Question : The arithmetic mean of the following data is _________.
23, 17, 20, 19, 21
Option 1: 20
Option 2: 19
Option 3: 23
Option 4: 21
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Answer (1)
20th Jan, 2024
Correct Answer: 20
Solution :
Arithmetic mean
$=\frac{\text{Sum of observations}}{\text{Number of observations}}$
$=\frac{23 + 17 + 20 + 19 + 21}{5}$
$=\frac{100}{5}$
$=20$
Hence, the correct answer is 20.
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