STA301 Statistics and Probability MIDTERM solve current paper Spring 12 May 2011

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Question No: 1 ( Marks: 1 ) - Please choose one
10! =………….

► 362880
*► 3628800
► 362280
► 362800

Question No: 2 ( Marks: 1 ) - Please choose one
If a player well shuffles the pack of 52 playing card, then the probability of a black card from 52 playing cards is:
►

*►
►
►

Question No: 3 ( Marks: 1 ) - Please choose one
The probability of drawing a ‘jack card ‘ from 52 playing cards is:

►
*►
►
►

Question No: 4 ( Marks: 1 ) - Please choose one
Which dispersion is used to compare variation of two series:

► C.V.
*► Q.D.
► M.D.
► S.D.

Question No: 5 ( Marks: 1 ) - Please choose one
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

Question No: 6 ( Marks: 1 ) - Please choose one
In a regression line Y= a + bX, the value of the correlation coefficient will be zero if:

*► Intercept a = 0

► Intercept a ≠ 0
► Slope b = 0

► Slope b ≠ 0


Question No: 7 ( Marks: 1 ) - Please choose one
When two coins are tossed the probability of at least one head is:
► 1/4
* ► 3/4
► 2/4
► 4/4

Question No: 8 ( Marks: 1 ) - Please choose one
Which one of the following measurement does not divide a set of observations into equal parts?
► quartiles
► deciles
► percentiles
*► standard deviations

Question No: 9 ( Marks: 1 ) - Please choose one
In the model Y = mX + a, Y is also known as the:

► Predictor variable
► Independent variable
► Predicted variable
► Explanatory variable