If the mean of 16;14;x;23;20is18 find the value of x
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formula is =£x/n. 73+x/5=18
73+x=90
x=90-73=17
73+x=90
x=90-73=17
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mean = sum of all observation ÷ number of observation
( 16 + 14 + x + 23 + 20 ) / 5 = 18
73 + x = 18 × 5
73 + x = 90
x = 90 - 73
x = 17
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