Question
If
Then
- r is positive
- r is negative
- None of these
The correct answer is: r is negative
Obviously, r is negative because as x increases, y decreases.
Related Questions to study
The coefficient of correlation for the following data will be
The coefficient of correlation for the following data will be
Two lines of regression are 3x+4y-7=0 and 4x+y-5=0 Then correlation coefficient between x and y is
Two lines of regression are 3x+4y-7=0 and 4x+y-5=0 Then correlation coefficient between x and y is
If the variance of x=9 and regression equations are 4x-5y+33=0 and 20x-9y-10=0, then the coefficient of correlation between x and y and the variance of y respectively are
If the variance of x=9 and regression equations are 4x-5y+33=0 and 20x-9y-10=0, then the coefficient of correlation between x and y and the variance of y respectively are
From a random sample space, 5 students has been selected. Their marks in Maths and Statistics as given below
The rank correlation coefficient is
From a random sample space, 5 students has been selected. Their marks in Maths and Statistics as given below
The rank correlation coefficient is
Two balloons A and B are taken at 300 K, maximum capacity of balloon A and balloon B are 800 ml and 1800 ml respectively. When the balloon system is heated, which one will burst first ? A B 1600 ML 700ML
Two balloons A and B are taken at 300 K, maximum capacity of balloon A and balloon B are 800 ml and 1800 ml respectively. When the balloon system is heated, which one will burst first ? A B 1600 ML 700ML
terms of H.P. for k N 
,then
terms of H.P. for k N ,then
A particular emission line, detected in the light from a galaxy, has a wavelength 
, where 
is the proper wavelength of the line. The galaxy distance from us
A particular emission line, detected in the light from a galaxy, has a wavelength , where is the proper wavelength of the line. The galaxy distance from us
Each side of triangle ABC is divided into three equal parts as shown in the figure ratio of area of hexagon PQRSTU to area of triangle ABC is
Each side of triangle ABC is divided into three equal parts as shown in the figure ratio of area of hexagon PQRSTU to area of triangle ABC is
Given the family of lines, 
Among the lines of the family, the number of lines situated at a distance of 
from the point M 
is
Given the family of lines, Among the lines of the family, the number of lines situated at a distance of from the point M is
If x1 and x2 are the solution of the equation 
-
If x1 and x2 are the solution of the equation -
The solution set of the system of equations,
is
In this question, we use logarithmic property to solve the equation. Remember. Here solve both equation and find the relation between x and y and then put any variable value in one relation and find one variable.
The solution set of the system of equations, is
In this question, we use logarithmic property to solve the equation. Remember. Here solve both equation and find the relation between x and y and then put any variable value in one relation and find one variable.
If x & y are real numbers and 
then ' y ' cannot take the value(s) :
In this question, we have to which value y cannot give. Here ‘y’ is always non-negative, so it never given the negative value.
If x & y are real numbers and then ' y ' cannot take the value(s) :
In this question, we have to which value y cannot give. Here ‘y’ is always non-negative, so it never given the negative value.
Statement 1:In the process of drying dishes with a towel, the wetting agent is the dish and the drying agent is the towel
Statement 2:The wetting agent gets wet during the process
Statement 1:In the process of drying dishes with a towel, the wetting agent is the dish and the drying agent is the towel
Statement 2:The wetting agent gets wet during the process
Which of the following are correct ?
In this question, we have to find which option is correct. Check every option which one is satisfy. Use the properties of the logarithmic which going to help to get the answer.
Which of the following are correct ?
In this question, we have to find which option is correct. Check every option which one is satisfy. Use the properties of the logarithmic which going to help to get the answer.
and 
occurs in an acidic medium 
in acidic medium
