the data set represents the number of minutes dan spent on his homework each night. 30, 35, 35, 45, 46, 46…

the data set represents the number of minutes dan spent on his homework each night. 30, 35, 35, 45, 46, 46, 52, 55, 57 which box - plot correctly represents the data?

the data set represents the number of minutes dan spent on his homework each night. 30, 35, 35, 45, 46, 46, 52, 55, 57 which box - plot correctly represents the data?

Answer

Explanation:

Step1: Arrange data in order

$30, 35, 35, 45, 46, 46, 52, 55, 57$

Step2: Find the minimum

The minimum value is $30$.

Step3: Find the first - quartile ($Q_1$)

There are $n = 9$ data points. The position of $Q_1$ is $\frac{n + 1}{4}=\frac{9+1}{4}=2.5$. So, $Q_1=\frac{35 + 35}{2}=35$.

Step4: Find the median ($Q_2$)

The position of the median is $\frac{n + 1}{2}=\frac{9+1}{2}=5$. So, $Q_2 = 46$.

Step5: Find the third - quartile ($Q_3$)

The position of $Q_3$ is $\frac{3(n + 1)}{4}=\frac{3\times(9 + 1)}{4}=7.5$. So, $Q_3=\frac{52+55}{2}=53.5$.

Step6: Find the maximum

The maximum value is $57$.

A box - plot has a box from $Q_1$ to $Q_3$ with a line at the median $Q_2$, and whiskers from the box to the minimum and maximum values.

The box should start at $35$, end at $53.5$, have a line at $46$, and whiskers going to $30$ and $57$.

Answer:

We need to visually inspect the given box - plots and find the one with a minimum of $30$, $Q_1 = 35$, median of $46$, $Q_3=53.5$, and maximum of $57$. Without the ability to label the options, you would look for a box - plot with the left - hand end of the box at $35$, a vertical line in the box at $46$, the right - hand end of the box at approximately $53.5$, and whiskers extending to $30$ and $57$.