Question

Q.no.1 The number of cars crossing a certain bridge in a big city in 10 intervals of five minutes each was recorded as follows: J 3.18 25. 15, 18. 30. 20. 20. 12, 9. 16, 15. Calculate, () the arithmetic mean, (ii) the median and (ii(} the geometric mean.​

Answer 1

Answer:

Step-by-step explanation:

The Formula for Arithmetic Average

\begin{aligned} &A = \frac{1}{n} \sum_{i =1}^n a_i = \frac{a_1 + a_2 + \dotso + a_n}{n} \\ &\textbf{where:} \\ &a_1, a_2, \dotso, a_n=\text{Portfolio returns for period } n \\ &n=\text{Number of periods} \\ \end{aligned}

​

A=

n

1

​

i=1

∑

n

​ a

i

​ =

n

a

1

​ +a

2

​ +…+a

n

​

​

where:

a

1

​ ,a

2

​ ,…,a

n

​ =Portfolio returns for period n

n=Number of periods

​