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MTH302 - Business Mathematics & Statistics Quiz No. 6 Solution and Discussion Spring 2014 of Virtual University (VU) Due Date: August 07, 2014

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Q.   The square of the correlation coefficient is called the

• coefficient of determination
• variance
• covariance
• big R

Q.   nCn =___________

nC0

2

3

None of these

Q.   The moving averages of the Prices 90,70,30,110 are

63.33, 70

73.33, 80

45.45,  68

65.50, 75

Q.   The sum of squares of the deviations of the observed values from the regression line is

zero

least or minimum

maximum

none of these

Q.   In a simple linear regression analysis, the correlation coefficient (r) and the slope (b1) have the same sign.

Always

Sometimes

Never

Most of the times

Q.     A pattern of variation of a time series that repeats every year is called:

Cyclical

Seasonal

Trend

Secular

Q.    An arrangement of all or some of a set of objects in a definite order is called

Combination

Permutation

Q.    The square of the correlation coefficient is called the

coefficient of determination

variance

covariance

big R

Quiz Start Time: 06:07 PM

Question # 1 of 10 ( Start time: 06:07:48 PM ) Total Marks: 1
The estimated number of visitors (�00s) at the holiday resort was during year 2001 to 2005 were 31, 49,74,62 and 65 respectively. Then 3-year moving average of visitors are
Select correct option:
62.67, 51.45,85
82.03, 63.64,73
51.33, 61.67, 67
49.32, 32.73,93

Quiz Start Time: 06:07 PM
Time Left 87
sec(s)
Question # 2 of 10 ( Start time: 06:09:08 PM ) Total Marks: 1
What is the value of nCn? (C for combination)
Select correct option:
n
0
1
None of these.

Quiz Start Time: 06:07 PM
Time Left 89
sec(s)
Question # 3 of 10 ( Start time: 06:09:53 PM ) Total Marks: 1
A fitted regression equation is given by Yhat = 20 + 0.75X. What is the value of the residual at the point X=100, Y=90?
Select correct option:
-5
5
95
None of these

Quiz Start Time: 06:07 PM
Time Left 88
sec(s)
Question # 4 of 10 ( Start time: 06:11:18 PM ) Total Marks: 1
The moving averages can be used for -------------.
Select correct option:
mode
forecasting purposes
Middle value.
Median

Quiz Start Time: 06:07 PM
Time Left 88
sec(s)
Question # 5 of 10 ( Start time: 06:12:32 PM ) Total Marks: 1
The moving averages of the Prices 30, 45, 90, 110 are
Select correct option:
60, 85.45
45, 88.36
55, 81.67
65, 78.45

Quiz Start Time: 06:07 PM
Time Left 87
sec(s)
Question # 6 of 10 ( Start time: 06:13:29 PM ) Total Marks: 1
If in regression line Y on X the y intercept is zero then
Select correct option:
The line is parallel to x-axis
The line is parallel to y-axis
Y is multiple of X
None of these

Quiz Start Time: 06:07 PM
Time Left 88
sec(s)
Question # 7 of 10 ( Start time: 06:14:55 PM ) Total Marks: 1
Which method of trend analysis is useful for data not having a pronounced trend or seasonality?
Select correct option:
Multiplicative model
Decomposition model
Exponential smoothing method
Trend analysis

Quiz Start Time: 06:07 PM
Time Left 89
sec(s)
Question # 8 of 10 ( Start time: 06:16:09 PM ) Total Marks: 1
For Y = a - b X we say that relationship between Y and X is
Select correct option:
direct & linear
indirect & linear
indirect & curvilinear
direct & curvilinear

Quiz Start Time: 06:07 PM
Time Left 87
sec(s)
Question # 9 of 10 ( Start time: 06:17:39 PM ) Total Marks: 1
In how many ways can a cricket eleven be chosen out of a batch of fifteen players? Which option as below is true according to the given statement?
Select correct option:
15C4
11C15
15C11
None of these.

