Question

the accompanying table pertains to schedule commercial carriers for a certain country. a) find the mean number of departures (round to the nearest tenth as needed) b) find the median of departures (round to the nearest decimal) c) find the mode if there's any

Answer 1

To find the mean of departures, we add up all the data and divide by the amount of years, as following:

`\begin{gathered} (11.1+11.3+10.5+10.3+9.9+10.8+11.1+10.5+10.8+10.5)/(10) \\ \rightarrow10.7 \end{gathered}`

To calculate the median:

1. Organize the data in numerical order:

`\begin{gathered} 9.9 \\ 10.3 \\ 10.5 \\ 10.5 \\ 10.5 \\ 10.8 \\ 10.8 \\ 11.1 \\ 11.1 \\ 11.3 \end{gathered}`

2. Divide the number of data by 2:

`(10)/(2)=5`

3. Go to the number in that position and average it with the next one to get the median:

`(10.5+10.8)/(2)\rightarrow10.7`

The median is 10.65

The number that appears most often is 10.5

Thereby, the mode is 10.5