Children 4 years old or younger can ride the train for free. Write an inequality that expresses who can ride the train for free.

4 year olds AND younger can ride the train for free

Step-by-step explanation:

x<=4

x is less than or equal to four

children less than or equal to four can ride the train for free

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.