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Online Tests
Statistics Ics Part 2 Chapter 5 Online Test MCQs With Answers
Question # 1
The regression equation always passes throught_________.
Choose an answer
(X, Y)
(X, y̅)
(X̅, Y)
(X̅, y̅)
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Question # 2
A data points falling along a straight line is called______.
Choose an answer
Linear relationship
Non-linear relationship
Linear positive
Scatter diagram
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Question # 3
If b
yx
= 0.89 and b
xy
= 0.75, then r=
Choose an answer
0.89
0.28
0.98
0.82
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Question # 4
The estimated regression line always passes through
Choose an answer
origin
x-axis
y-axis
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Question # 5
When b
xy
is positive, then b
yx
will be _______.
Choose an answer
Negative
Positive
Zero
One
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Question # 6
The _______ regression line always passes through (X̅, y̅).
Choose an answer
Opposite
Estimated
Estimates
Random
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Question # 7
Regression line x on y is
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Question # 8
If X and Y are independent, then Cov(x,y) = 0 which implies that
Choose an answer
b
yx
= 0
b
xy
= 0
ρ = 0
a = 0
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Question # 9
Choose an answer
S
xy
S
yx
b
xy
b
yx
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Question # 10
The estimates of the parameters=α and=β are
Choose an answer
μ and=σ2
a and b
μ andπ
χ2 and Z
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Question # 11
A process by which we estimate the value of dependent variable on the basis of one or more independent variable is called_________.
Choose an answer
Residual
Correlation
Regression
Slope
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Question # 12
A set of points in a rectangular coordinate system, where each point represents an observed pair of values is called
Choose an answer
least square regression
scatter diagram
pie graph
regression coefficient
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Question # 13
The straight line graph of the linear equation Y = a + bX, the slope will be upward it_______.
Choose an answer
b = 0
b < 0
b > 0
b ≠ 0
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Question # 14
r
xy
-------------- r
yx
Choose an answer
=
<
>
≠
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Question # 15
Choose an answer
b
yx
b
xy
S
p
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Question # 16
A relationship where the flow of the data points is best represented by a curve is called_______.
Choose an answer
Linear positive
Linear negative
Linear relationship
Nonlinear relatiobship
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Question # 17
The relationship that describes the dependence of the expected value of the dependent random variable for a given value of the independent non-random variable is called
Choose an answer
equation
relation
ratio
regression
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