Question

the flight times, in hours, for six flights between two locations are given. find the mean flight time. 6.0, 6.1, 7.0, 7.6, 7.2, 7.5
the mean flight time is hrs.

Explanation:

Step1: Recall mean formula

The mean $\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}$, where $x_{i}$ are the data - points and $n$ is the number of data - points. Here $n = 6$, and $x_1=6.0,x_2 = 6.1,x_3=7.0,x_4=7.6,x_5=7.2,x_6=7.5$.

Step2: Calculate the sum of data - points

$\sum_{i = 1}^{6}x_{i}=6.0 + 6.1+7.0+7.6+7.2+7.5=41.4$.

Step3: Calculate the mean

$\bar{x}=\frac{41.4}{6}=6.9$.

Answer:

$6.9$