STA301 Statistics and Probability 2 assignment solution fall 2010

**IQ-test** · 11-22-2010, 04:47 PM

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STA301 Statistics and Probability 2 assignment solution announcement
Assignment No.2 (Course STA301)
Fall 2010 (Total Marks 30)

Deadline
Your Assignment must be uploaded/ submitted before or on

23:59 29th November, 2010

(STUDENTS ARE STRICTLY DIRECTED TO SUBMIT THEIR ASSIGNMENT BEFORE OR BY DUE DATE. NO ASSIGNMNENT AFTER DUE DATE WILL BE ACCEPTED VIA E.MAIL).
Rules for Marking
It should be clear that your Assignment will not get any credit IF:
• The Assignment submitted, via email, after due date.
• The submitted Assignment is not found as MS Word document file.
• There will be unnecessary, extra or irrelevant material.
• The Statistical notations/symbols are not well-written i.e., without using MathType software.
• The Assignment will be copied from handouts, internet or from any other student’s file. Copied material (from handouts, any book or by any website) will be awarded ZERO MARKS. It is PLAGIARISM and an Academic Crime.
• The medium of the course is English. Assignment in Urdu or Roman languages will not be accepted.
• Assignment means Comprehensive yet precise accurate details about the given topic quoting different sources (books/articles/websites etc.). Do not rely only on handouts. You can take data/information from different authentic sources (like books, magazines, website etc) BUT express/organize all the collected material in YOUR OWN WORDS. Only then you will get good marks.

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Objective(s) of this Assignment:

• The assignment is being uploaded to strengthen the students’ concepts about skweness and kurtosis.

• The assignment is uploaded to depict the role of moments to describe the distributions.

• This will strengthen the concepts about the simple linear regression and its applications.

Assignment No.2 (Lessons 12 to 18)
Question 1 2 5=10Marks
a) On which basis Chebychev’s inequality and empirical rules are dissimilar?
b) Why we calculate measure of skewness and kurtosis?
c) For what purpose simple linear equation is used? Also explain the drawback of the simple linear equation.
d) Differentiate between an experiment and a random experiment.
e) In deterministic experiment, can we apply probability theory? Explain.
Question 2 3+2+5=10Marks
a) Suggest the skewness of the data from the following information.

b) For a certain data:
Mean = 62.83, Median = 61.5
And Standard Deviation = 8.516
Find mode and Pearson’s coefficient of skewness
c) Find the first four moments about mean from the following data.
X= 14, 20, 22, 34, 30, 18, 26, 28, 16, 25
Question 1 8+2+=10Marks
a) For following data calculate
i. simple linear equation Y on X
ii. simple linear equation X on Y
iii. From the slops calculated in above cases, calculate coefficient of correlation.
Hight=X 5.6 5.2 5.5 6.0 6.1 5.0 5.4 5.2 5.3 5.6 5.1
Weight=Y 67 65 66 75 69 62 64 68 65 65 62

b) How many different words can be formed from the word ‘BLOGOSPHERE’?
Solution will be updated soon.