the arithmetic mean of observation 9,8,27,36,45 is
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Step-by-step explanation:
1. The heights of five runners are 160 cm, 137 cm, 149 cm, 153 cm and 161 cm respectively. Find the mean height per runner.
Solution:
Mean height = Sum of the heights of the runners/number of runners
= (160 + 137 + 149 + 153 + 161)/5 cm
= 760/5 cm
= 152 cm.
Hence, the mean height is 152 cm.
2. Find the mean of the first five prime numbers.
Solution:
The first five prime numbers are 2, 3, 5, 7 and 11.
Mean = Sum of the first five prime numbers/number of prime numbers
= (2 + 3 + 5 + 7 + 11)/5
= 28/5
= 5.6
Hence, their mean is 5.6
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