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Q. The regression coefficients re independent of change of origin but:

Q. The arithmetic mean of the marks obtained by 50 students was calculated as 44. It was later discovered that a score of 36 was misread as 56. Find the correct value of arithmetic mean of the marks obtained by the students.

Q. The sample mean is a

Q. In a bivariate sample, the sum of squares of differences between marks of observed values of two variables is 33 and the rank correlation between them is 0.8. Find the number of pairs of observations:

Q. A measure of is a single value that attempts to describe a set of data by identifying the central position within that set of

Q. For a symmetrical distribution:

Q. The trend line Y=a+bX obtained by the least Squares method is known as the line of

Q. The mean deviation is minimum when deviations are taken from:

Q. Since the mode is the most frequently occurring data value, it