Download if the equation of regression line is y = 5, then what result will you

if the equation of regression line is y = 5, then what result will you take out from it?
Select correct option:
The line passes through origin.
The line passes through (5, 0)
The line is parallel to y-axis.
The line is parallel to x-axis.
If the estimating equation is Y = a – b X ,Which of the following is true
Select correct option:
a)The y intercept is’b’
b) Slope of line is negative
c) There is inverse relationship
d) b & c
If the regression line: Y= 3+5X meets y-axis at ‘8’ units distance from origin then the value of xintercept is
Select correct option:
-(3/5)
3/5
11/5
1
because 8=3+5x -> 5=5x- > x=1
if the equation of regression line is y = 5, then what result will you take out from it?
Select correct option:
The line passes through origin.
The line passes through (5, 0)
The line is parallel to y-axis.
The line is parallel to x-axis.
Sum of three terms whose mean is equal to 90 is
Select correct option:
270
30
Also 90
None of these
Which of the following reveals the weakest fact.
Select correct option:
a) The measure of central tendency measures that value which depends only on the
extreme values (I Think)
b) The measure of central tendency measures that value in tha data which occurs in the data
most frequent times.
c) The measure of central tendency measures the value which has tendency to lie in the central
part of the data.
The measure of central tendency measures the distance of values from means
Frequency polygon is …………
Select correct option:
Bar Charts
A line graph
Pareto Chats
None of these
A bar graph uses ……to show data.
Select correct option:
Points
Bars
Lines
Pictures
If the estimating equation is Y = a – b X ,Which of the following is true
Select correct option:
a)The y intercept is’b’
b) Slope of line is negative
c) There is inverse relationship
d) b & c
Geographical data deals with…
Select correct option:
Religion
Height
Income
Regions
If the regression line: Y= 3+5X meets y-axis at ‘8’ units distance from origin then the value of xintercept is
Select correct option:
-(3/5)
3/5
11/5
1
A data in which we study about Regions is called ……
Select correct option:
Qualitative
Quantitative
Geographical
Chronological
If the median of an arrangement of numbers is equal to the mean of its middle terms then the
arrangement contains
Select correct option:
Odd number of terms
Even number of terms
Unlimited number of terms
Prime number
Question No. 1:
Class width of the given data is defined as ratio of
Select correct option:
1: Range and number of values in the given data
2: Range and the number of classes
3: Range and mid point/value
4: None of these
Question No. 2:
For the regression line: Y= -X + 5, y-intercept is
Select correct option:
1: -5
2: 5
3: -1
4: 1
Question No. 3:
For the regression line:Y= a+bX,'a' is the
Select correct option:
1: Slope of the regression line
2: y-intercept
3: x-intercept
4: none of these
Question No. 4:
Different ways of organizing univariate categorical data are
Select correct option:
1: The Summary Table
2: Bar and Pie Charts, the Pareto Diagram
3: Contingency Tables
4: Only option 1 & 2
Question No. 5:
The rate of change along the regression line is called
Select correct option:
1: Linear regression*
2: Non Linear regression
3: Slope
4: Curve
Question No. 6:
If the graph is very much scattered, then what can be the suitable value of r?
Select correct option:
1: r = - 0.9
2: r = -0.5
3: r = 0.1
4: r = 0.8
Question No. 7:
In scatter diagram, clustering of points around a straight line indicates
Select correct option:
1: Linear regression
2: Non-linear regression
3: Curvilinear linear regression
4: Both (a) and (b)*
Question No. 8:
If the standard deviation of a population is 9, the population variance is
Select correct option:
1: 3
2: 9
3: 21.35
4: 81
Question No. 9:
The coefficient of variation for a set of annual incomes is 18%; the coefficient of
variation for the length of service with the company is 29%. What does this
indicate?
Select correct option:
1: More dispersion in the distribution of the incomes compared with the dispersion of
their length of service
2: More dispersion in the lengths of service compared with income *
3: Dispersion in the two distributions (income and service) cannot be compared using
percents
4: Dispersions are equal
Question No. 10:
Which of the following is the better average?
