If the arithmetic mean of 13, 15, 19, 2, x, 29 is 20, then find the value of x.
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Arithmetic mean= sum of observation
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number of observation
20= 13+15+19+2+x+29
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6
20= 78+ x
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6
78+x = 20×6
78+x = 120
x = 120-78
x = 42
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number of observation
20= 13+15+19+2+x+29
--------------------------
6
20= 78+ x
----------------
6
78+x = 20×6
78+x = 120
x = 120-78
x = 42
Answered by
0
Answer:
Step-by-step explanation:
Mean = Sum of all observation/Total
number of observation
20 = 13+15+19+2+x+29/6
20*6 = 78+x
120-78 = x
42 = x
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