Vu All Subjects Assignment Quiz GDB Handouts Available here
Aslam U Alaikum!
Dear Students
In this post we are providing you CS201Quiz-3 Solution Fall 2022 (23 to 33) 100% correct or right solution. You'll Download assignment Solution File From below download (Click Here For Download File) link interface.
Quiz No 3 will be opened from
15th February,2022 to 19th February, 2022.
In simple linear regression one variable depend upon
One
dependable
An insurance company wants to predict sales from the amount
of money they spend on advertising. Which would be the independent variable?
Intercept function calculates the point at which a line will
intersect -------------
the
y-axis
A scatter diagram is a chart that portrays the relationship
between two variables.
True
In scatter diagram if both variables X and Y tend to move in
the same direction the correlation is called
+ve
In the equation
Y=2+3X the intercept is
2
If the estimating equation is Y = a – b X, which of the
following is true
There
is inverse relationship
If mean scores of midterm and final term of a student is 78%
and 80%. Also variances are 106 and 77 then
Midterm
has greater variation in marks than Final term
For the least squares regression line y = 0.9 + 1.7x,___ and
___ are slope and intercept respectively.
1.7 and
0.9
A simple linear regression model is an equation that
describes the straight-line relationship between a dependent variable and an
independent variable.
True
If the increase in one variable causes increase in the
another variable, the form of correlation between the variables must be
Positive
In regression analysis, if X is to be estimated on the basis
of Y, then the equation is called the regression equation of
X on Y
Which of the following is used most frequently measures of
dispersion because of its statistical properties and interpretive value?
Standard
deviation
As the regression line equation is y = ax + b, where b
is
The
y-intercept
If a set of bivariate data (of two variables) is traced in
XY-plane and this scattered plot is approximated to get a straight line:
(x/2)+1= 0. Then its Y-intercept is
None of
these
A scatterplot of a correlation of .10 would look
straight
line.
Mean deviation of the set 2,4,6 is
4
In a linear regression of y on x, y = a + bx
the
variance of x is constant for all values of y
Choose the correlation that describes the strongest
relationship between two variables
.60
If sx=2, sy = 4 and sxy =10 then correlation r is
1.25
The mean of 3.5, 4.5, 6.5, 7.5 is ---------------
5.5
…… is the mean of inverse values.
Harmonic
mean
The measure of the degree to which any two variables vary
together is called
Correlation
A scatter diagram is a chart
All the
given choices are true.
There are two graphs G1 and G2. The graph G1 has r = 0.9 and
the graph G2 has r = 0.5, then what result do you take out from it?
G1 is
more scattered than G2.
The measurement of measure of degree of
to which any two variables vary together
is called
c)Both
(a) and (b)
In the scatter diagram, clustering of points around a
straight line indicates
linear
regression
The statement
"Median does not get affected by extreme values or
outliers in the data"
is . . .
True
In case of variance, for the sample, the sum of squares of
the deviations is divided by
One
less the number of values in the population i-e (N-1)
Which of the following is a measure of central tendency?
Mode
Variance gives the average square of deviations from the
Mean
Suppose we developed the following least squares regression
equation: Y = 3.5 + 2.1X. Which of the following statements is correct?
If X =
5, then Y =15.
In scatter diagram if both variables X and Y tend to move in
the same direction the correlation is called
Positive
The ratio of the standard deviation of a distribution to the
mean of that distribution is referred to as
coefficient
of variation
The mathematical equation describing the liner relation is
Y = a +
bx
If the value of r is 0.8 ,then the coefficient of determination is
64%
…………is used in compounding such as investments that are
accumulated over a period of time
Geometric
mean
The simple linear regression co-efficient is changed by
Both
origin and scale
Which of the following statements is true for Positively
Skewed Distribution?
Mean
> median > mode
The value that occurs most frequently in the data is
called…..
mode
Analysis of Variance (ANOVA) is a test for equality of:
Means
The sum of deviations from mean is ........
0
If the standard deviation of a population is 9, the
population variance is:
81
The sum of the deviations about the mean are always:
0
The line with slope zero is
horizontal
line
We are here to provide Latest Virtual University Assignment Solutions, GDB Solutions, Quiz Solution, Midterm Past Papers, and Final term Past Papers in this website.
Thanks everone