The mean ad Median of 1 to 20 prime numbers * 1 point A. 9 and 9.6 B. 9.62 and 9 C. 11 and 9.7 D. 9.7 and 11
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Prime Numbers ;
Between 1 - 20 are -
2 , 3 , 5 , 7 , 11 , 13 , 17 , 19
Mean,
= Sum of the observations / No. of observations
Sum = 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19
= 77
Number of Observations = 8
Mean = 77 / 8
Mean = 9.625
Median ;
2 , 3 , 5 , 7 , 11 , 13 , 17 , 19
Number of observations = 8
8 is even
Median of even no. of observations ;
Median = n + 1 / 2th term
Median = 8 + 1 / 2
= 9 / 2
= 4.5th observation
= 7 or 11
= 9.6
Step-by-step explanation:
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