Question
The distance between the centres of two circles having
radii 22 cm and 18 cm, is 32 cm. The length (in cm) of the direct common tangent of the two circles is :Solution
The correct answer is A
Two random variables x and y have the following regression equations -
3x + 2y β 26 = 0
6x + y β 31 = 0
then, the mean values o...
The variance of first n natural numbers is -
A statistician collects data on production of rice from 1990 to 20 2 0 and classifies it year wise. Which of the following type of classification of da...
A systematic sample does not yield good result, if -
The main aim of agricultural census is -
Which of the following is a second-order condition of short-run equilibrium of firm under perfect competition?
Suppose for estimating y, the equation YΜ= 5 β 2x calculations are made on a given set of data, which of the following is true for this situation?
Laspeyre's formula has ___________ bias and Paasche's formula has _________ bias.
Which of the following statement is not true?
byx and bxy are two regression coefficients. If byx > 0, then bxy will be -
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