed in that order$)$ and print the

data set for only the variables Clarity and Price using a BY statement applied to Size.