You question is vague.
describeBy
( describe.by is deprecated) , Report basic summary statistics by a grouping variable.
So I guess that a boxplot
it is the nearest plot.
For example :
describeBy(sat.act,sat.act$gender)
group: 1
var n mean sd median trimmed mad min max range skew kurtosis se
gender 1 247 1.00 0.00 1 1.00 0.00 1 1 0 NaN NaN 0.00
education 2 247 3.00 1.54 3 3.12 1.48 0 5 5 -0.54 -0.60 0.10
age 3 247 25.86 9.74 22 24.23 5.93 14 58 44 1.43 1.43 0.62
ACT 4 247 28.79 5.06 30 29.23 4.45 3 36 33 -1.06 1.89 0.32
SATV 5 247 615.11 114.16 630 622.07 118.61 200 800 600 -0.63 0.13 7.26
SATQ 6 245 635.87 116.02 660 645.53 94.89 300 800 500 -0.72 -0.12 7.41
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
group: 2
var n mean sd median trimmed mad min max range skew kurtosis se
gender 1 453 2.00 0.00 2 2.00 0.00 2 2 0 NaN NaN 0.00
education 2 453 3.26 1.35 3 3.40 1.48 0 5 5 -0.74 0.27 0.06
age 3 453 25.45 9.37 22 23.70 5.93 13 65 52 1.77 3.03 0.44
ACT 4 453 28.42 4.69 29 28.63 4.45 15 36 21 -0.39 -0.42 0.22
SATV 5 453 610.66 112.31 620 617.91 103.78 200 800 600 -0.65 0.42 5.28
SATQ 6 442 596.00 113.07 600 602.21 133.43 200 800 600 -0.58 0.13 5.38
>
You can plot this like :
boxplot(sat.act,sat.act$gender, col ='pink')