Select correct option:
1: arithmetic mean
2: geometric mean
3: harmonic mean
4: all above
Question No. 11:
FREQUENCY Function calculates how often values occur within a range of values.
Select correct option:
1: True
2: False
Question No. 12:
Which of the following correlation coefficients represents the weakest correlation
between two variables?
Select correct option:
1: 0.15
2: -0.15
3: 0.02
4: -1.00
Question No. 13:
The frequency of the required class can be obtained from the cumulative frequency
Select correct option:
1: by subtracting the cumulative frequency of the relative class from the next cumulative
frequency
2: by subtracting the cumulative frequency of the relative class from the total frequency
3: by subtracting the cumulative frequency of the relative class from the previous
cumulative frequency
4: None of these *
Question No. 14:
If the value of r is 0.8 ,then the coefficient of determination is
Select correct option:
1: 67%
2: 64%
3: 80%
4: 75%
Question No. 15:
If the dependent variable increases with the independent variable then the
coefficient of correlation is
Select correct option:
1: 0 to -1
2: 0 to – 0.5
3: 0 to -2
4: 0 to 1
Question No. 16:
In negatively skewed distribution the true relation is
Select correct option:
1: A.M < MEDIAN < MODE
2: A.M > MEDIAN > MODE
3: A.M = MEDIAN = MODE
4: None of these
Question No. 17:
The coefficient of variation for a set of annual incomes is 18%; the coefficient of
variation for the length of service with the company is 29%. What does this
indicate?
Select correct option:
1: More dispersion in the distribution of the incomes compared with the dispersion of
their length of service
2: More dispersion in the lengths of service compared with income*
3: Dispersion in the two distributions (income and service) cannot be compared using
percents
4: Dispersions are equal
Question No. 18:
The syntax intercept (known y’s, known x’s ) gives
Select correct option:
1: x- intercept
2: y- intercept
3: Both (a) and (b) are same
4: None of these*
Question No. 19:
Trimmed mean is the mean of ....
Select correct option:
1: The remaining data
2: The middle data
3: The data from last
4: None of these
NOTE: * stands for Doubtful Answers
Question No. 1:
Sum of three terms whose mean is equal to 90 is
Select correct option:
1: 270
2: 30
3: Also 90
4: None of these
Question No. 2:
Geographical data deals with…
Select correct option:
1: Religion
2: Height
3: Income
4: Regions
Question No. 3:
If the regression line: Y= 3+5X meets y-axis at ‘8’ units distance
from origin then the value of x-intercept is
Select correct option:
1: -(3/5)
2: 3/5
3: 11/5
4: 1*
Question No. 4:
A data in which we study about Regions is called ……
Select correct option:
1: Qualitative
2: Quantitative
3: Geographical
4: Chronological
Question No. 5:
If the median of an arrangement of numbers is equal to the mean of its
middle terms then the arrangement contains
Select correct option:
1: Odd number of terms
2: Even number of terms
3: Unlimited number of terms
4: Prime number
Question No. 6:
A bar graph uses ……to show data.
Select correct option:
1: Points
2: Bars
3: Lines
4: Pictures
Question No. 7:
Frequency polygon is …………
Select correct option:
1: Bar Charts
2: A line graph
3: Pareto Chats
4: None of these
Question No. 8:
Geographical data deals with…
Select correct option:
1: Religion
2: Height
3: Income
4: Regions(correct option)
NOTE: * Stands for doubtful Answers.
Question No. 1:
If the equation of regression line is y = 5, then what result will you take out from it?
Select correct option:
1:The line passes through origin.
2: The line passes through (5, 0)*
3: The line is parallel to y-axis.
4: The line is parallel to x-axis.
Question No. 2:
Sum of three terms whose mean is equal to 90 is
Select correct option:
1: 270
2: 30
3: Also 90
4: None of these
Question No. 3:
Which of the following reveals the weakest fact.
Select correct option:
1:The measure of central tendency measures that value which depends only on the
extreme values*
2: The measure of central tendency measures that value in tha data which occurs in the data
most frequent times.
3: The measure of central tendency measures the value which has tendency to lie in the central
part of the data.
