Find the mean and median of all composite numbers between 90 and 100
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Mean
mean =sum of observation ÷no of observation
=91+92+93+94+95+96+98+99÷8
=758÷8
Mean=94.75
Median
median=avg. of n÷2 and n÷2+1 the term
=avg.of 8÷2 and 8÷2+1th term
=avg.of 4th and 5th term
=avg.of 94 and95
=94+95÷2
Median=141.5
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