Since Blood Pressure of a person depends on age, we need consider
If for two variable x and y, the covariance, variance of x and variance of y are 40, 16 and 256 respectively, what is the value of the correlation coefficient?
The difference between the observed value and estimated value in regression analysis is known as
The method applied for deriving the regression equations is known as
The errors in case of regression equation are
If the relationship between two variables x and y in given by 2x+3y+4=0, then the value of the correlation coefficient between x and y is
Product moment correlation coefficient may be defined as the ratio of
When r = 1, all the points in a scatter diagram would lie
What is the quickest method to find correlation between two variables?
If the value of correlation coefficient is positive, then the points in a scatter diagram tend to cluster
If there is a perfect disagreement between the marks in Geography and Statistic, then what would be the value of rank correlation coefficient?
The coefficient of correlation between two variables
For finding correlation between two attributes, we consider
In case the correlation coefficient between two variables is 1, the relationship between the two variables would be
For finding the degree of agreement about beauty between two judges in a Beauty Contest, we use
When we are not concerned with the magnitude of the two variables under discussion, we consider
The covariance between two variables is
What are the limits of the correlation coefficient?
Limit: Coefficient values can range from +1 to 1, where +1 indicates a perfect positive relationship, 1 indicates a perfect negative relationship, and a 0 indicates no relationship exists.. Pure number: It is independent of the unit of measurement.
What are the limits of the coefficient of concurrent deviation?
Product moment correlation coefficient is considered for
What is spurious correlation?
Scatter diagram is considered for measuring
The correlation between the speed of an automobile and the distance travelled by it after applying the brakes is
ANSWER : a
Solution : Initially the acceleration will be negative then finally the speed and distance will become 0.
Regression analysis is concerned with
Correlation analysis aims at
For a bivariate frequency table having (p+q) classification the total number of cells is
If the plotted points in a scatter diagram lie from upper left to lower right, then the correlation is
The correlation between shoesize and intelligence is
Some of the cell frequencies in a bivariate frequency table may be
For a p x q bivariate frequency table, the maximum number of marginal distributions is
Bivariate Data are the data collected for
Scatter diagram helps us to
If all the plotted points in a scatter diagram lie on a single line, then the correlation is
For a p x q classification of bivariate data, the maximum number of conditional distributions is
If the plotted points in a scatter diagram are evenly distributed, then the correlation is
If the lines of regression in a bivariate distribution are given by x+2y=5 and 2x+3y=8, then the coefficient of correlation is:
If the correlation coefficient between two variables is 1, then the two lines of regressions are:
If the covariance between two variables is 20 and the variance of one of the variables is 16, what would be the variance of the variables is 16, what would be the variance of the other variable?
The coefficient of correlation is significant if:
If the sum of square of differences of rank is 50 and number of items is 8 then what is the value of rank correlation coefficient.
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