Question

the following observation 40, 42, 45, x-1, x+1, 51, 54, 62 are arranged in ascending order. if the median is 49, find the value of 'x'. find the mean of the above observation. ​

Answer 1

Answer:

x=49

Mean = 49

Step-by-step explanation:

40, 42, 45, x-1, x+1, 51, 54, 62

Median = middle terms

=$\frac{(x-1)+(x+1)}{2}=49$

$\frac{2x}{2}=49\\ x=49$

Therefore seies is,

40, 42, 45, 48, 50, 51, 54, 62

Mean = $\frac{40+42+45+48+50+51+54+62}{8}$

Mean = 392/8

Mean = 49

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