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Total questions were 26.
MCQs were 20, from past paper and very easy.
Do learn all the concepts of Probability.

Subjective questions were 6.
Two of two marks, Two of 3marks and 2 of Five marks.

Complete the formula for Conditional probability P (A/B) = P( A intersection B) / ? (2marks)
what is "five number summary" (2marks)

P(A) = 0.60, P(B) = 0.40 P(A intersecrion B) = 0.24, Find P(AUB) = ? (3marks)
Find the skewness, mean and mode were given? (3marks)

Find the two moment mean of the following ungrouped data.(5marks)
Two dice are rolled write it's sample space and what is the probability that 5 will occur (5 marks)

Do pray for my next exam :)

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Replies to This Discussion

nice keep it up but you should post on respective page

I have, haven't I? :/

dear zulfiqar zakki sta301 is too easy subject

how come?

Maryab thanks for sharing 

Attention Related Mid Term papers Spring 2013: All Fellows You don’t need to go any other site for current Mid Term papers Spring  2013, Because All discussed data/sharing of our members in this discussion are going from here to other sites. You can judge this at other sites yourself. So don’t waste your precious time with different links.

thanks

t

Todays STA301 solved paper 25 may 2013

 

 

For a positively skewed distribution m3 will be:

► Positive (Page 119)

► Negative

► Zero

► 1

 

 

Which one is the formula of range?

► xm-xo

► 0 m x x 

► 0 2 m x x 

► (Page 80) 0 2 m x x 

 

 

Which one of the following measurement does not divide a set of observations into equal parts?

► Quartiles

► Deciles

► Percentiles

► Standard deviations

 

 

The number of ways in which 4 books can be arranged

► 4

► 6

► 12

► 24

 

 

If X and Y are independent, then Var(X-Y) is equal to:

► Var(X)-Var(Y)

► () () VarXVarY

► () VarX Y

► Zero

 

 

If any value in the data is zero, then it is not possible to have:

►Harmonic Mean

►Arithmetic Mean

►Median

►Mode (rep)

 

 

A coin is tossed 3 times then, the number of sample points in the sample space is:

►3

►8 (Page 145)

►6

►4

 

 

The approximate number of observations in a set of data covered by the interval, Median Q.D are:

►50 per cent (Page 84)

►68.5 per cent

►95.4 per cent

►99 per cent

 

 

In a set of 10 values all the values are 5, what is the value of 5th Decile:

►2

►5

►10

►20

 

 

A population that can be defined as the aggregate of all the conceivable ways in which a specified event can happen is known as:

►Infinite population

►Finite population

►Concrete population

►Hypothetical population (Page 12)

 

 

A histogram consists of a set of adjacent rectangles whose bases are marked off by:

►Class boundaries (Page 32)

►Class limits

►Class marks

►Class frequency

 

 

For positively skewed distribution

Mean…….Median…….Mode:

►=

►/p>

►> Click here for detail

► 

 

 

How to find relative frequency distribution:

► Divide the class frequencies in half       

► Divide the class frequency by the number of observations      

► Find the difference between consecutive lower class limits      

► Count the number of observations in the class   

 

Which of the following is NOT a possible probability?

► 25/100

-1

► 0

► 1

 

 

Data collected from Ministry of food is:

       ► Ungrouped data

       ► Secondary data

       ► Primary data

       ► Arrayed data

 

A frequency polygon is obtained by plotting the class frequencies against what?

Select correct option:

Class bounday

cumulative frequency

relative frequency

mid point

 

Subjective

 

Q.1   Find out the missing element P(A|B) = ?/P(B)     ( Marks: 2 )

        

         P(A|B) = P(A∩B) /P(B)

 

Q.2   What is meant by b in the linear regress line y= a + bx?   ( Marks: 2 )

 

         b represent slope of the line.  

 

Q.3   A card is chosen from a deck of 52 cards. What is the probability if it is a

a)      Diamond

b)     Spade

c)      Diamond or Spade     ( Marks: 3 )

 

         n(S) = 52

         Diamond cards = n(A) = 13 and Spade = n(B) = 13

a)      P(A) = n(A)/n(S) = 13/52

b)      P(B) = n(B)/n(S) = 13/52

c)      P(AUB) = P(A) + P(B)

                                   = 13/52 + 13/52 = 26/52 = 1/2

 

 

Q.4   Consider the following values of moments:

        = 0, = 20.5, = 35.2 and = 1204

         Find the coefficient of skewness and kurtosis ().  ( Marks: 3 )

        

        

       

 

       

       

 

Q.5   Compute the mean deviation from mean for the following data. (Where Mean X= 18.6 )

X 14.5 16.5 18.5 20.5 22.5

Frequency 3 5 11 7 3 ( Marks: 5 )

 

X

F

f

14.5

3

-4.1

4.1

12.3

16.5

5

-2.1

2.1

10.5

18.5

7

-0.1

0.1

1.1

20.5

11

1.9

1.9

13.3

22.5

3

3.9

3.9

11.7

SUM

29

 

 

48.9

 

 

 

Q.6   A husband and wife appear in an interview for two vacancies in the same post. The probability of husband’s selection is 2/7 and probability of wife’s selection is 3/5. ( Marks: 5 )

What is the probability that only husband is selected?

 

Attachments:

STA301 VU Current Midterm Spring 2013 Papers

STA301 VU Current Midterm Spring 2013 Papers

Total Questions: 26

Sample point with example

Calculate Standard Deviation and Variance

What is Coefficient of determination?

The Sample Space for tossing dice two times find probability (Handouts Page 147 Example 3)

today's paper of sta301........

very easy for me...about 10 question was of playing cards exAMLE....another example of pair die and tossed dice were also in mcqs. 

all MCQs were repeated and came from this forum helpline..but 2 long questions were lil difficult.  

overall paper was gud.

thanx for the past solved papers. it works.



Read more: Today's Paper - Virtual University of Pakistan http://vustudents.ning.com/group/sta301statisticsandprobability/for...

sta301

two fair dice are rolled make sample space and what is the sum of outcome that 7.     5marks

why stadndard deviation is better than mean deviation. 2marks

values are given find moments ratio  b1 and b2.          3marks

AunionB and AintersectionB find           2marks.

1 qo to calculate mean mode and median

today's paper of sta301........

very easy for me...about 10 question was of playing cards exAMLE....another example of pair die and tossed dice were also in mcqs. 

all MCQs were repeated and came from this forum helpline..but 2 long questions were lil difficult.  

overall paper was gud.

thanx for the past solved papers. it works.



Read more: Today's Paper - Virtual University of Pakistan http://vustudents.ning.com/group/sta301statisticsandprobability/for...

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