The Following Data Represent the Weights (In Kilograms) of a Sample

The following data represent the weights (in kilograms) of a sample of 30 horses: Weight
$\begin{array} { l } 165 \\175 \\150 \\155 \\173 \\149 \\145 \\153 \\153 \\153 \\152 \\145 \\164 \\143 \\170 \\175 \\148 \\174 \\171 \\156 \\166 \\168 \\152 \\150 \\173 \\168 \\146 \\155 \\172 \\159\end{array}$ Calculate the 3rd and 8th deciles of the data.