Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \bold{ \sf{25.75}}}}}}[/tex]
Step-by-step explanation:
Given data : 20 , 25 , 28 , 30
Σx ( sum of all the items ) = 20 + 25 + 28 + 30 = 103
N ( total number of items ) = 4
Finding the mean
To find mean of the given data , divide the sum of all the items by the number of items.
[tex] \boxed{ \sf{mean = \frac{sum \: of \: all \: the \: items}{the \: number \: of \: items}}} [/tex]
[tex] \longrightarrow{ \sf{ \frac{103}{4}}} [/tex]
[tex] \longrightarrow{ \sf{25.75}}[/tex]
Hope I helped!
Best regards! :D
