Question

ch 2 a violin student records the number of hours she spends practicing during each of nine consecutive weeks. 6.2 5.0 4.3 7.4 5.8 7.2 8.4 1.2 6.3 what is the median number of hours spent practicing per week during this period? 5.76 hours 6.20 hours 8.40 hours 6.15 hours question 19 1 pts ch 2 the five - number summary of a distribution consists of the smallest observation, the first quartile, the mean, the third quartile, and the largest observation, written in order from smallest to largest. true false

Explanation:

Step1: Arrange data in ascending order

$1.2,4.3,5.0,5.8,6.2,6.3,7.2,7.4,8.4$

Step2: Find the median position

Since $n = 9$ (odd - numbered data set), the median is at the $\frac{n + 1}{2}=\frac{9+1}{2}=5$ - th position.

Step3: Determine the median

The 5 - th value in the ordered data set is $6.2$.

For the second question:
The five - number summary consists of the minimum, first quartile ($Q_1$), median, third quartile ($Q_3$), and maximum. It does not include the mean. So the statement is false.

Answer:

Question 1: 6.20 hours
Question 2: False