__Quiz MTH302__

Question # 1

The formula for the OR rule in probability theory is defined to be

Select correct option:

P(A or B) = P(A) - P(B)

P(A or B) = P(A) + P(B)-P(A and B)

P(A or B) = P(A) + P(B)

P(A and B) = P(A) +P(B)+ P(A or B)

Question # 2

The minimum number of points required to calculate the intercept of a straight line is/are

Select correct option:

one

two

three

one or three

Question # 3 of 10

"The business ups and downs over a period of certain number of yearsâ€ť is an example of

Select correct option:

Seasonal variation

Cyclical fluctuation

Secular trend

None of these

Question # 4

The estimated regression line of Y on X is

Select correct option:

Y` = a + bX

X` = a + bY

Y` = a - bX

iv. None of above

Question # 5

The standard error of estimate is

Select correct option:

based on squared deviations from the regression line.

may assume negative values.

in squared units of the independent variable.

All the given choices are correct.

Question # 6

If a dice is thrown then the probability of getting an odd number or an even number is

Select correct option:

1/2

1/3

1

None of these

Question # 7

Exponential Smooth constant/ proportion of error

Select correct option:

Is positive always

Negative

between 0and 1 Lies

None of these

Question # 7

Exponential Smooth constant/ proportion of error

Select correct option:

Is positive always

Negative

between 0and 1 Lies

None of these

Question # 9

The method of least squares finds the best fit line that _______ the error between observed & estimated points on the line

Select correct option:

a) Maximizes

b) Minimizes

c) Reduces to zero

d) b & c

Question # 10

The moving averages represent ------------------

Select correct option:

Time series variations

Co-efficient of variations

Statistical Dispersion

Absolute deviation