A horse is tethered to a peg with a 28 metre long repeat the corner of a 45 metre long and 25 metre wide rectangular grassfield. What area of field does the horse graze?
As the horse is pegged at the corner of the rectangular field, it will graze the area of the field enclosed between the sides of the rectangle and the arc. Area of the field = `1/4` π r²= 1/4 × 22/7× 28 × 28 = 616 m²
For frequency distribution presentation , which option is wrong.
By the method of moving averages, the seasonal index for four quarters equals to:
Using the method of semi-averages, secular trend is measured when:
28 If r ₁₂ = +0.80, r13 = -0.40 and r23 = -0.56, then the square of multiple correlation coefficient (correct to four decimal places) R2...
Which of the following is the most relevant for deriving a point estimate?
If mean and mode of the distribution is 32 and 21, then the distribution:
If xi | fi , i = 1,2,...n is a frequency distribution with standard deviation 15 and mean 30, the coefficient of variation will be equal to:
If the multiple correlation coefficient of X1 on X2 and X3 is zero, then:
The mean deviation from an average A will be minimum, if A represents: