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Assignment # 2 (Lessons 10-15)

Question 1:                                                                                                                        (Marks: 3+5=8)

a)      The fourth mean moment of a symmetric distribution is 243. What would be the value of the standard deviation in order that the distribution may be meso-kurtic?

b)      Two candidates X and Y at the B.A (Hons.) Examination obtained the following data.

Candidate X

Candidate Y

= 43.2

= 20.5

S.D = 24.25

S.D = 15.6

 

Which of the candidate showed a more consistent performance?

Question 2:                                                                                                             (Marks: 2+5=7)

  1. If coefficient of skewness = 0, then what would you say about the shape of the distribution?
  2. The following data were computed from personnel records of a manufacturing firm:

             X = Number of years of service

            Y = weekly wage rate

          n = 23; ∑X = 2433; ∑Y = 4254, ∑  = 281019;  = 841786 and = 482788

 If the correlation coefficient indicates that there does exist a relationship between X and Y,                                    compute the least squares line of regression Y = a + b X.

 

-End- 

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Thnx Tariq bhai. 

Q no1 main m4/m2=b3 kesy ho gaie

and Q2 main first part es ki kesi ko kuch samaj aai hy tu plz bta day kuch mughy b plzzzz

q no 2 ka (b) part kasy solve kia h plz tell me i m in confusion

sis main ne explain kiya hai agay check karain ap

Q.2 B k answer ghalat hai....

kya mistake hai ?????????

sultan bro agar ap kisi k Q ko wrong kahtay ho to plzzzzz sath mistake b mention kar diya karain nai to saray student confuse ho jatay hain

sultan bhai agr aapko waqai koi mistake mili hy to aap ko wo mention b krni chahiye aor oska solution b dena chahiye otherwise baqi students confuse ho jatey hn..

plz discuss...

i thnk scnd waly me   cftn ka  formula lgy ga    n values to sb hi  gvn hn

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