We are here with you hands in hands to facilitate your learning & don't appreciate the idea of copying or replicating solutions. Read More>>

# www.vustudents.ning.com

 www.bit.ly/vucodes + Link For Assignments, GDBs & Online Quizzes Solution www.bit.ly/papersvu + Link For Past Papers, Solved MCQs, Short Notes & More

Dear Students! Share your Assignments / GDBs / Quizzes files as you receive in your LMS, So it can be discussed/solved timely. Add Discussion

Assignment no.1 (Lessons 1 – 15)

Question 1:                                                                                                                Marks: 3+2=5

a)      The mean age of a group of 100 persons was found to be 32.02. Later it was discovered that age 57 was misread as 27. Find the corrected mean?

b)      The sum of deviations from an arbitrary value A = 15 for 10 values is 25, find the A.M.

Question 2:                                                                                                               Marks: 3+3=6

a)      The mean of 200 items is 48 and their S.D is 3. Find the values of  and

b)      A vehicle going up from Islamabad to Murree consumes petrol at the rate of One liter per 8 km, while going down from Murree to Islamabad one liter per 12 km. Find the average rate of consumption between the two cities.

Question 3:                                                                                                                         Marks: 4

The S.D of the symmetrical distribution is 5. What must be the value of, and also explain that the distribution will be?

(i)                 Meso-kurtic

(ii)               Platy-Kurtic

(iii)             Leptokurtic

+ How to Join Subject Study Groups & Get Helping Material?

+ How to become Top Reputation, Angels, Intellectual, Featured Members & Moderators?

+ VU Students Reserves The Right to Delete Your Profile, If?

Views: 21428

.

+ http://bit.ly/vucodes (Link for Assignments, GDBs & Online Quizzes Solution)

+ http://bit.ly/papersvu (Link for Past Papers, Solved MCQs, Short Notes & More)

Attachments:

### Replies to This Discussion

Question 1: b)      The sum of deviations from an arbitrary value A = 15 for 10 values is 25, find the A.M. Fall 2015_STA301_ 1ST Assignment  Solution

Attachments:

yh open ni ho rahi

yh kia to hai

bad main yahn se cut kr k ms word main past krna hai

mth 202 ki announcement main bhot acha tariqa likha howa hai check krnay ka....

Announcement check karo uski

zain nasar welldone thanks for sharing

hello, Can you please guide me hot to solve this Assignemnt. i was untouch from this subject from the start. let me know how to install the mathtype>?

Our main purpose here discussion not just Solution

We are here with you hands in hands to facilitate your learning and do not appreciate the idea of copying or replicating solutions.

apne comlete file send kro

Mean of 200 items is 48 and their standard deviation is 3. Find the sum of all the items and the sum of the squares of all the items.

Solution:

Mean of 100 items (x̄) = 48

Standard deviation (σ) = 3

here we have to answer for two questions that is sum of all items (Σ x) and sum of squares all items (Σ x²).

x̄ = (Σ x/n)

48 = (Σ x/200)

Σ x = 200 x 48

= 9600

Sum of all items = 9600

To find sum of squares of all items, we have to find variance (σ²).

σ² = (Σ x²/n) - (Σ x/n)²

(3)² =  (Σ x²/200) - (9600/200)²

(3)² =  (Σ x²/200) - (48)²

9 = (Σ x²/200) - 2304

9 + 2304 = (Σ x²/200)

2313 = Σ x²/200

Σ x² = 2313(200)

Σ x² = 462600

Sum of squares of all items = 462600

.