Bloomberg Intelligence listed $50$ companies to watch in $2019.$ Twelve of the companies are listed here with their total assets and $12-$month sales.

$5$

$6$

$7$

$\backslash$table$[[$Company$,$Assets,Sales$],[$Anthem$,74\mathrm{.}37,89\mathrm{.}60],[$Barclays$,34\mathrm{.}45,8\mathrm{.}51],[$CBS$,20\mathrm{.}39,14\mathrm{.}32],[$Comcast$,194\mathrm{.}25,87\mathrm{.}52],[$Dell Technolohgies,$123\mathrm{.}38,85\mathrm{.}84],[$Ford$,258\mathrm{.}08,147],[$General Electric,$65\mathrm{.}36,23\mathrm{.}20],[$Kroger$,36\mathrm{.}96,124\mathrm{.}18],[$Nike$,22\mathrm{.}5,36\mathrm{.}4],[$Petrobas$,220\mathrm{.}09,92\mathrm{.}660],[$Tableau Software,$1\mathrm{.}47,0\mathrm{.}99],[$Tesla$,27\mathrm{.}91,13\mathrm{.}60]]$

TASK

a$.$ Draw a scatter diagram.

TASK

b$.$ The simple correlation coefficient $(r)$ is

TASK

c$.$ The regression equation, with the coefficients, is

hat$(y)=$

TASK

d$.$ For a company with $$100$ billion in assets, predict the $12-$month sales is $($ $ billions$).$

${?}^{{?}^{?}}$ use the equation in c$.{?}^{{?}^{?}}$

QUESTION $1$

QUESTION $2$

QUESTION $3$