Find the mean deviation of 1, 2, 3 and 4

IsholaDaniel

2 years ago

To find the mean deviation, follow these steps:

Find the mean (average) of the data set.
Find the absolute deviation of each data point from the mean.
Find the mean (average) of these absolute deviations.
Let's calculate:

Given data: 1, 2, 3, 4

Find the mean:
Mean
=
1
+
2
+
3
+
4
4
=
10
4
=
2.5
Mean=
4
1+2+3+4
​
=
4
10
​
=2.5
Find the absolute deviation of each data point from the mean:
∣
1
−
2.5
∣
=
1.5
∣1−2.5∣=1.5
∣
2
−
2.5
∣
=
0.5
∣2−2.5∣=0.5
∣
3
−
2.5
∣
=
0.5
∣3−2.5∣=0.5
∣
4
−
2.5
∣
=
1.5
∣4−2.5∣=1.5
Find the mean of these absolute deviations:
Mean Deviation
=
1.5
+
0.5
+
0.5
+
1.5
4
=
4
4
=
1
Mean Deviation=
4
1.5+0.5+0.5+1.5
​
=
4
4
​
=1
Therefore, the mean deviation of the data set is
1
1.

Vicbeautyqueen

2 years ago

ooh i see now, it is supposed to be positive all through. Those this apply to all mean deviation questions

Felix247

4 years ago

Pls check the workings again, it is not correct

Joelw

2 years ago

The answer is meant to be zero

lopeyelanre

2 years ago

the answer is 0 i solved 4 time still 0

Divineelite74

3 months ago

abeg am i the only ine getting 0/4 as the answer while others are getting 4/4 ??