========================================CODE======================================
# First to find out Third Quartile with mean 68 and
Standard deviation 4
Q3=qnorm(p = 0.75 ,mean = 68 ,sd =
4)Â Â Â Â # Third Quartile
Q3
Q1=qnorm(p = 0.25 ,mean = 68 ,sd = 4) # First
Quartile
Q1
IQR =Q3
-Q1Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
# Inter quartile range
IQR
======================================OUTPUT========================================
> Q3=qnorm(p = 0.75 ,mean = 68 ,sd = 4) # Third
Quartile
> Q3
[1] 70.69796
>
> Q1=qnorm(p = 0.25 ,mean = 68 ,sd = 4) # First Quartile
> Q1
[1] 65.30204
>
> IQR =Q3
-Q1Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
# Inter quartile range
> IQR
[1] 5.395918
