Math Chapter Wise question with answer

Q01 If 'r' represents coefficient of correlation and bxy, byx represent coefficients of regression, then which of the f... English · UPPSC Polytechnic Lecturer 2021 (I) Q02 If the slope of the regression line is calculated to be 2.5 and the intercept 16 then the value of Y when X is 4 is... English · OAVS TGT 2019 Q03 If the regression line of 'y' on 'x' is ax+by+k=0 and the regression line of 'x' on 'y' is Ax+By+K=0, then- English · UPPSC Polytechnic Lecturer 2021 (I) Q04 If 4x – 5y + 33 = 0 and 20x – 9y = 107 are the two regression lines, then the correlation coefficient between x and... English · UK SSSC LT 2020 Q05 The mean and variance of 8 observations and 6 and 8 respectively. If some of these observations are 3, 5, 6, 8, 9,... English · OAVS TGT 2019 Q06 If the sum of the deviations of 50 observations from 30 is 50, then the mean of these observations is: English · EMRS PGT-2023