Question

which companies spend the most money and Anwebsite maintains of the opening complet 2014. Com Aspent more than anythan whopping 14.30 hits second place was Company which spent $2.5 billion. The top 12 companies and the amount spent an advertising in billions of dollars are as follo Advertig (5 Advertising Company A G 2219 H C 201 1 D 1 24 L (a) What is the mean amount in billet (und your answer + bilion (b) What is the median amount in bloot on adverteng - c) What are the read the wonder 5

Answer 1

a)

	Advertising (x)
	4.5
	2.58
	2.91
	2.16
	2.24
	2.34
	2.39
	2.05
	2.59
	1.77
	1.76
	2.18
Total	29.47

Here

n = 12

T Mean 29.47 12 = 2.4558333 x 2.46 п

The mean amount spent on advertising is $2.46 billion.

b)

For finding median, first arrange the data in ascending order and use the formula below:

For n = odd

For n = even

The data , in ascending order, are given below:

Advertising (x)
1.76
1.77
2.05
2.16
2.18
2.24
2.34
2.39
2.58
2.59
2.91
4.5

For the given problem,

n = 12 ( even)

So,

$=\frac{\left ( \frac{12}{2} \right )^{th}value+\left ( \frac{12}{2} +1\right )^{th}value}{2}$

  

2.24+2.34 2

  $=2.29$

The median amount spent on advertising is $2.29 billion.

c)

The first quartile is given by

$Q_{1}=1\left ( \frac{n+1}{4} \right )^{th }value$

  

th 12 +1 2+-) value

$=\left ( 3 \right )^{th }value+0.25(4^{th}value-3^{th}value)$

2.05 +0.25(2.16-2.05)

= 2.05 +0.0275

= 2.0775

  $\approx 2.08$

The first quartile is $2.08 billion

The third quartile is given by

$Q_{3}=3\left ( \frac{n+1}{4} \right )^{th }value$

  

th = 3 (12+-) value

$=3\left ( \frac{13}{4} \right )^{th }value$

  

  $=25875$

  

The third quartile is $2.59 billion

Depending on the data given, company A spend the most money on advertising.