CBSE Questions for Class 11 Commerce Economics Correlation Quiz 1 - MCQExams.com

Francis Galton used the regression analysis to study the relationship between the heights of about _________.
  • 100 fathers and sons
  • 500 fathers and sons
  • 200 fathers and sons
  • 1000 fathers and sons
If the two regression coefficients are 0.8 and 0.2,then the value of coefficient of correlation is __________.
  • -0.16
  • -0.50
  • +0.40
  • -0.40
The total expenditure of the company over these items during the year $$2000$$ is?
  • $$Rs. 544.44\ lakhs$$
  • $$Rs. 501.11\ lakhs$$
  • $$Rs. 446.46\ lakhs$$
  • $$Rs. 478.87\ lakhs$$
In correlation, there is______________.
  • cause and effect relationship
  • no cause and effect relationship
  • relationship between the independent variable and dependent variable
  • functional relationship between two variables
If $$\displaystyle cov\left( X,Y \right) =1,var\left( X \right) =1,var\left( Y \right) =4$$ then $$Cor(X,Y)=$$
  • $$1$$
  • $$2$$
  • $$\displaystyle \frac { 1 }{ 2 } $$
  • $$\displaystyle \frac { 1 }{ 4 } $$
Total number of candidates qualified from all the states together in $$1997$$ is approximately what percentage of the total number of candidates qualified from all the states together in $$1998$$?
  • $$72$$%
  • $$77$$%
  • $$80$$%
  • $$83$$%
Choose the negative correlation between two variables.
  • Increase in temperature leads to increase in sales of air conditioners.
  • As chicken gets older , they lay fewer eggs.
  • As sedentary lifestyle is growing , home delivery business is making huge business
  • None of the above.
If increase in value of one variable is accompanied by the proprtional increase in second variable, then corrrelation between two variables is
  • perfect positive
  • perfect negative
  • imperfect positive
  • imperfect negative
Choose the example of negative correlation.
  • Increase in traffic correlation leads to increase in air pollution
  • As sound pollution is growing , problems related to brain is also increasing.
  • As Sedentary lifestyle is increasing , home delivering business are growing.
  • None of the above
The total amount of bonus paid by the company during the given period is approximately what percent of the total amount of salary paid during this period?
  • $$0.1$$%
  • $$0.5$$%
  • $$1$$%
  • $$1.25$$%
What was the aggregate of marks obtained by Sajal in all the six subjects?
  • $$409$$
  • $$419$$
  • $$429$$
  • $$449$$
Choose the positively correlated variables.
  • Increase in temperature leads to increase in sales of air conditioners.
  • As people get older , they become more stronger.
  • increase in alcohol consumption leads to increase in savings
  • None of these
The ratio between the total expenditure on Taxes for all the years and the total expenditure on Fuel and Transport for all the years respectively is approximately?
  • $$4 : 7$$
  • $$10 : 13$$
  • $$15 :18$$
  • $$5 : 8$$
What is the percentage of candidates qualified from State N for all the years together, over the candidates appeared from State N during all the years together?
  • $$12.36$$%
  • $$12.16$$%
  • $$11.47$$%
  • $$11.15$$%
The correlation between supply and price is
  • perfect positive
  • perfect negative
  • imperfect positive
  • imperfect negative
The corelation between radius and circumference of circle is
  • perfect positive
  • perfectnegative
  • imperfect positive
  • imperfect negative
It is perfect correlaion if
  • $$0.7\lt r\lt 0.99$$
  • $$-0.7\gt r\gt -0.99$$
  • $$r=1$$
  • $$0.5\lt r \lt0.699$$
The correlation between standard of living and income is
  • perfect positive
  • perfect negative
  • imperfect positive
  • imperfect negative
The correlation between marks of history and maths has
  • positive relation
  • negative
  • imperfect
  • no relation
If increase in value of one variable is not accompnied by the proportional increase in second variable, then corrrelation between two variables is
  • perfect positive
  • perfect negative
  • imperfect positive
  • imperfect negative
If decrease in value of one variable is accompanied by the proportional increase in second variable, then correlation between two variables is
  • perfect positive
  • perfect negative
  • imperfect positive
  • imperfect negative
When area of rectangle is constant the correlation between its length and breadth is
  • perfect positive
  • perfect negative
  • imperfect positive
  • imperfect negative
The formula for correlation coeficient $$r$$ of two variables $$x$$ and $$y$$ is 
  • $$u_i=\dfrac{x_i-a}{h}$$,
  • $$\dfrac{1}{n}\sum(x-\overline x)(y-\overline y)$$
  • $$\dfrac{d_xd_y}{\sqrt{{\sum d_x}^2.{\sum d_y}^2}}$$
  • $$\dfrac{\sum xy}{\sigma_x \sigma _y}$$
The slope of the regression line of $$Y$$ on $$X$$ is also called the: 
  • Correlation coefficient of X on Y
  • Correlation coefficient of Y on X
  • Regression coefficient of X on Y
  • Regression coefficient of Y on X
State the following statement is True or False
The value of correlation coefficient is always $$2$$.
  • True
  • False
Consider the following statements :
Two independent variables are always uncorrelated.
2. The coefficient of correlation between two variables X and Y is positive. When X decreases then Y decreases.
Which of the above statements is/are correct ?
  • 1 only
  • 2 only
  • Both 1 and 2
  • Neither 1 nor 2
Regression coefficient is independent of: 
  • Units of measurement
  • Scale and origin
  • Both are correct
  • None of them
The value of Spearman's rank coefficient lies between 
  • $$2$$ and $$3$$
  • $$1$$ and $$2$$
  • $$0$$ and $$1$$
  • $$-1$$ and $$1$$
It is possible that two regression coefficients have: 
  • Opposite signs
  • Same signs
  • No sign
  • Difficult to tell
State the following statement is true or false
The value of coefficient of correlation is greater than $$1$$.
  • True
  • False
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