4: The measure of central tendency measures the distance of values from means
Question No. 4:
Frequency polygon is …………
Select correct option:
1: Bar Charts
2: A line graph
3: Pareto Chats
4: None of these
Question No. 5:
A bar graph uses ……to show data.
Select correct option:
1: Points
2: Bars
3: Lines
4: Pictures
Question No. 6:
If the estimating equation is Y = a – b X ,Which of the following is true
Select correct option:
1: The y intercept is’b’
2: Slope of line is negative
3: There is inverse relationship
d) b & c *
Question No. 7:
Geographical data deals with…
Select correct option:
1: Religion
2: Height
3: Income
4: Regions
Question No. 8:
If the regression line: Y= 3+5X meets y-axis at ‘8’ units distance from origin then the value
of x-intercept is
Select correct option:
1: -(3/5)
2: 3/5
3: 11/5
4: 1
Question No. 9:
A data in which we study about Regions is called ……
Select correct option:
1: Qualitative
2: Quantitative
3: Geographical
4: Chronological
Question No. 1:
If the median of an arrangement of numbers is equal to the mean of its middle terms then
the arrangement contains
Select correct option:
1: Odd number of terms
2: Even number of terms
3: Unlimited number of terms
4: Prime number
NOTE: * Stands for doubtful Answers.
Question # 1 of 10 ( Start time: 06:34:59 PM ) Total Marks: 1
………use the division of a circle into different sectors. Select correct option:
Line graph
Sector graphs
Frequency Polygon
Conversion Graphs
Question # 2 of 10 ( Start time: 06:36:03 PM ) Total Marks: 1
If Mean of X = 20.143 , Mean of Y = 6 , and Slope = 0.181176 Then intercept of the data is Select
correct option:
4.51
3.45
2.35
3.58
Question # 3 of 10 ( Start time: 06:36:48 PM ) Total Marks: 1
The measurement of measure of degree of to which any two variables vary together is called
Select correct option:
a)Regression Coefficient
b)Correlation
c)Both (a) and (b)
d)None of these*
Question # 4 of 10 ( Start time: 06:37:37 PM ) Total Marks: 1
Analysis of Variance (ANOVA) is a test for equality of: Select correct option:
variances
means
proportions
only two parameters
Question # 5 of 10 ( Start time: 06:38:04 PM ) Total Marks: 1
For some data you are given Maximum value = 96 , Minimum Value = 23 , Range = 73, number
of classes selected between 5 and 15 Then class width will be Select correct option:
15
8
5
All options 1,2 ,3 are possible
Question # 6 of 10 ( Start time: 06:39:08 PM ) Total Marks: 1
If strength of the association between X and Y is very weak, then r = ? Select correct option:
r=-1
r = 0*
r=1
r=2
Question # 7 of 10 ( Start time: 06:39:36 PM ) Total Marks: 1
The moving averages of the Prices 90,70,30,110 are Select correct option:
63.33, 70
73.33, 80
45.45, 68
65.50, 75
Question # 8 of 10 ( Start time: 06:40:45 PM ) Total Marks: 1
Let, Variation (Y) = n*Sum(y^2) – [Sum ]^2 Variation (X) = n*Sum(x^2) – [Sum(x)]^2 Then, the
following formula of slope b = {Sum(X*Y) – [ Sum(x)*Sum ] }/ Variation (Y) Select correct option:
a)for the regression line Y on X
b)for the regression line X on Y
c)Both (a) and (b)
d)None of these
Question # 9 of 10 ( Start time: 06:41:19 PM ) Total Marks: 1
Class width of the given data is defined as ratio of Select correct option:
Range and number of values in the given data
Range and the number of classes
Range and mid point/value
None of these
Question # 10 of 10 ( Start time: 06:41:55 PM ) Total Marks: 1
A simple linear regression model is an equation that describes the straight-line relationship
between a dependent variable and an independent variable. Select correct option:
True
False
The regression equation should only used
Select correct option:
When there is significant linear correlation
When there is significant mluticorrelation
When there is significant quadratic correlation
When there is significant simple correlation
In the central tendency Mean, Median and Mode
Select correct option:
Mean is better than Median
Median is better than Mode
Mean is better than Mode
All of these are true
The degree to which numerical data tend to spread about an average is called
Select correct option:
The dispersion
Standard deviation
Correlation
None of these
…………..graphs are similar to bar graphs.
