Ireally don't understand this part and the page is dew in like 4 hours. someone me with these two questions. id really appreciate it.

Step-by-step explanation:

Find the ratio.

x / y --) 8/20 = 2/5

Find y.

2/5 x ?/? = 42/y ; 42/2 = 21

2/5 x 21/21 = 42/105

42/105 = x/y ---) x = 42 and y = 105

Find the ratio.

x / y --) 12/8 = 3/2

Find y.

3/2 x ?/? = x/12 ; 12/2 = 6

3/2 x 6/6 = 18/12

18/12 = x/y --) x = 18 and y = 12

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.