sta301 mid term current paper spring 17 May 2011

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Total questions: 23
MCQs: I think 18
Long: I think 5

The exact question which asked in my papers are:

The probability of drawing a ‘jack card ‘from 52 playing cards is:
► ►
► ►

If all the values fall on the same straight line and the line has a positive slope then what will be the value of the correlation coefficient ‘r’:
► 0 ≤ r ≤ 1
► r ≥ 0
► r = +1
► r=-1

If a curve has a longer tail to the right, it is called:
► Positively skewed
► Negatively skewed
► J-shaped
► Symmetric

Which one of the following is not included in measures of central tendency?
► Quartile deviation
► Harmonic mean
► Geometric mean
► Arithmetic mean

Which of the following is not based on all the observations?
► Arithmetic Mean
► Geometric Mean
► Harmonic mean
► Mode

What is the Standard Deviation of 7, 7, 7, 7, 7, 7, 7
49
1
0
7

What are simple events and what are compound events? [3Marks]



a. For a particular data of 5 pair of values: [3 Marks]

The fitted regression line is:
Y= - 0.5 + 0.5 x
Find the standard error of estimate (Sy.x); what doest it indicates?
This is question already given to us in our 2nd Assignment. Only the regression line values were change. Rest of values were same.
Be careful I am giving the assignment solution not the asked question.














When a pair of dice is rolled, make the sample space and find the probability
a. Total of 7
b. For all sum greater than 6 [5 Marks]


That question was also given in second assignment.


The data was given. Calculate Standard Deviation and Variance [5 marks]
I forget the data. But the calculation which is required is so simple. Everything was given. [Standard Deviation for group