Find the missing number 4 81 18 36 49 42 64 25 ?

Step-by-step explanation:

what happen you find the square root of the two number then you find their product

square root of 4=2

square root of 81= 9

hence, 9x2=18

therefore,

square root of 64= 8

square root of 25= 5

hence, 5x8= 40

giving us the next number

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.