Select correct option:
column
line
conversion
sector
A pattern of variation of a time series that repeats every year is called:
Select correct option:
Cyclical
Seasonal
Trend
Secular
If the values of variables are increasing or decreasing in the same direction then
such kind of correlation is referred as
Select correct option:
Zero Correlation
Perfect Correlation
Positive Correlation
Negative Correlation
The moving averages of the Prices 55,60,65,70 are
Select correct option:
70, 75
60, 65
65,65
70,60
The best measure of variation is
Select correct option:
Range
Quartile deviation
Variance
Coefficient of variance
In the scatter diagram, clustering of points around a straight line indicates
Select correct option:
linear regression
non-linear regression
curvilinear regression
none of these
Ms. Christian calculated a correlation coefficient of .75. Which of the following
reflects the best interpretation of this?
Select correct option:
Weak negative.
Strong negative.
Weak positive.
Strong positive.
Class width of the given data is defined as ratio of
Select correct option:
Range and number of values in the given data
Range and the number of classes
Range and mid point/value
None of these
For the regression line: Y= -X + 5, y-intercept is
Select correct option:
-5
5
-1
1
For the regression line:Y= a+bX,'a' is the
Select correct option:
Slope of the regression line
y-intercept
x-intercept
none of these
Different ways of organizing univariate categorical data are
Select correct option:
The Summary Table
Bar and Pie Charts, the Pareto Diagram
Contingency Tables
Only option 1 & 2
The rate of change along the regression line is called
Select correct option:
Linear regression
Non Linear regression
Slope
Curve
If the graph is very much scattered, then what can be the suitable value of r?
Select correct option:
r = - 0.9
r = -0.5
r = 0.1
r = 0.8
In scatter diagram, clustering of points around a straight line indicates
Select correct option:
a) Linear regression
b) Non-linear regression
c) Curvilinear linear regression
d) Both (a) and (b)
If the standard deviation of a population is 9, the population variance is
Select correct option:
3
9
21.35
81
The coefficient of variation for a set of annual incomes is 18%; the coefficient of
variation for the length of service with the company is 29%. What does this
indicate?
Select correct option:
More dispersion in the distribution of the incomes compared with the dispersion
of their length of service
More dispersion in the lengths of service compared with income
Dispersion in the two distributions (income and service) cannot be compared
using percents
Dispersions are equal
Which of the following is the better average?
Select correct option:
arithmetic mean
geometric mean
harmonic mean
all above
FREQUENCY Function calculates how often values occur within a range of
values.
Select correct option:
True
False
Which of the following correlation coefficients represents the weakest correlation
between two variables?
Select correct option:
0.15
-0.15
0.02
-1.00
The frequency of the required class can be obtained from the cumulative
frequency
Select correct option:
by subtracting the cumulative frequency of the relative class from the next
cumulative frequency
by subtracting the cumulative frequency of the relative class from the total
frequency
by subtracting the cumulative frequency of the relative class from the previous
cumulative frequency
None of these
If the value of r is 0.8 ,then the coefficient of determination is
Select correct option:
67%
64%
80%
75%
If the dependent variable increases with the independent variable then the
coefficient of correlation is
Select correct option:
0 to -1
0 to – 0.5
0 to -2
0 to 1
In negatively skewed distribution the true relation is
Select correct option:
A.M < MEDIAN < MODE
A.M > MEDIAN > MODE
A.M = MEDIAN = MODE
None of these
The coefficient of variation for a set of annual incomes is 18%; the coefficient of
variation for the length of service with the company is 29%. What does this
indicate?
Select correct option:
More dispersion in the distribution of the incomes compared with the dispersion
of their length of service
More dispersion in the lengths of service compared with income
Dispersion in the two distributions (income and service) cannot be compared
using percents
Dispersions are equal
The syntax intercept (known y’s, known x’s ) gives
Select correct option:
a)x- intercept
b)y- intercept
c)Both (a) and (b) are same
d)None of these
Trimmed mean is the mean of ....
Select correct option:
The remaining data
The middle data
The data from last
None of these