Karl Pearson’s correlation coefficient is also called:
Product moment correlation coefficient
Karl Pearson's correlation coefficient is also called the product moment correlation coefficient, which measures the strength and direction of the linear relationship between two variables.
Similar Questions
If the angle between two lines of regression is 90°, then correlation coefficient is:
Scatter diagram for the following data shows __________.
X: 1 2 3 4 5
Y: 9 8 7 6 5
When two judges rank only two individuals, the value of Spearman’s rank correlation coefficient is:
For three random variables \(X_1, X_2\) and \(X_3\), correlation coefficients between pairs are \(r_{12} = \sin^2\theta\), \(r_{13} = \cos\theta\), and \(r_{23} = \sin\theta\). The partial correlation coefficient \(r_{12,3}\) is given by:
Data sets with high kurtosis:
For how many days were the number of road accident patients treated less than 4?
Number of Road Accident Patients Treated by a Hospital Emergency Ward
For 120 days, the number of road accident patients treated in the hospital's emergency ward is given below:
Number of patients / रोगियों की संख्या 0 1 2 3 4 5 6 7 Days / दिन 11 16 21 23 20 17 7 5 In a pie chart depicting total expenses of a company for the year 2016, raw material had a central angle of 45°. If total expenses were Rs 504 Lakhs, what were the company's expense on raw materials (in Rs lakhs)?
Find the mode from the following table.
Class and Frequency Table
The following data shows the class and frequency distribution:
Class / वर्ग 0-10 10-20 20-30 30-40 Frequency / आवृत्ति 15 25 30 20 Find P(A'/B'), given P(A) = 3/4, P(B) = 9/20 and P(A∩B) = 1/4?
10% of people in a village are afflicted with a viral disease. What size of sample should be taken to ensure that error of estimation of the proportion is not more than 5% with 95% confidence?
Important Questions from Correlation and regression of two variables
In the case of two variables. the estimated regression equation is ŷ = 60 + 5x. The total sum of squares is 15730 and the sum of squares due to error is 1530. The estimated regression line based on this information is a ______.
If the angle between two lines of regression is 90°, then correlation coefficient is:
Scatter diagram for the following data shows __________.
X: 1 2 3 4 5
Y: 9 8 7 6 5
When two judges rank only two individuals, the value of Spearman’s rank correlation coefficient is:
For three random variables \(X_1, X_2\) and \(X_3\), correlation coefficients between pairs are \(r_{12} = \sin^2\theta\), \(r_{13} = \cos\theta\), and \(r_{23} = \sin\theta\). The partial correlation coefficient \(r_{12,3}\) is given by:
