A survey asked eight students about their scores on a history test and whether they studied for the test. The table shows the results of the survey.

Which statements about the data sets are true? Check all that apply.

a The mean absolute deviation for the group of students who studied is 12.
b The mean absolute deviation for the group of students who did not study is 3.5.
c The data for the group that studied are more spread out than the data for the group that did not study
d The data for the group that did not study are more spread out than the data for the group that studied.
eThe data for the group that studied are more clustered around the mean than the data for the group that did not study.
f The data for the group that did not study are more clustered around the mean than the data for the group that did study.

[[[SHOW WORK!]]]

Students who studied got following marks =

88,90,86,96

Mean =  and mean absolute deviation = 3

Students who did not study got following marks =

34,67,80,59

Mean =  and mean absolute deviation = 13.5

The correct statements are :

The mean absolute deviation for the group of students who did not study is 13.5.

The data for the group that did not study is more spread out than the data for the group that studied

The data for the group that studied is more are more clustered around the mean than the data for the group that did not study.

Step-by-step explanation:

wheres the graph i cant see it if its there

Step-by-step explanation:

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

21.4 i did it already for s1

step-by-step explanation: