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olga55 [171]
3 years ago
15

The ages of several trees on school property are shown below: 3 years, 8 years, 10 years, 14 years, 11 years What is the mean ag

e of these trees?
2.8 years
9.2 years
10 years
11 years
Mathematics
2 answers:
SpyIntel [72]3 years ago
6 0

Answer:

The mean age of these trees is 9.2 years.

Step-by-step explanation:

The mean is calculated as the sum of the observations (the sum of trees’ ages in this case) divided by the number of observations (five trees in this case). The formula is <em>X</em> = (∑<em>Obs</em>) / <em>n</em>, where <em>X</em> means the mean value, ∑ means the sum, <em>Obs</em> means the value of the observations (trees’ years), and <em>n</em> means the number of observations (5).  

<em>X</em> = (∑<em>Obs</em>) / <em>n</em>  

<em>X</em> = (3+8+10+14+11) / 5  

<em>X</em> = 46 / 5

<em>X</em> = 9.2 years

almond37 [142]3 years ago
5 0
3+8+10+14+11= 46 
46/(how many trees) 5= 9.2
9.2 years is your answer. 
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