Quiz Start Time: 06:07 PM
Time Left 88
sec(s)
Question # 10 of 10 ( Start time: 06:18:59 PM ) Total Marks: 1
Regression line always passes through
Select correct option:
Mean of data
Median of data
Both i. & ii.
None

Q.   The square of the correlation coefficient is called the

• coefficient of determination
• variance
• covariance
• big R

Q.   nCn =___________

nC0

2

3

None of these

Q.   The moving averages of the Prices 90,70,30,110 are

63.33, 70

73.33, 80

45.45, 68

65.50, 75

Q.   The sum of squares of the deviations of the observed values from the regression line is

zero

least or minimum

maximum

none of these

Q.   In a simple linear regression analysis, the correlation coefficient (r) and the slope (b1) have the same sign.

Always

Sometimes

Never

Most of the times

Q.     A pattern of variation of a time series that repeats every year is called:

Cyclical

Seasonal

Trend

Secular

Q.    An arrangement of all or some of a set of objects in a definite order is called

Combination

Permutation

Q.    The square of the correlation coefficient is called the

Coefficient of determination

Variance

Covariance

Big R

Solution posted above, if any mistake please make correction

Quiz Start Time: 06:07 PM

Question # 1 of 10 ( Start time: 06:07:48 PM ) Total Marks: 1
The estimated number of visitors (�00s) at the holiday resort was during year 2001 to 2005 were 31, 49,74,62 and 65 respectively. Then 3-year moving average of visitors are
Select correct option:
62.67, 51.45,85
82.03, 63.64,73
51.33, 61.67, 67
49.32, 32.73,93

Quiz Start Time: 06:07 PM
Time Left 87
sec(s)
Question # 2 of 10 ( Start time: 06:09:08 PM ) Total Marks: 1
What is the value of nCn? (C for combination)
Select correct option:
n
0
1
None of these.

Quiz Start Time: 06:07 PM
Time Left 89
sec(s)
Question # 3 of 10 ( Start time: 06:09:53 PM ) Total Marks: 1
A fitted regression equation is given by Yhat = 20 + 0.75X. What is the value of the residual at the point X=100, Y=90?
Select correct option:
-5
5
95
None of these

Quiz Start Time: 06:07 PM
Time Left 88
sec(s)
Question # 4 of 10 ( Start time: 06:11:18 PM ) Total Marks: 1
The moving averages can be used for -------------.
Select correct option:
mode
forecasting purposes
Middle value.
Median

Quiz Start Time: 06:07 PM
Time Left 88
sec(s)
Question # 5 of 10 ( Start time: 06:12:32 PM ) Total Marks: 1
The moving averages of the Prices 30, 45, 90, 110 are
Select correct option:
60, 85.45
45, 88.36
55, 81.67
65, 78.45

Quiz Start Time: 06:07 PM
Time Left 87
sec(s)
Question # 6 of 10 ( Start time: 06:13:29 PM ) Total Marks: 1
If in regression line Y on X the y intercept is zero then
Select correct option:
The line is parallel to x-axis
The line is parallel to y-axis
Y is multiple of X
None of these

Quiz Start Time: 06:07 PM
Time Left 88
sec(s)
Question # 7 of 10 ( Start time: 06:14:55 PM ) Total Marks: 1
Which method of trend analysis is useful for data not having a pronounced trend or seasonality?
Select correct option:
Multiplicative model
Decomposition model
Exponential smoothing method
Trend analysis

Quiz Start Time: 06:07 PM
Time Left 89
sec(s)
Question # 8 of 10 ( Start time: 06:16:09 PM ) Total Marks: 1
For Y = a - b X we say that relationship between Y and X is
Select correct option:
direct & linear
indirect & linear
indirect & curvilinear
direct & curvilinear

Quiz Start Time: 06:07 PM
Time Left 87
sec(s)
Question # 9 of 10 ( Start time: 06:17:39 PM ) Total Marks: 1
In how many ways can a cricket eleven be chosen out of a batch of fifteen players? Which option as below is true according to the given statement?
Select correct option:
15C4
11C15
15C11
None of these.

Quiz Start Time: 06:07 PM
Time Left 88
sec(s)
Question # 10 of 10 ( Start time: 06:18:59 PM ) Total Marks: 1
Regression line always passes through
Select correct option:
Mean of data
Median of data
Both i. & ii.
None

Solution have been posted above, if any mistake please make correction

Thanks M.Asif

Thanks Asif bhai Thnx Asif bhai, GOD bless u

Friends my latest quiz

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