Provide an appropriate response.
-The weights (in pounds)of 30 preschool children are listed below. Which weights are below the 25th percentile? $$\begin{array} { l l l l l l l l l l }
25 & 25 & 26 & 26.5 & 27 & 27 & 27.5 & 28 & 28 & 28.5 \
29 & 29 & 30 & 30 & 30.5 & 31 & 31 & 32 & 32.5 & 32.5 \
33 & 33 & 34 & 34.5 & 35 & 35 & 37 & 37 & 38 & 38
\end{array}$$
A)25, 25, 26, 26.5, 27, 27, 27.5
B)25, 25, 26, 26.5, 27, 27, 27.5, 28, 28
C)25, 25, 26, 26.5, 27, 27
D)25, 25, 26, 26.5

Question

Provide an appropriate response.
-The weights (in pounds)of 30 preschool children are listed below. Which weights are below the 25th percentile? $$\begin{array} { l l l l l l l l l l } 
25 & 25 & 26 & 26.5 & 27 & 27 & 27.5 & 28 & 28 & 28.5 \
29 & 29 & 30 & 30 & 30.5 & 31 & 31 & 32 & 32.5 & 32.5 \
33 & 33 & 34 & 34.5 & 35 & 35 & 37 & 37 & 38 & 38
\end{array}$$
A)25, 25, 26, 26.5, 27, 27, 27.5
B)25, 25, 26, 26.5, 27, 27, 27.5, 28, 28
C)25, 25, 26, 26.5, 27, 27
D)25, 25, 26, 26.5

Quizplus · Accepted Answer

To find the 25th percentile, first arrange the data in ascending order (which is already done). With 30 data points, the 25th percentile position is at 0.25 * (30 + 1) = 7.75, rounding down to the 7th position. Therefore, the weights below the 25th percentile are the first 7 weights in the list, which are 25, 25, 26, 26.5, 27, 27, 27.5.

Provide an Appropriate Response A)25, 25, 26, 26