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WorksheetsRegression Analysis
Total questions: 15
Worksheet time: 18mins
Regressionanalysis is the measure of .......................relationship between variables
nature
independence
cause and effect
none of these
Correlation coefficientcis equal to ........................of regression coefficients.
AM
GM
AVERAGE
SUM
If bxy is greater than 1 then
byx is..................greater than 1
less than 1
equal to 1
equal to -1
the range of regression coefficient is.................
−∞ to 0
− ∞ to ∞
-1 to +1
1 to ∞
if r=0.5 bxy =1 then byx = (a)
if r=0.5 byx =0.5 then bxy = (a)
if bxy =2 and byx =0.5 then r= (a)
the term regression was introduced by....................
R A Fischer
Sir Francis Galton
Karl Pearson
None of these
In a regression line of Yon X the variable Xis known as
independent variables
regressior
explanatory variable
all of the above
The regression line of Y on X is 5x-7y=10, then the regression coefficient of Y on X is
75
57
5−7
710
A linear regression (LR) analysis produces the equation Y = 3 + 0.4X. This indicates that:
When Y = 0.4, X = 3
When Y = 0, X = 3
When X = 3, Y = 0.4
When X = 0, Y = 3
Linear regression is a statistical regression method which is used for
Predictive Analysis
Real Analysis
Complex Analysis
Functional Analysis
12.How many coefficients do you need to estimate in a simple linear regression model (One independent variable)?
1
2
3
4
14.In regression analysis, the variable that is being predicted is;
a) the independent variable
b) the dependent variable
c) usually denoted by x
d) usually denoted by r
When r=0 the regression lines are
coincident
perpendicular
parallel
none of these
