ANALYSIS

Understanding and Managing Marketing Information

Understanding and Managing Marketing Information

Task 1

 

Batch 3: Production Run A

 

 

Lifespan in Hours

Number of Bulbs (f)

(x-mean)

(x-mean)^2

Under 1100

5

-9

81

1100 and under 1200

0

-14

196

1200 and under 1300

4

-10

100

1300 and under 1400

10

-4

16

1400 and under 1500

14

0

0

1500 and under 1600

40

26

676

1600 and over

27

13

169

Total

100

1238

Mean

= 100/7 = 14

Standard Deviation

1238

7-1

Standard Deviation

206

Coefficient of Variation

206

14

Coefficient of Variation

14

Task 2

 

Batch 4: Production Run B

 

 

Lifespan in Hours

Number of Bulbs (f)

(x-mean)

(x-mean)^2

Under 1100

5

-12

144

1100 and under 1200

1

-16

256

1200 and under 1300

8

-9

81

1300 and under 1400

43

26

676

1400 and under 1500

0

-17

289

1500 and under 1600

37

20

400

1600 and over

26

9

81

Total

120

1927

Mean

= 120/7 = 17

Standard Deviation

1927

6

Standard Deviation

321

Coefficient of Variation

321

17

Coefficient of Variation

19

Task 3

a)

In context of the assumption that the manufacturer is the dominant market leader who faces an inelastic ...