Given
Number of animals listed in one minute by 10 normal adults.
11, 13, 22, 14, 24, 17, 20, 21, 23, 17
Find
a) Mean
b) Median
c) Mode
Explanation
mean is given by sum of observations divided by number of observations.
so , mean =
[tex]\begin{gathered} mean=\frac{11+13+22+14+24+17+20+21+23+17}{10} \\ \\ mean=\frac{182}{10}=18.2 \end{gathered}[/tex]to find median , we need to arrange data in ascending order.
so ,
11 , 13 , 14 , 17 , 17 , 20 , 21 , 22 , 23 , 24
number of data is 10 which is an even number .
so ,
,median =
[tex]\begin{gathered} \frac{n}{2},\frac{n}{2}+1 \\ \\ \frac{10}{2},\frac{10}{2}+1 \\ \\ 5th,6th \end{gathered}[/tex]median =
[tex]\begin{gathered} \frac{5th+6th}{2} \\ \\ \frac{17+20}{2} \\ \\ \frac{37}{2} \\ \\ 18.5 \end{gathered}[/tex]mode = 17 because it occurs maximum times in data set.
Final Answer
Hence ,
mean = 18.2
median = 18.5
mode = 17