Answer
See below.
Work Step by Step
The midrange is the sum of the minimum and maximum data value divided by $2$.
The mode of $n$ numbers is the number or numbers that appear(s) most frequently. If all items appear the same number of times, then there is no mode.
The median of $n$ numbers is the middle number of the numbers when they are in order (and the mean of the middle $2$ numbers if $n$ is even).
The mean of $n$ numbers is the sum of the numbers divided by $n$.
a) Hence the mean: $\frac{12\cdot2+16\cdot7+16\cdot12+16\cdot17+10\cdot22+11\cdot27+4\cdot32+3\cdot37+3\cdot42+3\cdot47}{94}\approx17.27$
b) Here we have $94$ items, thus the median will be the mean of the $47$th and the $48$th item, which according to the table is: $(17+17)/2=17$
c) Hence the modes: $7,12,17$
d) Hence the midrange: $\frac{12+47}{2}=29.5$
