Answer:
A. 1.71 mean deviation
B. 4.75 mean deviation in
Step-by-step explanation:
A.
get the mean first:
=22+23+24+25+26+27+28/7
=175/7
=25 (mean)
get the distance ( subtract each data to the mean and ignore negative sign)
22-25=3
23-26=2
24-25=1
25-25=0
26-25=1
27-25=2
28-25=3
3+2+1+0+1+2+3/7
12/7
=1.71
B.
20+22+22+34/4
98/4
=24.5
20-24.5=4.5
22-24.5=2.5
22-24.5=2.5
34-24.5=9.5
4.5+2.5+2.5+9.5/4
19/4
=4.75
