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CBSE Questions for Class 11 Commerce Economics Correlation Quiz 2 - MCQExams.com

State the following statement is true or false
The value of coefficient of correlation is always 2.
  • True
  • False
If the value of any regression coefficient is zero, then two variables are: 
  • Qualitative
  • Correlation
  • Dependent
  • Independent
What is the correlation of this scatter diagram 

1698335_21dcae4f02e54e73944fc57a5629dcad.JPG
  • Perfect negative correlation
  • Negative correlation with high degree
  • Negative correlation with low degree
  • Zero correlation
Regression is________________.
  • independent of origin and scale
  • independent of origin and not of scale
  • independent of origin
  • independent of scale
Write True/False in the following statement:
If regression coefficient are 0.8 and 0.2 then the value of corelation coefficient is +0.4
  • True
  • False
What is the correlation of this scatter diagram 
1698300_068434db180343bcbb4a637b85b875fe.JPG
  • Perfect positive correlation
  • Positive correlation with high degree
  • Positive correlation with low degree
  • Zero correlation
What is the correlation of this scatter diagram 
1698333_7deb9f09306b412b93a7f927ae04cf77.JPG
  • Perfect negative correlation
  • Negative correlation with high degree
  • Negative correlation with low degree
  • Zero correlation
 Distance(Km) 80120 160 200 240 
 Time(Hr)
A train travelled between two stations and distance and time were recorded as above,

Draw the scatter diagram and identify the type of correlation.


  • Perfect positive correlation
  • Positive correlation with high degree
  • Positive correlation with low degree
  • Zero correlation
What is the correlation of this scatter diagram
1698334_47bfc5b50734444db0dba92a414c68f3.JPG
  • Perfect negative correlation
  • Negative correlation with high degree
  • Negative correlation with low degree
  • Zero correlation
What is the correlation of this scatter diagram
1698301_24a4e335ccd34db9a5e70dbbe035bba9.JPG
  • Perfect positive correlation
  • Positive correlation with high degree
  • Positive correlation with low degree
  • Zero correlation
Write True/False in the following statement:
The value of correlation coefficient lies between 2 to +2
  • True
  • False
What is the correlation of this scatter diagram 
1698302_ee6336f821cd4953ac010bbcd2554066.JPG
  • Perfect positive correlation
  • Positive correlation with high degree
  • Positive correlation with low degree
  • Zero correlation
 Capital (in crores Rs.)
 Profit (in Lakh Rs.)10 
Draw scatter diagram for the following data and
identify the type of correlation.

  • Perfect positive correlation
  • Positive correlation with high degree
  • Positive correlation with low degree
  • Zero correlation
Choose the statement which consists of two correlated variables.
  • Increase in the intensity of cold results in greater sale of woollen clothes
  • Increase in temperature of delhi has led to congestion
  • Increase in weight of children s accompanied by increase in weight of their mother
  • None of the above
If n=10,x=4,y=3,x2=8,y2=9 and xy=3, then the coefficient of rx,y is
  • 34
  • 15
  • 16
  • 14
Choose the statement which consists of two  positively correlated variables.
  • Increase in temperature leads to increase in sales of air conditioners.
  • Increase in temperature leads to decrease in traffic on road.
  • Decrease in temperature is accompanied by increase in sales of ice creams
  • None of the above
If the value of correlation r=12 or r=12, then correlation is called
  • High negative
  • High positive
  • Low positive
  • Moderate.
Calculate the correlation coefficient between the corresponding values of X and Y in the following table:
X2456811
Y181210875
  • 0.65
  • 0.82
  • 0.92
  • 0.48
If x, y are independent variable, then

  • Cov(x,y)=1
  • rxy=0
  • rxy=1
  • Cov(x,y)=0
The data in which of the following scatterplots would be best modeled by a quadratic function in which the x2 term has a negative coefficient?
A strong positive association between x and y is depicted by which of the following graphs?
The marks obtained by nine students in physics and Mathematics are given below:
Physics486072625640395230
Mathematics627865703854603231
calculate spearman's coefficient.
  • r=0.66
  • r=0.32
  • r=0.53
  • r=0.28
The coefficient of correlation is always between
  • 0 and 1
  • 1 and 1
  •  and 
  • 10 and 10
FInd the rank correlation from the following data:
S. No.12345678910
Rank Differences-2-4-1320-233-2
  • 0.64
  • 0.50
  • 0.45
  • 0.34
Rank correlation depends on________________.
  • a specific distribution
  • the ranks of observations
  • the ranks of unknown value
  • the ranks of known value
Rank correlation co-efficient was developed by___________.
  • Karl Pearson
  • C. Spearman
  • Francis Cotton
  • Carly
The marks in history and mathematics of twelve students in a public examination are given below. Calculate a coefficient of correlation by ranks.
StudentABCDEFGHIJKL
History693639716776402085655534
Mathematics335271257922838124354664

  • -0.77
  • -0.92
  • 0.77
  • 0.92
If increase in value of one variable is not accompnied by the proportional decrease in second variable, then corrrelation between two variables is
  • perfect positive
  • perfect negative
  • imperfect positive
  • imperfect negative
The marks in History and Mathematics of twelve students in a public examination are given below. Calculate a coefficient of correlation by ranks.
StudentABCDEFGHIJKL
History693639716776402085655534
Mathematics3352712579228381243546
64

Interpret the result.
  • A very good student of history is a very bad student in mathematics.
  • A bad student of history is even bad student in mathematics.
  • This is positive correlation
  • None of the above
Following are the rank obtained by 10 students in two subjects , Statistics and Mathematics . To what extent the knowledge of the students in the two subjects is related?
Statistics13345678910
Mathematics24153971068
  • 0.76
  • 0.66
  • 0.56
  • 0.48
0:0:2


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