Q$2$ Create a $2$x$2$ dataframe that shows the average number of times per week a person exercised for both those who had a stroke and those who didn't.

$-$ Summarize the average in a variable called $`$exer$\_$avg$`.$

$-$ The output should be a dataframe assigned to Q$2$ and look something like this:

$```$

CVDSTRK$3$ exer$\_$avg

$1$

$24\mathrm{.}17$

$```$

$```\{$r$\}$

### Do not edit the following line. It is used by CodeGrade.

# CG Q$2$ #

### TYPE YOUR CODE BELOW ###

Q$2<-$ brf $|>$

filter$($CVDSTRK$3>=1$ & CVDSTRK$3<=2)|>$

filter$($EXEROFT$1>=101$ & EXEROFT$1<=199)|>$

group$\_$by$($CVDSTRK$3)|>$

summarise$($exer$\_$avg $=$ mean$($EX

this what I got so far $,$ wrong results it's in R not Python

CVDSTRK$3$

$1104\mathrm{.}6944$

exer$\_$avg

$2104\mathrm{.}1656$