The phone brands OnePlus, Vivo and Oppo are owned by BBK Electronics. Table 4.1.G represents the data for the sales (in Lakhs) of OnePlus and BBK Electronics by different dealers in Chennai and Punjab in the year 2010.

Table Q4.1.G: Sales Data
Dealer’s Location	OnePlus	BBK Electronics
Chennai	6	10
Punjab	2	10
Chennai	1	11
Punjab	1	11
Chennai	2	10
Punjab	1	11
Chennai	6	16

Are you able to see 7 dealer’s location and the sales of OnePlus and BBK Electronics?

Yes

2. What is the population standard deviation of sales of OnePlus?(Enter the answer correct to 2 decimal accuracy)

2.11

3.What is the sample standard deviation of sales of BBK Electronics?(Enter the answer correct to 2 decimal accuracy)

2.14

4.What is the sample co-variance between the sales of OnePlus and BBK Electronics?(Enter the answer correct to 2 decimal accuracy)
2.42

5.What is the correlation coefficient between the sales of OnePlus and BBK Electronics?(Enter the answer correct to 2 decimal accuracy)

0.49

6.What can you say about the linear relationship between the sales of OnePlus and BBKElectronics?(More than one option can be correct)

Weak

Positive

Moderate

Negative

Strong

Absence of linear relationship

7. Is the sales of OnePlus strongly influenced by the location of dealer?

Yes

8. 651 college students are classified according to their intelligence and economic conditions and the results are as follows.

Table Q4.2.G: Intelligence Level and Economic Conditions
Economic Conditions	Intelligence level
	Bright	Average	Dull	Borderline
Good	50	93	64	127
Poor	59	90	88	80

Are you able to see all the eight values in a contigency Table Q4.2.G?(Type 0 for No and type 1 for Yes)

9. What proportion of total students are dull? (Enter the answer correct to 2 decimal accuracy)

0.23

10. What proportion of total students are in poor economic conditions? (Enter the answer correct to 2 decimal accuracy)

0.48

11. What proportion of students of good economic conditions are borderline? (Enter the answer correct to 2 decimal accuracy)

0.38

12. What percentage of bright students are in poor economic conditions? (Enter the answer correct to 2 decimal accuracy)

54.12

13. What percentage of average students are in good economic conditions? (Enter the answer correct to 2 decimal accuracy)

50.81

Statistics Week 4 Graded Assignments IIT Madras – Students Community

Statistics Week 4 Graded Assignments IIT Madras