if the mean of 12,14,11,17,x is 14what is the value of x
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Answer:
The average of a given set of numbers is called the Arithmetic mean, or simply the mean, of the given numbers.
Mean =
Coming to the question ;
Number of observations = 9
Sum of observations
= 12 + 5 + 3 + 18 + 10 + 17 + x + 6 + 6
= 77 + x
Now,
Mean =
⇒ 9 =
⇒ 9 × 9 = 77 + x
⇒ 81 = 77 + x
⇒ x = 81 - 77
⇒ x = 4
Hence, the value of x = 4.
Range : The difference between the largest and the smallest observation is called the range of the data.
Here, largest observation = 18
And, smallest observation = 3
∴ Range = ( 18 - 3 )
⇒ Range = 15.
Step-by-step explanation: