If the average (arithmetic mean) of 3, 7, 10, and x is 7, then what is the median of 3,7,10, and x?
For which set of numbers do the average, median, and mode all have the same value?
ID50(median infectious dose,半数感染量)
LD50(median lethal dose,半数致死量)
s and t are positive integers whose average (arithmetic mean) is 9. If s < t, what is the median of all possible values of s?
半数致死量(median lethal dose,LD50)
For which set of numbers do the average, median, and mode all have the same value?
s and t are positive integers whose average (arithmetic mean) is 9. If s < t, what is the median of all possible values of s?