Respuesta :
ThTHello there. To solve this question, we'll have to remember some properties about arithmetic mean.
Given a set of values x, the value x-bar, written as:
[tex]\bar{x}[/tex]Can be determined using the arithmetic mean of the values of the set.
If this set contains n elements, say
[tex]x=\{x_i,i=1,2,...,n\}[/tex]The value x-bar is the given by
[tex]\bar{x}=\dfrac{\sum_{i=1}^nx_i}{n}[/tex]That is, we sum all the values and divide it by the number of elements in the set.
In this case, we have 7 values, namely
1.1
1.3
5.1
9.7
21.4
22
13.1
Adding the values, we get:
73,7
Dividing it by 7, we get, approximately
[tex]10.53[/tex]This is the answer we were looking for.
